[TowerTalk] LMR-600 cable bends in conduit

K8RI on TowerTalk K8RI-on-TowerTalk at tm.net
Mon Nov 27 01:48:20 EST 2006




> Do you see any problem with 2" conduit using wide 90's (total: 2)?
>

Sweep 90's should work. Standard 90's are pushing the minimum radius bends 
and I'd think would be a bear to pull through. I'm going through three 45's 
and one sweep 90 although I don't have all the runs in yet. There will be 
three LMR 600, one small heliax (which may or may not work which might have 
to be replaced with LMR-600) two LMR 400's (one to the remote switch, and 
one to the tri-bander), rotator cable, control cable to remote switch, and 
three RG-6.

I'm afraid I'm going to need to replace the junction box on the side of the 
house with a larger one.  This is a Hoffman box (NEMA-4) with an aluminum 
backing plate for grounding and mounting the polyphasers.

Roger Halstead (K8RI and ARRL 40 year Life Member)
N833R - World's oldest Debonair CD-2
www.rogerhalstead.com



> Allen Ross Brier, N5XZ SET
> BriTech Systems Incorporated
> NICET Fire Alarm Level IV
> NICET Sp. Hazards / Sprinkler Systems Level I
> 1515 Windloch Lane
> Richmond, Texas 77469-2553
> (281) 342-1590
> (281) 342-0940 (FAX)
> (713) 705-4801 (Cell)
> -----Original Message-----
> From: C Dwight Baker [mailto:cdwightbaker at bellsouth.net]
> Sent: Sunday, November 26, 2006 10:02 PM
> To: towertalk at contesting.com
> Subject: Re: [TowerTalk] TowerTalk Digest, Vol 47, Issue 95
>
> I forgot to answer one part of your question with respect to the ability 
> to
> bend the LMR 600.  Yes, you can bend the cable in the 4 inch PVC 45 
> degrees
> with no problem.  I ran two runs of the 600 cable through the same 3 inch
> PVC and made three 90 degree turns with no problems.
>
> Dwight  W4IJY  Vero Beach, FL
>
> -----Original Message-----
> From: towertalk-bounces at contesting.com
> [mailto:towertalk-bounces at contesting.com] On Behalf Of
> towertalk-request at contesting.com
> Sent: Sunday, November 26, 2006 9:04 PM
> To: towertalk at contesting.com
> Subject: TowerTalk Digest, Vol 47, Issue 95
>
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> Today's Topics:
>
>   1. Re: HF Vertical Opinions NEEDED... (Gedas)
>   2. Re: HF Vertical Opinions NEEDED... (Mike Fatchett)
>   3. Re: HF Vertical Opinions NEEDED... (Bob Nielsen)
>   4. Grounding the rotor cable (Cqtestk4xs at aol.com)
>   5. Needed: Andrews LDF4-50A Coax (Dr M J DiGirolamo)
>   6. LMR600 (Jim McDonald)
>   7. Re: Grounding the rotor cable (K8RI on TowerTalk)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sun, 26 Nov 2006 19:39:12 -0500
> From: "Gedas" <w8bya at mchsi.com>
> Subject: Re: [TowerTalk] HF Vertical Opinions NEEDED...
> To: "'TowerTalk'" <towertalk at contesting.com>
> Message-ID: <038301c711bc$761dd960$0401a8c0 at Gedas>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Mike, any idea on how your R8 performs vs. another vertical, say a ground
> mounted type with radials?  I think that would be very interesting.
>
> Gedas
> Image Gallery http://gedas.cc
> Web Site        http://w8bya.com
>
> ----- Original Message ----- 
> From: Mike Fatchett
> To: 'TowerTalk'
> Sent: Sunday, November 26, 2006 7:18 PM
> Subject: Re: [TowerTalk] HF Vertical Opinions NEEDED...
>
>
> I have a couple of R8 Verticals that are elevated and they work pretty 
> well.
> The do not require any radials.  Most other verticals will require 
> radials.
> Even the BigIR requires radials.
>
> Mike W0MU
>
> -----Original Message-----
> From: towertalk-bounces at contesting.com
> [mailto:towertalk-bounces at contesting.com] On Behalf Of D. Scott MacKenzie
> Sent: Sunday, November 26, 2006 5:16 PM
> To: Peter Voelpel; towertalk at contesting.com
> Subject: Re: [TowerTalk] HF Vertical Opinions NEEDED...
>
> Actually - the report that K7LXC did, is a good, well written report, with
> good experimental data to back up the claims.  It certainly helped me make
> an informed decision based on DATA as opposed to opinions.....
>
> Opinions are like a A...holes - everyone has them.  But data is worth the
> price.....
>
> Scott
>
> -----Original Message-----
> From: towertalk-bounces at contesting.com
> [mailto:towertalk-bounces at contesting.com]On Behalf Of Peter Voelpel
> Sent: Sunday, November 26, 2006 4:11 PM
> To: towertalk at contesting.com
> Subject: Re: [TowerTalk] HF Vertical Opinions NEEDED...
>
>
> I wonder whether you like to give helpful advise or make profit...
>
> 73
> Peter
>
> -----Original Message-----
> From: towertalk-bounces at contesting.com
> [mailto:towertalk-bounces at contesting.com] On Behalf Of K7LXC at aol.com
>
> In a message dated 11/26/2006 11:30:40 A.M. Pacific Standard Time,
> towertalk-request at contesting.com writes:
>
>>  I am going to be relocating to a new QTH and was looking at  getting
>> a  new
> multiband vertical.  I would like to have  something that would be for 
> 40 -
> 15 meters.   I know there are  lots of options out there, but just not 
> sure
> which ones are really worth  the money.  I have been steering more 
> thowards
> the Hy-Gain.  Any  help or opinions would greatly be appreciated.
>
>
>        While we didn't test the  SteppIR, there are a bunch of other
> verticals that we tested in our vertical  antenna comparison report
> available at _www.championradio.com/publications.html_
> (http://www.championradio.com/publications.html) .
>
>
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
> _______________________________________________
>
>
>
> _______________________________________________
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> http://lists.contesting.com/mailman/listinfo/towertalk
>
> ------------------------------
>
> Message: 2
> Date: Sun, 26 Nov 2006 17:47:29 -0700
> From: "Mike Fatchett" <mike at mallardcove.com>
> Subject: Re: [TowerTalk] HF Vertical Opinions NEEDED...
> To: "'Gedas'" <w8bya at mchsi.com>, "'TowerTalk'"
> <towertalk at contesting.com>
> Message-ID: <20061127004747.70C2C31A00D at dayton.contesting.com>
> Content-Type: text/plain; charset="us-ascii"
>
> I don't have any other verticals to compare it to.  I don't know if the
> publication K7LXC was citing includes the R8.  I worked plenty of DX with 
> it
> this weekend but I don't have anything to comapare it to.  I am surprised 
> by
> what I can work at times though.
>
> Mike W0MU
>
> -----Original Message-----
> From: towertalk-bounces at contesting.com
> [mailto:towertalk-bounces at contesting.com] On Behalf Of Gedas
> Sent: Sunday, November 26, 2006 5:39 PM
> To: 'TowerTalk'
> Subject: Re: [TowerTalk] HF Vertical Opinions NEEDED...
>
> Mike, any idea on how your R8 performs vs. another vertical, say a ground
> mounted type with radials?  I think that would be very interesting.
>
> Gedas
> Image Gallery http://gedas.cc
> Web Site        http://w8bya.com
>
> ----- Original Message -----
> From: Mike Fatchett
> To: 'TowerTalk'
> Sent: Sunday, November 26, 2006 7:18 PM
> Subject: Re: [TowerTalk] HF Vertical Opinions NEEDED...
>
>
> I have a couple of R8 Verticals that are elevated and they work pretty 
> well.
> The do not require any radials.  Most other verticals will require 
> radials.
> Even the BigIR requires radials.
>
> Mike W0MU
>
> -----Original Message-----
> From: towertalk-bounces at contesting.com
> [mailto:towertalk-bounces at contesting.com] On Behalf Of D. Scott MacKenzie
> Sent: Sunday, November 26, 2006 5:16 PM
> To: Peter Voelpel; towertalk at contesting.com
> Subject: Re: [TowerTalk] HF Vertical Opinions NEEDED...
>
> Actually - the report that K7LXC did, is a good, well written report, with
> good experimental data to back up the claims.  It certainly helped me make
> an informed decision based on DATA as opposed to opinions.....
>
> Opinions are like a A...holes - everyone has them.  But data is worth the
> price.....
>
> Scott
>
> -----Original Message-----
> From: towertalk-bounces at contesting.com
> [mailto:towertalk-bounces at contesting.com]On Behalf Of Peter Voelpel
> Sent: Sunday, November 26, 2006 4:11 PM
> To: towertalk at contesting.com
> Subject: Re: [TowerTalk] HF Vertical Opinions NEEDED...
>
>
> I wonder whether you like to give helpful advise or make profit...
>
> 73
> Peter
>
> -----Original Message-----
> From: towertalk-bounces at contesting.com
> [mailto:towertalk-bounces at contesting.com] On Behalf Of K7LXC at aol.com
>
> In a message dated 11/26/2006 11:30:40 A.M. Pacific Standard Time,
> towertalk-request at contesting.com writes:
>
>>  I am going to be relocating to a new QTH and was looking at  getting
>> a  new
> multiband vertical.  I would like to have  something that would be for 
> 40 -
> 15 meters.   I know there are  lots of options out there, but just not 
> sure
> which ones are really worth  the money.  I have been steering more 
> thowards
> the Hy-Gain.  Any  help or opinions would greatly be appreciated.
>
>
>        While we didn't test the  SteppIR, there are a bunch of other
> verticals that we tested in our vertical  antenna comparison report
> available at _www.championradio.com/publications.html_
> (http://www.championradio.com/publications.html) .
>
>
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
>
>
> ------------------------------
>
> Message: 3
> Date: Sun, 26 Nov 2006 17:03:09 -0800
> From: Bob Nielsen <nielsen at oz.net>
> Subject: Re: [TowerTalk] HF Vertical Opinions NEEDED...
> To: TowerTalk List <towertalk at contesting.com>
> Message-ID: <DCE3C525-ECCB-49C9-80A4-A16ED9A86D91 at oz.net>
> Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed
>
> Yes, it does include the R8, but it wasn't elevated much and there
> was a ground screen.  Based on the results quoted, I was seriously
> looking at the R8, but the AV-640 is nearly identical except for not
> using traps and I went with that.
>
> Steve and Ward's yagi report is also excellent.  I worked on antenna
> ranges for many years in the aerospace industry and couldn't find
> anything to fault in their test methods.
>
> Bob, N7XY
>
> On Nov 26, 2006, at 4:47 PM, Mike Fatchett wrote:
>
>> I don't have any other verticals to compare it to.  I don't know if
>> the
>> publication K7LXC was citing includes the R8.  I worked plenty of
>> DX with it
>> this weekend but I don't have anything to comapare it to.  I am
>> surprised by
>> what I can work at times though.
>>
>> Mike W0MU
>>
>> -----Original Message-----
>> From: towertalk-bounces at contesting.com
>> [mailto:towertalk-bounces at contesting.com] On Behalf Of Gedas
>> Sent: Sunday, November 26, 2006 5:39 PM
>> To: 'TowerTalk'
>> Subject: Re: [TowerTalk] HF Vertical Opinions NEEDED...
>>
>> Mike, any idea on how your R8 performs vs. another vertical, say a
>> ground
>> mounted type with radials?  I think that would be very interesting.
>>
>> Gedas
>> Image Gallery http://gedas.cc
>> Web Site        http://w8bya.com
>>
>> ----- Original Message -----
>> From: Mike Fatchett
>> To: 'TowerTalk'
>> Sent: Sunday, November 26, 2006 7:18 PM
>> Subject: Re: [TowerTalk] HF Vertical Opinions NEEDED...
>>
>>
>> I have a couple of R8 Verticals that are elevated and they work
>> pretty well.
>> The do not require any radials.  Most other verticals will require
>> radials.
>> Even the BigIR requires radials.
>>
>> Mike W0MU
>>
>> -----Original Message-----
>> From: towertalk-bounces at contesting.com
>> [mailto:towertalk-bounces at contesting.com] On Behalf Of D. Scott
>> MacKenzie
>> Sent: Sunday, November 26, 2006 5:16 PM
>> To: Peter Voelpel; towertalk at contesting.com
>> Subject: Re: [TowerTalk] HF Vertical Opinions NEEDED...
>>
>> Actually - the report that K7LXC did, is a good, well written
>> report, with
>> good experimental data to back up the claims.  It certainly helped
>> me make
>> an informed decision based on DATA as opposed to opinions.....
>>
>> Opinions are like a A...holes - everyone has them.  But data is
>> worth the
>> price.....
>>
>> Scott
>>
>> -----Original Message-----
>> From: towertalk-bounces at contesting.com
>> [mailto:towertalk-bounces at contesting.com]On Behalf Of Peter Voelpel
>> Sent: Sunday, November 26, 2006 4:11 PM
>> To: towertalk at contesting.com
>> Subject: Re: [TowerTalk] HF Vertical Opinions NEEDED...
>>
>>
>> I wonder whether you like to give helpful advise or make profit...
>>
>> 73
>> Peter
>>
>> -----Original Message-----
>> From: towertalk-bounces at contesting.com
>> [mailto:towertalk-bounces at contesting.com] On Behalf Of K7LXC at aol.com
>>
>> In a message dated 11/26/2006 11:30:40 A.M. Pacific Standard Time,
>> towertalk-request at contesting.com writes:
>>
>>>  I am going to be relocating to a new QTH and was looking at  getting
>>> a  new
>> multiband vertical.  I would like to have  something that would be
>> for 40 -
>> 15 meters.   I know there are  lots of options out there, but just
>> not sure
>> which ones are really worth  the money.  I have been steering more
>> thowards
>> the Hy-Gain.  Any  help or opinions would greatly be appreciated.
>>
>>
>>         While we didn't test the  SteppIR, there are a bunch of other
>> verticals that we tested in our vertical  antenna comparison report
>> available at _www.championradio.com/publications.html_
>> (http://www.championradio.com/publications.html) .
>>
>>
>> _______________________________________________
>>
>>
>>
>> _______________________________________________
>> TowerTalk mailing list
>> TowerTalk at contesting.com
>> http://lists.contesting.com/mailman/listinfo/towertalk
>>
>> _______________________________________________
>>
>>
>>
>> _______________________________________________
>> TowerTalk mailing list
>> TowerTalk at contesting.com
>> http://lists.contesting.com/mailman/listinfo/towertalk
>>
>> _______________________________________________
>>
>>
>>
>> _______________________________________________
>> TowerTalk mailing list
>> TowerTalk at contesting.com
>> http://lists.contesting.com/mailman/listinfo/towertalk
>> _______________________________________________
>>
>>
>>
>> _______________________________________________
>> TowerTalk mailing list
>> TowerTalk at contesting.com
>> http://lists.contesting.com/mailman/listinfo/towertalk
>>
>> _______________________________________________
>>
>>
>>
>> _______________________________________________
>> TowerTalk mailing list
>> TowerTalk at contesting.com
>> http://lists.contesting.com/mailman/listinfo/towertalk
>>
>
>
>
> ------------------------------
>
> Message: 4
> Date: Sun, 26 Nov 2006 20:39:02 EST
> From: Cqtestk4xs at aol.com
> Subject: [TowerTalk] Grounding the rotor cable
> To: TOWERTALK at contesting.com
> Message-ID: <c3d.98fb020.329b9bb6 at aol.com>
> Content-Type: text/plain; charset="US-ASCII"
>
> At 12:47 PM 11/26/2006, Bill Turner wrote:
>>I've read the PolyPhaser  document on protection for ham stations but
>>it is vague on how to protect  rotator cables. First, I wonder how much
>>protection, if any, is needed in  the first place? In my tower, the
>>rotator is inside the tower and the  control lines run down inside the
>>tower as well. Coming out from the  tower at the bottom, they run
>>underground to the shack, about 70 feet  away. It seems to me that
>>neither the rotator nor the lines
> ``~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> Interesting thoughts.  I NEVER ran any Polyphasers etc on my rotor 
> cables.
>
> Everything was disconnected at the bulkhead by Cinch-Jones  plugs.
> Amazingly
> even though I had lots of rotors on the 200 foot  towers, I never had a
> rotor
> failure from a lightning hit...mechanical  damage from wind etc, but no
> electrical problems.  My gut feeling is there  are few direct hits on the
> rotor
> cables and most of the damage from  non-disconnected stems from the 
> induced
> voltage of the hit and perhaps providing  a great ground for the main
> lighting
> charge to travel to ground through the  house mains by way of a short,
> jumping from
> the tower or coax to the  cable.
>
> Bill K4XS/KH6
>
>
> ------------------------------
>
> Message: 5
> Date: Sun, 26 Nov 2006 20:48:36 -0500
> From: "Dr M J DiGirolamo" <DrD at 2020.com>
> Subject: [TowerTalk] Needed: Andrews LDF4-50A Coax
> To: <towertalk at contesting.com>
> Message-ID: <00ba01c711c6$27c64310$6701a8c0 at fm55k01>
> Content-Type: text/plain; charset="us-ascii"
>
> Hi Gang,
>
>  I'm looking for two strands of Andrews LDF4-50A (1/2" hardline) of about
> 110'
> each.
>
>  Anyone have some lengths laying around, not being used?
>
> 73,
>
> Mike DiGirolamo, W4XN
> Charlottsville, VA 22901
>
>
>
> ------------------------------
>
> Message: 6
> Date: Sun, 26 Nov 2006 20:02:15 -0600
> From: "Jim McDonald" <jim at n7us.net>
> Subject: [TowerTalk] LMR600
> To: <towertalk at contesting.com>
> Message-ID: <004801c711c8$17eda490$6401a8c0 at Dell8300>
> Content-Type: text/plain; charset="us-ascii"
>
> Is LMR600 or the equivalent too stiff to pass through three 45-degree 
> sweeps
> in a 4" PVC?  How about with an 89' crank-up tower?  I am trying to decide
> whether to reuse my Davis RF Bury-Flex or replace it.  This antenna, a 4L
> SteppIR, will have 6M on it, and I've never had to be concerned with
> attenuation for that band before.
>
>
>
> Jim N7US
>
>
>
>
>
> ------------------------------
>
> Message: 7
> Date: Sun, 26 Nov 2006 21:03:49 -0500
> From: "K8RI on TowerTalk" <K8RI-on-TowerTalk at tm.net>
> Subject: Re: [TowerTalk] Grounding the rotor cable
> To: <TOWERTALK at contesting.com>
> Message-ID: <007101c711c8$4d4d6e40$6500a8c0 at SecondOne>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=original
>
> I don't disconnect anything since I finished the ground system 
> installation.
>
> That's mainly because the connections are too difficult to get at and the
> storm would be past by the time I could get them disconnected.
>
> Since the ground system was finished I've had no damage yet the tower 
> takes
> at least 3 direct hits on average per year. It was five the first half of
> this past summer.  I say at least as those have been observed.
>
> IF I recall correctly Tom said he didn't disconnect anything either, but
> I've only seen one post from him in recent months. I understand he's over 
> on
>
> the amps reflector.
>
> Roger Halstead (K8RI and ARRL 40 year Life Member)
> N833R - World's oldest Debonair CD-2
> www.rogerhalstead.com (Use return address from home page)
>
>
>> At 12:47 PM 11/26/2006, Bill Turner wrote:
>>>I've read the PolyPhaser  document on protection for ham stations but
>>>it is vague on how to protect  rotator cables. First, I wonder how much
>>>protection, if any, is needed in  the first place? In my tower, the
>>>rotator is inside the tower and the  control lines run down inside the
>>>tower as well. Coming out from the  tower at the bottom, they run
>>>underground to the shack, about 70 feet  away. It seems to me that
>>>neither the rotator nor the lines
>> ``~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>
>> Interesting thoughts.  I NEVER ran any Polyphasers etc on my rotor
>> cables.
>> Everything was disconnected at the bulkhead by Cinch-Jones  plugs.
>> Amazingly
>> even though I had lots of rotors on the 200 foot  towers, I never had a
>> rotor
>> failure from a lightning hit...mechanical  damage from wind etc, but no
>> electrical problems.  My gut feeling is there  are few direct hits on the
>> rotor
>> cables and most of the damage from  non-disconnected stems from the
>> induced
>> voltage of the hit and perhaps providing  a great ground for the main
>> lighting
>> charge to travel to ground through the  house mains by way of a short,
>> jumping from
>> the tower or coax to the  cable.
>>
>> Bill K4XS/KH6
>> _______________________________________________
>>
>>
>>
>> _______________________________________________
>> TowerTalk mailing list
>> TowerTalk at contesting.com
>> http://lists.contesting.com/mailman/listinfo/towertalk
>>
>
>
>
> ------------------------------
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
>
> End of TowerTalk Digest, Vol 47, Issue 95
> *****************************************
>
>
>
>
>
> _______________________________________________
>
>
>
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> 



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