So, Mirko brings up an interesting point. I can run out far more than 35'
horizontally. Should I make the wire a lot longer in that dimension? I was
working with the 130' (approx) total length I'd read about using for the
43' vertical's top loading wire. I know, I should be modeling this myself.
:-(
But if adding extra wire in the horizontal might help then that would be an
easy modification.
Any opinions?
Thanks,
Todd - NR7RR
On Tue, Dec 18, 2018 at 11:22 AM S57AD <mirko.s57ad@gmail.com> wrote:
> Hello Todd,
>
> my experiences were pretty limited, but I would suggest you about 150' of
> wire (to 100' height, the rest horizontally), with air variable capacitor
> in series with the wire to cancel inductive reactance. Some 500 - 800 pF
> would be OK, It will tune antenna nicely without any need for external
> tuners and such a stuff. Beware that inverted L is noisy antenna and you
> will need receiving one (ones). And do not expect huge EU pile-ups with
> your 100W, HI
>
> 73, Mirko, S57AD
>
> V V pon., 17. dec. 2018 ob 21:55 je oseba Todd Goins <tgoins@gmail.com>
> napisala:
>
>> Hello,
>>
>> Yes, I'm a 160m newbie but have been licensed and active since 1990. I
>> have
>> CW/Phone experience on HF but I'm just getting my feet wet on 160m. I
>> participated in the ARRL 160 CW contest and had a great time. I will also
>> be particiapating in the Stew and the CQ contests in January. I'd like
>> some opinions or thoughs on making my modest antenna a little better. I
>> have worked and confirmed 40 states in a couple of weeks on CW and FT-8
>> but
>> the DX (both hearing and transmitting to by PSK Reporter stats) has been
>> elusive.
>>
>> So, here's my setup. I made an inverted L using a DX Engineering 43'
>> vertical and I attached a 90' horizontal wire (that slopes up a little) to
>> the top. I have a radial field of 60-70 radials with varying lengths from
>> 125' to around 40' with the overall average being about 60' in length. I
>> have a remote tuner at the base of the vertical. Also, I'm only running
>> 100
>> watts, so that may be an issue. Furthest I've completed and confirmed a
>> QSO
>> is South Africa but nothing to Europe. I am in the Seattle, WA area.
>> Overall, I guess I'm happy it works at all but I'm ready for some ideas on
>> improvement.
>>
>> My situation/question is this: I could, with minimal effort, attach a
>> vertical wire to a tree limb at about 100' height right over the existing
>> radial field. That would then replace the DX Engineering vertical and I
>> would run a horizontal capacitance hat wire from the top of the 100' tall
>> wire. My plan would be to use the existing radial field, disconnect the
>> current vertical and connect the new wire to the tuner/radial field
>> instead.
>>
>> Would you wise and experienced Topbanders expect any performance increase
>> from the increased vertical length or should I just stick with what I
>> have
>> now? Also, if I do this, what length of wire would be recommended for the
>> top horizontal section?
>>
>> Any ideas or thoughts would be great. Be gentle...
>>
>> 73,
>> Todd - NR7RR
>> _________________
>> Searchable Archives: http://www.contesting.com/_topband - Topband
>> Reflector
>>
>
>
> --
> Mirko S57AD
>
_________________
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
|