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FREE TECH LIBRARY
Below, in alphabetical order, are the titles of articles published in the journal. HF and VHF from 2000 to 2013. To find out which issue of the magazine HF and VHF published this or that article, use article archive search. 100 years of the Russian submarine fleet 11-element wave channel at 144 MHz 15 V / 40 A - cheap and cheerful 160 meter shorty April 18, 2000 - 75 years of IARU 1971 - 2011: 40th anniversary of the Kolos radio club named after the Hero of the Soviet Union Y.F. Pavlov 1-element square 2010 by radio communication on KB telephone 2010 by radio on KB telegraph 25th regional championship in sports radio direction finding for the Cup of Valery Kostyaev 2-element 15m or 20m loop antenna 300 years of the Marine Corps 3-band VHF transceiver 3-element collinear VHF antenna 3-element wave channel with all active elements 4-band HF antenna 4-band direct conversion receiver 4-band bass equalizer 50th anniversary of the first manned flight into space 50 ohm feeder for W8JK directional antenna 7th International High Speed Radiotelegraphy Tournament Cup of Nations ARU - 85 years! B4 - 4-band direct conversion CW transceiver Black Sea Cup International Bucuresti Contest CFA antenna - return after 100 years COM ports. Basic information about COM ports used in computers CQ de AP1RIL CQ WW 160m DX Contest Croatian CW Contest CW transceiver on 80m DARC FAX-Contest DARC XMAS Contest DDS: Not all that glitters is gold DSB Direct Conversion Mini Transceiver EH antenna for 20m band ES Open HF championship EU PSK DX Contest EV1DP/p from the banks of the Rudnya reservoir F-22RW - 2m Whip Antenna Flex-1500: design and circuitry FLEX-3000 FLEX-5000A GP Beam Controlled Ground Plane, combined with a television antenna IARU HF World Championship IARU Region 1 HF Field Day In Air from Air (impressions of the EMOBSCC/AM operator).. IOTA Contest IRC: history and circuit JASTA SSTV Activity Contest J antenna for 70cm KB SDR Transceiver HMP-090 (Model 2010) KB transceiver FTDX5000D KB triplexer KB power amplifier based on ceramic-metal triode GI-7B LC oscillators LC oscillators. Principles of operation and main parameters of LC-oscillators based on bipolar transistors LF in the Katran radio microSDR: panoramic set-top box - all-wavelength SDR receiver Midwinter QSO Party MiniYES - single-board transceiver path MKARS80 - 80m QRP transceiver Mongolian RTTY DX Contest Mongolian RTTY DX Contest 2010 Notch filter Notch filter. Scheme and description of universal notch filters that can be applied in the low-frequency path Original QRP Contest P143 Variable Frequency P-399A - HF transmitter exciter QRP BPSK 80m band transceiver QRP CW mini transceiver QRP CW transceiver Aquarius QRP almost without antenna QRP transceiver on 40m band 80m QRP transceiver QRP transceivers QSL for sale RA-03 - active collective of the 20s of the XX century RDA Contest 2009 145 MHz RFD Antenna RK9FBU/p/qrp in unknown competitions Roofing filter in a modern transceiver RTTY and MMTTY V1.61E RTTY from WF1B - version 5 RTTY interface RZ6LWA at Radio Travel Club Activity Day (May 7, 2010) S04R - radio expedition to Western Sahara SA612 in the transceiver paths of amateur equipment FLEX-1500 SDR QRP Transceiver DIY SDR transceiver: frequency synthesizer Flex-1500 SDR transceiver FLEX-3000 and FLEX-5000 SDR Transceivers SP-QRP International Contest SSB mini transceiver Swiss HTC-QRP-Sprint S-meter in an amateur receiver T2FD: matched loop dipole antenna Taurus: QRP SSB transceiver The 2002 Oceania DX Contest TL antenna Ukrainian DX DIGI Contest UN DX Contest WRTC - Radiosports World Team Championship (short chronology) WRTC 2010: hot harvest in the fields of the Moscow region WRTC-2010: Impressions of an American Volunteer WSJT, or working through meteors Yaesu FT-897 - all-mode transceiver for operation in the ranges from 160 m to 70 cm Do you use hardware magazine for PC? Do you spell Moscow? (Do you spell Moscow?) And if you think about it ... Quantity or quality? Smooth range oscillators Automatic P-loop tuning Automatic telegraph key: from relays to microcircuits Automatic telegraph key: from relays to microcircuits Auto Bias in Power Amplifier Automatic Antenna Rotation Control HF car antenna by DL1FDN CIA agents Active receiving loop antenna Active reflector power supply Åland bicycle and radio experiments SWR Analyzer SWR Analyzer Anode power supply for a tube power amplifier Anode choke - pros and cons Anode choke with nichrome Anode power supply Antenna 144...146 MHz Antenna DX 2000 Fuchs Antenna - Familiar Stranger Sloper antenna on low bands Antenna UA6AGW Antenna W3DZZ: manufacturing experience Windom antenna for 160 m band Antenna poor dvoechnik Antenna Gamma Antenna range 80 m Antenna for 160 m band Antenna quadlong Antenna compact pyramid 144 MHz Antenna Antenna with controllable radiation pattern in the vertical plane 7 MHz rod antenna 7 MHz rod antenna (version 2.0) Bobtail Curtain Antenna System Antenna rotator 160m Antennas Antennas UA6AGW Windom and OCF Antennas Antennas of a poor radio amateur Antennas of vertical polarization EW8AU Double longitudinal reflection antennas Antennas for long-distance radio communications Antennas for low frequency bands Low frequency antennas Antennas with active power supply of vibrators Antennas with switchable radiation pattern Antenna tuners from LDG Electronics Antenna analyzer SARK-110 Antenna GIR Antenna preamplifier at 430 MHz Antenna tuner Antenna tuner for all HF bands 2200 m range equipment AGC for UA1FA transceiver on 160 m Asymmetric GP Astana-radio-2007: transceiver for 3,5 and 14 MHz bands ATCC Open Contest PC Audio Interface - TRX Balance detector YES - 2002 balance mixer Battery cassette No ringing Bekas-M Take care of your ears. Ham Radio Hearing Transformerless tube power amplifier Transformerless VHF amplifier at 144 MHz Transformerless Power Amplifier Transformerless Power Amplifier for QRP Transceiver Block of input circuits of the power amplifier on GU-50 lamps Forced Cooled Lamp Block for Power Amplifier R-143 radio station power supply Transceiver power supply for TCA-270-1 transformer Power amplifier power supply. Simple protection of high-voltage DC voltage sources Power supply, telegraph formation path Band pass filter block for transceiver main board Transceiver mixer block Control unit for radio station Angara Control unit and contactless band switch of the transceiver Radio control unit R-143 Forming unit to the panoramic indicator of frequency marks We fight interference. Methods for suppressing interference by the phase method Bravo Radio! (Memories and reflections) Buguruslan oil is the weapon of Victory in amateur radio On air - fortresses of the Belgorod region On the air - from a submarine Bilmak mound on air Boulder: a device for matching and balancing Antenna matching device option Option to enable the K174UN14 chip Resistance variometer Your R-130 Vertical without radials Fishing rod vertical and compact Z-match antenna tuner Vertical antenna F6GOG Vertical antenna for 10 and 15 m bands Vertical antenna for 6 and 10 m bands Vertical antenna for low bands and more Vertical VHF antennas: myths and reality Spring polar sprint (Arktika-Spring) Veterans of the Lipetsk amateur broadcast Visual indicator of telegraph tuning External efficient band pass filters Again about ICOM IC-7800, or a review sample for dummies More about electronic QSL cards Volgograd region 2009 Wave channels 2-87, 3-62 and 4-12 as a symbol of the national idea of Russian amateur radio Here is the radio Bad advice for a beginner shortwaver Everything (or almost everything) about Windom All-wave HF antenna of a poor radio amateur All Band Antenna Transformed Pyramid All-band HF antenna VMA-10 NP World Amateur Radio Network All mode detector RF milliwattmeter RF power in various radiation modes RF limiter RF Power Amplifiers with Low Intermodulation Distortion VHF HF bridge You can accept 150 characters per minute! Selecting the wire diameter of the P-circuit of the HF transmitter Selection and calculation of the design of the anode choke High voltage power supply Highly dynamic transceiver IF/AF modem with crystal filter Highly dynamic first H-type mixer for RA3AO High Efficiency Hybrid Mixer High performance passive-active preselector RPU High performance low pass filter for 1,8...54 MHz High altitude invisible antennas Output oscillatory system of tube power amplifiers Output stage on lamps 6P36S Output beam tetrode 6P45S Above - only fraction SS Hawaiian stories Headset from a GSM phone in the service of a radio amateur Harold Wheeler. shortwave inventor Generator triodes GI-7B (GI-7BT, GI-70B, GI-70BT), GS-35A (GS-35B) Generator tetrode GU-43A (GU-43B) Generator tetrode GU-73B (GU-73P) Generator tetrode GU-74B Generator tetrode GU-77B Generator tetrode GU-78B Generator tetrode GU-84B Frequency generators and multipliers for VHF equipment Geographical center: is it necessary? High quality 2 m transverter LO Hybrid power amplifier output stage Hybrid output stage. Transformerless hybrid power amplifier HF transceiver New Type Hybrid HF Power Amplifier hybrid mixer The toggle switch clicks softly VPA for RA3AO transceiver VFO for 8,865 MHz IF transceiver GPA HF transceiver GPA based on a tunable quartz oscillator GPA with a non-binary frequency divider GPA mixing type S-meter graduation Graphical calculation of the limiting parameters of RF power amplifiers GUN - GPD LO Synthesizer VCO Double balanced mixer on a chip type K (P) 590KN8 Double square switchable pattern Bidirectional Beverage Antenna Bidirectional Antennas Bidirectional amplifiers bidirectional amplifiers. Schemes of original reversing amplifiers Dual-band J-antenna for high-frequency HF bands Dual band antenna UA6AGW v.30/20.00 Dual-band antenna for low-frequency bands Dual Band Antenna Sloper Dual Band Semiconductor Tube Transceiver Dual Band Direct Conversion Receiver Dual Band Direct Conversion Transceiver Push-Pull Tube KB Power Amplifier Push-Pull Power Amplifier Divider for encoder AGC detector. Analysis of the operation of common AGC detector circuits based on amplitude or peak rectifiers Detector technique: a new look at the old Detector…transmitter Decibels - it's very simple! Jin: Transformerless Powered Transistor Power Amplifier 1296 MHz band in H-220 transceiver Range 160 m in transceiver Kenwood TS-520 Band pass filters EC Band Pass Filters The 38…40 MHz range is 50 years old! Dinatron effect in a tetrode Diplexer Diplexers: requirements and ways to improve Dipole: old and forever young P-loop remote control Remote Antenna Switch Long-wave converter for KATRAN receiver for personal computer to radio station For those who repeat the HT981M transceiver Pre-war shortwaves of Belarus Pre-war shortwaves of Kazakhstan and the Central Asian republics of the USSR Lithuanian pre-war shortwaves House on the branches Addition to the program Morse Trainer Refinement of the variometer Refinement of R-311 Refinement of the R-326M radio receiver Refinement of the R-130M radio station Finalization of the electronic telegraph key Achievements of radio amateurs of Ukraine Driver and power amplifier for HDK-97 Capacitances, inductances and mutual inductances of connecting wires EH antenna for 40 m band EPC PSK63 QSO Party EPC Russia DX Contest EPC WW DX Contest Something More About Morse Code and the Lessons of American Perestroika Another reason for TVI and BCI Once again about CW defects Once again about some problems of amateur radio Antenna grounding Replacement of transmission line segments with equivalent quadripoles Notes on the exhibition in Friedrichshafen Notes on SWR Relay Notes Notes of an old radio operator Output transistor protection Protection of powerful generator lamps Overvoltage protection in the power supply Sound cards for SDR snake on a wire And two, and three. Universal voltage doubler/tripler circuit And again about the multi-range delta And the Morse code sings a song to me! Ideal Mixer for Direct Conversion Receiver From the history of mobile radio From the history of the formation of domestic military radio communications SWR measurement Power amplifier linearity measurement Measurements in the manufacture of a ladder quartz filter Frequency response meter - attachment to the oscilloscope KBV meter RF current meter Curved vertical for 40 meters Switching power supplies for the transceiver VHF transverter output power indicator Interface for PSK-31 operation AES and radio amateurs artificial earth The art of being a radio observer Study of the IMD parameters of switching diodes and varicaps Origins of the telegraph History in names History of amateur radio movement and radiosport in Crimea Results of the DX marathon Results of the XIII championship of the Republic of Belarus on radio communications at KB Results of the WW UT CONTEST-2000 competition Looking for a quartz resonator To the 25th anniversary of the Chernobyl disaster How to choose a teletype program How the shortwave movement began in Mongolia How a transceiver became a transceiver What radials are required for GP What should be the power amplifier of an amateur HF radio station What power should Contest-qrp count? Calibration of measuring instruments Karaoke in BASIC Katran - VHF device Inductors on toroidal cores HF SDR transceiver HMP-090 (2010 model) HF antenna DL2JTE & HA7HN HF Antenna Delta HF antennas for high-altitude expeditions (and not only) HF transceiver ICOM IC-7200 HF transceiver T03DSP HF transceiver Ten-Tec Orion II, model 566 HF power amplifier HF Power Amplifier Teltow 500 HF power amplifier on GK71 lamps HF power amplifier on a GK71 lamp HF power amplifier based on ceramic-metal triode GI-7B HF low-pass filters on standard capacitors Quadrature demodulator on a TDA8040T chip Quasi-touch switch Are quartz filters on modern resonators simple? 501 kHz CW crystal oscillator Quartz local oscillator Quartz overtone loopless oscillator HF synthesizer HF transceiver ICOM IC-703 HF transceiver ICOM IC-718 HF transceiver Mark-V FT-1000MP HF transceiver Yaesu FT-1000MP MARK-V Field: numbers only HF transceiver Druzhba-M HF power amplifiers on the GU-43B lamp HF power amplifier from CB-747 HF power amplifier on G-811 lamps HF Amplifier Retro Ceramic high-voltage non-insulated capacitors K15U-2 Classic Beverage Antenna Radio emission classes Club of Radio Travelers (KRP) Key transistor power amplifier 160 m range Coaxial vertical antenna for 160 and 80 m bands coaxial relay Bieffe coaxial microwave cables Collection of Ham Radio Soundblaster Software Ring cores Micrometals, Inc. Power Amplifier Band Switcher Compact Yagi range 2 m Compact multi-band HF antenna Compact directional antenna Computer on a modern radio station Computer simulation of Yagi antennas Converter 144/14 MHz Band converter 144...146 MHz 50 MHz Band Converter Code converter for DDS local oscillator of SDR transceiver Design of microwave devices on microstrip lines Structural reasons for increasing the level of noise, fluctuations and instability of electronic equipment Weekend designs: HF loop antenna and absorbing SWR indicator HF/VHF Beacon Controller Control controller for Len-160 Echo repeater and digital recorder controller The contour of the radio station Kama-S Short vertical at 80 m The shortwave movement in the USSR is 80 years old! Corrector for the digital scale of the Volna-M transceiver Brief and 10) and the championship of Russia in radio communication on short waves by telephone (among youth) 2009 Summary of 2009 ARRL International DX Contest Phone Summary of 2009 CQ-M International DX Contest Brief summary of 2009 European HF Championship Summary of 2009 Russian WW PSK Contest Brief summary of 2009 Ukrainian DX Contest Summary of 2009 UN DX CONTEST 2009 Summary of 2009 Worked All Europe DX Contest (WAEDC) Summary of 2009 Worked All Germany Contest (WAG) Summary of 2009 ATCC Open Contest Summary of 2009 EPC WW DX Contest Summary of 2010 REF Contest CW Brief results of the XI Championship of the Russian Federation (Asian part) Brief results of the XV Championship of the Russian Federation (Asian part) Brief results of the G.A. Rumyantsev Memorial Cup, UA1DZ, 2009 Brief results of the Azov Cup 2009 Brief results of the open cup of the Republic of Bashkortostan Yury Viktorovich Fogel Memorial, UW9WK 2009 Brief results of the open championship Brief results of the championship for the cup Kazachok Y009 Brief results of the competition 2009 IARU Region 1 HF Field Day CW Brief results of the competition 2009 IARU Region 1 HF Field Day SSB Brief results of the competition Spring Polar Sprint 2009 Brief results of the competition Arctic Cup 2009 Brief results of the competition for the Yu.A. Gagarin Cup 2009 Brief results of the competition Autumn Sprint 2009 Brief results of the competition Field day Brief results of the competition Polar radio operator 2009 Brief itos 2009 ARRL International DX Contest CW SWR meter Who is who: Valery Tsygankov, RA3LE (ex UA3LBO) Who is who: Vasily Vasilyevich Gnezdilov, U2FA (ex UA2BI) Who discovered the special properties of short waves Who are Lopers? Arctic Cup Arctic Cup Digital (Arktika Cup Digital) Donbass Cup Kryvbas Cup G.A. Rumyantsev Memorial Cup, UA1DZ S.A. Yesenin Cup 144/14 MHz tube transceiver HF tube power amplifiers with OS Tube Power Amplifiers Lamp push-pull silo Tube HF Amplifier LF tube transmitter 2 m range tube power amplifier Dummy load The legendary expeditions of Thor Heyerdahl Len - at the 29th World Cup Ladder crystal filters in an amateur HF transceiver Linear HF amplifier ACOM 2000A Linear power amplifier on two GU-74B Linear power amplifier on GU-50 lamps Lunar effect at 80 m Lunokhod-G: 40 years of the Moon Amateur radio is fun! Wacky Antennas Magadan region: mountain peaks in MG-03 low altitude antenna Small size 80 m band antenna G7FEK Small Multiband Antenna Small-sized spiral ring VHF antenna Small-sized 80 m loop antennas Small VHF Antennas Small VHF receiver The Little-Known Moxon Rectangle SSB-CW transceiver small signal path Low noise GaAs transistors GD-4, GD-9, GD-16, GD-18, GD-22, GD-26 Manipulator for electronic telegraph key Manipulators (call sign sensors) for training foxes CE marking of amateur equipment International RRC Conference - 10 years International Q-code Lev Kryshin Memorial, UA0QO Antenna phasing method for 160, 80 and 40 m bands The method of restructuring the radio station R-105M Method for calculating the PA on a lamp with quadratic characteristics Mechanical fixation of radio equipment on horizontal surfaces Chip K174UN14 Microphone amplifier-limiter Microphones and headsets Miniature modulators and demodulators Minitransivet Zest Mini-expedition to the Kaibolovsky settlement (RC-134, RDALO-26) All-around radio operators: how it began Multi-band KB antenna Multi-band antenna G5RV Multiband Antenna Multi-band antenna Inverted L Multi-band antenna UT6LU Multi-band antenna W5DXP Multi-band antenna based on field-coupled emitters Multiband Antenna Propeller Multi-band antenna with CWL traps Multi-band antenna, or what the QSL card told about Multiband vertical antenna Multi-band vertical antenna with J-match Multi-range delta Multiband directional antenna Multi-band antennas EW8AU Multi-Range Frames Shortened by Capacitance Multiband VFO Multiband Mini-Test Receiver Multifunctional electronic key and transceiver electronic scale with sound and digital indication Multi-storey cascode linear power amplifier Mobile HF anti-aircraft antennas Modem for HF and VHF packet Modem for digital communications Modernization of the Volna-K receiver Modernization of the radio receiver Katran Modernization of the R-143 radio station Modernization of the frequency synthesizer of the Mayak radio station FT-840 Transceiver Upgrade UA1FA Transceiver Upgrade Modernization of KATRAN radio receiver units SB200 and FL2100B Power Amplifier Upgrades Modernization of the digital scale in the R-326M radio receiver Modernized amplifier UM-300-M1 Modification YAESU FT840 Maybe more! Youth Competition Spring - 2010 Youth competition Golden autumn Youth competitions in memory of Ufimtsev Monolithic high-frequency power amplifiers for RF and microwave ranges from Mitsubishi American Carrot, or 160m Cone-shaped Vertical Bridge measurement methods Powerful broadband GaAs FETs GF-7, GF-21, GF-50, GD-10 and GF-17 Powerful HF amplifier on ... television lamps Museum of radio and amateur radio them. THIS. Krenkel At no name altitude On the whole range of rustling, cod Reliability of generator lamps tilted dipole On-window VHF antenna Directional antenna UA6AGW v.7.00 Directional antenna UA6AGW v.7.01 Directional antenna of vertical polarization 14 MHz directional antenna Directional antenna for 40 m range Directional three-element HF antenna Directional Antennas 15 m directional antennas Directional antennas with wire vibrators Directional HF Antennas BMA5 and BMA6 Mentors should be remembered Adjusting the quartz filters Balancer setting Scientific and technical conference for radio amateurs Non DXpedition to Pakistan Inexpensive homemade transistor power amplifier 40-meter range Some Sideband Inversion Issues Some features of the operation of low-frequency diplexers Some problems of amateur radio A little about setting up the main boards of the UT2FW portable transceiver Unusual propagation of radio waves Several episodes from the life of a shortwave reconnaissance radio operator Low pass NOTCH/CW filter Low Frequency Compressor Nikola Tesla (to the 150th anniversary of his birth) New DXCC Diplomas for the New Millennium New trends in the theory and practice of antennas New mixer at ShTL New element? Portable VHF radios retro nostalgia Low pass filter for CW reception LF compressor LF limiter About ham-shorting On the excitation of linear tube power amplifiers in a grounded grid circuit About setting up a triangle and ... growing tomatoes in the country About increasing the dynamic range of direct conversion receivers About the benefits of a radio amateur hobby, or WRTC through the eyes of a radio amateur's wife About the cold tuning of the PL-loop About the fishing rod antenna and ... around it About using macros in WF1B One dipole - two bands One of the first shortwaves of Uzbekistan One-button switch for receiver attenuators Single Board Universal Path Single Band SSB Receiver Single transistor telegraph transceiver Determination of the equivalent parameters of a quartz resonator Rangefinder for DX4WIN Optimal counterweight system for vertical antennas Operating experience of UW4HW type antennas HF transceiver main board The main board of the Sloboda-M HF transceiver Cricket receiver main board Transceiver main board The main path and power amplifier of the Klopik K2 transceiver Main path of Pilgrim direct conversion transceiver The main parameters of the receivers of branded HF transceivers Screen Grid Grounding Features Features of the design of mixers on the chip K (P) 590KH8 From scheme to design, or taming a simple receiver on a range of 2 m Open championship of the Volgograd region Evaluate the results (A look through the years) Very thick antennas Memory UA4PW Memory knows no oblivion! Panoramic attachment based on YU1LM receiver panoramic indicator Parallel switching of lamps Parameters of passive frequency converters Parameters of the GU-50 electron tube in triode connection with combined grids Passive or active? First radio contact The first Bulgarian shortwaves The first shortwaves of Georgia and Armenia The first shortwaves: 20s - 30s. Unknown amateur radio fates The first amateur AM radio enthusiasts The first local oscillator of an amateur KB transceiver Fox hunting transmitter... and more Sports DF transmitter Transmitting short loop antennas Transmission path of a half-duplex transceiver The transmission path of the transceiver Alteration of a computer power supply Alteration of the power amplifier from parallel anode power to serial Switchable Antenna Box at 80m Power Amplifier Range Switch Antenna switching via cable Portable 430 MHz directional antenna Reprogrammable frequency synthesizer based on AK9601 chip Tunable crystal oscillator Restructuring radio stations Len-160 for operation in the range of 144 ... 146 MHz Loop vibrator… in the Inverted V antenna sad page of history Power supply of the wave emitter at maximum current Powering two antennas with one cable Power supply for symmetrical vibrators Tetrode power supply in a power amplifier Powering the transceiver from the computer unit PC - amateur radio spectrum analyzer P-loop P-loop P-loop in resistance matching mode P-loop in filtering mode P-contour: responses to comments. On the accuracy of the calculation of the P-contour using various methods Plane quasi-thick half-wave dipole Jeep tour itinerary U-shaped antenna elements of a new form and antennas from them Increasing the output power of the UM-200 amplifier on the 21 and 28 MHz bands Increasing the durability of generator lamps Increasing the selectivity of RPU on VHF Increasing the transmitter power of the PALMA radio station Improving the frequency stability of the crystal oscillator of the UW3DI-1 transceiver Increasing the electrical strength of the electrical gaps of generator lamps Suppression of extraneous acoustic noise Underwater 160m vertical antenna Adjusting the Capacitance of Ceramic Capacitors Moscow Region, WRTC-2010, July 8 - 12 Call Signs LI2B (from Thor Heyerdahl's Kon-Tiki Journey) Call signs of amateur radio stations of the Republic of Kazakhstan Call signs of amateur radio stations of the Russian Federation The flight of the airship Graf Zeppelin is 75 years old! Full size HF loop antennas Bandpass and LF diplexers Bandpass LNA at 144 MHz Band pass filter for 2 m band Radio frequency bands allocated in the Russian Federation for amateur radio communications Semi-delta Half wave resonator polar radio operator 28-RX/TX-m portable radio Portable HF Antennas Portable HF transceiver Extraneous acoustic noise and methods of its suppression Outdoor CW transceiver Travel transceiver Why HAMs Practical constructions of the direct conversion technique Power preamplifier for Radio-76 M2 transceiver Preset counters in digital scale Prefixes of amateur radio stations of the world (Prefix List) Reception interference suppression device Device for checking the sequence of operation of the relay A device for adjusting and studying the characteristics of the AGC system Engaging youth is a vital task! Receivers for DX operation Receiving magnetic loop antennas Transceiver The use of junk quartz to obtain a signal with a frequency of 100 kHz The use of a wave emitter on HF Application of computer programs of spectrum analyzers The use of MW antennas in the 28 MHz band Primorsky Territory, Snezhnaya (1682 m) Let's adapt the headset Coaxial Cable Length Tool Wire multiband antenna Wire quasi-thick pins with counterweights eQSO program - Internet connection of repeaters Industrial HF transceivers in 2001 Industrial low-pass filters for amateur transmitters A simple outdoor antenna. Full size vertical antenna, for operation on the amateur bands from 10 to 30 m Simple multi-band antenna Simple multi-band antenna with switchable radiation pattern Just about antennas Just about antennas, or measuring SWR A simple matching device for low-impedance antennas Simple QRP 3,5MHz SSB Transceiver Simple SDR transceiver Simple vertical transducer for 2 m and 70 cm bands A simple two-tone generator Simple HF dipole Simple quartz filter Simple load switch Simple mic equalizer Simple woofer A simple transmitter for hunting foxes in the range of 80 m Simple receiver for hunting foxes in the range of 80 m Simple Direct Conversion Receiver A simple radio path for a mini transceiver A simple VHF radio frequency synthesizer An easy way to measure output power Simple Direct Conversion QRP CW Transceiver A simple Q factor Simple electronic key Simple 160 m band antennas Simple High-Performance Devices for Software-defined Radio Simple HF Antennas Professor I.G. Freiman - the initiator of the amateur radio movement in Russia Passage on HF: radio communication lives not only by Wolf numbers Pseudo stereophonic reception Travels in the nightingale region The path through the centuries (stages of the formation of amateur radio) Five-range Vertical Open-Sleeve R-250M2 - loudspeaker output R-311 - increase in output power Work via satellites in Toronto We work with the world hardware magazine Radio amateurs and the first artificial satellite of the Earth (dedicated to the 50th anniversary of the launch of the first artificial satellite) Radio amateurs and the development of radio reception Radio amateurs: truth and fiction Ham Radio Designer - Terrorist Radio amateur emergency service of Crimea Amateur radio satellites Amateur radio satellites Amateur radio biathlon: history, present, future Radio beacons on HF Radionumismatics and bonistics Radio interference to stations in the amateur service Radio UN7BV-14-Rx Radio VEF-Amator VEF-AMATOR radio receiver Radio frequency cables RK, RKS, RKPG, RKMGE, RKPGV RF coaxial cables Radio expedition to places of military glory Development of amateur VHF radio communication in the Crimea Calculation of power supplies for tube power amplifiers Calculation and manufacture of quartz filters Calculation of the PL contour P-loop calculation Calculation of reactive power in the P-loop Calculation of the matching transformer of the output stage Expanding the capabilities of the frequency response meter NWT-7 RVP-95: small-sized radio station with CLC-modulation Reversible ultra-dynamic amplifier of the new generation Regenerative KB receiver Regenerative preselector Regulations of amateur and amateur satellite radio communication services of the Republic of Belarus Radio Regulations Output Power Adjustment RTTY mode in RA3AO transceiver Standby mode in the power amplifier The results of measuring the on and off times of some types of small-sized relays and vacuum circuit breakers Rating of Belarusian radio amateurs participating in radio communication competitions on KB Radio records Portable VHF radio antenna repair Repair of the IC-735 transceiver XNUMXm repeater Shortwave repression Repeater RR9LB Retro: amateur communication receiver SW-3 Slingshot for 2m band Russian VHF CW Marathon (Russian VHF CW Marathon) Russian matrix and Morse code images telegraph key knight Homemade antenna analyzer Antenna Direction LED Summary table of measurement results of parameters of amateur transceivers Seven-band directional KB antenna VMA-7 Certificate in LoTW and its copy AC power for R-311 Line noise filter Siberia by radio communication on VHF 2009 signal and electronic telegraph key Symmetrical half wave vibrator Synthesizer FM radio two-meter range LO Synthesizer Frequency synthesizer Frequency synthesizer for radio station Palma Frequency synthesizer for direct conversion technique Frequency synthesizer for upconverting transceiver Frequency synthesizer for VHF receiver or transceiver Frequency synthesizer and modern transceiver control module with conversion+A23865m up Frequency synthesizer and upconverting modern transceiver control module Amateur transceiver frequency synthesizer Smooth frequency synthesizer Frequency synthesizer of a modern amateur transceiver IFL-based frequency synthesizers High cut/low cut system Voice control system VOX voice control system Amateur radio earthing systems Cases at intramural-correspondence radio competitions on KB Mixers RA3AAE on back-to-back LEDs and vacuum diodes Mixers for RA3AO transceiver Mixer for 74NS4053 Mixer with extended dynamic range on the chip K174PS1 Current controlled mixer Transceiver Mixer YES-2002 Smolensk branch of MPEI is 40 years old Modern industrial KB transceivers: what are they? Antenna matching with a quarter-wave transformer Vertical antenna matching Matching the transceiver and power amplifier Matching the transceiver with a power amplifier HF matching transformers Solar wind and Earth's magnetosphere Pairing a transceiver with a clock, or how to organize an accurate time service Competitions in memory of Admiral Nevelskoy Spiral Antennas Method for rejecting bipolar transistors by noise qualities Sleep mode in the power amplifier Screen Grid Voltage Regulator Screen Grid Voltage Stabilizer Voltage stabilization on the shielding grid Screen voltage stabilization in power amplifiers Stabilize or not? LO Stability Stable smooth range generator Stable GPA Stalingrad is calling! Standard KPIs at high RF voltages Old theory in new antenna practice trends Fixed Antenna Magnetic Loop Fiberglass... YAGI! History page. Packet communication in the USSR Countries and territories on the DXCC list Crazy projects. Antenna designs that, at first glance, may seem fantastic Power Supply Control Circuit for QRP Transceiver The Mysterious W5GI Multiband Antenna So what should the SWR be? Dual use television antennas Telegraph QRP transceivers on logic chips Telegraph key on integrated timers Telegraph key with alternator Telegraph simulator for learning Morse code phone filter Silent Antenna Tuning T-shaped vertical transmitter for 40 and 80 m bands Tone call in VHF radios The celebration of the association of radio amateurs - guys of good will (Meeting of the IARU Executive Committee - Region 1) Accuracy of computer antenna calculations 144/28 MHz transverter with ADG774A key mixer Transceiver Contest-5,5 Transceiver Digi-80 Transceiver DS-2003 Elecraft K2 transceiver Elecraft K3 transceiver FTDX5000D transceiver: numbers only Transceiver IC-7000 Transceiver IC-756PRO Transceiver ICOM IC-746PRO Transceiver ICOM IC756PROIII Transceiver ICOM-7800 - more than just a transceiver Transceiver Ten-Tec 599AT Eagle Transceiver TS-2000 Transceiver TS-590S Transceiver UA4HRV Transceiver UN7BV-3,5-TRX Yaesu FT-2000 transceiver Yaesu FT-450 transceiver Yaesu FT-817 transceiver Yaesu FT-857 transceiver Transceiver Yaesu FTdx9000 Contest Yaesu FTDX9000D transceiver Transceiver for RLD EM-80 Transceiver RVP-2004 160 m transceiver Transceivers Kenwood TS-480SAT and TS-480HX Is a large dynamic range required for the receiver? Alarm telegraph key Tri-band vertical antenna without ladders Tri-band vertical dipole for 20, 17 and 10 m XNUMX-channel sequencer 2-element XNUMX m antenna Three-element vertically polarized directional antenna Three-element wave channel with all active elements TC-180 in the transceiver power supply Balanced line tuner Passion for life: an interview with Lev Trifonovich Stryapunin, RU0LS UHF and 144 MHz converter mixer UHF on AP602A Amazing designs by Jari Vainio, OH6DC 2m narrow band loop antenna Narrow-band filter and telegraph signal shaper Chamber of Commerce and Industry Pilgrim SDR transceiver nodes: small-signal reverse transceiver path R-326M radio receiver units Communication Receiver Nodes: Input Filters Communication receiver units: mixer, crystal filter, AGC system Communication receiver nodes: intermediate frequency amplifier, multimode detector, crystal oscillator RVP-2004 transceiver units: VHF antenna Long Yagi VHF antenna RA3LE VHF antennas with asymmetric vibrator VHF beacons with advanced features VHF repeaters VHF power amplifier UR5YCW on lamps GU-32 and GU-29 VHF power amplifier UR5YW on transistor KT931 VHF power amplifier based on ceramic-metal triode GI-7B VHF FM observer receiver VHF antennas at 145,5 MHz VHF power amplifier VHF power amplifier with overload protection 160 m short antenna Short vertical antenna for 40 m band Short helical antennas Shortened Dual Band Dipole Improving the frequency response of the Leningrad quartz filter Power Amplifier Linearity Improvement Improving the operation of the local oscillators of multi-band transceivers Improving the performance of power amplifiers with common grids Improving the temperature stability of the GPA UM-300-M1: light and powerful HF amplifier Versatile YAGI Directional Antenna Technology Universal reverse amplifiers Universal amateur modem ULF communication receiver Simplified Power Amplifier Load Resistance Calculation Receiver IF Dual purpose portable radio amplifiers RM amplifiers Amplifier RF communication HF receiver Amplifier Acom 1000 Power Amplifier Power Amplifier IC-PW1 Power amplifier RA1WT Power amplifier WaLet-2M Power amplifier in a universal case Power amplifier range 140...150 MHz 144 MHz Band Power Amplifier Power Amplifier for SDR-1000 Power amplifier for HF bands on a transistor assembly KT9105AC Power amplifier for Radio 76M2 transceiver 2m Power Amplifier Power amplifier for 6P45S Power amplifier for GU-43B with a driver for two 6E5P Power amplifier on two lamps 6P45S 2m power amplifier Power amplifier on lamps 6P36S Power amplifier on a GK-71 lamp with a transformerless circuit of an anode current source Power amplifier of radio station Kama-RM Power amplifier with dynamic grid control Splitter amplifier for transceiver path Improvement of the Angara-1 2P20 radio station Robust ultra-dynamic broadband RF amplifier Elimination of combination noise Remote control device Device for self-listening signal A device for reducing the no-load current of a transformer from a microwave oven Antenna rotator Phase SSB driver Phase suppressor Ferrite cores Filter between transceiver and power amplifier 144 MHz Even Harmonic Filter Switched Capacitor Filters Low Pass Filters for Harmonic Suppression Flags, pennants and other low-frequency ground-independent receiving antennas Phonetic alphabet SSB Signal Conditioners FOS and IF-3Ch path for RA3AO transceiver Good self-control in CW Bias Circuit for Power Amplifiers Digital Local Oscillator Frequency Lock Digital auto-tuning of the GPA frequency Digital signal processing Digital part of the frequency synthesizer The digital part of the frequency synthesizer of the transceiver Digital Scale Geranium Digital scale for HF bands Digital S-meter Digital S-meter Kvant Digital automatic SWR meter One-loop synthesizer digital block Digital voice recorder ECHO Digital voice recorder ECHO-M in FT-840 transceiver Digital single vibrator in digital scale digital receiver Digital modes of communication Digital modes of communication: the correct composition of macros and short texts Pinout of microphone connectors used in Kenwood amateur radio equipment Time zones of Russia Frequency meter on a single-chip microprocessor PIC16F84 Quartz frequencies from the RSIU radio station IF frequencies not affected by combination noise IF frequencies not affected by combination interference (range 144 - 146 MHz) Championship of the Asian part of the Russian Federation Championship of Eastern Siberia and the Far East HF Memory Radio Championship What is peak-to-peak, amplitude and RMS? Broadband 2m Antenna Broadband reversing amplifiers on field-effect transistors Broadband linear HF amplifier Broadband transformer in the practice of antenna matching Broadband power amplifier Broadband FET Power Amplifier Antenna equivalent and transmitter power determination from graphs Dummy load Equivalent load in oil Visual Dummy Load for QRPP Transmitter Shielding of units of transceiver radio equipment Expedition EM5WFF/P to the Skole Beskydy National Nature Park Expedition EN1 IFF to Meotida National Natural Park Expedition VP8ORK Expedition of the RZ6AZZ team to the islands of Lake Peipsi Experimental antenna at 432 MHz Experimental Approach to Grounding Systems for Vertical KB Antennas Experiments with LF Experiments with E/H Antenna Electrical/magnetic receiving antenna Electric tuning vernier Electric or magnetic. Cases of radio equipment made of aluminum and its alloys do not adequately shield radio equipment from magnetic fields Electronic switching in transceivers Electronic frequency switch Electronic telegraph key on the microprocessor This honorary title is Mentor Effective antenna for 160 (80) meters Effective vertical antenna length 5l/8 Efficient Grounding Systems for Vertical Antennas Efficient mixer on strictly matched broadband transformers Effective LPF for the transmitter echo repeater Anniversaries Anniversaries and round dates in the history of shortwave amateur radio - 2010 The young man became interested in radio engineering. What's next? I love RU-QRP! The language of radio amateurs: not just a set of characters Yakov Ottonovich Narkevich-Iodko - another name in the history of radio
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