Topband: Dipole/remote tuner

[Wes]

Also Dan, AC6LA's TLDetails is free:

https://ac6la.com/tldetails1.html

Wes  N7WS

On 11/15/2022 2:25 AM, Jim Brown wrote:
> On 11/14/2022 11:41 PM, Roy Morgan wrote:
>> Do not spend money on a remote antenna tuner till you understand transmission 
>> line truth.
>
> Yes, there is much that is misunderstood about transmission lines by those who 
> have chosen not to learn the fundamentals. The ARRL Handbook is a great place 
> to start.
>
> Unless the transmission line for a 160M antenna is VERY long, it makes little 
> sense to go to the trouble of weatherproofing a dedicated autotuner at the 
> antenna, even if the antenna is a terrible match to the line. That's because 
> loss in any decent RG8 is quite low at 2 MHz, and even with a fairly long 
> line, bigger coax is probably a lower cost and much simpler solution.
>
> If you know the complex feedpoint impedance, there are many computer programs 
> and apps that can compute the loss in nearly all popular feedline type. Many 
> analyzers can measure it and output it as a data file for use in those 
> programs. The CD that comes with the ARRL Antenna Book includes N6BV's TLW, 
> which can make that calculation for the data at any single frequency.
>
> 73, Jim K9YC
> _________________
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