Topband: experimenting with inverted L

[Joshua M. Arritt]

If there's no change in VSWR when disconnecting the ground system, that 
would make me terribly suspicious of the feedline if Eu was my 
unobtained goal after some time on Topband.

73,
    - Josh / KF4YLM



On 11/30/2011 3:48 PM, DAVID CUTHBERT wrote:
> The radiation resistance of your antenna is 12 ohms.
>
> The 1.5:1 VSWR tells us the base resistance is either 33 or 75 ohms. The
> ground loss resistance is either 21 or 63 ohms. The radiation efficiency is
> either 36 or 16 percent.
>
> The low VSWR over the band (1.8 to 2 MHz?) points to the base resistance
> being 75 ohms.
>
> Dave WX7G
> On Nov 30, 2011 1:28 PM, "james soto"<kp2bh at yahoo.com>  wrote:
>
>> Hello friends,I am experimenting with an inverted L for 160. the antenna
>> is about 132 ft long with about 45 to 50 ft vertical and the rest
>> horizontal.i have about 4 radials connected direct to the antenna and one
>> wire connecting to other radials that use to belong to another vertical
>> antenna not in use now. at this time i have work south ,central and north
>> america but i have not work any europeans as yet. the wsr is pretty ok 1.5
>> across the band . i disconnect the ground from the antenna and i don see
>> any difference in swr at all. my question is do leaving the ground wire
>> disconnected from the ground rod improve the reception? any ideas are
>> wellcome.
>>
>> ps i also have a 1/2 wave dipole for 160 at 60 ft high and running in all
>> kind of shapes ( no space for long antennas) and my reception is better
>> with the inverted L.
>>
>> thanks and 73's
>>
>> de kp2bh   /   kp2dx  jimmy
>> _______________________________________________
>> UR RST IS ... ... ..9 QSB QSB - hw? BK
>>
> _______________________________________________
> UR RST IS ... ... ..9 QSB QSB - hw? BK
>