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Old 11th Nov 2017, 1:07 am   #145
Radio1950
Hexode
 
Join Date: Apr 2017
Location: Buderim, Queensland, Australia.
Posts: 428
Default Re: Magnetic Loop Receiving Aerial (Gary Tempest)

Hi everyone,
with help from David G4EBT, I recently built a Manhattan style Gary Tempest design loop amp with Central 2N5109s from Mouser USA.
The antenna is a 1.0 metre circle of 12mm OD aluminium tube.
I had hoped to trial the setup for 7.0 and 14.0 Mhz to improve a noise situation.
I measured the amp gain (with a Marconi 2022 and Icom 7600) at about 28 db at 1Mhz, and trailing off above 10 Mhz.
Works OK, especially as designed for LW and MW, but overall is not as good as a dedicated dipole for HF.
Regards to all, mike
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