I'd just like to make the list aware of a bug that 2 of us have encountered in the latest firmware (MCU 1.65 or 1.66 and DSP 1.52). I understand this was fixed previously and has crept back into the codeline. Elecraft are aware and working to resolve it.
It manifests itself as bursts of AF on the internal speaker (possibly external speaker if plugged in) when phones are plugged in. Since it needs VOX on and your're getting speaker noise, it often triggers the VOX (regardless of Antivox setting) and you get +ve feedback. The following configuration is required to reproduce this: * Some noise or signal on antenna, you don't here this issue if there isn't. * VOX on * Phones (or just blank plug) plugged into front or rear connector * SPKR+PH set to NO * Filter at any width * NR set to something high'ish (F2-2) * Doesn't necessarily require NB, if NR is not causing it, adding NB does. It appears to be the addition of NR which triggers this and some settings on NR do not, but then if you bring in DSP NB, as that gets more aggressive, it starts triggering the bursts on the speaker again. With the right (wrong) settings, its possible to get this pulsing every 1 or 2 seconds. I reverted my firmware to MCU 1.58 & DSP 1.48 and the problem has gone away. Unfortunately, so has the controlled TUNE power setting :( In a strange way, thanks to Mark Roz who also had this problem and prevented me from thinking I was going NUTS. I'd like to hear (off list) from anyone else who has this, but I may not reply to you individually. And even stranger, my random signature generator pulled this one out - this applies to software and firmware too :) -- When one tugs at a single thing in nature, he finds it attached to the rest of the world. -John Muir, naturalist, explorer, and writer (1838-1914) _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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
