It will most likely have to be. -----Original Message----- From: Greg Ihnen <[email protected]> Reply-To: WISPA General List <[email protected]> Date: Thursday, August 30, 2012 9:31 AM To: WISPA General List <[email protected]> Subject: Re: [WISPA] Guidance for mounting gear on an AM tower
>That was my first thought too, the possible pattern change. The antenna >might have to be resurveyed after the install. > >Greg > >On Aug 30, 2012, at 9:27 AM, [email protected] <[email protected]> wrote: > >> The station engineer should be the lead information contact. If he is >>clueless most AM stations have engineering firms on retainer. >> >> Adding equipment to certain stations can change the antenna radiation >>pattern. Obviously the FCC doesn't lie this. ;-) >> >> -B- >> >> ----- Reply message ----- >> From: "Brian Gray" <[email protected]> >> To: <[email protected]> >> Subject: [WISPA] Guidance for mounting gear on an AM tower >> Date: Wed, Aug 29, 2012 8:43 pm >> >> >> Besides staying away from an AM tower, does anyone have any guidance as >>far as mounting equipment, specifically POE equipment on one without >>problems for us or the AM tower? >> >> How do I keep AM RF out of my POE cables and my radios / antennas? >> >> How do I ground my gear? >> >> My initial thoughts are: >> >> Install equipment enclosure at base of tower, attached to tower. >> Run 1" metallic liquid tight (MLT) up tower to aluminum enclosure at >>200', >> continue run from enclosure with 1" MLT up to 300' to additional >>aluminum enclosure >> run 2 3/4" MLT from 200' enclosure to 2 backhaul radios (probably UBNT >>NB25 to start with) >> run 3 3/4" MLT from 300' enclosure to 3 sector antennas (probably UBNT >>Rocket M2) >> drill small weep holes in 3/4" runs as they will not be weather tight >>to radios >> run shielded cat 5 inside metallic liquid tight. >> Put 2-3 ferrite cores on the ends of all of the cables. >> install poe surge arrestors on both ends of cables, just before radio >>and just before router. >> wrap rf choke into both ends of a/c power cable running from enclosure >>to circuit panel >> No clue on grounding this thing. >> >> Thank you in advance! >> >> >> >> Brian Gray >> >> Joink LLC >> Network Manager >> 812-231-7087 direct >> 812-870-3332 mobile >> >> Joink Customer Support 1-888-31-JOINK >> >> _______________________________________________ >> Wireless mailing list >> [email protected] >> http://lists.wispa.org/mailman/listinfo/wireless > >_______________________________________________ >Wireless mailing list >[email protected] >http://lists.wispa.org/mailman/listinfo/wireless > _______________________________________________ Wireless mailing list [email protected] http://lists.wispa.org/mailman/listinfo/wireless
