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| Vintage Radio (domestic) Domestic vintage radio (wireless) receivers only. |
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29th Sep 2020, 5:32 am
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#1 |
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Diode
Join Date: Sep 2020
Location: Calista, Western Australia, Australia.
Posts: 4
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Gambrell One Valver
I have acquired a one valve Gambrell 'receiver'.
Marked Gambrell Bros London and No 11461. It has a PM22A in at the moment and 2 coils external (tickler?) I can find no information on Gambrell one valve radios. Pic will be posted asap. Baz |
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29th Sep 2020, 12:41 pm
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#2 |
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Hexode
Join Date: Jan 2018
Location: Cannock, Staffordshire, UK.
Posts: 268
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Re: Gambrell One Valver
Maybe:
https://www.radiomuseum.org/dsp_hers...ompany_id=5546 has something similar ? It maybe a case of reverse engineer it, should not be to bad with just one valve? |
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30th Sep 2020, 12:51 am
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#3 |
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Diode
Join Date: Sep 2020
Location: Calista, Western Australia, Australia.
Posts: 4
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Re: Gambrell One Valver
Thanks for the reply. The museum has nothing like mine. I could reverse engineer, that's not what I am looking for. I need ANY information, pics etc. I have never found any similar radio.
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1st Oct 2020, 1:49 am
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#4 |
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Diode
Join Date: Sep 2020
Location: Calista, Western Australia, Australia.
Posts: 4
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Re: Gambrell One Valver
Pics of Gambrell 1 valver
The radio has connections for ant, ground, headphone. Controls, osc filament magnifier filament and tuning Has a PM22A fitted. place for presumably power leads at rear, not marked. |
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1st Oct 2020, 10:13 am
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#5 |
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Dekatron
Join Date: Feb 2007
Location: Leominster, Herefordshire, UK.
Posts: 16,535
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Re: Gambrell One Valver
The PM22 is unlikely to be correct since it's an output pentode, unless there's any original looking connection to its side terminal. A PM1HF would be a more likely candidate for a single detector with reaction set.
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....__________ ....|____||__|__\_____ .=.| _---\__|__|_---_|. .........O..Chris....O |
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2nd Oct 2020, 1:00 am
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#6 |
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Diode
Join Date: Sep 2020
Location: Calista, Western Australia, Australia.
Posts: 4
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Re: Gambrell One Valver
OK thanks,
PM1HF seems to be a collector valve now and expensive. I think this radio will be at the end of the queue for a while and be an ornament. Baz |
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2nd Oct 2020, 5:18 pm
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#7 |
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Dekatron
Join Date: Feb 2007
Location: Leominster, Herefordshire, UK.
Posts: 16,535
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Re: Gambrell One Valver
Pretty much any B4 based battery triode would work. Maybe just triode connect that PM22.
Or use an adaptor and try a triode connected 1T4 or similar 1.4V B7G bottle. Nothing to lose and a bit of fun.......
__________________
....__________ ....|____||__|__\_____ .=.| _---\__|__|_---_|. .........O..Chris....O |
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