Update: I just got the 2.4 filter back in its little niche, soldered and tightened lugs, and the original problem is gone. Calibrator level is the same now on all three filters :)
Steve Wedge, W1ES/4 "I can't complain, but sometimes I still do." - Joe Walsh If the above message appears, it came from Steve's Son of Laptop! ----- Original Message ----- From: Steve Wedge To: drakelist@zerobeat.net Sent: Thursday, February 09, 2012 4:35 PM Subject: [Drakelist] R-4C 2.4 kHz filter Garey, you were right, as usual. I pulled the 2.4k filter out of the R-4C (late prod). I am hoping I can get it back in, as it's definitely microsurgery! After liberating the filter, I checked the continuity of the wiring - connectivity is fine through both switch wafers. So I wired up the filter with some short hook-up wire (you can't just plug into any of the accessory sockets due to the studs for the GND connections) and plugged it into the .25 filter bay. The additional insertion loss is gone! Getting this back in its place is going to be a workout. I'm figuring at this point that we had a bad connection - but I've got a nagging feeling the problem will be back when I reinstall the filter. Still - this is a better place to be right now than holding a $100+ replacement and discovering I didn't need it. 73, Steve Wedge, W1ES/4 "I can't complain, but sometimes I still do." - Joe Walsh If the above message appears, it came from Steve's Son of Laptop! ------------------------------------------------------------------------------ _______________________________________________ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
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