The plate on the end is coated with a metallic coating on the side facing the N connectors. I think it is plastic.
Need to make sure that is still on there. If not use spray glue and carefully apply some aluminum foil to the side toward the N connectors. In any event that wavy surface needs to be metallic. It is a weird semi cassegrain sub reflector that re-bounces the signal from the main reflector into the waveguide. Between the plate and the circular waveguide tube is a short segment of fiberglass tube. Make sure nothing is covering that fiberglass section other than paint. The fiberglass is there to hold up the plate. It will work with nothing there as long as the plate is spaced a certain distance from the end of the metallic tube. Inside the N connectors there is really nothing but waveguide probes. Just take off the N connectors, clean them and the waveguide probe (brass knob thingy) and put them back in. There is very little to fail here. From: ch...@wbmfg.com Sent: Monday, May 7, 2018 5:26 PM To: af@afmug.com Subject: Re: [AFMUG] Dual Pol Feed Horn Should be fixable. Just clean it out and seal it up. I can test it for you if you want. From: Brian Sullivan Sent: Monday, May 7, 2018 5:13 PM To: af@afmug.com Subject: [AFMUG] Dual Pol Feed Horn I'm looking for a replacement of this type of 5GHz feed horn. I had some water ingress and the inside looks corroded. Since this is the only part that is bad, i'd like to buy just this piece. Need 2 or 3 if possible. I believe this is from a Laird/PacWireless brand dish. Google has failed me once again, I can't find any in-stock or that don't cost more than a new dish.
