[Elecraft] Feedline loss w/wo tuner

[Edward R Cole]

Well my guess that most hams have the tuner at the radio (or inside 
the radio).

I was trying to minimize my cost when I bought my K3/10 (only $2900 
with accessories), so I did not buy the 100w amp or atu.  I already 
had a used MFJ mobile tuner (good to 200w) so that sufficed.  The MFJ 
finally died (not worth fixing) so I bought a used Drake MN2000 
manual tuner.  It handled my CCI 300w amp (and gave a handy RF meter 
to show output).  It is in the shack (arms not long enough to reach 
the knobs on top of my tower at 50-feet).

I only have two operating HF antenna: 80-40m fan inverted-V and 
Hygain TH3mk4 triband yagi.  80m matches where I operate (75m phone) 
and 40m needs a  bit of tuner with 3:1 SWR.  The old tribander needs 
a bit on all bands.  Tuner only use is to make the ssa happy with 
providing a 50-ohm load.  Feedlines are about 80-foot.

I have one more wire antenna which is used on 600m: 43x122 foot 
inverted-L.  I has a huge base coil for matching.  SWR bw is about 
5-KHz (495-500 KHz) and efficiency is < 1%.  But my 4w ERP has been 
received in Buffalo, NY; not too shabby.  Feedline SWR runs about 1.5 
for the 100w amp.

My first transmitter was the DX35 with 6146 and pi-net output 
tank.  Peak n Dip could load anything.  SWR? whas dat?  I did not 
have a power meter.  FCC regs told me I could run 75w dc input.

73, Ed - KL7UW
http://www.kl7uw.com
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