UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - FRG-7. Very quiet

SiriusHardware · 2nd Sep 2020, 5:56 pm

I've just had a quick look at the circuit diagram,

http://www.monitor.co.uk/radio-mods/...it-diagram.pdf

I see that there is an awful lot of switchery in front of the receiver.

I am assuming that the DX/Off/Atten switch has been set to 'DX' throughout?

One thing you could try is to connect a long length of wire directly to C101, not the side which goes to Q101 G1, but the side which goes to the junction of VC1 / S2c common. Connecting an aerial here bypasses the input bandpass filters, but if the receiver livens up when you do that, that would suggest a fault between the aerial input and the beginning of the receiver proper.

2nd Sep 2020, 5:56 pm	#9
SiriusHardware Dekatron Join Date: Aug 2011 Location: Newcastle, Tyne and Wear, UK. Posts: 11,586	Re: FRG-7. Very quiet I've just had a quick look at the circuit diagram, http://www.monitor.co.uk/radio-mods/...it-diagram.pdf I see that there is an awful lot of switchery in front of the receiver. I am assuming that the DX/Off/Atten switch has been set to 'DX' throughout? One thing you could try is to connect a long length of wire directly to C101, not the side which goes to Q101 G1, but the side which goes to the junction of VC1 / S2c common. Connecting an aerial here bypasses the input bandpass filters, but if the receiver livens up when you do that, that would suggest a fault between the aerial input and the beginning of the receiver proper.