Hi folks, I'd like to again point Your attention to an old problem with my K2 setup.
My setup includes: K2 s/n 2360 with all official mods and newest firmware, KPA100/KAT100 in EC2 enclosure with KPA100 F/W V1.10 and the newest shield upgrade. After making the last F/W updates the problem seemed to have vanished away. But I was wrong. >From time to time KPA100 looses its tPa setting resulting in an odd behaviour. Most offen this bug results in a PA HOT display, locking out the rig (usually in the middle of a contest). Today tPa jumped to "0 C", which was a new version of this bug for me. I do not have a RF-in-the-shack problem. In fact I have run out of ideas how to overcome the issue! Maybe I should go for the dirty way and replace the EEPROM with a ROM ?! Is there any way to lock out the WRITE function of the EEPROM on hardware level? I have a programming device available. But there should be a better solution for this. I do not understand exactly what is happening in the unit. Maybe high SWR on the feedline is causing fluctuations on the AuxBus, which are interpreted as a WRITE command? Did anyone finally overcome this problem? Maybe Wayne could implement a new (more complex) communications procedure for writing the tPa value. This would make it more unlikely to trigger a WRITE command by random AuxBus activity. Any ideas? Any help? VY 73 de Marcus, DL1EKC _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
