There’s a really interesting blog post out there that is probably only a quick
Google session away. It basically made the case that PVC is a total nightmare
EVEN for just wire antennas, let alone anything requiring an az-el rotator.
In short order, the guy’s mast resembled cooked spaghetti, and then fractured
shortly after.
73, kelly, ve4xt
Sent from my iPhone
> On Oct 24, 2020, at 17:00, David Gilbert <ab7echo@gmail.com> wrote:
>
>
> PVC is a really, really bad idea. PVC can "cold flow" over time and there is
> very little chance it will hold much weight very long no matter what you do
> to support it.
>
> I agree with Jim Lux ... 4 inch irrigation tubing is lightweight and pretty
> strong, and Rain-for-Rent is a national chain that often has used stuff for
> sale. The biggest issue would be how to securely mount your rotators to it
> since the wall is pretty thin.
>
> Best bet, though, is probably a couple of narrow tower sections ... like six
> inch or eight inch cross section. Ask around and I'd bet somebody has some
> they'd be willing to part with. Or even look for somebody who had a similar
> tower for a TV antenna but no longer uses it.
>
> 73,
> Dave AB7E
>
>
>
>> On 10/24/2020 1:06 PM, Tony wrote:
>> All:
>>
>> I'm looking for a low-cost 20 foot mast that can handle a modest 2 meter EME
>> setup. The mast will be cemented in place and attached to the side of a 9
>> foot tall shed for support. I can't anchor guy wires to the ground, but I
>> can run a couple to the shed.
>>
>> The challenge is home brewing something that can handle the weight of the
>> azimuth and elevation rotors mounted at the top so the mast.
>>
>> I thought of threaded galvanized pipe sections, but they are a bit pricey.
>> Also thought of 2 inch schedule 40 PVC with some kind of internal support to
>> make it more rigid.
>>
>> Any suggestions?
>>
>> Tony
>>
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