UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

Neil Purling · 11th Jul 2006, 10:06 am

The signal level required by the 6V6: 12 volts p-p, or dc measurement with a AVO?
I would like to boost the audio somewhat if I can.
Have any of those members who've built TRF radios been able to follow the signal through the set with a 'scope?
I need to know what sort of signal level a EF39/6K7 or a EF91 would give used as a detector. Then I know what sort of additional boost I need to arrange with the extra triode of a 6SN7GT.

11th Jul 2006, 10:06 am	#5
Neil Purling Nonode Join Date: Jul 2005 Location: Hull, East Yorkshire, UK. Posts: 2,087	Re: Regarding home made TRF The signal level required by the 6V6: 12 volts p-p, or dc measurement with a AVO? I would like to boost the audio somewhat if I can. Have any of those members who've built TRF radios been able to follow the signal through the set with a 'scope? I need to know what sort of signal level a EF39/6K7 or a EF91 would give used as a detector. Then I know what sort of additional boost I need to arrange with the extra triode of a 6SN7GT.