OK, thanks, Don. As I said, I went into this perfectly happy with how
the K2 is performing. I have SN 6911 right beside it and find no
discernible difference between the two. Both are solid. I just wanted to
verify the alignment after 13 years of use and refamiliarize myself with
the internals.
Eric KE6US
On 4/19/2018 9:32 PM, Don Wilhelm wrote:
Erik,
Your K2 has the A to B updates, do NOT put X2 in!
For Firmware level 2.01 and above, CAL PLL is done only on 40 meters
(for all bands). If attempted on other bands, you will get an INFO
232 error.
Use the information in the newer manual - the older manual has
information *only* applicable to K2s that have not been upgraded.
73,
Don W3FPR
On 4/19/2018 10:18 PM, EricJ wrote:
I have K2 SN 567. I didn't really have a problem with it, but I
bought it used in 2005, had W3FPR look at it then, and install latest
mods to bring it up to date. Today, I thought it might be time to
take a look at alignment, and freshen it up a bit.
When I did the "PLL Ref Osc Range Test" in Alignment Part II, the
range was slightly less than 6 kHz. When I got to "VFO
Linearization", 40 meters was fine without any INFO messages.
I was using the original Rev B manual (not related to RevB board)
that came with it. Under Part III, Alignment and Test there is
another "VFO Linearization (All Bands)". I did that and every band
failed (INFO 232) except 40 meters. And of course, in the Rev B
manual, there is no INFO 232 only 235. Anyway, I checked around Q19
as the Troubleshooting suggested and found X1, but no X2. After
reading the circuit operation, I was convinced somehow X2 got left
out. Since it was supposed to be there to prevent the very short
range problem I thought I was experiencing, I thought I had found the
problem.
I emailed Elecraft to order X2, and got a nice note from Mike saying
they would send one out no charge. That kind of service still amazes
me. But I told him to hold off until I can hear from this group.
I checked my other K2 manual (I also have SN 6911), and, first, it
does not have a procedure for VFO linearization on anything but 40
meters. In fact, it says INFO 232 probably occurred because I wasn't
on 40m. And the parts lists says X2 is not used!
I went into this without having any actual problem or complaint. The
old manual convinced me I did. The later Rev I manual says I might,
but didn't know it. I'm supposed to have a PLL range of 9.8 to 15
kHz. I have 5.97 kHz.
So if that is a problem, the problem is associated with Q19 which is
a very simple stage. X1 is probably the most likely cause. Any ideas?
Also, since two crystals were originally used to "de-Q one another to
increase the tuning range", what was done to make two crystals
unnecessary?
Thanks for any help,
Eric KE6US
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to donw...@embarqmail.com
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com
