I use a Model 197 RF Limiter/Arrestor by Industrial Comms Engineers for my K9AY Loop. I think I got it from DX Eng ~ 10 yrs ago, but also chk w/ Array Solutions since I think they now handle the K9AY Loop. - Alan K9MBQ
-----Original Message----- >From: N4ZR <[email protected]> >Sent: Oct 10, 2019 9:30 PM >To: topband reflector <[email protected]> >Subject: Topband: Protecting an Array Solutions K9AY Loop from Transmitted RF > >I'm in the process of building up a K9AY loop, using the Array Solutions >boxes, and it occurred to me that I probably need to work out some way >to protect the preamp in the shack-end box from transmitted RF, >particularly since the K9AY loop is only about 60 feet from the vertical >leg of my inverted L and I'll be running 1500 watts. > >I can see maybe cutting off the DC to the preamp, but figure that won't >be enough. Alternatively, I can probably work out a way to either open >or short the feedline coming into the indoor box where the preamp is. >Any advice as to which would be best (opening or shorting)? I only have >one spare transistor. > >Advice much appreciated > >-- > >73, Pete N4ZR >Check out the Reverse Beacon Network >at <http://reversebeacon.net>, now >spotting RTTY activity worldwide. >For spots, please use your favorite >"retail" DX cluster. > >_________________ >Searchable Archives: http://www.contesting.com/_topband - Topband Reflector _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
