I discovered the answer to my question while going through the schematics
today. The accessory plug on the FT-902DM has a jumper across pins 1&2
which when cut, disconnects the filaments to the 6146 final tubes. I
imagine that this design practice is carried over to the rest of the product
line from this era.
Tom K3GM
>
> I would like to use my venerable FT-902DM as an I.F. for a couple of
> transverters. I *think* I need to find a way of shutting off the screen
> grid voltage to the 6146's to disable them when transmitting. I plan to
use
> the "RF Out" jack which exits right before the PA of the '902. Does
anyone
> know if I'm on the right track? The FTV-901 transverter uses a cable
> attached to the accessory socket, but I'm not sure what pins it uses. I'd
> appreciate any assistance you can offer.
>
> Thanks,
> Tom K3GM
>
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