R&D Report 1988-08 : Array elements for a DBS flat-plate antenna. M.C.D. Maddocks The introduction of a direct broadcast by satellite (DBS) television service requires suitable receiving antennas to be available. An alternative to the parabolic dish antenna is a flat-plate antenna. The overall design of a circularly-polarised flat-plate antenna which can be mounted flat on the wall of a building has been considered in a companion Report. In this Report various types of elements are...
Topics: element, radiation, pattern, array, plane, broadside, elements, antenna, microstrip, triplate,...

R&D Report 1987-13 : Band II VHF antenna for home construction. S. Wakeling A wideband Band II Yagi antenna, suitable for home construction, has been designed using computer techniques. The antenna is intended for use as a domestic receiving antenna for VHF/FM sound broadcasting at frequencies in the range 88 to 108 MHz. Scale-model antennas were constructed and measured to verify the performance predicted by the computer. Finally, a full-scale Yagi antenna was constructed and its radiation...
Topics: antenna, yagi, dipole, vhf, antennas, ccir, design, impedance, element, folded, single dipole,...

73 Magazine December 1964 (#51) SSB Mobile Receiver - Lots of nice ideas in this one ...... W3ZFJ 6 Cheap Pair of Socks - Simple linear using inexpensive new tube ...... W6NKZ 10 28 Volt Supply - 10 amps at 28 volts for $10 ...... K6VNT 12 Weather Detector - Don't let a tornado suck you up ...... K5JKX 14 14 Elements on 432 - Simple yagi for 70 cm ...... K1CLL 16 Miniature Multiband Tuner - Very clever and useful ...... W6SFM 18 Bamboo Birdcage - Thanks to G4ZU and the boomless Quad ......W6WAW...
Topics: model, frequency, antenna, meter, tlie, power, voltage, receiver, circuit, crystal, power supply,...

73 Magazine May 1968 (#92) The UFO Network - Setting up to track the whetever they ares ...... W2NSD/1 2 Practical Miniature Antennas for 80-10 Meters - Only 80 inches for 80 meters! ...... W8VVT 6 The Diamond Array - One-element 40M quad which also works on 20 and 10 ...... W6LLN 10 Why Not? - Why not put a VHF yagi beam on your low-band beamm boom? ...... W6HGX 11 Do It With Wire - A wire antenna fed with twinlead that works all bands ...... K3QKO 14 Durable Gamma Match - Clever idea by one...
Topics: antenna, ssb, meter, gain, signal, frequency, amateur, quad, dipole, power, amateur radio, power...

73 Magazine June 1973 (#153) Simple Generator for 222 MHz - This three transistor oscillator and attenuator will enable you to tune up a 222 receiver or antenna and measure the sensitivity. There are still new worlds to explore -try 222 ...... K1CLL 23 Miniature 80 and 40 Meter Antenna - Brand new idea for the experimenter - don't, say there isn't anything new that amateurs are working on. Get cracking ...... W2EEV 29 UHF Output Meter - Accurately measuring rf power at 444 MHz is a problem...
Topics: antenna, amateur, repeater, meter, mhz, radio, frequency, watts, power, transmitter, amateur radio,...