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Vintage Radio (domestic) Domestic vintage radio (wireless) receivers only. |
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23rd Nov 2010, 10:38 pm | #1 |
Guest
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Transistor radio with RF amp etc.
Hi all,
Out of sheer interest has anyone got a circuit or a reference for the BVWS CD rom for a radio with an RF stage and/or seperate oscillator using the OC series transistors? |
23rd Nov 2010, 11:11 pm | #2 |
Retired Dormant Member
Join Date: Mar 2006
Location: Sheffield, South Yorkshire, UK.
Posts: 1,587
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Re: Transistor radio with RF amp etc.
The Dansette portable used oc series transistors but I think the signal fed straight into the freq changer there was no RF amp stage.
Mike |
23rd Nov 2010, 11:35 pm | #3 |
Hexode
Join Date: Nov 2003
Location: Linkoping, Sweden
Posts: 493
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Re: Transistor radio with RF amp etc.
If we count the American and Japanese radios with other than the OC series there are lots of them,but finding types with them old OC:s is much harder.Here's at least one:
http://www.jamesbutters.com/siemenstransetta2.htm |
24th Nov 2010, 1:00 am | #4 |
Dekatron
Join Date: Feb 2007
Location: Leominster, Herefordshire, UK.
Posts: 16,536
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Re: Transistor radio with RF amp etc.
Does the EC10 count?
http://www.qsl.net/vk3jeg/ec10_cct.gif RF, osc, mixer, 3 IF ..... all OC transistors (albeit OC171 in the RF stages).
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24th Nov 2010, 1:09 am | #5 |
Rest in Peace
Join Date: Dec 2008
Location: Burton upon Trent, East Staffordshire, UK.
Posts: 1,686
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Re: Transistor radio with RF amp etc.
That looks like a splendid beast, I want one, even though it doesn't have valves.
Who made it? Alan |
24th Nov 2010, 2:23 am | #6 |
Retired Dormant Member
Join Date: Mar 2006
Location: Sheffield, South Yorkshire, UK.
Posts: 1,587
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Re: Transistor radio with RF amp etc.
That is an Eddystone I think Alan
Mike |
24th Nov 2010, 9:19 am | #7 |
Rest in Peace
Join Date: Dec 2008
Location: Burton upon Trent, East Staffordshire, UK.
Posts: 1,686
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Re: Transistor radio with RF amp etc.
Mike,
So it is Thanks. Alan |
29th Nov 2010, 7:11 pm | #8 |
Heptode
Join Date: Nov 2009
Location: London, Ontario, Canada
Posts: 675
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Re: Transistor radio with RF amp etc.
The Russian Vef-206 (Tento) and its derivatives have separate RF amp, mixer, and oscillator circuits. They use germanium PNP transistors, though not the OC series, but the P423 and P422 in the RF and IF stages.
Peter |