In article ,
Steve Ratzlaff wrote:

I had a bad experience with a Stridsberg active coupler, for 2
outputs. I bought it mainly for use below HF. It didn't work--had
excessive loss below about 3MHz. I took it to work and swept it, and
sure enough it steadily had more and more loss, starting about 3MHz;
at 500kHz it had about -20dB loss compared to 3MHz. Its specs claimed
"good to 100kHz", but that wasn't true. Stridsberg refused to correct
it--after sending my unit back twice for "repair", and having it
returned with no change from original, I returned it and got my money
back. If your interests are 3MHz and above, the Stridsberg active
coupler will work fine, but not below that, if you want. (My unit
consisted of an input lowpass filter, a MMIC amplifier feeding a
MiniCircuits splitter to the two outputs--if you're interested in
technical details.)

Sounds like they screw up on the series coupling capacitors that were
used. Maybe the capacitors were the right value except off by a decade
like 4.7uF as opposed to .47uF.

--
Telamon
Ventura, California