[Elecraft] Feedline loss w/wo tuner

[Fred Jensen]

Indeed!  I don't remember when the acronym "SWR" crept into the Amateur 
lexicon, or we became concerned about it, but I'm pretty sure I was 
rapidly approaching "OT Status" when it happened.  Early on, we link 
coupled to the final tank inductor and any reactance in the feedline 
just changed the resonant point which was adjustable of course.  With 
the advent of the ubiquitous pi-network, we were just matching the 
impedance presented by the feedline to the plate impedance of the PA's 
[a couple of K ohms or so].

There is probably no single thing in a ham station more misunderstood 
[or mis-named] than "The Antenna Tuner."

73,

Fred K6DGW
Sparks NV
Washoe County DM09dn

On 4/27/2016 12:21 PM, Don Wilhelm wrote:

> One thing that is often overlooked in these discussions is that older
> tube type transmitters had an adjustable output network which had a
> sizable range for matching antennas.  You would 'dip the plate' and
> adjust the 'loading' until you could feed the antenna efficiently.  With
> that, one did not have to pay much attention to SWR or the feedpoint
> impedance.  The PA output network did the job of matching the plate load
> resistance to whatever was connected to the network output (the antenna).