[RFI] coaxial entrance panel

[EDWARDS, EDDIE J]

Jorge, 

You can find six really decent whitepapers and/or articles (with photos!) on lightning protection on DX Engineering's web site at this link:
http://www.dxengineering.com/techarticles/lightningandrfiinfo 

The articles/papers are heavy on Polyphaser brand stuff (now owned by Protection Technology Group), but you can compare and substitute other brands as needed.  Polyphaser used to also have good papers before they were bought out by PTG.  

Those Hofi-Technik surge protectors don't appear to be made for outdoor use, and most are not, so I assume you plan to weatherproof them if using them outdoors.  I don't know of any surge suppressors that have a right angle connection like you mentioned.  But you can get either bracket or bulkhead mounted suppressors from most vendors and make it work as you described.

Two important things to keep in mind with grounding cables for lightning protection; (1) do your best to create a single-point grounding system for all RF & utility entry cables--this can be entry into the home or just the shack entry point if no other option exist--but still tie all utility grounds to the single point ground system, and (2) ground all coax shields before entry to house/bldg since they say most lightning energy is usually found on the shield.  The suppressor is just the last bit of protection after the cable's shield is grounded.  Without the shield grounded first, the protectors might just blow-up when taking direct hits (I've heard this, but have not seen it).  

73, de ed -K0iL

-----Original Message-----
From: RFI [mailto:rfi-bounces at contesting.com] On Behalf Of Jorge Diez - CX6VM
Sent: Thursday, December 27, 2012 6:02 AM
To: rfi at contesting.com
Subject: [RFI] coaxial entrance panel

Hello

 

Actually I have a mess of coaxial going inside the shack to the different
antennas switches and six-pack. I disconnect always when leaving the
station, but now are up to 16 things to connect and disconnect (antennas,
rotors, beverages) all around the shack.

 

Is time to do a restructure of this. I read that the best way is to ground
all coaxial in a copper bar, maybe doing a hole in the wall of the shack to
install the copper bar to connect all of that. So I have a common place to
connect all and not in different places like now.

 

I have a question about that. It´s OK to install a SO239 barrel on the
copper bar or is better to install a coaxial surge arrestor
(http://www.arraysolutions.com/Products/hofi-lp.htm) for that?

 

I think a right angle barrel or surge arrestor will be better, so the
coaxial will come below the ground to the shack wall, then climb vertically
against the wall till the copper bar and then inside the shack go horizontal
to the diferents boxes.

 

Any idea or suggestion about that?

 

If you have photos are better for me to understand, my English vocabulary
not good, some photos helps a lot to understand

 

Thanks!

Jorge

CX6VM/CW5W 

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