Be careful with ANY pully if wire jumps the wheel then it will bind
between the wheel and the body of the pully. Large insulator does not
have this problem.
Don't Ask!!
Thanks
Bill
-----Original Message-----
From: TowerTalk <towertalk-bounces@contesting.com> On Behalf Of
towertalk-request@contesting.com
Sent: Wednesday, May 1, 2019 11:00 AM
To: towertalk@contesting.com
Subject: TowerTalk Digest, Vol 197, Issue 1
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Today's Topics:
1. Re: 4.3-10 Connector for RG8 (john@kk9a.com)
2. Question altering concrete base dimensions Hygain HG-52SS
(AB2E Darrell)
3. Re: Pulley at the top corner of an inverted L (Grant Saviers)
4. Pulley for corner of Inverted L (N4ZR)
5. Re: Pulley for corner of Inverted L (K9MA)
----------------------------------------------------------------------
Message: 1
Date: Tue, 30 Apr 2019 19:36:16 -0500
From: john@kk9a.com
To: towertalk@contesting.com
Subject: Re: [TowerTalk] 4.3-10 Connector for RG8
Message-ID:
<20190430193616.Horde.Zb8cTX4as_hqRzkLRsTGscZ@www11.qth.com>
Content-Type: text/plain; charset=utf-8; format=flowed; DelSp=Yes
I believe that it is two words, jack field.
https://en.wikipedia.org/wiki/Patch_panel
John KK9A
k7lxc wrote:
> As far as *jumpers*, which are 1/2" and smaller, connector choice is
> driven by jackfield density.
Okay, I'll bite. What's a jackfield besides a village in England?
Enquiring minds want to know.
Cheers,Steve K7LXC
------------------------------
Message: 2
Date: Wed, 1 May 2019 00:48:41 +0000
From: AB2E Darrell <ab2e@hotmail.com>
To: 'towertalk' <towertalk@contesting.com>
Subject: [TowerTalk] Question altering concrete base dimensions Hygain
HG-52SS
Message-ID:
<YTBPR01MB3567F8593AF800DAB46283129B3B0@YTBPR01MB3567.CANPRD01.PROD.OUTL
OOK.COM>
Content-Type: text/plain; charset="iso-8859-1"
Greetings All,
I have a question for the gurus, could not find any specific info on
this.
The specs in the manual for the Hygain HG-52SS crankup self-supporting
tower are 3.5x.3.5x5.5 ft for the concrete in the base.
This is approx 67 cu ft, or roughly 2.5 yards of cement. My water table
is high, somewhere around 4ft in places I have done a sample dig.
So long as I keep the same or greater volume of cement, is it OK to
modify the dimensions of the base some?
I'm thinking 4X4X4.5ft, this would be 72 cu ft, or almost 2.7 cu yd. I
could also easily make it 5x5x4 ft which would be 3.7 cu yd.
So I would be expanding length and width by 6 inches each, and taking
1ft off of the depth of the first scenario, and expanding 1.5ft length
and width, and shortening 1.5ft depth on the 2nd scenario.
Any thoughts on this?
73 Darrell AB2E
------------------------------
Message: 3
Date: Tue, 30 Apr 2019 18:32:55 -0700
From: Grant Saviers <grants2@pacbell.net>
To: TowerTalk <TowerTalk@contesting.com>
Subject: Re: [TowerTalk] Pulley at the top corner of an inverted L
Message-ID: <2d153b24-b7d0-ee67-c120-48b30770e093@pacbell.net>
Content-Type: text/plain; charset=utf-8; format=flowed
For "non-conductive marine" you might look for plastic sheaves in carbon
fiber flanges, but I don't think that the little bump of a conductive
block would make much difference if attached to an insulated hoist line.
What will make a difference to the wire fatigue life is a larger
diameter sheave, so I would recommend something closer to 2" diameter.
Any sheave will be better than an insulator.
Grant KZ1W
On 4/30/2019 14:10 PM, CHARLES ALLEN via TowerTalk wrote:
> Go to a West Marine store and get non-conductive pulleys. Sailers
have used them for years. They???re perfect for what you???re asking
about. I???ve used them successfully for years for insulated wire
antennas.
>
> 73 de Chick, NW3Y
>
> Sent from my iPad
>
>> On Apr 30, 2019, at 3:17 PM, N4ZR <n4zr@comcast.net> wrote:
>>
>> 73, Pete N4ZR
>> Check out the Reverse Beacon Network
>> at <http://reversebeacon.net>, now
>> spotting RTTY activity worldwide.
>> For spots, please use your favorite
>> "retail" DX cluster.
>>
>> I've just got a rope up 60 feet or so in a maple tree, and I'm ready
to string an inverted L.
>>
>> My question - I have several stainless steel pulleys with about a 1"
sheave. If I insulate the pulley from the haul-up rope, is it a
good/bad/indifferent idea to string the inverted L wire (14 copper,
stranded) through the pulley rather than just using an insulator to make
the bend. It strikes me that having the bend move, however slightly, on
the wire is likely to be less destructive than just having a sharp bend
moving through an insulator end..
>>
>> Comments?
>>
>> _______________________________________________
>>
>>
>>
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>
> _______________________________________________
>
>
>
> _______________________________________________
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>
------------------------------
Message: 4
Date: Wed, 1 May 2019 08:17:26 -0400
From: N4ZR <n4zr@comcast.net>
To: TowerTalk <TowerTalk@contesting.com>
Subject: [TowerTalk] Pulley for corner of Inverted L
Message-ID: <28853d10-ca44-89d9-19f2-1002febfdd9b@comcast.net>
Content-Type: text/plain; charset=utf-8; format=flowed
Thanks to everyone who responded to my query.? After digesting your
comments, I went online and discovered some pulleys that may be
appropriate to the job - <https://www.boatersland.com/scp28501.html>.
The sheaves are "plastic", and the low price has me a bit skeptical, but
I'll keep an eye on it.? You can pay literally hundreds of dollars for
similarly-sized marine pulleys with carbon-fiber sheaves
--
73, Pete N4ZR
Check out the Reverse Beacon Network
at <http://reversebeacon.net>, now
spotting RTTY activity worldwide.
For spots, please use your favorite
"retail" DX cluster.
------------------------------
Message: 5
Date: Wed, 1 May 2019 07:31:44 -0500
From: K9MA <k9ma@sdellington.us>
To: towertalk@contesting.com
Subject: Re: [TowerTalk] Pulley for corner of Inverted L
Message-ID: <808bcae0-5960-a340-f757-f856fb4b157d@sdellington.us>
Content-Type: text/plain; charset=utf-8; format=flowed
Just be sure the wire can slip off the sheave and get jammed in the gap.
Another possibility: Solder little loops of wire onto the antenna a few
feet on either side of the pulley and tie a piece of rope between them,
leaving a little slack so the wire can hang below the pulley. The rope
goes through the pulley, not the wire.
73,
Scott K9MA
On 5/1/2019 07:17, N4ZR wrote:
> Thanks to everyone who responded to my query.? After digesting your
> comments, I went online and discovered some pulleys that may be
> appropriate to the job - <https://www.boatersland.com/scp28501.html>.
> The sheaves are "plastic", and the low price has me a bit skeptical,
> but I'll keep an eye on it.? You can pay literally hundreds of dollars
> for similarly-sized marine pulleys with carbon-fiber sheaves
>
--
Scott K9MA
k9ma@sdellington.us
------------------------------
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