Download a copy of the Rohn 25 pdf here...
http://www.rohnnet.com/filedownload/downloadfile/fileid/17/filenum/0/src/@random48eced0c124b9
Also get a copy of "Up The Tower" from Champion Radio...
http://www.championradio.com/UP-THE-TOWER-The-Complete-Guide-To-Tower-Construction.1
Doug - K1ZO
Sent from my iPad
On May 13, 2014, at 3:20 AM, Michael Brumberger via TowerTalk
<towertalk@contesting.com> wrote:
>
>
> Hope you won’tmind answering a few questions/commenting….
>
>
> I have purchased new60ft (10ft sections) of Rohn 25 including a top section
> withrotor plate. It is in very good condition. I am in the process ofwashing
> it down with soap and water using Scotch Brite Heavy DutyPads. I will be
> spraying it with Rustolium silver.
>
>
> I am going toinstall it on a tilt over, that I have to buy, and attach to
> housewith bracket/brackets. I want to initially put in 40ft of tower max,and
> would like to go un-guyed. If guyed, I will only be able to putguy wires
> pulling “into the house” and attached to roof, andnothing going in the
> direction going opposite the bracket. The antennawill be a Mosley MP-33-N
> WARC. WT...29lbs, wind Surface...5.4 sqft...Wind Load EIA 80MPH 116.
>
>
> I live just outsideof Erie, Pa, which held the record for the snowiest city
> in the USthis winter with 137 inches. We also get severe thunderstorms
> inSummer, sometimes accompanied with high winds. I am concerned abouthow the
> antenna/tower will do in this environment, so am consideringonly going 30ft
> initially, and adding another 10 or 20 next Springafter I see how the 30Ft
> does this Summer and Winter.
>
>
> 1) Assuming un-guyedand going a max of 50ft, if I can, what dimensions
> does the concretebase have to be and how long should I let it cure? Rebars?
>
>
> 2) Recommendationsfor Rotor (Yeasu G-1000, TX2), Grounding, Lighting
> protection, Mast,
> Anything I forgot?Going to use Anti-seize on hardware. Self sealing tape
> forCoax/Connectors. New hardware for tower. Forgot the name, but a kindof
> paste to prevent corrosion on alum ant joints. From home depot.Will be at HRO
> in Del Wed and will price what I need. Where elsewould you call for pricing?
>
>
> 3) Perrecommendations of fellow hams, I am getting LMR400 from
> Shireenand something flexible for Rotor Loop.
>
>
> May think of morelater, but these answers will be most helpful!!
>
>
> Few more facts:
>
>
> Station...KenwoodTS590...Going to Del Thurs to pick up a 1970 homebrew amp
> capable ofclose to legal limit. Do not own an Antenna Tuner. Do I
> needone...Mixed opinions there, but I think yes. 1:1 Balun? Mixed again.
>
>
> Antenna will beliterally turning above my head so coax run will be short.
> Currentantenna is an Alpha-Delta DXCC 10-80..Loads on lower 6mtr with 1:1SWR
> and very top of 160. flat also everywhere else. Run to Dipolewill be appox
> 175Ft. Hence recommendation for LMR400.
>
>
>
> Mike Brumberger
> Amateur Radio Call... WB3DEL
> _______________________________________________
>
>
>
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>
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