Note
QST, Apr 1978, p. 88.
QST, Feb 1980, p. 131.
QST, Mar 1981, p. 178.
QST, Mar 1982, p. 175.
Loop amplifier: $67.50.
Loop antennas: $47.50.
Designed to improve reception on 160, 80, the broadcast band, and on VLF.
Loops pick up far less noise than most other antennas. And they can null out interference. Unlike ordinary direction-finder loops, the LA-1 tilts to match the incoming wave front. The result: Deep nulls up to 70 db.
Loop nulls are very sharp on local and ground wave signals but usually are broad or nonexistent on distant skywave signals. This allows local interference to be eliminated while DX stations can still be heard from all directions.
The loops are Litz-wire wound on RF ferrite rods. They plug into the Loop Amplifier which boosts the loop signal 20 db and isolates and preserves the high Q of the loop. The tuning control peaks the loop and gives extra preselection to your receiver.
The loop amplifier and plug-in loop antennas are sold separately.
10–40 KHz (Omega)
40–150 KHz (WWVB, Loran)
150–550 KHz (VLF)
540–1600 KHz (Broadcast)
1600–5000 KHz (160 & 80 meters)
5–15 MHz (HF-1)
