Noel,
Like it or not, this device does exactly what you have indicated... I do
NOT recommend products because I have a personal or business interest in any
given company... I recommend a product because it provides the means of
solving a problem... Now, if this is offensive to you, DELETE THIS POSTING
and let me know if you would like me to place your ID on my
'to-be-instantly-deleted' list... I responded because you have a problem,
and I have a possible solution. What more do you want..?
73, Larry - W1GOR
http://www.arraysolutions.com/Products/ice/impulse2.html#4
Rotator line / remote switch transient suppressor / RF filter
----------------------------------------------------------------------------
----
Unshielded control line conductors used to operate remote switching
operations, antenna rotators, and home weather stations are easily charged
to thousands of volts potential referenced to ground by overhead lightning
discharges, frequently causing severe darnage to equipment.
In the RF transmitting environment, these same leads often couple into
transmitted energy and re-radiate signals at ground level, resulting in
interference to nearby equipment tuned to other services.
Models 347, 348 and 349 solve both problems in one convenient unit. Easy to
install and virtually permanent, this suppressor shunts RF currents and
voltages over 20V, 50V or 120V directly to facility ground terminal
connection.
Installation is a breeze and takes only a few moments. Each wire (up to 8
conductors) entering from rotating unit or switch box may be attached to any
of the 8 insulated terminals on the side of the unit. The same wire then
continues from that connected point onward to control box destination.
Connect the metal case to a ground rod or system and you're all set. May be
used indoors or outdoors, designed for flat surface mounting, includes
stainless steel grounding terminals.
Uses metal oxide varistor devices, AC or DC voltage rated, ceramic
high-capacity RF bypassing componentry.
Packed with storage box, mounting hardware, 4-page owner's manual.
Order Model Type Price
347 For use with 20V or less systems, AC or DC $44.00
348 For use with 50V or less systems, AC or DC $44.00
349 For use with 120V or less systems, AC or DC $44.00
----- Original Message -----
From: "Noel" <yaesurig@msn.com>
To: "'TowerTalk'" <towertalk@contesting.com>
Sent: Monday, September 13, 2004 2:14 PM
Subject: RE: [TowerTalk] Grounding control cable/Rotator control box
> Thanks to everyone who has responded to my query about grounding my
> control cable/rotator control unit. But at the risk of sounding
> unappreciative of all the good advice I've gotten here on Towertalk. I
> feel it necessary to mention my dislike with what seems like constant
> pushing of one device or another when someone asks for information.
>
> Based on the responses it would appear that some don't even read the
> message and assume you're looking to purchase whatever they happen to be
> peddling. I'm really not interested in purchasing a polyphazer or
> monophazer or whatever other device. If I were I'd ask for it. It's
> great when people tell you what works for them under like circumstances.
> But too often it seems the responses are geared toward selling you this
> or that, even when it may not be what you're looking for.
>
> I use towertalk for information from other hams regarding all things
> tower related. I know some on here will have interests in commercial
> products and so it may be natural to lean towards their products. But,
> personally I'm not interested in the subtle solicitations to purchase
> your products. I know some will be offended by that but someone had to
> say it.
>
> That said. My tower is grounded with three #2 stranded copper wires
> from each leg each going to three 8ft copper ground rods spaced 16ft
> apart. Thanks especially to Roger Halstead's great website on how he
> did his. Anyway, each rod/wire point is exothermically welded using
> Caldweld oneshots. The shields of the two coax cables going up the
> tower are each grounded at the base of the tower. At the shack
> entrance, I've built my own single point ground where my station
> equipment is grounded to other ground rods just outside. My coax
> cables all connect to a grounded antenna switch, also goes to the SPG,
> so if I disconnect the radio side of the switch my radios are isolated
> from static or possible lightening strike. This method still leaves the
> coax going to the antennas grounded. So I'm not worried about my coax or
> antenna ground.
>
> What is NOT grounded is the control cable going up the tower and neither
> is the control unit itself, a Yaesu G-450XL, since it does not seem to
> have a ground lug for this purpose. The control cable is a shielded six
> pair cable. I use two conductors for each rotator connection. And I've
> grounded the shield of the control cable also at the base of the tower,
> but not the conductors themselves. This is my problem at the moment. As
> the control cable conductors build up static as they have no path to
> ground and go directly to the rotator control box. Anyone familiar
> with how to resolve this I'd appreciate the advice.
>
> Thanks
> Noel
>
>
>
> _______________________________________________
>
> 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
_______________________________________________
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.
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