[Elecraft] SPL N/A with everybody on CW?

Brett Howard brett at livecomputers.com
Sat Jun 20 17:11:05 EDT 2009


Its not difficult to understand its just annoying.  Essentially we're
all in agreement that the radio can do it.  I think that the firmware in
the rig could actually make this happen 100% automatically.  The only
difference is that when operating cross band split you're going to have
relays clicking when you tx.  And depending on how its implemented to
try and save the relays you may not be able to do QSK when using cross
band split.  

I'd be 100% ok with those limitations but having to explain to someone
how to hit A/B and then only log in VFO A because you can't transmit
from VFO B is going to be a pain.  Then when you explain to them well
actually you can transmit from VFO B but only if they are both in the
same band.  Once you get used to how well it works when you've got both
in the same band it would just be nice to do it cross band.  At that
point you've got pretty much an SO2R without the full duplex capability.

I suppose maybe I can turn off the VFO IND feature when others run the
radio but then they're going to think its lame in that when ever they
change the band on one VFO the other one changes too...

I've been looking into doing a macro and no matter what it seems like
the macro is going to be somewhat annoying in that you'll have to see
the switching and what not.  Seems like without source code you're going
to have to be manually executing these scripts too.  So anything I end
up with is going to be a kludge and the kludge will be just as hard to
explain as manually pushing the buttons...

Oh well.  Maybe we'll have some of these features by next FD.  If one is
willing to put up with a bit of relay switch delay all of this is 100%
possible.  Now its just a matter of if enough people feel its worth it
to step a little bit away from the current K3's operating convention and
make it happen.

~Brett (KC7OTG)

On Sat, 2009-06-20 at 13:15 -0700, Bill W4ZV wrote:
> 
> 
> Merv Schweigert wrote:
> > 
> > I am some what confused with the issue.   I also had assumed,
> > that if when I installed the 2nd receiver that split operation was
> > possible.   To say it takes a 2nd transmitters is not true.  It has
> > to be a switching issue in what I call software, firmware by others.
> > 
> > For instance my old FT-1000D,  if you put vfo A on 14.0 mhz
> > and vfo B on 7.0 mhz and hit the split button you listen on 14
> > and transmit on 7.  or you can cancel split and work whatever
> > band is on the vfo selected.   In essence you can work two bands
> > at the same time.  Have done that since 1990 so its no new idea.
> > And I can use the Sub rx to listen to any band no matter if its
> > above or below the main rx band.  
> > 
> > What am I missing other than assuming that the K3 is lacking the
> > basic operations of 25 year old radios?   At some point the increased
> > performance in one area is over ridden by the lack of features in
> > many other areas. 
> > The idea of buying two radios to do the job is also not viable, 
> > spending 1000 bux and doing a few mods on a 25 year old radio
> > will yield a pretty competitive radio in comparison to 8000 worth
> > of K3's?
> > 
> > Seems that this can be implemented and if its not possible due to
> > hardware we have a problem.  Maybe not for some but a lot of
> > us. Big enough for me to reconsider keeping the K3.
> > 
> 
> You can do all of the above as long as you remember that the band you want
> to TX on **MUST** be the same one the K3's VFO A is tuned to.  If it's not,
> then simply press A/B.  Why is this so difficult to understand?  You also
> work cross-band but VFO A must be the band you want to transmit on.
> 
> 73,  Bill
> 



More information about the Elecraft mailing list