[Elecraft] [K2] Two questions

[Don Wilhelm]

Randy,

As you discovered, the selected antenna (and  frequency, and mode) may 
be lost over a power cycle UNLESS you do a band change.  So if you want 
these states recorded after changing them on a particular band, do a 
band change before powering off.

On the 'static clash', check the T-R delay setting and also make sure 
you have 8R HOLD turned on.

73,
Don W3FPR

On 10/9/2014 2:46 PM, Randy Moore wrote:
> Just installed the 160m module in a friend's K2 and made a couple of 
> observations.
>
> 1.  I assume this is working as designed (and has nothing to do with 
> installing the 160m module), but I found that the antenna setting 
> (ANT1/ANT2 from the KAT2 that was already in the radio) is not always 
> remembered over a power cycle.  It looks like it is saved if I switch 
> bands after setting the antenna and then doing a power cycle, but 
> otherwise it reverts to the previous setting.  My K2 does the same 
> thing, so I don't think its anything about my fiend's K2. So what are 
> the rules about saving ANT1/ANT2 over a power cycle?  Both K2's are 
> running the same firmware (2.04).
>
> 2. This one may be a problem.  I was testing the 160m module.  At 
> power settings below around 8w, all is well.  Above 8w, after sending 
> a few characters of CW then stopping, there's about a 0.5s delay and 
> then there's a crash of static that also lasts about 0.5s.  This is 
> definitely in sync with my transmission and not atmospheric in nature. 
> I checked the power supply voltage under load (from the K2's voltage 
> readout) and around the 8w level, it was running around 12.2 volts. 
> This was from a battery.  I changed to my regular power supply, which 
> the K2 shows as about 12.6v under the 8w load, and the static crash 
> goes away.  What would cause this behavior with source voltage near 
> 12v, and is there something I can do about it in the K2?