[Elecraft] Split fail to engage

[Richard Ferch]

N1IRB wrote:

> Please help. My split does not seem to be engaging. I'm in SSB and when I
> turn on split I get the indication in the window but I am clearly still
> transmitting on VFO A frequency. No idea why that might be.
>
> I don't need the 2nd reciever to work split do I?
>

No, you don't need the second receiver to work split.

What is the evidence that convinces you that you are transmitting on the 
VFO A frequency? Have you checked this on the air with someone using a 
split offset of, say, 5 kHz?

On some radios, the larger and smaller (upper and lower) frequency 
displays are exchanged when transmitting in split mode, but this does 
not happen on the K3. Don't let the fact that the main frequency display 
doesn't change fool you into thinking you are not transmitting split.

Some people find the K3's indications of split operation a bit subtle. 
There are three of them: 1. The SPLT indicator appears on the display; 
2. Just to the right of the SPLT indicator, a small triangle points down 
from the letters "TX" to the B indicator (when not in split mode, the 
triangle points up to the A indicator; and 3. The yellow "Delta-f" LED 
under the Power switch lights up, provided the VFO A and VFO B 
frequencies are different.

Another way of transmitting split, for frequency differences less than 
10 kHz, is to use RIT or XIT. When you use this method, the VFO A 
display changes between receive and transmit states. This does not 
happen when you use Split mode to transmit from VFO B. There is a reason 
for this difference: RIT/XIT actually changes the frequency of VFO A, 
hence the display change, whereas Split mode using the Split button does 
not change the VFO A frequency, but rather switches the transmitter to 
using VFO B.

One minor oddity: When RIT and XIT are both engaged with a non-zero 
offset, the yellow "Delta-f" LED comes on. It shouldn't, since the 
transmit and receive frequencies are the same in this case.

73,
Rich VE3KI