[Lowfer] LF Vertical Antennas problem...

WE0H we0h at yahoo.com
Wed Jun 20 22:33:00 EDT 2007


My vertical worked like shit above 32F but worked almost as well as my 
Ashlock loops when it was below 32F. I took the vertical down and cut it 
up for scrap.

Warren, would it be possible for critters chewing through ground wires 
or something? Did the feedline get chewed up by critters? That happened 
to me once.

Bill, are you gonna get on Part 15 SSB now or sit down and pound out CW 
with the guys out East on 1750???

Mike
WE0H

Bill Ashlock wrote:
> 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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