Thanks for all the replies on the Celwave filter, including Jeff's info. I picked up a few of these a couple of years ago at Dayton ( the guy in the middle of the fleamarket every year that has all those nice jumper cable assemblies), and at the time quickly installed one in front of a GM300 link radio at another site. My link receiver was getting hammered all day long from the 20 or so UHF systems at the site mixing with each other, and the filter worked like a champ. The receiver has been interference-free ever since. At the time it was a fast and sloppy tune, but it has been working ever since. Not too critical for a link receiver application, but this time around it is going on an MSR2000 repeater receiver, so every db counts!
I was able to tune it quite nicely to pass a window of 440-450MHz (give or take) with two nice notches in the 460 and 470 areas, so it should take care of a minor issue I have at one of my sites. Just under 2db insertion loss including two 24 inch sma to n RG400 jumper cables. About 30-40db down above 460MHz, and two nice 50+db notches. I should have picked up a few more of these as cheap as they were. Although, I did waste a few $$ on some larger filters he had with N connectors. Those would not reach above 430MHz, so I eBayed them and they went to a Eurpoean ham club. I also wish I would have picked up some of the nice sma-bnc or N cables that he was selling this year. The time I spent making them up, not including materials, was worth more that he was selling them for.. 73 Eric KE2D www.w2njr.org --- In Repeater-Builder@yahoogroups.com, [EMAIL PROTECTED] wrote: > > At 5/22/2008 19:13, you wrote: > > >Eric, > > > >The 9182510Y17 filter is a Motorola product, made by Celwave. Call Motorola > >Parts ID at 800-422-4210, and have the clerk find what the Celwave part > >number is. Then call Celwave (RFS World) to get servicing data. It may be > >a long shot, but also ask the Parts ID clerk what Motorola manual covers > >this filter. You might luck out- if it's not out of print. > > > >It may be a good idea to ship the unit back to Celwave for a factory > >conversion to your desired frequency. Such units seldom can be moved more > >than 10 or 15 MHz without loop adjustment. > > I have 3 of these window filters, though not quite the same part # > (9182510Y26 & 9182510Y01 and 'Y02). The Y26 filter tuned into the 440 band > with no problems (as received it was tuned to 409-416 MHz), while the Y01 > needed modification to bring it up into the ham band. I can't remember the > details of what I did other than I lengthened the threaded rods by > soldering some heavy-gauge solid wire to the ends, & removed a wire coupler > that was placed between 2 of the sections. > > One of the Y01s/Y02s is on the mountain, so I can't pop it open but I may > have another one kicking around at work. If I do & you need the mod. > details let me know. The center passband loss should be around 1 dB. > > Bob NO6B >
