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Power interfacing the DEM 13 ULNA 2.4GHz preamp



Don, W4VQA received one of these last week, and has been
looking at various ways to feed power to it when up on the
tower.

He has two down-converters under "test" -- a DEM and a
TransSystem. He would like to be able to feed power from the
downconverter thru its input connector, to the preamp.

After initial inspection of each unit, he was thinking the
following:

On the TransSystem, insert a chip cap at the input and
decouple the DC with a small choke.

On the DEM, not sure. Looks like there is a coil to ground
at the input. Looking for ideas on this one. Assistance from
the factory may be necessary here.

Question: has anyone interfaced a preamp in this manner to
either of these two units?

Thanks and 73,
Art N3OY
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