Re: RCA AR88D Comms Receiver.
Many thanks for all the tips guys.
My friend, a radio ham across the road lent me his 6J5 form his AR88, and a spare glass GT type, no change, still the same fault. TheGTt showed low emission on the MHSVT, but still worked in the set.
I hard wired the coil and tuning cap to the valve base missing out the switch, fault still there, switch OK. As the fault only occurs on the top 3 bands, the only common part left is the tuning cap. HF section.
I am now going to try replacing the tuning cap with a selection of fixed caps across the range, this should eliminate this part. I will also try a small var. cap, on order, when it arrives.
If I have missed anything, please keep shouting.
John.
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