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Audio and Video Talk
Valves / Vacuum Tubes
NOS Heathkit AJ-12E Valve Stereo FM Tuner Help Please
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<blockquote data-quote="kubusi" data-source="post: 802668" data-attributes="member: 19010"><p>Ampdog, that was a very good idea to change the transistors of the Mohican to more modern NPN types sorry I did not think of that improvement myself. In my case the single can electrolytic of 1000uf + 1000uf + 1000uf was shot so as I had to remake the PCB to fit separate caps I also changed the detector to that of a product detector, did away with the BFO and used 2 crystal oscillators for the upper and lower side bands. Still retaining PNP germanium transistors for the modification.</p></blockquote><p></p>
[QUOTE="kubusi, post: 802668, member: 19010"] Ampdog, that was a very good idea to change the transistors of the Mohican to more modern NPN types sorry I did not think of that improvement myself. In my case the single can electrolytic of 1000uf + 1000uf + 1000uf was shot so as I had to remake the PCB to fit separate caps I also changed the detector to that of a product detector, did away with the BFO and used 2 crystal oscillators for the upper and lower side bands. Still retaining PNP germanium transistors for the modification. [/QUOTE]
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Audio and Video Talk
Valves / Vacuum Tubes
NOS Heathkit AJ-12E Valve Stereo FM Tuner Help Please
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