I have heard numbers like 90 and 100 wpm for operative QRQ for the K3, but don't have time to go research where I heard that. I *know* it runs sweet at 60 and 70 WPM. BTDT.
But I will caution that certain problems with key contact surfaces will produce a signal impossible to debounce. These problems were *very* common with older bugs and straight keys. Having a single debouncing strategy for 90 wpm QRQ, and for degraded contact surfaces extremely common with bugs and old straight keys is probably an oxymoron. There is a reason that Vibroplex offers a resurfacing service for contacts on their products. Pitting and carbonizing from keying 250 volts at 150 milliamps, scratching, wearing, sandpapering (yes people did that), flattening, filing (yes people did that), yada, yada, yada. These were all huge issues in the day before common affordable electronic keyers, standalone and built-in, and polished single chip solutions like Win-Key. If I was a modern manufacturer and had a choice between servicing 90 wpm QRQ and debouncing bugs and straight keys with questionable contact surfaces, I would choose QRQ hands down. Not close. Easy smackdown choice for QRQ. Those of us who want to use the old stuff need to make allowances. Getting rid of key clicks in my Johnson Viking Ranger I is a problem I have never really conquered. And I can't bring myself to spend the bux to get the contacts on my Vibroplex bug resurfaced. That's *my* issue, not Elecraft's. Programming resources and subsequent testing for transceiver firmware is one of the most expensive components of any modern transceiver. Manufacturers have to make choices that will return a profit or they will go out of business. 73, Guy K2AV On Mon, Jun 20, 2016 at 2:15 PM, lstavenhagen <[email protected]> wrote: > I imagine it's because of the QRQ support that it doesn't have dedicated > debouncing circuitry for straight keys, but I'm not sure about that. The K2 > does have some small caps across the key input, but it too still gives me > slight problems when I key it with my straight key. Though it's not as bad > as with the K3(s).. > > I'm just going to use an external keyer on mine, since I have other uses > for > a dedicated keyer in general. Most Curtis based keyers have debouncing > built-in for use with straight keys and bugs. > > 73 > LS > W5QD > > > > > > -- > View this message in context: > http://elecraft.365791.n2.nabble.com/R-Re-K3S-losing-swr-wattmeters-indications-on-tx-please-help-tp7619048p7619062.html > Sent from the Elecraft mailing list archive at Nabble.com. > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
