FRG-7000 Gilfer Mods

These modifications were developed for the FRG-7.

The circuitry of the the FRG-7 and the FRG 7000 as far as operation of the AGC goes, is pretty much identical and so the AGC modification can also be applied to the FRG-7000.

The FRG-7 and the FRG-7000 vary in the filter circuitry in the IF stage, the FRG-7 having only one filter and the FRG-7000 having two filters - one for AM and one for SSB. The filter modification is therefore not so relevant to the FRG-7000 unless you still desire to reduce the filter bandwith - perhaps on AM - to less than the factory fitted one.

These are two modifications, one dealing with the operation of the AGC, that gives a faster AGC operation so that the meter responds quicker to varying signal strengths and also causing the receiver to operate better with a rapidly varying signal.

The second modification is intended to reduce unwanted noise received with the signal when receiving SSB and CW and applys more to the FRG-7 than the FRG-7000 as the FRG-7000 switches to a factory fitted narrow filter when receiving SSB and CW.