[Harc] 2m Yagi assistance needed

[JAMES FALLS]

Your 3-el measurements would be good to compare with Dan’s. 

Thanks! Jim K6FWT 

> On Apr 7, 2021, at 16:00, JAMES FALLS <radio-tuber at att.net> wrote:
> 
> That would be great, Dan!
> Email: radio-tuber at att dot net 
> 
> 73 DE Jim K6FWT 
> 
>>> On Apr 7, 2021, at 14:44, ben adams via Harc <harc at humboldt-arc.org> wrote:
>>> 
>> 
>> Jim,
>> 
>> I have a 3 element by arrow you could get a ballpark idea with.
>> 
>> http://www.arrowantennas.com/arrowii/146-437.html
>> 
>> Now i see there is also a 4 element version the Alaskan arrow: http://www.arrowantennas.com/arrowii/alaskanarrow.html
>> 
>> The director is longest, then radiating, the director. 
>> 
>> Spaced evenly (if I remember correctly).
>> 
>> The 440 portion of the antenna is similar, but with 7 elements, also evenly spaced. The 3 directors furthest from the radiator are the same length.
>> 
>> I think the log periodic yagi's are the ones with uneven element spacing.
>> 
>> Ben
>> Kk6syj
>> 
>> 
>>> On Wed, Apr 7, 2021, 12:30 JAMES FALLS via Harc <harc at humboldt-arc.org> wrote:
>>> I am building a 4 element , 2m yagi, and online designs are all over the place. Some have elements decreasing in length back to front, some don’t. Some show a decreasing element spacing, some don’t. Which is it? 
>>> 
>>> I’m using a wood spar, and the driven element will be a 1/2 wave dipole cut for the middle of the band, directly fed by coax. I’m also going to end mount it to avoid mast interaction. 
>>> 
>>> Jim Falls K6FWT 
>>> 
>>> -- 
>>> Harc mailing list
>>> Harc at humboldt-arc.org
>>> http://mail.humboldt-arc.org/mailman/listinfo/harc_humboldt-arc.org
>> -- 
>> Harc mailing list
>> Harc at humboldt-arc.org
>> http://mail.humboldt-arc.org/mailman/listinfo/harc_humboldt-arc.org
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.humboldt-arc.org/pipermail/harc_reflector.humboldt-arc.org/attachments/20210407/e69e9c61/attachment.html>