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To: towertalk@contesting.com
Subject: TowerTalk Digest, Vol 17, Issue 49
Date: Tue, 18 May 2004 12:01:25 -0400 (EDT)
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Today's Topics:
1. Re: Cable entrance (J.Hector Garcia M)
2. Re: Cable Length??? (J.Hector Garcia M)
3. Re: Class 2 and Class 7 Poles (Rob Frohne)
4. Re: Class 2 and Class 7 Poles (W0UN -- John Brosnahan)
5. Re: Cable Length??? (Jan Erik Holm)
6. Rohn 55 (Grillo's)
7. Re: Cable entrance (Marlon K. Schafer)
8. Re: Motorola Connectors (Marlon K. Schafer)
----------------------------------------------------------------------
Message: 1
Date: Mon, 17 May 2004 20:53:52 -0700
From: "J.Hector Garcia M" <Hector@telecom1.net>
Subject: Re: [TowerTalk] Cable entrance
To: "w7xu" <w7xu@iw.net>, "Reflector Towertalk"
<towertalk@contesting.com>
Message-ID: <007101c43c8b$bcb02e40$6402a8c0@casa>
Content-Type: text/plain; charset="iso-8859-1"
Arliss:
i know what plate with several ruber boots in the holes to provide the
weatherproof in the entrance of the cables, if you want to save some
money
, there in your local home depot, lowes or home improving warehouse you
can find in the roofing section a metal sheet with a boot similar to use
in
the pipes that provide breath to the wc pipes, there are several sizes and
will fit fine in the big hard line and other coax you have there. , take a
look and maybe this help at low price
73 de Hector XE2K
----- Original Message -----
From: "w7xu" <w7xu@iw.net>
To: "Reflector Towertalk" <towertalk@contesting.com>
Sent: Monday, May 17, 2004 7:58 PM
Subject: [TowerTalk] Cable entrance
> Any suggestions on routing Heliax through an outside wall? I'm
> putting up a building that will be the new home for my radio station
> and will need to bring about 10 runs of Heliax (7/8" to 1-5/8") and
> a few runs of regular coax through the wall. In the past I've put a
> few runs of Heliax through a section of large diameter PVC that passed
> through the wall, but I'd like something better this time around.
>
> If I run the cables through a metal bulkhead, how do I make the
> installation waterproof? (I've heard of "boots" made for weather-
> proofing commercial installations but I've never seen them available
> surplus).
>
> Thanks & 73,
>
> Arliss W7XU
> _______________________________________________
>
> 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: 2
Date: Mon, 17 May 2004 20:56:01 -0700
From: "J.Hector Garcia M" <Hector@telecom1.net>
Subject: Re: [TowerTalk] Cable Length???
To: <towertalk@contesting.com>, <k2qmf@juno.com>
Message-ID: <007d01c43c8c$096c5880$6402a8c0@casa>
Content-Type: text/plain; charset="iso-8859-1"
The ruler will work , but if you use a mfj 259 also works , just get the
50ohms at the freq you want.., the use of new cable is the best, the
older
have some changes .
good luck.
----- Original Message -----
From: <k2qmf@juno.com>
To: <towertalk@contesting.com>
Sent: Monday, May 17, 2004 2:24 PM
Subject: [TowerTalk] Cable Length???
>
> Hello All,
>
> I am planning a 2 stack for 20 meters.
> Is there an easy way to measure the lengths
> of coax cable in order to get them the exact
> same length???
>
> Thanks in advance for any suggestions.
>
> 73, Ted K2QMF
>
> ________________________________________________________________
> The best thing to hit the Internet in years - Juno SpeedBand!
> Surf the Web up to FIVE TIMES FASTER!
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> _______________________________________________
>
> 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: 3
Date: Mon, 17 May 2004 21:42:07 -0700
From: Rob Frohne <frohro@wwc.edu>
Subject: Re: [TowerTalk] Class 2 and Class 7 Poles
To: towertalk@contesting.com
Message-ID: <B7DBE0B6-A885-11D8-8684-0005028798F2@wwc.edu>
Content-Type: text/plain; charset=US-ASCII; format=flowed
Hi All,
Interesting topic. A few years ago, I tried to obtain a 120' phone
pole new, and all the guys I talked to said it had been years since
they had seen one even close to that size. One of my mentors when I
was young, was Gale Alred, (KL7BJW, KL7JW, KL7G) who had a 117 foot
phone pole with a railroad track up the side. He had a cart that went
up and down the track, and could lower the whole thing from his shack
whenever a big wind blew (and we got them with winds over 100 mph). He
had antennas as big six element 20 meter quagi on an 80 foot boom that
his prop pitch turned on that thing and year after year never had any
trouble with it at all.
73,
Rob, KL7NA/W7
On May 17, 2004, at 4:34 PM, Alan AB2OS wrote:
> Everyone who responded has given me a lot to think about. I had not
> thought at all about the task of climbing the thing, and I can see
> that a coventional tower would be much simpler in that respect.
>
> The tower I have in mind would be a free-standing AN wireless unit,
> which could be erected section by section using a gin pole. The only
> way to set up a utility pole (or to assemble the tower on the ground
> and pick it up) would be to get a crane with a jib long enough to
> reach over the roof of the house: there just isn't room to get around
> either end of the house without intruding into a neighbor's property.
>
> I think I'll stick with the tower.
>
> BTW, they used steel-and-concrete utility poles (called "Stobie
> poles") in Adelaide, South Australia when I lived there 40 yrs ago.
>
> Alan AB2OS
>
>
> On 05/17/04 06:50 pm Doug Faunt N6TQS +1-510-655-8604 put fingers to
> keyboard and launched the following message into cyberspace:
>
--
Rob Frohne, Ph.D., P.E.
E.F. Cross School of Engineering
Walla Walla College
http://www.wwc.edu/~frohro/
------------------------------
Message: 4
Date: Tue, 18 May 2004 00:08:31 -0500
From: W0UN -- John Brosnahan <shr@swtexas.net>
Subject: Re: [TowerTalk] Class 2 and Class 7 Poles
To: towertalk@contesting.com
Message-ID: <5.2.1.1.2.20040517235955.02c0e0b8@pop3.swtexas.net>
Content-Type: text/plain; charset="us-ascii"
>Interesting topic. A few years ago, I tried to obtain a 120' phone pole
>new, and all the guys I talked to said it had been years since they had
>seen one even close to that size.
I have four of the 120 ft poles. They were used by the government for
an ionospheric sounder project I built for them about 20+ years ago.
When the project was over I hauled them home, but never used them.
I think they are still in pretty good shape (they are "black jacks"--
fully treated with creosote but have been stored horizontally. They
are Class 1 western red cedar. Matched and hauled in to CO from
OR--don't recall the exact date but in the early 1980s
No way I can haul them to TX from CO so I MAY be looking for
a good home for them. But they are a real BEAR to move unless you
have the equipment and the permits to take them on the hiway.
They are at my place in northern CO, near Greeley. Will have to
do something with them by this fall. I also have a bunch of 65 ft ones
(23 are on the ground--2 are up) from the same deal and will have
to make some decisions. I guess I could put them on the railroad
but they would end up a LOT of miles from my place in TX and
this "soil" is mostly LIMESTONE.
Both the 120s and the 65s are fully stepped. Worse comes to worse
I will pull off the hardware and walk away from my investment of
moving them 30 miles to my house around 1990.
--John W0UN
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------------------------------
Message: 5
Date: Tue, 18 May 2004 07:16:02 +0200
From: Jan Erik Holm <sm2ekm@telia.com>
Subject: Re: [TowerTalk] Cable Length???
To: towertalk@contesting.com
Message-ID: <40A99C12.4080707@telia.com>
Content-Type: text/plain; charset=us-ascii; format=flowed
This is correct however you can also use a signal generator
(or even your TX) and a voltmeter with an RF probe.
73 Jim SM2EKM
-------------------------------------------------------------------
Chuck O'Neal wrote:
> At 20M, getting them within a foot of each other will be
> fine and with a tape measure you can get within an inch or
> two. If you are really anal, like I can be sometimes, then
> you can use a TDR to make sure that they are the same
> electrical length which is really what you want. If they
> are off the same reel of cable, physical length will be
> close enough in my experience. There are many other sources
> of error in stacking that will diminish the effect of
> feedline length.
>
> Chuck...K1KW
>
> ----- Original Message -----
> From: <k2qmf@juno.com>
> To: <towertalk@contesting.com>
> Sent: Monday, May 17, 2004 5:24 PM
> Subject: [TowerTalk] Cable Length???
>
>
>
>>Hello All,
>>
>>I am planning a 2 stack for 20 meters.
>>Is there an easy way to measure the lengths
>>of coax cable in order to get them the exact
>>same length???
>>
>>Thanks in advance for any suggestions.
>>
>>73, Ted K2QMF
------------------------------
Message: 6
Date: Tue, 18 May 2004 04:59:09 -0600
From: "Grillo's" <ah3c@frii.com>
Subject: [TowerTalk] Rohn 55
To: "Towertalk Reflector" <towertalk@contesting.com>
Message-ID: <003801c43cc7$260692e0$2bc420cc@yourb79wz4rose>
Content-Type: text/plain; charset="iso-8859-1"
I am going 120' with Rohn 55. I've lost the drawing from the Rohn book.
Can anyone send me PDF or JPG file for this detail so I can get engineer
sign off on it?
------------------------------
Message: 7
Date: Tue, 18 May 2004 08:49:42 -0700
From: "Marlon K. Schafer" <ooe@odessaoffice.com>
Subject: Re: [TowerTalk] Cable entrance
To: "w7xu" <w7xu@iw.net>, towertalk@contesting.com
Message-ID: <00c501c43cef$bcb44e80$04e49240@hjgfdf>
Content-Type: text/plain; charset="iso-8859-1"
www.ecommwireless.com
Download the broadband cat.
Page 39 should have just what you are looking for.
laters,
marlon
----- Original Message -----
From: "w7xu" <w7xu@iw.net>
To: "Reflector Towertalk" <towertalk@contesting.com>
Sent: Monday, May 17, 2004 7:58 PM
Subject: [TowerTalk] Cable entrance
> Any suggestions on routing Heliax through an outside wall? I'm
> putting up a building that will be the new home for my radio station
> and will need to bring about 10 runs of Heliax (7/8" to 1-5/8") and
> a few runs of regular coax through the wall. In the past I've put a
> few runs of Heliax through a section of large diameter PVC that passed
> through the wall, but I'd like something better this time around.
>
> If I run the cables through a metal bulkhead, how do I make the
> installation waterproof? (I've heard of "boots" made for weather-
> proofing commercial installations but I've never seen them available
> surplus).
>
> Thanks & 73,
>
> Arliss W7XU
> _______________________________________________
>
> 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.
------------------------------
Message: 8
Date: Tue, 18 May 2004 09:00:12 -0700
From: "Marlon K. Schafer" <ooe@odessaoffice.com>
Subject: Re: [TowerTalk] Motorola Connectors
To: "Michael Tope" <W4EF@dellroy.com>
Cc: towertalk@contesting.com
Message-ID: <012601c43cf1$33b06680$04e49240@hjgfdf>
Content-Type: text/plain; charset="iso-8859-1"
Hiya,
Tessco likely has them.
Also, I get most of my gear (for my wisp) from www.electro-comm.com. They
are a high level Motorola dealer.
laters,
marlon
----- Original Message -----
From: "Michael Tope" <W4EF@dellroy.com>
To: "TowerTalk" <towertalk@contesting.com>
Sent: Friday, May 14, 2004 9:42 AM
Subject: [TowerTalk] Motorola Connectors
> Sorry this a slightly little off topic (but not nearly as much as
ISO9001
> compliance). Anyone know where I can get right-angle motorola
> connectors (e.g. the standard male car radio connector). Specifically
> I need something that will change a long straight Motorola male
> plug into a right-angle that makes a nice sharp turn (there isn't
> much room between the firewall of my Ford pickup and the back
> of the radio. A short jumper cable with a Motorola female jack on
> one end and a Motorola right angle male on the other end would
> do nicely. I recently got an antenna switch (see its sorta appropriate
> for TowerTalk) that goes between my car radio and the factory
> antenna , and the switch uses a long straight male plug which won't
> clear the firewall.
>
> Thanks,
>
> Mike, W4EF............................
>
>
>
> _______________________________________________
>
> 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 17, Issue 49
*****************************************