10-12-2014, 04:59 PM
This place says they have them as well.
http://www.vacuumtubes.net/Prices%20F123...QV04-7.htm
But unless the filament is burned out, or the tube is missing I kinda doubt it is the problem. I have had more issues with bad silver micas in the front end. I have also had problems with the 7F8 converter tube as well. They will work fine on AM and SW, but won't oscillate at the frequencies required by FM if weak.
http://www.vacuumtubes.net/Prices%20F123...QV04-7.htm
But unless the filament is burned out, or the tube is missing I kinda doubt it is the problem. I have had more issues with bad silver micas in the front end. I have also had problems with the 7F8 converter tube as well. They will work fine on AM and SW, but won't oscillate at the frequencies required by FM if weak.
John
Las Vegas, NV USA
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