Jim -
Your thoughts helped in narrowing the question. The A=B switch does
function - so I pulled the rig apart and looked all around the rate
switch for any possible solder joint problem but saw none. For good
measure thought I reheated/soldered the 4 mounting posts for the
switch. I also checked continuity on the bottom side of the switch. In
normal position each pair of top and bottom solder points show
continuity. If I depress the switch and check continuity then the
diagonal point also shows continuity. Alas, the rate switch and lock
still do not function. I shall await with anticipation the words of Gary
the Great One tomorrow :-) The nice thing about electronics is that one
way or another it all boils down to something being "on" or "off" - ie
anything is solvable. Sure am enjoying building this K2 with a 4000+
serial number. My first was in the early 2000's and did not have all the
mods nicely built in to the kit! Thanks for the input Jim.
73/Tim NZ7C
James T. "Jim" Rogers, W4ATK wrote:
Tim, I think the rig defaults to PRE ON. The only bands where I routinely do
not use the preamp are 40 sometimes, 80, and 160. The rate switch is one of
the switches "read" by U2 on the control panel. Look for a cold solder joint
there. Rate and A=B/SPLIT share the same pull up resistor on RP1 so if
A=B/SPLIT does its thing the the trouble is around the rate switch. The
switch data is returned to the MCU serially so the fact that all the other
switches are working excludes U2 and the serial path to the MCU.
Jim, W4ATK
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Tim Logan
Sent: Tuesday, January 18, 2005 7:21 PM
To: Elec-Reflector
Subject: [Elecraft] K2 problem at page 43 of Rev. F manual - need some
help
Hi folks -
I will confess I just sent Gary a query about this, but you know how it
goes when it is after working hours and you would sorta' like to solve
the problem tonight hi hi! Anyway, if someone truly in the know can shed
insight on either of the following this evening I would be most
appreciative.
I am at the stage where the K2 is pluged in for the first time (my
favorite part!!!). All tests up to the 2nd column of page 43 have passed
(ie up to the paragraph titled RF PROBE ASSEMBLY). Bands, change, menus
seem to work, voltage display works, VFO works. PF! & 2 work etc.
HOWEVER two problems have appeared. Before I go through every trouble
shooting step in the manual maybe someone has been there done that already?
1 - The PRE annunciator is turned on for all bands - even after a reset
to factory defaults. The PRE/ATT switch works and activates relays. If I
go through each band and turn off the PRE and then turn the K2 off and
on again, the bands WILL retain the status of having the PRE turned off.
However, I do not understand why it defaulted to being turned on from
the factory settings. Can you point me in the right direction to
understand this?
2 - The RATE switch does not change rates. I checked the secondary menu
and the basic 3 rate default is set. Can you suggest where I start to
solve this issue?
Thanks in advance for any help.
73/ Tim Logan NZ7C
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