[TowerTalk] Turn 80m dipole inv v into something for 30m

[W0MU Mike Fatchett]

I was trying to avoid climbing.  I have a SteppIR with the 30/40 so this 
would be an extra antenna for the 2nd radio.

I tried researching a 1.5 wavelength dipole antenna on the internet but 
didn't find too much.


On 10/28/2017 12:19 PM, Joe Subich, W4TV wrote:
>
> On 10/28/2017 1:37 PM, Doug Smith wrote:
> > Maybe an 80 / 30 M. fan dipole?
>
> Doesn't work - at least for me.
>
> The 80 meter element is too short but close enough to being resonant on
> 30 meters that I was never able to tune the 30 meter element so that it
> yielded a low SWR (showed resonance) anywhere near the 30 meter band.
>
>> On Oct 28, 2017, at 10:13 AM, W0MU Mike Fatchett <w0mu at w0mu.com>
>> wrote:
> >>
>>> I have an 80 inverted V that I would like to transform to something
>>> useful for 30m.
>
> Mike, if you need 80 and 30 meters on the same feedline, get a set of
> Reyco KW30 traps and make an 80/30 meter trap dipole.  If you don't need
> 80 meters (the 80 meter inverted V is surplus) cut it down to a proper
> 30 meter single band antenna.
>
> 73,
>
>    ... Joe, W4TV
>
>
> On 10/28/2017 1:37 PM, Doug Smith wrote:
>> Maybe an 80 / 30 M. fan dipole?  IOW, add a 30 meter Inverted-V to 
>> the 80 M. Inverted-V...
>>
>> 73,
>> Doug
>> http://www.w7kf.com
>>
>>
>>> On Oct 28, 2017, at 10:13 AM, W0MU Mike Fatchett <w0mu at w0mu.com> wrote:
>>>
>>> I have an 80 inverted V that I would like to transform to something 
>>> useful for 30m.
>>>
>>> It is fed with RG213 and a balun at the feedpoint.
>>>
>>> It is close to 3/4 wavelengths on each side which might be ok but 
>>> the match is going to be bad.
>>>
>>> It might just be easier to toss up an 1/2 wave V and not worry about 
>>> the 80m.
>>>
>>> Suggestions or comments welcome!
>>>
>>> W0MU
>>>
>>
>> _______________________________________________
>>
>>
>>
>> _______________________________________________
>> TowerTalk mailing list
>> TowerTalk at contesting.com
>> http://lists.contesting.com/mailman/listinfo/towertalk
>>
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk