[TowerTalk] How much can an AB-577 carry?

[AB2E Darrell]

Pete,
For FD 3rd time we will have a 2el homebrew trapless 20m mono yagi at 50ft,
 and a 3el hygain 15m Longjohn trapless mono yagi at 35ft. Also at 50ft a half wave dipole for 80m.
The issue of QST featuring FD had a nice pic of our AB-577 set up last year.
Anyway, no problems with that setup so far for us.
I think the key is will it be used for a weekend or are you talking about a home setup where it will be left up year round.
I have 2 AB-577s and I'm going to put one up for contest season. I will only put a C3SS on top of that for that application.

Another consideration, what is the condition of the parts of the AB-577? These were made in the late 60s. A typical fail point in wind are the clamps that connect the mast sections together. You only need one to let go, and that mast/tower is coming down. I was fortunate to find a double replacement set from Ontario Surplus a couple years ago.
Hope this helps,
73 Darrell AB2E


________________________________
From: TowerTalk <towertalk-bounces at contesting.com> on behalf of Pete Smith N4ZR <pete.n4zr at gmail.com>
Sent: Wednesday, June 22, 2022 4:27 PM
To: towertalk at contesting.com <towertalk at contesting.com>
Subject: Re: [TowerTalk] How much can an AB-577 carry?

Crimey, and this is an engineer who did computational structural
analyses of the masts on America's Cup boats.  I think what this is
probably telling me is that I can safely put a small 6M yagi on top of
my C-3, so long as I'm attentive to guy tightness.

73, Pete N4ZR
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On 6/22/2022 3:05 PM, Joe Subich, W4TV wrote:
>
>
>
>> I am thinking about a little more antenna, and wonder what other
>> people have used successfully on this tower. By successful, I'm
>> thinking of relatively long-term longevity, wind survival, etc.
> K7NV has a TH7 on one AB-577 and a 402CD on another:
> <https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fk7nv.com%2Fid3.htm&data=05%7C01%7C%7Ca68de5144ff4485c7a8308da5491a8d8%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637915281852566927%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=rRK013kKTAV8MmFi251gC721Y22HG2U6Vv9f2Z6Zs8M%3D&reserved=0>
>
> 73,
>
>    ... Joe, W4TV
>
>
> On 2022-06-22 2:42 PM, Pete Smith N4ZR wrote:
>> I have a C-3E in an AB-577 rocket launcher, which Force 12 rated at
>> 5.9 square feet of wind load. I am thinking about a little more
>> antenna, and wonder what other people have used successfully on this
>> tower. By successful, I'm thinking of relatively long-term longevity,
>> wind survival, etc.
>>
>> I've heard anecdotes from a lot of people, but want to look at wind
>> loading from various antennas/combinations.
>>
>> 73, Pete N4ZR
>> Check out the new Reverse Beacon Network
>> web server at<https://nam12.safelinks.protection.outlook.com/?url=http%3A%2F%2Fbeta.reversebeacon.net%2F&data=05%7C01%7C%7Ca68de5144ff4485c7a8308da5491a8d8%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637915281852566927%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=4os6F5Rt0UlXx6P7zaseJ1%2F7TOC0gwvKyy9PJ7ximD8%3D&reserved=0>.
>> For spots, please use your favorite
>> "retail" DX cluster.
>
>
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