[Lowfer] LF Vertical Antennas problem...

[Bill Ashlock]

Warren,

Are you by chance comparing performance between the winter season and 
summer? 10db would be a typical increase in loss for a vertical located near 
trees due to the foliage in the summer. There is also an increase in ground 
losses when the ground is not frozen.

Bill



> Hello the list,
>
>    I have in the past used my 160 meter dipole as a vertical "T" by tying 
> the feeders together and using a tapped loading coil to resonate and match 
> the antenna. I could get a perfect 50 ohm match in this manner and it 
> radiated quite well - Hartmut copied my transmission running around 100 
> watts. I have also used the same setup on 500kHz with a different loading 
> coil successfully.
>
>   Now I find that I cannot resonate the antenna - I can't eliminate the 
> reactance no matter what the setting of the tap or the coil. The best I 
> can do is an swr of 1.7:1 and at least 40 ohms of reactance. I have tried 
> changing coils and still the problem persists.  If I do transmit this way, 
> my signal seems to be down at least 10dB below what it was when the 
> antenna resonated properly. Any ideas?
>
> --
> 73 Warren K2ORS/WD2XGJ/WD2XSH/23/WE2XEB/2
> FN42hi
> http://www.w4dex.com/wd2xgj.htm
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