hard to read my schematic but applied a 1kh tone at R85 which I think connects to IC104 pin2. Heard a very, very faint 1k tone in the speaker but did not see any modulation in the outputApply some audio to leg 2 of IC104 and come back with result.
Mike
WEAK AUDIO IN THE SPEAKER, NO MODULATION OF CARRIERhard to read my schematic but applied a 1kh tone at R85 which I think connects to IC104 pin2. Heard a very, very faint 1k tone in the speaker but did not see any modulation in the output
DID, GOT WEAK AUDIO OUT OF SPEAKER, NO MODULATIONApply some audio to leg 2 of IC104 and come back with result.
Mike
hard to read my schematic but applied a 1kh tone at R85 which I think connects to IC104 pin2. Heard a very, very faint 1k tone in the speaker but did not see any modulation in the outputApply some audio to leg 2 of IC104 and come back with result.
Mike
applied the tone to the mic input pins and got modulation on the internal meter on all selections, on the output RF appeared to be modulated.Increase level of that audio.
SSB path goes different way than FM, so check both.
assuming mic element is bad as audio applied to the mic voice input pins shows modulation on all bands now.Increase level of that audio.
SSB path goes different way than FM, so check both.