[Elecraft] K2 with HRD freq wanders

[Eric]

Dear Don: 

I should have mentioned that the same computer, cable, USB converter works fine with the TS-480 connected to HRD.  I think it must be in the K2.

73

Eric WD6DBM


Sent from my iPhone

On Oct 19, 2009, at 12:14 PM, Don Wilhelm <w3fpr at embarqmail.com> wrote:

Eric,

It really is hard to say what the cause is - there are several possibilities.

It sounds like noise on the cable between the K2 and the computer - which is causing the data *to* the computer to be corrupted.  Since the K2 changes frequency correctly, the path *from* the computer to the K2 is likely ok.
Try a different serial port if possible or a different computer or if you are using one, a different USB to serial converter.

If that does not help, check the negative voltage supply on the KIO2 option.  If the negative voltage to the MAX1406 chip is missing, the signal may not swing low enough to satisfy the receiver in the computer (or USB to serial adapter).

73,
Don W3FPR

Eric wrote:
With my K3 in the Elecraft hospital after a failed suicide attempt (apparently despondent over my lack of attention while recovering from bronchitis), I hooked my K2 up to my computer.  All works fine in HRD but after clicking on a K4M spot, the K2 goes to the right frequency but then random numbers appear slowly, one by one, in the hrd freq display.  If I click on another dx frequency, the k2 goes right there but then the random number cycle starts again.  K2 does not change frequency.  Any ideas?  It didn't do this before.

K2 is fully optioned 10 watt model.  
I LOVE my K3, K2, K1, KX1, XV-144 and thundering herd of mini modules!  I even love my W2, even though we haven't met yet (kinda like how I feel about Sophia Loren).

73 WD6DBM Eric

"the home of Twoer moonbounce" 
Sent from my iPhone
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