Good Afternoon All: Here is something I have been seeing now for a while. In my R-4a, every cold start in the morning, the OB2 flickers and glows VERY bright. From an angle, it looks like there are flames on the inside of the rcvr. I almost spilled my coffe all over trying to get back to the switch the first time I saw this.
It will go on for quite some time and eventually die down to the normal red glow. If I cycle the power a couplle of times, it will usually stop and show a normal glow on the second or third restart. I originally thought it was because of relatively low morning temps in the shack..about 55 degrees, but it seems there is really no corelation to temperature--occasionally after running for 6-10 hours, it will just start the really bright flickering. I have replaced the OB2 and checked all components and voltages around this area and they are all proper. The radio has been re-capped and all PS voltages are nominal. There is no detectable noise or other performance change while this is ocurring that I can tell but in 40 years of ownership, this has only been happening lately. Any Ideas?? Thanks Curt KU8L _______________________________________________ Drakelist mailing list [email protected] http://mailman.zerobeat.net/mailman/listinfo/drakelist
