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Vintage Radio (domestic) Domestic vintage radio (wireless) receivers only. |
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28th Jan 2018, 2:59 pm | #1 |
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Another Radio - Please Help Identify
Hi - I'm having difficulty identifying this old radio. It looks like a Cossor but I can't pin it down to a particular model. The radio sits on top of a locked cupboard - presumably for spare valves.
Any help in pointing me in the right direction would be gratefully received. |
28th Jan 2018, 3:12 pm | #2 |
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Re: Another Radio - Please Help Identify
Surely the cupboard was for batteries/accumulator?
Has a home brew look about it, all standard components. |
28th Jan 2018, 5:02 pm | #3 |
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Re: Another Radio - Please Help Identify
You are quite right - it would be for a battery.
I'm trying to establish the voltages needed - presumably 1.5v for the LT and 50-60 for the HT? |
28th Jan 2018, 5:06 pm | #4 |
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Re: Another Radio - Please Help Identify
Well worth rebuilding, not quite a restore, with new wire done all neatly. The valves are more than likely OK, I have yet to find a duff one like that.
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28th Jan 2018, 6:08 pm | #5 |
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Re: Another Radio - Please Help Identify
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28th Jan 2018, 6:43 pm | #6 | |
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Re: Another Radio - Please Help Identify
Quote:
It will need probably 120V for the output valve 60 V or so for the detector.It will also need grid bias for the output valve. probably somewhere between -3V and -9V Knowing the valve types would help a lot but they look typical mullard types such as PM1HF, PM1LF, PM2 Total guess Cheers Mike T
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Invisible airwaves crackle with life or at least they used to Mike T BVWS member. www.cossor.co.uk |
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28th Jan 2018, 7:31 pm | #7 |
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Re: Another Radio - Please Help Identify
Thanks eeveryone - the "woodscrews" are actually bolts with a slot head. They connect to a metal chassis holding the radio internally.
The lettering on the valves has mostly worn away but on one I can just make Mullard PM2 |
28th Jan 2018, 7:44 pm | #8 |
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Re: Another Radio - Please Help Identify
The PM2 is the output valve and is a 2V filament type
So chances are they are all 2V filaments. Unless the circuit uses auto-bias it will probably need -9V grid bias You might need to reverse engineer some of the circuit Cheers Mike T
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Invisible airwaves crackle with life or at least they used to Mike T BVWS member. www.cossor.co.uk |