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Hello FRG-7 friends

I have purchased a relatively well preserved FRG-7 from a friend. I owned one as a young SWL and used it to learn CW by copying maritime CW broadcasts on HF.

I wonder if there are recommendations for a general restoration strategy. My FRG-7 is working quite well. I note the locking is perhaps a bit difficult to adjust in certain ranges.

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I am aware of the need to check/replace electrolytic capacitors and I have also seen resistors losing their nominal resistance due to ageing effects.?

So, I am keen on any "must-do" restoration actions and also "don't do" ones. I can imagine that some fine-tuning may perhaps be necessary. Perhaps there are also some often encountered faults in these old receivers.

I bought my unit in 1977 if my memory is correct.?

I understand there is perhaps no separate service manual for the FRG-7. I recall seeing a "voltage chart" which may be the first thing to check.

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Thanks in advance for any comments, advice and information.

73

Dieter

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Hi Dieter.

take a look in the files section, you will find the manual, it’s a little challenging to follow without a scope in that range?

I measured my voltages the other week as I’m chasing issues around a heavily modified unit

i don’t have records with me but there is a pdf that gives a realistic table, it has Fluke in the title

br john

Hi Dieter

Also in the files section "4 - FRG-7 Service Notes" there is a lot of useful info. The two magazine articles by Lindsay Hood are highly recommended reading re theory of operation and alignment.

Regards

Steve

Excellent. thanks Steve.

Hello John,

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Much appreciated. I have good measurement gear in my shack, including a boat-anchor Agilent 8753 network analyser :)

73

Dieter