Lafayette Dyna-com 23 schematic

[satellit]

Hi, does anyone have the dyna-com 23 schematic?
Many thanks

 

[danmcclain]

Hi, does anyone have the dyna-com 23 schematic?
Many thanks

Here's the schematic for the Lafayette Dyna-Com 23. If you need more info just let me know... Dan

 

[satellit]

thank you

 

[danmcclain]

thank you

I have quite a few Sams so if I have it then you get it...Dan

 

[nomadradio]

Can't remember if that's the one with plastic screws holding down the two audio-power transistors. We adopted the habit of putting a 1N4001 rectifier diode in parallel with the thermistor "TH" in the schematic. The cathode of the diode goes to ground. Found that this prevents the audio transistors from overheating and melting the plastic screws. The transistor pulls away from the heat sink and thermal runaway follows immediately. Another good reason to make sure you have the right size fuse on these old radios.

73

 

[epkoncept]

Here's the schematic for the Lafayette Dyna-Com 23. If you need more info just let me know... Dan

thank you for posting.
Are there more pages of the schematics ? I don't see the synthesizer portion ?
Sincerely
P

 

[danmcclain]

thank you for posting.
Are there more pages of the schematics ? I don't see the synthesizer portion ?
Sincerely
P

Sorry there were only 2 pages of schematic in the section... Dan

 

[brandon7861]

I don't see the synthesizer portion ?

 

[epkoncept]

View attachment 76935

 

[epkoncept]

dan:
sorry, senioritis struck again. I was thinking of a more modern radio syn, I forgot that a long time ago, radios used banks of crystals to mix pairs of xtals to synthesize the 23 channels. https://www.cbcintl.com/XTALS/AM 16965-9545-1000.pdf
Thank you

 

[danmcclain]

dan:
sorry, senioritis struck again. I was thinking of a more modern radio syn, I forgot that a long time ago, radios used banks of crystals to mix pairs of xtals to synthesize the 23 channels. https://www.cbcintl.com/XTALS/AM 16965-9545-1000.pdf
Thank you

No problem... Always glad to help if I can... Dan

 

[epkoncept]

Dan: I just bought a Dyna-Com 23 and I should have it a few weeks. If there are other pages in the document you have, would you be able to post them if its not too much trouble ?
Sincerely
Peter

 

[danmcclain]

Dan: I just bought a Dyna-Com 23 and I should have it a few weeks. If there are other pages in the document you have, would you be able to post them if its not too much trouble ?
Sincerely
Peter

I'll scan it in the morning... Dan

 

[danmcclain]

I'll scan it in the morning... Dan

Here is all the other info on the Lafayette Dyna-Com 23, less the schematic which is posted already... Dan

 

[epkoncept]

Dan: thank you very much for posting the pdf of the remainder of the info on the Dyna-Com 23. I hope the odd ball final transistors are good, 2SCF6 and 2SCF8. Never came across JP transistors with such a short number.
P