Topband: Any way to check isolation transformer for FCP

Andrejs Pankins yl2qn.andy at
Sat Jan 16 18:44:21 EST 2016


Need your help. For a long time can't get working FCP for my Inverted L.

I'm looking for some way to check quality of my homemade isolation
transformer. I'm connect primary to 50 Ohm dummy load and secondary to
Antenna Analyzer. Get reading @1850 Ra=28 Ohm and Rx=34 Ohm. Rx is raised
with frequency. Inductance for primary and secondary is 5.7uH. Capacitance
between primary and secondary is 140 pF.

These reading looks normal or somthing wrong ? I'm expected 1:1 impedance
transformation without additional Rx.

Thanks a lot in advance for your help.

Andy - YL2QN

More information about the Topband mailing list