Gino, Try not grounding at all?
On Sun, Oct 25, 2015 at 1:39 PM, George Skorup <[email protected]> wrote: > I have no doubt it's the SS clamping that's blowing the fuse. If there was > no fuse, I bet the SS would continue clamping and start smoking if there's > enough current to supply it. I don't know if it helps save things, but I'm > leaning towards yes. Just getting all of the radios on the same DC bus > seems to have helped quite a bit as well. > > On 10/25/2015 12:51 PM, Ken Hohhof wrote: > >> Speaking of fuses, I know sometimes we get overcurrent trips on CTMs and >> SyncInjectors and have to reset them. Very rare, but always during storms. >> It is possible this is saving radios, I can't say for sure. >> >> >> -----Original Message----- From: George Skorup >> Sent: Sunday, October 25, 2015 12:34 PM >> To: [email protected] >> Subject: Re: [AFMUG] Site Grounding - what we are doing wrong? >> >> One thing we've been doing for several years now is a bonding wire up >> the tower. I do not trust the tower steel/leg joints being low enough >> resistance. Failure rate went way down. DC and fuses doesn't hurt either. >> >> On 10/25/2015 10:57 AM, Gino Villarini wrote: >> >>> So we are loosing radios left and right due to lightning! >>> >>> Typical site setup: >>> >>> Radios on tower grounded to tower >>> >>> Shielded cable >>> >>> Shielded patch panel - grounded >>> >>> Regular cat5 jumpers >>> >>> Wbmfg SS - grounded >>> >>> Regular cat5 jumpers >>> >>> Poe device >>> >>> What's wrong? >>> >>> >>> >> >> >
