Hello Clemens,

Saturday, June 24, 2017, 11:34:18 AM, you wrote:

> Hi Chris, 

>>Can I wind the isolating
>>transformer as a 1 : 1 and do impedance matching (which changes with
>>weather / foliage growth) indoors using a tapped combiner auto
>>transformer? 

> This would be possible but more or less lossy.
> What is the impedance as seen by your AIM when you measure on the
> secondary side of the 1:1 isolation transformer
> with antenna and feeder connected to the primary winding?
> How long is the coax between the isolation- and the auto-transformer?
> With these data it is easy to predict the losses quite accurately.

> 73
> Clemens
> DL4RAJ 

I'll  do  some testing tomorrow, been trying to gain a bit of vertical
height  today  and  have  run out of "play time". Just to be sure, you
want  me  to  reverse  the  connections  so  the AIM is looking at the
winding  that  would  normally go to the loading coil, and the loading
coil  and  antenna is connected to the winding that would normally go,
via about 50 feet of co-ax, to the auto transformer in the shack bound
combiner?

Thanks for your help!




-- 
Best regards,
 Chris                            mailto:[email protected]