[amsat-bb] "Reverse" bias-tee ??

Hi everyone.

The schematic makes me think "yes", but I wanted to check before making a purchase.

Normally a bias-tee is used to inject a DC voltage onto your coax to power a pre-amp. Since some pre-amps aren't powered off the coax, but rather from a separate pair of pins, I was wondering if you can use a bias-tee AT THE PRE-AMP to extract the DC voltage off our coax for connection to those external power pins on the pre-amp?

Running a separate cable to power the pre-amp is not the end of the world, but it would be convenient if I could turn on the bias voltage available on the Airspy or RTL-SDR and then extract it up at the antenna to power a pre-amp.

Thanks for any recommendations!

-Scott, K4KDR