Topband: Any way to check isolation transformer for FCP

Guy Olinger K2AV k2av.guy at
Sat Jan 16 23:04:09 EST 2016

Hi Andy,

I'll be responding to you off reflector tomorrow. 73, Guy K2AV

On Saturday, January 16, 2016, Andrejs Pankins <yl2qn.andy at> wrote:

> Hello,
> 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.
> Regards,
> Andy - YL2QN
> _________________
> Topband Reflector Archives -

Sent via Gmail Mobile on my iPhone

More information about the Topband mailing list