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

[Joe Subich, W4TV]

> But is there a real reason why its not possible?  Or are we 
> simply a firmware update away from being able to do what the 
> 9000 can? 

No, firmware can not change the signal flow in the K3 hardware 
that routes the transmit signal through circuitry (including 
roofing/bandpass filters) common to the main RX. 

> It wouldn't be optimal but heck even if N1MM would 
> simply operate A/B then TX then operate A/B again in quick 
> succession and log it under the VFO B slot it could be a work 
> around and then they could do that with many other radios.  
> But honestly I find it hard to believe that cross band split 
> isn't possible with the current hardware.

You could contact K3CT who has written most of the K3 support 
code in N1MM.  However, most users would probably object to 
the constant flopping of VFOs and entry windows in N1MM Logger. 
SO2V is a unique operating style and was never intended to be 
a cheap man's SO2R.  Since there isn't a single traditional 
transceiver - including the K3/KRX3 - that permits receiving 
on one receiver while transmitting on the other, SO2V is not 
a suitable substitute for SO2R anyway. 

73, 

   ... Joe, W4TV 
 



> -----Original Message-----
> From: Brett Howard [mailto:brett at livecomputers.com] 
> Sent: Saturday, June 20, 2009 11:23 AM
> To: lists at subich.com
> Cc: 'Elecraft List'
> Subject: RE: [Elecraft] SPL N/A with everybody on CW?
> 
> 
> But is there a real reason why its not possible?  Or are we 
> simply a firmware update away from being able to do what the 
> 9000 can?  It wouldn't be optimal but heck even if N1MM would 
> simply operate A/B then TX then operate A/B again in quick 
> succession and log it under the VFO B slot it could be a work 
> around and then they could do that with many other radios.  
> But honestly I find it hard to believe that cross band split 
> isn't possible with the current hardware.
> 
> On Sat, 2009-06-20 at 09:19 -0400, Joe Subich, W4TV wrote:
> > > Before I could simply click in the log window for VFO A or on
> > > a DX Spot and poof the TX arrow would point up.  Then simply 
> > > click on a spot in the VFO B band map and poof you're on that 
> > > freq and you're TX arrow is pointing down.  Almost felt like 
> > > a SO2R setup even though it was just SO2V. 
> > 
> > Dual band receive works just fine (each VFO on a different band
> > and "sub" on) as long as you are connecting a receive antenna 
> > to the AUX antenna jack or the sub receiver is on a lower band 
> > than the main receiver.  You can change VFO B to a different 
> > band if you are in dual rx.  What you can't do is split with 
> > VFO A and VFO B on different bands.  The K3/KRC3 has always 
> > worked this way.  
> > 
> > The primary function of the N1MM Logger "SO2V" mode has always
> > been to support "in band" SO2R operation.  To my knowledge, there 
> > has not been any transceiver (with perhaps the exception of the 
> > FTdx9000) that provides full specification operation on two bands 
> > at the same time.  The Orion/Orion II subreceiver is grossly 
> > inferior to the main receiver and the FT-1000MP could not listen 
> > on a separate band because it lacked independent bandpass filters 
> > for the subreceiver.
> > 
> > 73,
> > 
> >    ... Joe, W4TV
> >  
> > 
> > 
> > > -----Original Message-----
> > > From: elecraft-bounces at mailman.qth.net
> > > [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of 
> Brett Howard
> > > Sent: Saturday, June 20, 2009 2:42 AM
> > > To: Elecraft List
> > > Subject: Re: [Elecraft] SPL N/A with everybody on CW?
> > > 
> > > 
> > > Wow I just tried doing an EE Init and set things up from
> > > scratch for the beginning bit and then gave things a try and 
> > > I was still unable to get cross band split to work as it 
> > > should.  This nearly makes using N1MM for SO2V nearly useless 
> > > and really degrades the usefulness of the KRX3.  Man I sure 
> > > hope I can figure this out before FD!  I was excited when it 
> > > was working before!  
> > > 
> > > Before I could simply click in the log window for VFO A or on
> > > a DX Spot and poof the TX arrow would point up.  Then simply 
> > > click on a spot in the VFO B band map and poof you're on that 
> > > freq and you're TX arrow is pointing down.  Almost felt like 
> > > a SO2R setup even though it was just SO2V.  
> > > 
> > > :(
> > > 
> > > ~KC7OTG
> > > 
> > > On Fri, 2009-06-19 at 22:42 -0700, Brett Howard wrote:
> > > > I should also state that I swear this was just working a minute 
> > > > ago
> > > > and now I seem to always get SUB N/A unless both VFO's are 
> > > on the same
> > > > band.
> > > > 
> > > > On Fri, 2009-06-19 at 22:20 -0700, Brett Howard wrote:
> > > > > Right now I've got VFO A on 14.030.00 and VFO B on
> > > 7.027.00 and I'd
> > > > > like to transmit on the VFO B freq.  Or I'm trying to
> > > setup N1MM so
> > > > > that when I click on the VFO B log section that it
> > > switches on split
> > > > > so that I can TX in the right band.  But I keep getting
> > > SPL N/A.  I
> > > > > even then tapped
> > > > > A->B twice and then went back to those frequencies and
> > > still got SPL
> > > > > N/A.  Seems like I'm unable to use the split and TX on
> > > VFO B if I'm
> > > > > on independant bands?  And yes both are set to CW.
> > > > > 
> > > > > Any ideas what I'm doing wrong?
> > > > >