Re: Purchasing an R1155 receiver
I've attached a report on a refurbishment of an R1155 that I completed a few years ago. I would say if you have no experience of restoring valve radios, this isn't a good choice to cut your teeth on. It took me a long time and a fair measure of cost and sweat. If you decide to go ahead regardless, then try to get one in the best possible working condition that you can find. Of course, you'll have to pay a premium for that. In the attached schematic for the power supply I would now make one change which would be to use 1N4007 or UF4007 silicon diodes for the HT rectifier bridge. They give a bit more voltage headroom than the 1N4006 that I used originally. Also it is probably a better idea to put the audio amplifier into a separate box from the power unit so as to reduce hum pickup. Best of luck. Jerry
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