And was the Tik connected to the surge suppressors?

From: Josh Luthman 
Sent: Monday, August 31, 2020 8:21 AM
To: AnimalFarm Microwave Users Group 
Subject: Re: [AFMUG] Surge cards, what should I expect?

Surge cards are only inside the building. 

We lost 0 ethernet ports on the Tik.


Josh Luthman
Office: 937-552-2340
Direct: 937-552-2343
1100 Wayne St
Suite 1337
Troy, OH 45373


On Mon, Aug 31, 2020 at 9:59 AM Ken Hohhof <[email protected]> wrote:

  We’ve gone to the “Cat6” (gas tube) versions but I don’t think that has any 
bearing on your question, if anything they may offer less protection, but 
better Ethernet data integrity.



  Are you putting these at both ends of the cable, or only at the switch or 
router end?



  I never assume they protect the radios, unless the surge is coming from the 
network side, e.g. a power line surge.  They protect the network equipment like 
switch, router or POE.  If the surge is coming from the radio end, my personal 
opinion is a surge protector may actually increase the chance of radio damage 
by giving the surge a path to ground via the cable.  But let’s face it, if the 
tower take a hit, you may lose equipment no matter what you do for grounding or 
surge protection.  Best bet may be fiber for data and a direct power cable with 
a DC surge protector right at the radio.



  Strange that the Powerbridge was the only survivor, as you say, it’s not 
exactly a high end piece of equipment, basically a Rocket PCB built into a 
panel antenna.  But it might be interesting to do a failure analysis on the 
stuff that died.  Most of the time I find it’s the power supply that got fried, 
the radio won’t even power up.  I looked at a Transtector product once that had 
fuses in the protection modules, that would seem to mean you always have to 
replace the modules after a surge, but maybe the fuse opening up is better for 
the radio.



  I suspect you just had a bad day.  It happens despite best efforts.  



  From: AF <[email protected]> On Behalf Of Josh Luthman
  Sent: Monday, August 31, 2020 8:27 AM
  To: AFMUG <[email protected]>
  Subject: [AFMUG] Surge cards, what should I expect?



  I've regularly used the 444 cards.  Pretty much exclusively for years we've 
been using the GIGE-APC-HV.



  On a tower with 9 devices, I lost 8 of them.  We've had 0 problems on this 
tower since adding the surge cards almost 6 years ago.  A mix of Ubnt/Cambium.  
The one device that survived was a Powerbridge (the shitty panel) with one of 
the old surge cards that has an LED on it indicating power.  All 8 other 
devices needed to be replaced on the tower.



  What should I expect the surge cards to do?  I keep reading that the card 
should sacrifice itself so we can just replace the card on the ground instead 
of the radio on the tower - better for a 1 person fix, way cheaper, ground 
instead of tower, faster, etc.  The tower owner is a big Motorola R56 guy and 
gave us the thumbs up with how we did the grounding.



  Did I just get screwed hard for some reason?  An employee of the tower owner 
came out and had to fix some of their gear for their two way Motorola radio 
stuff, too, so maybe it was just a really shitty day.




  Josh Luthman
  Office: 937-552-2340
  Direct: 937-552-2343
  1100 Wayne St
  Suite 1337
  Troy, OH 45373

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