Guys
thanks for the quick answers.
One information I have missed in my previous email is that I have a 3rd
tower where I have a tribander beam with separate feed lines and more far
from the 40M beam.
If I switch antenna on 20M in RX between monobander and this tribander the
2nd H signal doesn't change a db on the S-meter.
I guess this is another evidence that the produced 2H is not received by
the antennas outside.
Do I have rusty towers? YES
Is the sound of 2nd H flaggered? YES
For now I will try to change internal coax cables and will give you a
feed-back.
TNX for now and if you have more hints to solve my issue I am QRV.
**** Luca IK2NCJ ****
2017-09-13 18:47 GMT+02:00 Jim Brown <jim@audiosystemsgroup.com>:
> This is very good advice, but it is likely to be PART of a solution, not
> THE solution.
>
> W2VJN's approach is not the best one. This is the best one.
>
> http://k9yc.com/LocatingStubs.pdf and http://k9yc.com/StubPlacement.pdf
>
> Here's a practical implementation in W6GJB's contesting trailer.
>
> k9yc.com/7QP.pdf
>
> We can run two 500W stations with K3 and KPA500 on adjacent CW bands
> (80/40, 40/20) with antenna feedpoints within about 1 meter. Photos show a
> tribander on a separate portable support, but we're now running it on the
> pneumatic mast with the 40M dipole.
>
> 73, Jim K9YC
>
>
> On 9/13/2017 8:17 AM, Ron Watson wrote:
>
>> About a year ago I had a similar problem but with a K3 and IC-7600. I
>> determined that the main culprit was the RG-213 jumpers from the rigs to
>> the Hamation filters (also tried Dunstar 600's). When I replaced those two
>> jumpers with RG214 it got rid of most of the leakage, finally changed those
>> two jumpers to quarter inch Heliax and was barely detectable with either
>> filter brand.
>>
>
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>
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