TVB Et al, In my experience (horror stories from the field) they have worked well. RF characteristics are pretty good for all. I have used several of the Citel units myself.
Remember, the surge protector will do ABSOLUTELY NOTHING to protect the antenna. Their sole intent is to prevent large surges from getting into your electronics, house wiring, fingers, toes, etc. The receiver will be toast most likely, unless the hit is far away. Bear in mind that the front end of the antenna is a little, tiny, low voltage, lo-noise amplifier that really doesn't want to see any more that about a -60dB signal. It doesn't take much energy to pop one of these. Just ask any boat owner who has placed his GPS antenna within the sweep path of his marine radar.......... I did have one case several years ago where a customer called to order a new timing antenna. He had no lightning protection and the receiver survived just fine (ya just can't kill a VP - they die when they damn well feel like it......) Turned out the weak point in his system was his computer. Most of the energy passed through the case, but the serial card was absolute toast..... Randy ____________________________________________________________________________ -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Tom Van Baak Sent: Friday, February 29, 2008 2:50 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] GPS-Attached Equipment Lightning Protection RF gas-based lightning surge protectors are widely available; look on eBay for items with words like: Huber Suhner Polyphaser EMP surge lightning suppressor protector RGT gas For example, http://search.ebay.com/search/search.dll?satitle=Polyphaser+protector http://search.ebay.com/search/search.dll?satitle=Suhner+lightning http://search.ebay.com/search/search.dll?satitle=EMP+surge I'd be interested in reports on how well these work for GPS antennas, both in terms of lightning protection and in terms of attenuation, tempco, or phase delay. /tvb _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
