The reality on an AM site is that the whole thing is a crap shoot. You could throw up the cheapest crap in the world and it could work fine. Then you throw up the best stuff on the market and you have nothing but headaches.
AM sites are really to be avoided even if they are not direct fed. Use shielded cable. Bond to the tower every 50 feet or so. I would discuss the application with one of the surge arrestor manufacturers like Polyphaser or Harger before putting any old CAT5 surge arrestors on the lines. I know of sites that have microwave equip on the tower where the tower is hot and they work without issue. You should be ready to spend time and money troublshooting issues at this site. And assume you may not be able to use it at all Good luck Bob Sent from my Verizon Wireless BlackBerry -----Original Message----- From: "Doug Ratcliffe" <do...@dwwfl.com> Date: Mon, 5 Jan 2009 11:00:05 To: WISPA General List<wireless@wispa.org> Subject: Re: [WISPA] POE up AM radio tower True. The height is 160 feet. I was thinking about using outside plant heavy duty shielded 25-pair Cat5e rated 50-pin telco cables, rather than 14 individual cat-5 wires, going into 6-cable cat5e octopus cables at the top and bottom for easier cable management. ----- Original Message ----- From: "Dustin Jurman" <dus...@rapidsys.com> To: "WISPA General List" <wireless@wispa.org> Sent: Monday, January 05, 2009 9:59 AM Subject: Re: [WISPA] POE up AM radio tower > Brian, > > > > They knew way before. How high are you going up? > > > > Dustin > > > > From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On > Behalf Of Brian Rohrbacher > Sent: Monday, January 05, 2009 9:46 AM > To: WISPA General List > Subject: Re: [WISPA] POE up AM radio tower > > > > > > Doug Ratcliffe wrote: > > So now that the entire internet now has figured out which tower I'm > talking > about (including local competition that may not have known where my tower > broadcasts were located)... > > All the more reason to use the members list...... > > > > What kind of ethernet/POE shielding would allow > me to run my switches/power packs/etc at the bottom of this tower based on > 1kW? > > ----- Original Message ----- > From: "Leon Zetekoff" <mailto:wa4...@arrl.net> <wa4...@arrl.net> > To: "WISPA General List" <mailto:wireless@wispa.org> <wireless@wispa.org> > Sent: Sunday, January 04, 2009 7:34 AM > Subject: Re: [WISPA] POE up AM radio tower > > > > > WMFJ is 1 kw as I thought. Matter of fact I might have been at that > station evaluating it for a friends family in the 90s. It was one > station in Daytona. > > Here's the link: > > http://www.radio-locator.com/cgi-bin/finder?call=wmfj > <http://www.radio-locator.com/cgi-bin/finder?call=wmfj&x=15&y=6&sr=Y&s=C> > &x=15&y=6&sr=Y&s=C > > Chuck McCown - 3 wrote: > > > I am guessing WMFJ > > ----- Original Message ----- From: "Leon D. Zetekoff, NCE" > <mailto:wa4...@backwoodswireless.net> <wa4...@backwoodswireless.net> > To: "WISPA General List" <mailto:wireless@wispa.org> <wireless@wispa.org> > Sent: Saturday, January 03, 2009 7:09 PM > Subject: Re: [WISPA] POE up AM radio tower > > > > > * Doug Ratcliffe wrote, On 1/3/2009 7:33 PM: > > > The tower is a 4-leg self supporting tower, it was built a long time > ago, > built from what I've heard in the mid 1900's... The antennas for > the tower > are isolated from the tower, it appears that there are 3 vertical > antennas, > attached with copper tubing from the transmitter to each of the > antennas > (which are on isolated standoffs, top to bottom. There is some kind of > matching transformer in the building under the tower. The tower is > 10kW, > 1450 AM (good guess on the frequency!).. > > > > I think 1450 is a CLASS IV (or what was a CLASS IV) freq and should be > 1kW. What's the callsign and location? > > leon > > > > > ---------------------------------------------------------------------------- > ---- > WISPA Wants You! Join today! > http://signup.wispa.org/ > ---------------------------------------------------------------------------- > ---- > > WISPA Wireless List: wireless@wispa.org > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ > > > > > > > > ---------------------------------------------------------------------------- > ---- > WISPA Wants You! Join today! > http://signup.wispa.org/ > ---------------------------------------------------------------------------- > ---- > > WISPA Wireless List: wireless@wispa.org > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ > > > > > -------------------------------------------------------------------------------- > WISPA Wants You! Join today! > http://signup.wispa.org/ > -------------------------------------------------------------------------------- > > WISPA Wireless List: wireless@wispa.org > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ > -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
