Shortwave transmitting antennas. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / HF antennas
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dual band (7 and 14 MHz) antenna with 300 ohm feed. The communication coil L contains 3 turns of PEL-1,5 wire. frameless winding, winding diameter 50mm. Coil L is located next to the circuit coil.
All band antenna W3DZZ. L, 20 turns of PEL-1.5 wire, frame diameter 50 mm: C, 60 pf. LC circuits are shielded to prevent moisture from entering the circuit.
Quad Band antenna (28: 14; 7; 3,5 MHz), L and C data are selected upon adjustment. Indicative data: From 50-60 pf. L 5-7 turns of wire PEL-1.0 on a frame with a diameter of 50 mm.
All-band antenna type VS1AA connected to the transmitter circuit through the P-circuit. The antenna is made of copper wire with a diameter of 2-2,5 mm. feeder - from a copper wire with a diameter of 1 mm (all antennas and their feeders considered on this page - except for those where a cable is used - are also made from the same wires).
Antenna type "V-star". Operates on all amateur KB bands. The opening angle between the beams font face="Symbolа/font-72°. The length of each beam is 42,25 m. The approximate data of the LC filter are the same as for a four-band antenna. The antenna beams are switched depending on the direction to the correspondent.
All-band antenna with coaxial cable feeder with a wave impedance of 60-70 ohms. A 39.60 m long wire can be mounted on a horizontal rail attached to the mast. The remaining wires are connected to this wire through insulators.
Literature
- Radio No. 6 1961, tab
Publication: N. Bolshakov, rf.atnn.ru
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