[VHFcontesting] Yagis on masts

[Mark Spencer]

Thanks Erich for the hint re the GRA-4 poles.   The aluminum ones I have are ribbed and have round re enforcing sections at the bottom.   The are much stronger than the fiberglass camouflage netting poles.

The don't appear to have any markings or part numbers on them but I believe they were intended for supporting camouflage nets.   A local surplus store used to sell them for approx $5.00 each.

I'll have to find a source for the GRA-4 poles and see how they compare to what I have.


73
Mark S
VE7AFZ
Sent from my iPhone

> On Dec 28, 2016, at 12:12 PM, Erich <cq.n6fd at gmail.com> wrote:
> 
>> On 12/28/2016 9:42 AM, Mark Spencer wrote:
>> Currently I'm using military surplus 4 foot long and slightly under 2" OD stackable aluminum mast sections (I believe they were originally intended for supporting camouflage netting ?)
> 
> The camouflage netting poles are really lightweight and not very strong.  A better choice would be the GRA-4 poles used for putting up wire antennas in the military.  These are also in 4 foot sections, but are designed to be tilted up up to a 45' height with two sets of guys.  If you find these, the ones with a square shoulder at the joint work better than the ones with a rounded shoulder.  The rounded shoulder ones can be a bear to get apart. The square shoulder ones also rotate nicely for armstong rotor work.
> 
> 73,
> Erich N6FD
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