UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

Heatercathodeshort · 17th Oct 2006, 8:01 pm

Hello Mike,
Your little battery set should be quite lively and give enough sound.
You may find that you have some leaky wax caps, usually around four in that set up. The slightest leak even a couple of meg ohms will bias off these very sensive but totally amazing valves. I suggest you replace any you find usually .1uf and maybe .01uf. Even the non wax type are suspect.
As Paul says the H.T. is a little low at 60 volts but it should still give a good account of itself. The low H.T. will effect power [?] output more than station getting ability. Background noise is very low and at first it seems that the set is not going to work but tuning in should result in a good performance. Another thing to check is the aerial leads that connect to the frame aerial usually in the 'lid'. You may have a ferrite rod in yours and this is much less likely to suffer the connecting wires problem. Hope you liven it up a bit! Regards John.

17th Oct 2006, 8:01 pm	#4
Heatercathodeshort Dekatron Join Date: Jun 2005 Location: Warnham, West Sussex. 10 miles south of DORKING. Posts: 9,147	Re: Battery Valve portable Hello Mike, Your little battery set should be quite lively and give enough sound. You may find that you have some leaky wax caps, usually around four in that set up. The slightest leak even a couple of meg ohms will bias off these very sensive but totally amazing valves. I suggest you replace any you find usually .1uf and maybe .01uf. Even the non wax type are suspect. As Paul says the H.T. is a little low at 60 volts but it should still give a good account of itself. The low H.T. will effect power [?] output more than station getting ability. Background noise is very low and at first it seems that the set is not going to work but tuning in should result in a good performance. Another thing to check is the aerial leads that connect to the frame aerial usually in the 'lid'. You may have a ferrite rod in yours and this is much less likely to suffer the connecting wires problem. Hope you liven it up a bit! Regards John.