[Heathkit] Tuning up a HW-101 or a HW32A

Jim Isbell millenniumfalcon at cableone.net
Sat Aug 7 13:31:22 EDT 2004


I have both an HW-101 and a HW-32A.  I would like to tune them up on 20 
meters using my 96' inverted "L" (tunes 40 meters at 50 ohms) antenna. 
 I am currently using my S-Line without a tuner on this antenna on 40 
meters and it works fine.

I want to use an antenna tuner to match the HW rig to the antenna.  I 
have a couple of tuners. with input and output capacitors and a roller 
inductor between. that are all tunable and both include an SWR meter on 
the panel.

My plan was to use a dummy load to tune the transmitter to frequency at 
50 ohms load then put the tuner in the line to the antenna and match the 
trans to the antenna by adjusting the tuner and not the transmitter. 
 BUT......where should I set the caps and the inductor to start with? 
 In the past when I tried this I usually found that the tuning was so 
far off that the resulting meter movements tended to be artificial until 
I twiddled about for a while and finally got it into some semblance of 
correct.  I don't like "twiddling around for a while"  It seems scary to 
the life of the finals.

I need to know the initial adjustment procedure so that I don't wipe out 
my transmitter before I can get it into range of a reasonable SWR.  Any 
suggestions for the initial values?....maybe all midrange to start..??? 
 Maybe one min or max to start???



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