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Ferguson 391T Radiogram
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25-04-2017, 02:17 PM
Why the PCF80 TV tuner valve in a radiogram? Supplying 9V for the heater would have been an extra expense. Maybe Ferguson had loads of them around from TV production and it was more economic to make a 9V heater supply than stock the ECF80 or other small signal triode-pentode in small quantities.
www.borinsky.co.uk Jeffrey Borinsky www.becg.tv
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| Messages In This Thread |
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Ferguson 391T Radiogram - by Murphyv310 - 24-04-2017, 07:32 PM
RE: Ferguson 391T Radiogram - by Murphyv310 - 25-04-2017, 01:08 PM
RE: Ferguson 391T Radiogram - by Geordie McBoyne - 25-04-2017, 02:12 PM
RE: Ferguson 391T Radiogram - by ppppenguin - 25-04-2017, 02:17 PM
RE: Ferguson 391T Radiogram - by pwdrive - 25-04-2017, 02:45 PM
RE: Ferguson 391T Radiogram - by ppppenguin - 25-04-2017, 03:45 PM
RE: Ferguson 391T Radiogram - by Murphyv310 - 25-04-2017, 04:25 PM
RE: Ferguson 391T Radiogram - by Geordie McBoyne - 25-04-2017, 07:23 PM
RE: Ferguson 391T Radiogram - by Synchrodyne - 26-04-2017, 01:17 AM
RE: Ferguson 391T Radiogram - by ppppenguin - 26-04-2017, 08:37 AM
RE: Ferguson 391T Radiogram - by Murphyv310 - 25-04-2017, 09:03 PM
RE: Ferguson 391T Radiogram - by Murphyv310 - 26-04-2017, 07:21 AM
RE: Ferguson 391T Radiogram - by Geordie McBoyne - 26-04-2017, 09:23 AM
RE: Ferguson 391T Radiogram - by Murphyv310 - 26-04-2017, 09:39 AM
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