[Elecraft] Workaround for providing automatic SSB < > CW VFOoffset

[pd0psb]

Just a quick thought:
Isn't all this possible by:
-setting VFO A to your SSB prefs
-setting VFO B to your CW prefs.
-make the right offset for sidetone
-link VFO's
-work split A/B
?

73'
Paul
PD0PSB



Joe Subich, W4TV-4 wrote:
> 
> 
> 
>> > It looks like the difference between this process and "send 
>> > CW while in SSB" which was added a while ago, is that with 
>> > this you switch to the CW filters. 
> 
> If the concern is about CW filters, simply configure the K3 to 
> enable the narrow filters in SSB.  Then you can use CW in SSB 
> and either crank down the width or preset the other filter bank 
> with a narrow filter configuration (BW=0.40, FC=0.70).  
> 
> With a CW configuration saved in the other filter bank going 
> from SSB to CW is really nothing more than toggling I/II. 
> 
> 73, 
> 
>    ... Joe, W4TV 
>  
> 
> 
> 
>> -----Original Message-----
>> From: elecraft-bounces at mailman.qth.net 
>> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Bill W5WVO
>> Sent: Thursday, June 11, 2009 4:58 PM
>> To: Peter Wollan
>> Cc: [Elecraft]
>> Subject: Re: [Elecraft] Workaround for providing automatic 
>> SSB < > CW VFOoffset
>> 
>> 
>> Correct, as well as having QSK mode available!
>> 
>> Peter Wollan wrote:
>> > It looks like the difference between this process and "send 
>> CW while 
>> > in SSB" which was added a while ago, is that with this you 
>> switch to 
>> > the CW filters.  Is that right?
>> > 
>> >     Peter N8MHD
>> > 
>> > 
>> > On 6/11/09, Bill W5WVO <w5wvo at cybermesa.net> wrote:
>> >> A number of VHF ops on the list (myself included) have 
>> been lobbying 
>> >> for some time for a feature that is standard on most or all HF+VHF 
>> >> Ikensu rigs: the ability to have the VFO automatically 
>> offset by the 
>> >> amount of the BFO pitch when switching between SSB and CW. This 
>> >> capability is typically of little interest to HF 
>> operators, where SSB 
>> >> and CW are rigidly separated into two distinct sub-bands. 
>> On VHF and 
>> >> UHF, SSB and CW are used interchangeably, as needed, on the same
>> >> (SSB) frequencies.       
>> >> 
>> >> I've already had extensive discussions with Wayne about this; the 
>> >> problem is, due to the software design architecture of the 
>> K3, it's 
>> >> not as easy to implement as it sounds like it should be.
>> >> 
>> >> The performance objective for switching from SSB to CW (CW 
>> to SSB is 
>> >> simply the reverse) is for ONE button tap to accomplish:
>> >> 
>> >>  (a) shifting the VFO frequency up (or down) 700 Hz (nominal pitch)
>> >>  (b) switching the K3 from USB to CW REV (or from LSB to CW)
>> >>  (c) bringing into play a pre-configured set of CW characteristics 
>> >> that go with the transmission mode
>> >> 
>> >> The workaround I've come up with accomplishes this, at the 
>> expense of 
>> >> having a free VFO B to play with. On VHF/UHF, however, there is 
>> >> virtually no split operation (except satellites), so this isn't as
>> >> big a deal as it sounds like.   
>> >> 
>> >> Here's how to do it, assuming USB and a pitch offset of 700 Hz 
>> >> (substitute your own pitch setting if not 700):
>> >> 
>> >> (1) Set MODE to USB, and set up all desired RX characteristics for 
>> >> this mode in the normal fashion.
>> >> 
>> >> (2) Set display resolution to FINE so it displays Hz 
>> (three decimal 
>> >> places).
>> >> 
>> >> (3) Tap A/B button, and repeat Step 2.
>> >> 
>> >> (4) Now set each VFO in turn (select using the A/B button) 
>> such that 
>> >> one is zeroed out (xx.xxx.000), and the other displays xx.xxx.700.
>> >> 
>> >> (5) Hold SUB and notice that the display says LINK. The 
>> two VFOs are 
>> >> now locked together and will track 700 Hz apart.
>> >> 
>> >> (6) Use the A/B button to select the VFO with the +700 Hz offset. 
>> >> This will be your CW VFO.
>> >> 
>> >> (7) Set MODE to CW REV, which will give you the same 
>> tuning direction 
>> >> as USB.
>> >> 
>> >> (8) Set up all desired RX characteristics for this mode in 
>> the normal 
>> >> fashion.
>> >> 
>> >> This completes the setup. From now on, a tap of the A/B 
>> button will 
>> >> switch from USB to CW REV or from CW REV to USB, and the VFO will 
>> >> automatically be set to the correct frequency, removing the
>> >> requirement of retuning to acquire the signal.   
>> >> 
>> >> RIT can still be used in the normal manner, but the offset will be 
>> >> carried on RX when switching from one VFO to the other. 
>> Depending on 
>> >> what you're trying to do, this may or may not be a good thing. Just
>> >> be mindful of the behavior.   
>> >> 
>> >> Please critique these instructions if you find anything unclear.
>> >> 
>> >> Bill W5WVO 
>> >> ______________________________________________________________
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> 
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