If adjustments are required several times a week for the 160M antenna, I
would then question the electrical stability of the 160M antenna. In
otherwords, why and what is changing?
I see very little change in mine, wet, dry, ice, or snow. Usually I find
it to be 1:3:1 or less across the band, any frequency and at any season.
73
Bob, K4TAX
On 12/15/2019 9:31 AM, Andy Durbin wrote:
"Extremely easy to do manually and stable."
It is only because my 160 and 80 m OCFD is being modified frequently that I
decided to develop the auto trainer. It takes multiple actions to tune a
single bin and there are 20 bins for 160 m. If a multi-step task needs to be
done infrequently the effort required to automate it is not justified. Do that
task several times a week and the effort is easily justified.
Actions to auto tune at current frequency:
1. Inhibit the key line and wait for confirmation of inhibit
2. Initiate KAT500 auto tune (FT;)
3. Set Kenwood to TX Tune and set auto tune power
4. Wait for KAT500 FT response which indicates tune is complete
5. Set Kenwood TX Tune power back to 5 w then command RX
6. Wait for confirmation that TX has stopped
7. Enable the key line
Since that sequence had already been assigned to a single button push it was
not too difficult to repeat it for each bin in the current band.
Andy, k3wyc
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