This adjustment is not yet coded into the firmware but is on the list to be done.
------------------------- 73, Greg - AB7R Whidbey Island WA NA-065 K3#0009 On Tue Feb 5 11:45 , AD6XY - Mike sent: > >I do not think any of the replies so far have understood the question. How do >you program the radio to a specified delay producing RF after the PTT >signal. The minimum 10mS is far too fast for many applications, 50mS to >100ms is necessary. > >Sequencing is absolutely essential for power amplifiers and especially >pre-amplifiers and especially at VHF and above. The relays must have settled >and achieved maximum isolation before any RF appears and this takes time. >While many RF relays are quite fast, they are frequently not as fast as the >front end is to fail. > >Eric knows this and has built an adjustable delay capability into the radio, >all that is needed is how to program the delay. > >Mike > > > > >Lee Buller wrote: >> >> I know that sequencing of Rigs and Amps has been an issue with many brands >> of radios. As I am researching the features of the K3, I did not see any >> parameter in the documentation that would set a delay. So, I went to the >> list archives (see I can look things up) and found this answer. >> >> Eric Wrote last October.... >> >> "If a radio has proper Key-Out before RF sequencing, like the K3 and K2 >> do, this is NOT necessary. We have no problem running with relay based >> amplifiers, including those with large, slow relays, like the SB-220 etc. >> >> A few radios out there have a TX loop feature, but most others do not. >> Its not needed with the K3. >> >> 73, Eric WA6HHQ" >> >>>From what I gather from his response, is that the sequence is already >built in the firmware of the K3 as well as the K2. So the K3 will not >"squirt-out" RF until the "relay circuit" is closed...or should I say the >firmware makes sure the switching transistor is on before emitting RF. >> >> Is that the case? Therefore, no special parameter would be needed. I >> would like a clarification of this feature from the users and what users >> have found in "real-life." >> >> Lee Buller >> K0WA >> "It is DANGEROUS to read the manual before getting the rig." >> >> >> >> >> In our day and age it seems that Common Sense is in short supply. If you >> don't have any Common Sense - get some Common Sense and use it. If you >> can't find any Common Sense, ask for help from somebody who has some >> Common Sense. Is Common Sense divine? >> _______________________________________________ >> 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 >> >> > >-- >View this message in context: http://www.nabble.com/Key-Out-of-the-K3- tp15295805p15298032.html >Sent from the Elecraft mailing list archive at Nabble.com. > >_______________________________________________ >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 _______________________________________________ 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
