[Premium-Rx] More on Racal 6790/GM R-2174(B)

[Frank Zurneck]

Hi,

 

> 2.  The A14 board supplies the external 3rd IF output at about 15kHz, and
also the IF output at 455kHz (it may get this via A24 and A25). It > appears
to do product detection of some sort via a CD4049.  It has a dip switch,
too!

 

A14 seems to be an IF Converter Card (twin converter if the ISB part is
populated) which can be varied in frequency between 5 and 100KHz The
frequency is set via the dip switch. I can provide schematic and dip switch
settings if needed.

 

Regards, Frank

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