Patrick;
Using vertical formula of 234/7.000=33.4 feet
or 33 feet 4 & 5/8 inches. 33'4" will certainly be a good starting point
for 7.0.
Starting with 2" OD and going up the chart of smaller sizes, see the 6'
UPS shippable aluminum at www.texastowers.com A 6" overlap is adequate
for 40 meters.
Using 1" cuts gives two "slots", then again perpendicular results in two
more. A stainless hose clamp tightens this joint very nicely. If in high
wind county, use a splice to obtain 12' of 2" diamter etc. and/or pin the
joints.
73,
Jim Miller, K4SQR
http://www.comteksystems.com
4-Square Experts, Stack Yagi
& Remote Antenna Switching Systems
On Fri, 29 Jun 2001 16:43:46 -0400 "RichmondP" <richmondp@home.com>
writes:
> Hello,
>
> I am in the process of constructing a 40 meter four square and need
> advice.
> What type of aluminum or pvc should I use to construct my vetricals
> and what
> taper would the best to use. The verticals will be approximately 35
> feet
> high.
>
> Thanks,
>
> Patrick, W4PV
>
>
>
>
> List Sponsor: Are you thinking about installing a tower this summer?
> Call us
> for information on our fabulous Trylon Titan self-supporting towers
> - up to
> 96-feet for less than $2000! at 888-833-3104 <A
> HREF="http://www.ChampionRadio.com";>
> www.ChampionRadio.com</A>
>
> -----
> FAQ on WWW: http://www.contesting.com/FAQ/towertalk
> Submissions: towertalk@contesting.com
> Administrative requests: towertalk-REQUEST@contesting.com
> Problems: owner-towertalk@contesting.com
>
Jim Miller, K4SQR
http://www.comteksystems.com
4-Square Experts, Stack Yagi
& Remote Antenna Switching Systems
List Sponsor: Are you thinking about installing a tower this summer? Call us
for information on our fabulous Trylon Titan self-supporting towers - up to
96-feet for less than $2000! at 888-833-3104 <A
HREF="http://www.ChampionRadio.com";>
www.ChampionRadio.com</A>
-----
FAQ on WWW: http://www.contesting.com/FAQ/towertalk
Submissions: towertalk@contesting.com
Administrative requests: towertalk-REQUEST@contesting.com
Problems: owner-towertalk@contesting.com
|