Disregard still drinking coffee.....you already answered the question. -----Original Message----- From: Af [mailto:af-boun...@afmug.com] On Behalf Of Andy Trimmell Sent: Thursday, July 23, 2015 8:22 AM To: af@afmug.com Subject: Re: [AFMUG] ePMP and/or 50kw FM stations
how long are your cat5 runs to those 410 ft heights? Do you have fiber up the tower to a switch or did you attempt a 410ft cat5 run? -----Original Message----- From: Af [mailto:af-boun...@afmug.com] On Behalf Of Joe Falaschi Sent: Thursday, July 23, 2015 2:22 AM To: af@afmug.com Subject: Re: [AFMUG] ePMP and/or 50kw FM stations We have 450 APs at 410 feet with a 50k station just above it, something like 440 to 500 feet or something. We see some minor CRC errors on the 450 and more so on the FSK and that is with fiber up the tower. We tried an EPMP at the same elevation and we couldn't connect an SM to the AP much less even get into the AP's management page. This seems like it was over a year ago. We didn't do a whole lot of investigation. We like EPMP a lot but it didn't work for us on a high power FM site when the two units were close. That said we have an EPMP on the same tower at 120 feet that we are using as a BH to another site and it is working great. So, your situation may work out ok. FYI, we have the radio station turn the transmit power down each time we climb. They don't like to do that during the morning and evening drive time. Joe Falaschi e-vergent On 7/22/15 6:15 PM, George Skorup wrote: > I have a connectorized ePMP on a 2' dish at 125 feet on a 50kW FM > site. The bays start at 420 feet though. And it's 50kW EIRP. Something > like 15-16kW actually on the transmission line. There's also a low > power station at 250 feet, but it's under 3kW I think. The 450 AP at > 225 feet sees some CRC errors sometimes. The ePMP radio doesn't have > any problems though. The guys didn't listen to me and ran our cat5 > bundle right next to the high power transmission line. "But there were > waveguide brackets there, it was so easy!" I smash your face now. > > On 7/22/2015 4:00 PM, Josh Luthman wrote: >> Has anyone had good luck on FM stations recently? I would *LOVE* for >> the radios to have an SFP, but it seems that's just not available. >> I'm wonder if fiber up ~250' and then 10-20 foot shielded cat5 would >> be sufficient to protect the ethernet ports from such high power. >> >> I'm also weary about getting on the tower for having such high power >> 250 feet away, but that's a secondary issue. >> >> Josh Luthman >> Office: 937-552-2340 >> Direct: 937-552-2343 >> 1100 Wayne St >> Suite 1337 >> Troy, OH 45373 >
