Hello Evert, Yes, I think I may rig up something to use the K3 TX-Inhibit line when I take my K3 on DXpedition to E51 in 2 months. Good idea! TNX and 73, Lance
Evert Bakker (PA2KW) wrote: > Lance, > > This is the only proper way for serious VHF stations. Use your feedback > contact of the final RX/TX coaxial relay (which is most probably mounted in > the top of your tower) as a final go for the RF out of the K3 by using the > TX-Inhibit Line. > > 73's Evert PA2KW > > Cu > > -----Original Message----- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Don Wilhelm > Sent: Wednesday, January 14, 2009 23:31 > To: w...@q.com > Cc: Elecraft Discussion List > Subject: Re: [Elecraft] Sequencer keying with K3/XV-144 without rigblaster? > > Lance, > > It has already been thought of and included in the K3 - see below. > > I am not sure if you are referring to the KEY OUT jack on the back of > the K3 or the PTT jack. > The PTT jack is an input - one would plug the footswitch into it, or > alternately use the PTT on the microphone or the PTT from the RS-232 input. > KEY OUT becomes active as soon as the PTT is activated - there is also a > KEYOUT-LP signal on the ACC connector that acts the same as the KEY OUT > jack except with a limit of 10 ma. > > The K3 normally transmits RF after the KEY OUT is active by the amount > of time entered into the CONFIG menu TX DLY parameter - that provides a > maximum of 20 ms RF delay. > > For those who need more time that that, there is the TX INH function > that can be configured for pin 7 of the ACC connector - it can be > configured for either TX INH LO=Inh or HI=Inh. This signal will prevent > the K3 from transmitting RF until the inhibit signal goes away. See the > K3 Owner's manual page 19. > > 73, > Don W3FPR > > Lance Collister wrote: > >> Hi Dave, >> >> You raise an interesting question....maybe that is the elegant solution to >> > > >> integrating the K3 into old kluge-like VHF stations with lots of coaxial >> > relays, > >> homebrew amplifiers, etc. >> >> PTT output jack on the rear of the K3 could optionally be configured as a >> sequencer itself, so it would close an adjustable amount of time (up to a >> > second) > >> BEFORE any RF would be permitted to be generated after the rig is put into >> > XMIT by > >> either the microphone/footswicth or the serial port PTT lines. >> >> Certainly, this option would not be selected by those who want to work >> > QSK! But > >> they would simply not choose the option. If this option were stored by >> > band, you > >> could have a built-in sequencer only on certain bands, and QSK on other >> > bands! > >> With such an option, you would never have to worry about blowing anything >> > up, > >> regardless of how the K3 incoming PTT line itself was keyed ;-) >> >> What do you think, Elecraft? VY 73, Lance >> >> >> > _______________________________________________ > 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 > > > > -- Lance Collister, W7GJ (ex: WN3GPL, WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8) P.O. Box 73 Frenchtown, MT 59834 USA QTH: DN27UB TEL: (406) 626-5728 URL: http://www.bigskyspaces.com/w7gj 2m DXCC #11/6m DXCC #815 _______________________________________________ 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
