Polyphaser made a test box for a few years...model was F.I.S.T. 4. Worked really well..
Watch ebay...they may turn up there at times. Cecil K5DL Sent using recycled electrons. > On Mar 1, 2015, at 5:27 PM, "Tom W8JI" <w...@w8ji.com> wrote: > > When I test things like that, I high pot them with a home made tester. Things > like this are not difficult to make. You can buy a surplus HV power supply > used to ionize air for a few bucks, and stick it in a box with a meter on it. > > You don't need to get fancy, just check it for breakdown voltage. If it is > bad, the breakdown voltage will be way off. > > Ameritron gets about 5-10 customers a year where gas tubes in lightning > protection go bad. They break down early. The result of that is an amplifier > can get up to a few hundred watts or more, and then *wham* the feedline > shorts! This is always great on parts. > > I don't have a single GDT in my TX system, although I've tried them in my RX > systems out in switch boxes near antennas. I have mixed results using low > voltage GDT devices to protect relays and stuff. I have no damage at all in > the house without them. > > 73 Tom > > > > > ----- Original Message ----- From: "Art Snapper" <a...@nk8x.net> > To: "Greg Wilson" <n...@windstream.net> > Cc: "160" <topband@contesting.com> > Sent: Sunday, March 01, 2015 5:37 PM > Subject: Re: Topband: Polyphaser > > >> Polyphaser made a tester. >> http://wrblock.com/WRBproducts/DIGIfist/DigiFIST.html >> >> Possibly a land mobile shop in your area has one. Essentially they >> generated low current, high voltage until the tube fired. >> >> Perhaps it is different with HF, but in my land mobile experience, if the >> supressor was damaged, either it was shorted, or obvious damage was >> present when disassembled. >> >> Their antenna protectors have significant attenuation when used outside the >> rated frequency range. >> >> >> Art >> >> >>> On Sun, Mar 1, 2015 at 7:17 AM, Greg Wilson <n...@windstream.net> wrote: >>> >>> Does anyone know how to test a Polyphaser to know if it is still good? I >>> have some that have seen some lightning storms and was wondering if they >>> are still doing the job. Thanks, Greg >>> _________________ >>> Topband Reflector Archives - http://www.contesting.com/_topband >> _________________ >> Topband Reflector Archives - http://www.contesting.com/_topband >> >> >> ----- >> No virus found in this message. >> Checked by AVG - www.avg.com >> Version: 2014.0.4800 / Virus Database: 4257/9209 - Release Date: 03/01/15 > > _________________ > Topband Reflector Archives - http://www.contesting.com/_topband _________________ Topband Reflector Archives - http://www.contesting.com/_topband