[TowerTalk] RMC-1000 remote - what type of cable to run?

[Howard W6HDG]

Ray,
I just joined the list today so hope I am 
responding properly.  Thanks for the pics.  Are 
your MARB and MAF parts from 40 years ago as 
well?  They look brand new.  Very nice job on your base.

I'm in Poway north of San Diego.  It has been 
less than 2 months since our new antenna 
ordinance has gone into effect - see page 81 in 
Nov QST.  This will be my very first tower.

I have power nearby.  I'll attach a pic of my 
base and see if it gets to the group.  This was 
from last week before the forms got removed.  US 
Tower wants the steel template to stay put for 24 
hours after the pour, so you can see the elevated 
frame which allowed the concrete to be troweled smooth underneath.

Two questions for you - are you going to put 
non-shrink grout under the base as US Tower 
suggests?  And how do you keep the exposed base 
threads from rusting? Mine are already starting.

Howard W6HDG


At 10:19 AM 11/6/2014, you wrote:
>Howard,
>
>For that short of a run, I would use rotator 
>cable would work. Is the AC going to be at the 
>base of the tower. For mine, the AC is at the base of the MA770.
>
>My MA770 came from an SK in the Hollywood Hills.
>
>Where are you in So Cal? I grew up in SD, and in 
>the 70's moved to Ventura and the Ojai Valley. 
>Retired in 2009 and moved to Chino Valley, 15 
>miles north of Prescott, AZ. Beautiful county and a very nice place to live. Â
>
>Attached are 4 photos of my installation here in 
>AZ. I'll have to dig deeper to find the photos 
>of when I brought the tower to my CA home showing the limit switches.
>
>Ray,
>N6VR
>
>
>
>On Thu, Nov 6, 2014 at 11:02 AM, Howard W6HDG 
><<mailto:W6HDG at arrl.net>W6HDG at arrl.net> wrote:
>Ray,
>Thanks very much.   I guess that rotor cable would be too lightweight?
>
>I know that this tower design has been around a 
>long time - I didn't realize 40 years.  The 
>winds are mostly gentle in my area of S. 
>California so I'm hoping for 65 feet extension 
>without too much sway.  I'm putting a Steppir 
>DB18 (96 pounds) on it.   I will be able to 
>supervise my tower traveling up and down outside 
>my shack window.  The shack is just 20 feet from the base.  73, Howard W6HDG
>
>At 09:48 AM 11/6/2014, you wrote:
>Howard,
>
>The cable should be 8 conductors, and depending 
>on cable run, 14ga or 16ga. There is no large 
>current traveling in the conductors, mainly control signals.
>
>I have a 40 year old MA770 in the air, but would 
>think the mounting of the limit switches and 
>type are different. I took off the limit 
>switches on mine, and because of winds, only raise the tower about 2/3 height.
>
>I do have photos of the originally mounted limit 
>switches but may take me awhile to find them.Â
>
>Send me a personal email and I can send you some photos when I find them.
>
>73,
>
>Ray,
>N6VR
>
>PS, there was another ham on this reflector who 
>was selling his MA770 about 2 - 3 months ago. 
>You may want to search the archives for him. His call may be N2JFS???
>
>On Thu, Nov 6, 2014 at 10:25 AM, Howard W6HDG 
><<mailto:W6HDG at arrl.net>W6HDG at arrl.net> wrote:
>I've got a US Tower MA-770MDP on order with the 
>RMC-1000 remote.  I want to prewire my shack 
>before the tower arrives.  Does anyone know 
>the specifics of the required cable - how many 
>conductors and sizes?  I don't imagine that 
>US Tower will be providing this cable, will it?  Tnx  Howard W6HDG
>
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