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PCB for the M57762
Posted: Mon Jun 03, 2024 9:10 am
by g6hfs
Hi,
Looking for a pcb for the older brick amp M57762 5 pin version, any out there.
Brian
Re: PCB for the M57762
Posted: Mon Jun 03, 2024 11:25 am
by M0SKM
Bert Modderman makes them
http://pe1rki.com/amplifiers.html
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Powermodule Amplifiers
Re: PCB for the M57762
Posted: Mon Jun 03, 2024 1:56 pm
by g0uhy
Hi Brian,
Sam, G4DDK, used to supply a PCB which was designed by GM3SEK. Here's a link to the article.
http://www.g4ddk.com/AN4.pdf
I hope that helps?
73
Malcolm G0UHY
Re: PCB for the M57762
Posted: Mon Jun 03, 2024 5:00 pm
by G3GJA
Hi Brian & Malcolm
Brian's module is the original Bipolar design which will give 13dB gain and 5W of clean DATV.
The GM3SEK boards are no longer available and are only suitable for the later MOSFET versions as are the Enigma PCBs.
The M57762 needs a 9v bias supply capable of up to 500mA whereas the MOSFET versions have bias supplies typically up to 5v and 1mA.
73
Clive G3GJA