[TenTec] TenTec Digest, Vol 137, Issue 51

[Rick - DJ0IP / NJ0IP]

I was speaking of a manual tuner sitting beside the transceiver, not remote.

Running 100w through a remote auto tuner with balun (even 4:1 balun) is
usually not a problem.
If you up the power to 1kW and try to match an openwire fed antenna with a
remote tuner and 4:1 balun, you will often have common mode current problems
that do destructive things.  You can use a 1:1 balun and usually get the
common mode current under control, but then your remote tuner won't find a
match because its matching range is no broad enough.

In theory you can do this, but if we look to the specific products on the
market today, you can't, except with a German built tuner costing about
$2000.  

Low power does have its advantages!  :-)

73 - Rick, DJ0IP
(Nr. Frankfurt am Main)


-----Original Message-----
From: TenTec [mailto:tentec-bounces at contesting.com] On Behalf Of Spencer
Sent: Friday, May 23, 2014 6:58 AM
To: tentec at contesting.com
Subject: Re: [TenTec] TenTec Digest, Vol 137, Issue 51

tentec-request at contesting.com wrote:
> External manual tuners work MUCH better than remote auto-tuners.
>
> 73 - Rick, DJ0IP
> (Nr. Frankfurt am Main)
>
>
> -----Original Message-----
> From: TenTec [mailto:tentec-bounces at contesting.com] On Behalf Of 
> Spencer
>
>
> Built in ATUs are OK but remote auto-tuners work better.
> Spencer W1GAK
I have a remote 150 watt auto-tuner that works FB with a balun on the
output.
I don't need to be concerned with feed line loss and the tuner,feed line and
camper are not part of the antenna.
I have never used a remote manual tuner.
Spencer
W1GAK
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