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?





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