Danny, Visit the Celwave site at <www.rfsworld.com> and navigate to the "Contact" page. Call or write the tech support department and ask for the tuning instructions in PDF.
73, Eric Lemmon WB6FLY -----Original Message----- From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Danny Musten Sent: Saturday, January 20, 2007 4:24 PM To: [email protected] Subject: [Repeater-Builder] Celwave Preselector Tuning I have one of the small 941-PB4-2-3 Celwave Band Pass Preselectors ( UHF ). There are 7 stubs, 4 are on the pass cans, 3 in-between the 4 resonators. Adjusting any of the 3 stubs (between each of the 4 resonators) has little effect on the skirt. I might assume that these 3 might be related to bandwidth spread, but I am not seeing any adjacent attenuation, notch or change. Can anyone share light on tuning these and what the intended function of the 3 "in-between" stubs are. Here is the thing, for reference: <http://www.rfsworld.com/RFSglobal/datasheet.asp?PN=941%2DPB4%2D2%2D3&FAM=Fi lters <http://www.rfsworld.com/RFSglobal/datasheet.asp?PN=941%2DPB4%2D2%2D3&FAM=Fi lters> > Danny KD4RAA
