Re: wire for random wire antenna using kx3

Posted by W2xj on Dec 19, 2018; 2:05am
URL: http://elecraft.85.s1.nabble.com/wire-for-random-wire-antenna-using-kx3-tp7647146p7647225.html

To be fair, solid state PAs are far less forgiving about match than were tubes. This is completely due to broadband design. This can be solved by including an ATU as is done with a number of Elecraft products either as an option or a feature. In the end it is about what it takes to keep the PA happy.

Sent from my iPhone

> On Dec 18, 2018, at 17:00, Fred Jensen <[hidden email]> wrote:
>
> Yep, the term was known when I became KN6DGW in 1953, but somehow no one cared.  Standing waves were sort of benign, you ran your transmission line [often 300 ohm open-wire, or TV twinlead] to the 2 or 3 turn link and adjusted it inwards until your TX was "loaded" to rated input power.  Standing waves formed the basis of "Lecher Lines" used to measure frequency [well ... wavelength] generally for VHF and above.  Standing waves just didn't create the heartburn that they seem to today.  Granted, today's TX are comfortable with 50 ohms and not much else but that's just impedance matching networks.
>
> 73,
> Fred ["Skip"] K6DGW
> Sparks NV DM09dn
> Washoe County
>
>> On 12/18/2018 3:32 PM, Wes Stewart wrote:
>> T. A. Gadwa, “Standing Waves on Transmission Lines”, QST, December 1942, pp. 17-21.
>>
>> Wes  N7WS
>
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