[Elecraft] K3: Spit mode off dial frequency

[Edward R Cole]

I had a strange situation yesterday while running on 2m eme.

I use a sw program called MAP65 which uses JT65 for Tx/Rx.  MAP65 
allows one to watch a wide bandspan up to 90-KHz (similar to a 
panadaptor).  To operate VFO-A is set to the middle frequency of the 
span one wants to observe and one clicks the waterfall display to 
chose a particular frequency to operate on.  In order to transmit 
there one has to operate split mode so VFO-B controls the Tx.  All 
fine so far, but...

Yesterday when I attempted to operate in split mode my actual 
transmit frequency was +1.5 KHz from what the dial on VFO-B 
showed??  Turning off split and frequency transmitted was what was 
shown on VFO-A (which is normal).  I have no offsets set in the 
menu?  RIT and XIT were off.

Later I tested the radio on 28-MHz by itself and split mode 
transmitted what VFO-B shows on the dial.  But putting the radio back 
on 2m (transverter mode) and frequency was off again using split mode.

I used my EIP538 frequency counter to measure transmit frequency 
(counter is within 1-Hz of my Rubidium frequency source so very accurate).

Well I found out why this was happening (by exploring my manual).  In 
the Menu is a setting called SPLIT SV and it was set=YES.  Turning it 
to "NO" removed the offset.  I have no idea what exactly this setting 
does but that solved the issue.  I even had penciled it "yes" as the 
correct setting back when I got the radio (2010).  SPLIT SV has to do 
with something with saving SPLIT, RIT, and XIT by band.

If I have a 2m frequency error its normally corrected by XV1 OFS 
setting.  What SPLIT SV accomplishes is beyond me.

73, Ed - KL7UW
http://www.kl7uw.com
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