TS-930 update

October 9th, 2008 by k8gu Leave a reply »
TS-930S AVR board

TS-930S AVR board

Thanks to KA5IPF and WE0H, who answered my query on the TS-930S reflector!  The oscillation was due to dried-out electrolytic capacitors on the AVR board and unhappy pass transistors on the heatsink in the back.  I bought 105 C capacitors instead of the 85 C ones that Kenwood used, plus bumped the voltage rating up to 63 V instead of 50 and 35.  Fortunately, I still had some leftover 2N5886’s, but I need to buy a replacement set of capacitors and pass transistors to have on hand in case the other radio fails.  I haven’t tested it in contest conditions, but all signs are good that we should be ok.  Maybe the NS tonight?

Have a Synton ARC (sorry about the ancient web site…we are going to fix it…sometime) meeting at 2:00 today.  Everybody else in the Club is building SoftRocks.  I’m bringing my IK4AUY preamp parts to start building.  Need to order some PL-259’s, probably today.  Yeah, and I need to finish writing my prelim exam document and presentation.  So much to do.  So little time.