[Elecraft] K3--CAT IS command will shift IF while in TX

[Jim Sheldon]

I had noted the same problem with HRD but attributed it to HRD.  I had not been playing with the IF shift, but did have some RF feedback problems that came from an USB dongle soundcard I was experimenting with.  

It also messed up some of my other settings, so I just reloaded a previous configuration I had saved with the utility.  That took care of the problem and I didn't think about it again until I saw this post.

Jim - W0EB

> I was asked by John, K0VET, to verify a behavior he observed last
> night
> on his K3.  He was playing with HRD and found that by changing the
> IF
> Shift while transmitting that it took him off frequency.  He
> demonstrated it for me and sure enough, his radio went off frequency
> (1.947 LSB).
>
> I fired up the K3 utility and issuing the following commands, "IS
> 0500;"
> and "IS 1800;" I was able to replicate the behavior on my K3.  As
> soon
> as I stopped transmitting and transmitted again I was back on
> frequency
> even though the shift was still in effect on RX.  So, what I
> surmise is
> that the IF shift is not locked out on the CAT port while
> transmitting.
> Both John and I have the latest 4.22 firmware loaded.  The front
> panel
> Shift control does not exhibit this behavior.
>
> 73, de Nate N0NB >>