Re: [Repeater-Builder] polyphaser Help

[Dick]

Whatever you do, DON'T connect the polyphaser grounding lug to an AC outlet ground lug!!!  That would bring HUGE voltages and currents into the building electric power system and expose everything on it to disaster!!!  In which case you'd do well to carry enough insurance to replace all of the electric and electronic gear in the building.   If you plan to connect it to the metal roof, make sure the metal roofing is securely grounded via an 8-foot ground rod in the earth near the building.  In fact, there should be several such ground rods for a metal roof.   The average frequency of a lightning discharge is around 125 KHz, so you can use that to calculate lightning rod cable lengths, etc.   You might do well to contact the other tenants in the building and see how they feel about installing a proper lightning diversion system, including a proper lightning rod and cable.   Happy New Year, Dick         ----- Original Message ----- From: [EMAIL PROTECTED] To: repeater-builder@yahoogroups.com Sent: 30 December, 2005 11:22 Subject: [Repeater-Builder] polyphaser Help Replacing a small, rooftop (about 90ft)  repeater setup.  The prior system had no lighting protection, just straight coax from antenna to duplexer.  I was looking into getting a polyphaser if needed but there is no way to ground it that I can tell.  Two options I have would be to somehow tap into the metal roof and connect it to that? or at the radio-end of the coax attach it to a nearby AC outlet's ground?  A grounding line/rods aren't a real good option since it is on another businesses property.  Any suggestions? YAHOO! GROUPS LINKS  Visit your group "Repeater-Builder" on the web.    To unsubscribe from this group, send an email to:  [EMAIL PROTECTED]    Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.