[TowerTalk] Heathkit SA-7010/Hy-Gain TH-4

[David Gilbert]

Hard to say about the wind load, but you should be able to calculate it 
using online formulas if you measure the elements.

Not sure I'd believe the manual, though ... it claims 8.4 db gain over a 
DIPOLE, and I'm pretty certain that's a lie.

Dave   AB7E


On 7/5/2019 5:11 PM, John Kemker wrote:
> Anybody have any ideas?
>
> If you reply, please do so on the list, not in a private email.  I'd like
> to tap into the collective wisdom of the group, not just one person's
> opinion.
>
> --73 de W5NNH
>
> On Mon, Jul 1, 2019 at 6:01 PM John Kemker <kemkerj3 at gmail.com> wrote:
>
>> I've purchased a used Heathkit SA-7010 from another ham and am in the
>> process of restoring it to usable condition.  MFJ's Tech Support told me
>> that it's basically a TH-4 from Hy-Gain, marketed by Heath back in the day.
>>
>> Anybody got any idea if the 5.8 sq. ft. "Surface Area" listed in the
>> Heathkit manual is a good number to use for wind load?  I'd like to figure
>> out if the CD45 that I've got will be sturdy enough to turn this antenna.
>>
>> --73 de W5NNH
>>
>> --
>> --John E Kemker III
>>
>