Bill,
Maybe it's a hardware problem:
The connector from frontpanel to main rf board for example?
When the temp is low, maybe there are some bad contacts. Take off the
front panel and clean all pins of the connections. Do this thouroughly,
polish all four sides of each connector-pin.
73
Arie PA3A
K3 #1255
Op 21-10-2016 om 1:50 schreef Bill Coleman:
Thanks Don. I put on 5.54.... The K3 is behaving differently.... No
more jumping down 1MHz.
What it is doing now: there's still a relay clicking once in a while as I
tune VFO A - this is within any given ham band.
Now, while tuning VFO A, VFO B will jump frequency.
Example:
VFO A = 3.853, press A>B, tune A up frequency less than a kHz, B jumps, now
A = 3.853 B = 3.994
Somewhat similar but stranger behavior on 40M
VFO A = 7.274, press A>B, tune A up freq, B jumps a LOT, now A=7.275 B =
8.600
In the time it has taken to test and scribble the results, the rig has
warmed up from 50F to 66F and it works fine No freq jumps, no relay
clatter.
OK, I went back to Firmware 5.52 & chilled the rig (53F). The jumping
1MHz down is back. Hmmm... Next step? I'm thing the FP flash memory has
a problem with low temps.
THX, Bill N2BC
-----Original Message-----
From: Don Wilhelm [mailto:donw...@embarqmail.com]
Sent: Thursday, October 20, 2016 10:51 AM
To: Bill Coleman; Elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 Freq jumpnig when cold (50F or so)
Bill,
Try loading beta firmware 5.54 to that K3 and see if that behavior
continues.
That firmware improves the flash memory interface.
I can't say for sure if it will fix that K3, but is worth a try.
73,
Don W3FPR
On 10/20/2016 10:16 AM, Bill Coleman wrote:
Have our club's K3/100, serial # 67xx. When it is cold (FP=11C 52F ),
increasing the frequency using VFO A or VFO B causes a 1MHz jump DOWN
in frequency. When reducing frequency the failure is much less
frequent and it will also jump down 1 MHz. At times while tuning up
in freq there are some relay clicks - usually 2 - but no frequency jumps.
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