On 8/19/20 9:06 PM, Miro, N9LR via groups.io wrote:
So, based on what Dave and Jerry are pointing out, I have two VALID conclusions
1) Antenna tuners suck! They make t-line/antenna go gently on TX, but they hide what's behind them. Strive to have (at least) antenna matched to t-line, then antenna tuner (might) make more sense, or even better, match TX to t-line to antenna and sell antenna tuner on ebay
Not necessarily - for small mismatches, the tuner, even at the end of a transmission line with 10% loss (1/2 dB) makes it so you don't have to go out and keep readjusting an antenna that's narrow band, or it means you can use the same antenna on different parts of the band. The incremental loss from using an antenna resonant with 100kHz bandwidth at 7MHz at 7.3 MHz is going to be pretty small.
2) I still have no idea what is the answer to my question :)
* short run of low loss t-line
* no match between TX, t-line, antenna impedances
* antenna tuner makes t-line/antenna appear to TX as TX's impedance (SWR at that point is 1:1)
