[Elecraft] KATxxx Remote Tuner

[ab2tc]

Hi,

I know nothing about BC transmitters and antennas but in our world of
amateur radio solid state transmitters it is imperative that the
transmission line presents a load close to 50 ohms resistive to the
transmitter. The transmitter doesn't care how this is accomplished as long
as it sees a good match to 50 ohms. The simplest, of course, it to have a
resonant antenna (close to 50 ohms resistive - resonance is no guarantee of
a 50 ohm load) and a good low loss 50 ohm coax transmission line. If the
antenna is far from 50 ohm resistive, a tuner (more correctly called a
matching network) is required somewhere between the antenna and the
transmitter. If the actual loss of the transmission line under the
mismatched condition is not too high, it's perfectly OK to have the tuner
close to the transmitter. If these conditions are not satisfied, the tuner
is best located close to the antenna feed point with the extra cost and
effort that involves.

AB2TC - Knut



W2xj wrote
> You can get an AT-615B from Array Solutions now and do this. I put 10 in a
> club station for our various wire arrays. They do everything you need.
> 
> BTW I disagree about this 50 Ohm antenna thing. In my world of commercial
> high powered broadcasting 30 MHz and under, there are almost never
> resonant, matched 50 ohm arrays.  
> 
> Sent from my iPad
> 
>> On Apr 19, 2020, at 8:41 AM, Richard Thorne <

> rthorne@

> > wrote:
>> 
> <snip>





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