"MRW" wrote in message
oups.com...
Good day!

In some of the articles that I'm reading, I keep seeing references to
a DC injector use in RF ports. I really don't know what this means and
what the DC injectors are used for. The only think that I can think of
is for some DC voltage control for a voltage controlled oscillator
(VCO).

Thank you!

Supplying DC power for a preamplifier or transverter trough the antenna
cable for instance.