Hi Chris,
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?
I'm not sure if I understand your description correctly so I try with a block
diagram.
Is it like this?
TRX - short coax - autotransformer - longer run of RG-213 - isolation XFM 1:1 -
loading coil - feeder - antenna
73
Clemens
DL4RAJ
>-----Original Message-----
>From: [email protected]
>[mailto:[email protected]] On Behalf Of Chris Wilson
>Sent: Saturday, June 24, 2017 6:32 PM
>To: Clemens Paul
>Subject: Re: LF: RE: Transformer questions.
>
>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]
>
>
>
>---
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