[Elecraft] Lightning protection.

[Barry Baines]

Dave:

> On Aug 15, 2020, at 11:05 AM, Dave Baxter via Elecraft <elecraft at mailman.qth.net> wrote:
> 
> FYI.
> 
> RS232 (and other serial link type) LEMP (Lightning Electro Magnetic Pulse)
> surge protectors are available from several vendors, and not that
> expensive, compared to the cost of a rig, or top range PC.
> 
> Often wonder why (other than expence) fibre optic links are not used.  CAT
> & audio over a LAN or USB FO link?
> 
> Would help general EMC issues too.

Following a lightning incident back in 2014, I followed the adage that Al, N4ZZ put out about using Fiber in the shack for ethernet connections.  I have four fiber lines from the house to the garage/hamshack that replaced two ethernet lines. Each is 111. ft long.  Each line carries a grouping of connections such as one for my Flex system, one for my Electraft system, one for Broadcastify and data collection, and the fourth for ‘all other’.  I have my network in the shack segregated so that if the Flex system goes out the Elecraft system will hopefully continue. Given that I primarily operate remotely, redundancy in amateur operations is critical because it may be 4-6 weeks between visits to the ham shack that is over 1,280 miles away.

I also use fiber as a ‘fire break’ between network switches in the shack and high value equipment such as transceivers.  

I haven’t found suitable fiber media converters for RS232 or USB.  I still have Telco and CATV coax running between the house and shack; it would be nice to find a fiber media converter for those lines as well.   I will probably remove them given they are not currently in use.  



FWIW,

Barry Baines, WD4ASW
(Currently in Boston/Roslindale, MA)


> 
> Dave G0WBX
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