Don't know if I'm answering Randy's question through
Tower Talk correctly but here goes -
Randy the web site below sells what I think your looking for its called
rm-2 pole/building mount, I bought one and will be putting it up this
spring. It has a rotor base bracket and a bearing sleeve bracket.
http://www.w9iix.com/
Gary
Ka7lco
-----Original Message-----
From: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com] On Behalf Of
towertalk-request@contesting.com
Sent: Monday, January 24, 2005 10:58 AM
To: towertalk@contesting.com
Subject: TowerTalk Digest, Vol 25, Issue 137
Send TowerTalk mailing list submissions to
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When replying, please edit your Subject line so it is more specific than
"Re: Contents of TowerTalk digest..."
Today's Topics:
1. RE: Installing Ground Rods (Keith Dutson)
2. Re: tower wenches (was fcc chair) (Blake Bowers)
3. Need advice on effects of trees (Jim & Velma Woods)
4. Re: tower wenches (was fcc chair) (Mirko Sibilja)
5. Utility pole beam mount (Randy Frazer)
6. Re: Shack wiring (Jim Lux)
7. Re: Utility pole beam mount (Mark - AA6DX)
8. Re: Need advice on effects of trees (Michael Tope)
9. Re: tower wenches (was fcc chair) (Bob Shauger)
----------------------------------------------------------------------
Message: 1
Date: Mon, 24 Jan 2005 11:00:25 -0600
From: "Keith Dutson" <kjdutson@earthlink.net>
Subject: RE: [TowerTalk] Installing Ground Rods
To: <TOWERTALK@contesting.com>
Message-ID: <E1Ct7ZY-0001SH-00@pop-a065c10.pas.sa.earthlink.net>
Content-Type: text/plain; charset="iso-8859-1"
Down here along the Gulf Coast just wait for a good long rain to get the
ground soaking wet. I installed fencing T-posts by hand down to 3 feet
depth without any pounding.
If you cannot wait and don't have a hose long enough to get out to the site,
make a post driver out of 2.5 foot long 3-inch pipe with 1/4 inch (or
thicker) steel plate welded to one end. Works better than slinging a sledge
hammer from up on a ladder.
Keith
-----Original Message-----
From: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com] On Behalf Of Dave NØRQ
Sent: Monday, January 24, 2005 10:20 AM
To: K8RI on Tower Talk; TOWERTALK@contesting.com
Subject: Re: [TowerTalk] Installing Ground Rods
Here in the Texas clay soils, installing a ground rod is pretty easy, if you
have water handy. Simply put the hose on trickle, lay it right where the
ground rod is to go, and start stabbing the ground with the rod--
up/down/up/down -- each time, the rod will go in farther, and the water
fills the hole. The last few feet have to be hammered, but it is very easy.
--
Dave NØRQ
----- Original Message -----
From: "K8RI on Tower Talk" <k8ri-tower@charter.net>
> It'd be an interesting experiment. Again, as virtually any other
> method,
> wet soil makes the installation easier.
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any
questions and ask for Sherman, W2FLA.
_______________________________________________
TowerTalk mailing list
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http://lists.contesting.com/mailman/listinfo/towertalk
------------------------------
Message: 2
Date: Mon, 24 Jan 2005 10:17:54 -0600
From: Blake Bowers <bbowers@townsqr.com>
Subject: Re: [TowerTalk] tower wenches (was fcc chair)
To: TowerTalk@contesting.com
Message-ID: <018501c50230$45264970$fb58060a@blake>
Content-Type: text/plain; format=flowed; charset=Windows-1252;
reply-type=original
I thought we were talking about buying a ground rod
driver, not the girl.....
> On Sunday 23 January 2005 05:18 pm, Gene Smar wrote:
>> This? http://www.groundhawgs.com/
> Thats just too ugly. When building a website don't use your
> grandmother
> to
> model the product, use your daughters or sisters, and then only if their
> hot.
> If in doubt show your friends a picture and take a survey.
>
------------------------------
Message: 3
Date: Mon, 24 Jan 2005 09:22:42 -0800
From: "Jim & Velma Woods" <woods@grantspass.com>
Subject: [TowerTalk] Need advice on effects of trees
To: <towertalk@contesting.com>
Message-ID: <003101c50239$5092da40$313e1c40@HomeComputer>
Content-Type: text/plain; charset="iso-8859-1"
I live in southern Oregon on a level 2.4 acre lot. Have quite a few trees
in the 70 to 80 foot high range. They include ponderosa and sugar pine,
white pine and Douglas firs. Am considering a tower for a yagi or quad and
as a support for wire antennas and am wondering how tall the tower would
need to be to avoid serious absorption of RF.
Soil here is full of fist-sized rocks with clay ... and dries out in the hot
summers.
Also, a few miles away is a mid-sized mountain which is east of my site. I
used a topo map to determine that the top of the mountain forms an angle
about 15 degrees above the horizon. Is this high enough to be a concern?
Thanks for your input.
Jim, W7PUP
woods@grantspass.com
------------------------------
Message: 4
Date: Sat, 8 Jan 2005 00:20:44 +0100
From: "Mirko Sibilja" <s57ad@amis.net>
Subject: Re: [TowerTalk] tower wenches (was fcc chair)
To: "Blake Bowers" <bbowers@townsqr.com>, <TowerTalk@contesting.com>
Message-ID: <004f01c4f50f$9a476020$962512d4@b8f1k4>
Content-Type: text/plain; charset="Windows-1252"
Girl not included, :-(
Mirko, S57AD
----- Original Message -----
From: "Blake Bowers" <bbowers@townsqr.com>
To: <TowerTalk@contesting.com>
Sent: Monday, January 24, 2005 5:17 PM
Subject: Re: [TowerTalk] tower wenches (was fcc chair)
> I thought we were talking about buying a ground rod
> driver, not the girl.....
>
>
>
>
> > On Sunday 23 January 2005 05:18 pm, Gene Smar wrote:
> >> This? http://www.groundhawgs.com/
> > Thats just too ugly. When building a website don't use your
> > grandmother to model the product, use your daughters or sisters, and
> > then only if their hot.
> > If in doubt show your friends a picture and take a survey.
> >
>
>
> _______________________________________________
>
> See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any
questions and ask for Sherman, W2FLA.
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
------------------------------
Message: 5
Date: Mon, 24 Jan 2005 17:49:06 -00
From: "Randy Frazer" <randyf@edge.net>
Subject: [TowerTalk] Utility pole beam mount
To: towertalk@contesting.com
Message-ID: <410-22005112417496277@edge.net>
Content-Type: text/plain; charset=US-ASCII
I have a 25 foot utility pole which I had installed when I built my house
25 years ago. I am using it to hold one end of a couple of dipoles and a
long wire antenna. I would like to use it to mount a small beam antenna.
Years ago Telerex had a utility pole hardware kit - the TMPH10, but
apparently they are out of the antenna business. Do any of the list
members know of a substitute available. I was also thinking of buying a
Glen Martin Hazer and mounting it permanently at the top with the pole
inside it; has anyone done this?
Thanks in advance for your help.
Randy - K4YYX
randyf@edge.net
------------------------------
Message: 6
Date: Mon, 24 Jan 2005 09:57:18 -0800
From: Jim Lux <jimlux@earthlink.net>
Subject: Re: [TowerTalk] Shack wiring
To: Tom Rauch <w8ji@contesting.com>, <towertalk@contesting.com>,
"Pete
Smith" <n4zr@contesting.com>
Message-ID: <6.1.1.1.2.20050124094217.026c39b0@mail.earthlink.net>
Content-Type: text/plain; charset="us-ascii"; format=flowed
At 08:06 AM 1/24/2005, Tom Rauch wrote:
> > My entire shack is on a single 110V circuit (separate 220
>for the
> > amplifier).
>
>You mean 120. The USA standard (last time I looked) was
>120/240.
That's the difference between "service voltage" and "utilization
voltage". You'll find, for instance, that there are 240V and 480V three
phase services, but you'll only be able to buy 230V or 460V three phase
motors. The difference is in the "allowance" for voltage drop in power
distribution from service entrance to point of use (2% for NEC)
>Wow. I would guess a typical HF radio might draw an amp or
>less from the mains on receive. That would mean you have an
>ESR of .2 ohms in the mains. That's pretty bad.
If you use the NEC 2% drop guideline, and assume 120V service, that's 2.4V
drop.. a 15A circuit could have 0.16 Ohms series resistance. That's not
too far from 0.2 Ohms..
Just ballparking here.. AWG14 copper (which is what most houses are wired
with) is 2.5 ohms/1000 ft. To get to 0.16 ohms, you only need 64 feet.
There's two conductors, so if you're more than 32 feet from the panel,
you've got 0.16 ohms in series (not even counting the resistance of the
connections, switches, circuit breakers, receptacle/plug combination along
the way).
Remember that the NEC (which drives most wiring requirements) is really
only concerned with burning down the house (it IS published by the National
Fire Protection Association, after all)... As long as the voltage drop
isn't all in one place, they're not too concerned with "good regulation" at
the load. Also bear in mind that the 2% is a guideline...
Good practice on load design is that it should accept 10% variation around
the nominal input voltage, just for such reasons.
Interestingly, noticeable light blink doesn't take a very big voltage
change (<0.5 volt, in my fuzzy recollection)
Jim Lux, W6RMK
------------------------------
Message: 7
Date: Mon, 24 Jan 2005 10:25:21 -0800
From: "Mark - AA6DX" <aa6dx@pacbell.net>
Subject: Re: [TowerTalk] Utility pole beam mount
To: <randyf@edge.net>, <towertalk@contesting.com>
Message-ID: <007601c50242$53436530$7362ce3f@two>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Hiya ... I've made many pole installations using 4x4 lumber .. 2 pieces
about big enough to do what you have designed. Drill 2 holes in each 4x4,
each side of the pole you are going to mount the system on. Use heavy duty
alltread, heavy duty fender washers ... clamp the pole, the supports about
3-4 feet apart ... the vertical mast will go to the side of the service
pole rather than on it. Added bonus ... again, drilling holes and using
allthread for the u-bolts, you can lay a mast across the top of the
horizontal 4x4s, and provide antenna mounts and hangers for other items. An
elbow on the end of that horizontal pipe will allow you to mount a fixed 6M
beam, for example, in the horizontal plane. A heavy metal L bracket, all
nicely pre-drilled, can provide a mount for a rotator, if one prefers to not
use a bottom mast connection to mount it. So ... you can mount several
types of antennas on this mogonicle... I've never had one break nor fall
down. Mostly, I used this on trees and poles for mounting FM Broadcast
translator antenna systems, the SCALA 10 element heavy duty ... 2 on a
crossbar, one vertical, one horizontal.
Use quality non-rusting hardware, knot-free wood, and the proper "goop" so
you can dismantle sometime in the future without having to use a hacksaw!
HIHIHI.... Those with repeater sites on mountaintops --- worky worky, if
you have trees!
This is just the basic idear, your mileage may vary, and you can improve and
modify --- share with us what you come up with! 73, Mark AA6DX
Eureka, Far Northern California
----- Original Message -----
From: "Randy Frazer" <randyf@edge.net>
Subject: [TowerTalk] Utility pole beam mount
> I have a 25 foot utility pole which I had installed when I built my house
> 25 years ago. I am using it to hold one end of a couple of dipoles and a
> long wire antenna. I would like to use it to mount a small beam antenna.
> Years ago Telerex had a utility pole hardware kit - the TMPH10, but
> apparently they are out of the antenna business. Do any of the list
> members know of a substitute available. I was also thinking of buying a
> Glen Martin Hazer and mounting it permanently at the top with the pole
> inside it; has anyone done this?
> Randy - K4YYX
------------------------------
Message: 8
Date: Mon, 24 Jan 2005 10:44:52 -0800
From: "Michael Tope" <W4EF@dellroy.com>
Subject: Re: [TowerTalk] Need advice on effects of trees
To: "Jim & Velma Woods" <woods@grantspass.com>,
<towertalk@contesting.com>
Message-ID: <189601c50244$d46026b0$6401a8c0@1800XP>
Content-Type: text/plain; charset="iso-8859-1"
----- Original Message -----
From: "Jim & Velma Woods" <woods@grantspass.com>
> I live in southern Oregon on a level 2.4 acre lot. Have quite a few trees
in the 70 to 80 foot high range. They include ponderosa and sugar pine,
white pine and Douglas firs. Am considering a tower for a yagi or quad and
as a support for wire antennas and am wondering how tall the tower would
need to be to avoid serious absorption of RF.
>
> Soil here is full of fist-sized rocks with clay ... and dries out in the
hot summers.
>
> Also, a few miles away is a mid-sized mountain which is east of my site.
I used a topo map to determine that the top of the mountain forms an angle
about 15 degrees above the horizon. Is this high enough to be a concern?
>
> Thanks for your input.
>
> Jim, W7PUP
> woods@grantspass.com
If it were me, Jim, I would be more worried about the 15 degree
mountain than absorption from the trees. While it's debatable
what effect the trees will have, the +15 degree horizon will effectively
cut off signals arriving at very low angles from that direction. If you
look at the angle of arrival statistics in terrain programs like HFTA
(HF terrain analysis), you will see that a fairly large percentage of
DX signals are arriving below +15 degrees. My experience with
the +14 degree mountain at my QTH bears this out. Anecdotally,
the effect seems to be lessened during periods of high sunspot
activity where AOA's tend to be higher due to the higher MUF.
As far as the trees go, some guys will tell you that it has a
noticeable effect, while others will swear equally vehemently
that it does nothing. I frankly don't know. The experiments needed
to make the determination are hard to do. I think professional
researchers have done some work in this area, but I am not sure
what if any conclusions they reached. My guess is that it's for the
most part a small effect. The terrain and the antenna height above
that terrain will be the dominant factor.
Good luck!
Mike, W4EF.............................................
------------------------------
Message: 9
Date: Mon, 24 Jan 2005 08:56:41 -0800
From: "Bob Shauger" <rgshauger@myyellowstone.net>
Subject: Re: [TowerTalk] tower wenches (was fcc chair)
To: "Bryan Fields" <Bryan@kb9mci.net>, "Gene Smar"
<ersmar@comcast.net>, <TowerTalk@contesting.com>
Message-ID: <002f01c50235$cb4e0f60$2b78f842@companyikphi8v>
Content-Type: text/plain; format=flowed; charset="Windows-1252";
reply-type=original
It's all in the eyes of the beholder. Looks fine to me! But I am not in my
very early twenties either. Hi Hi 73 de Bob W7KD
----- Original Message -----
From: "Bryan Fields" <Bryan@kb9mci.net>
To: "Gene Smar" <ersmar@comcast.net>; <TowerTalk@contesting.com>
Sent: Monday, January 24, 2005 1:24 AM
Subject: Re: [TowerTalk] tower wenches (was fcc chair)
> On Sunday 23 January 2005 05:18 pm, Gene Smar wrote:
>> This? http://www.groundhawgs.com/
> Thats just too ugly. When building a website don't use your grandmother
> to
> model the product, use your daughters or sisters, and then only if their
> hot.
> If in doubt show your friends a picture and take a survey.
>
> --
> Bryan Fields, KB9MCI
> ____________________
> 03:18:06 up 5:43, 4 users, load average: 0.77, 0.58, 0.45
>
> /usr/news/gotcha
>
> _______________________________________________
>
> See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
> Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with
> any questions and ask for Sherman, W2FLA.
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
------------------------------
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End of TowerTalk Digest, Vol 25, Issue 137
******************************************
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
_______________________________________________
TowerTalk mailing list
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