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K2 power on frequency problem

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John Oppenheimer

K2 power on frequency problem

I am a new K2 (#7212) user. I have been baffled by what I thought was my
inability to properly perform the frequency alignments. My last attempt
was to perform a factory reset and re-do PLL and BFO (Table 8-1 values)
calibrations.

I believe that I have found the issue, sometimes it appears that the VFO
frequency offset look-up tables are not used and a toggle through two
"CW REV" changes are needed.

Used a K3 CWT SPOT as a 4MHz monitor to adjust C22.

Using a K3, CWT, SPOT and K2 in in TUNE (with dummy load) to measure the
K2's frequency. Test process is:

Note: only the events in the below text were performed.

Power off K2 with F set to 7026.00
Power on: K2 F=7026.00 K3 F = 7026.146
"CW REV" "CW REV", K3 F = 7026.018
Power off K2
Power on K2 F=7026.00, K3 F = 7026.025
Power off K2
Power on K2, Move K2 F to 7027.00, K3 F = 2027.028
Power off K2
Power on K2 F = 7027.00, K3 F = 2027.145
"CW REV" "CW REV", K3 F = 7027.000

I was listening to the audio during the above process. There was a
notable change in the resulting pass-band audio when the "CW REV" "CW
REV" toggle was performed and the K2 frequency changed. Leading me to
believe that the VFO offset frequency was changed.

Though I can't find a reproducible process, I have found events where
during a K2 power on session, sometimes a "CW REV" "CW REV" is needed to
acquire correct K2 frequency.

Is this normal K2 operation, or do I have an issue with this K2?

John, KN5L
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Don Wilhelm-4

Re: K2 power on frequency problem

John,

You are reporting a shift of 128 Hz in one case, and 117 Hz in another
case. The difference between the two is close to 20 Hz which is the K2
BFO DAC limit, so that is not surprising, particularly if the BFO
voltage to the DAC is right on the "edge".

Yet, I do not understand what approximately 120 Hz has to do with CW or
CWr - unless you have the K2 sitting close to an AC transformer, sine
120 Hz is twice the 60 Hz line frequency and the shift is coming from
the VFO.

You may have some inconsistency in addressing the EEPROM. If that is
the case, it will be cured by a Master Reset - BUT record all your menu
settings before doing the reset and restore them afterwards. The K2 A
to B Instructions contain nice tables for recording the menu values, and
I encourage you to download those instructions to record the menu
parameters.

I would suggest you use the N6KR method to set the 4 MHz reference - the
precise setting may be slightly different than exactly 4 MHz, and the
N6KR method erases any variables other than your ability to tune WWV (or
any other "standard" station) with precision in SSB mode.
For the full K2 Dial Calibration procedure, see the article dealing with
that subject on my website www.w3fpr.com. If you only want to set the 4
MHz reference using the N6KR method and then run CAL PLL and CAL FIL,
you can refer to Wayne's document from the Elecraft reflector archives
of 8/20/03.

Remember, setting the 4 MHz Reference Oscillator by itself does nothing
to the dial calibration, one must run CAL PLL and CAL FIL to set the new
values (based on the new setting of the Reference) into EEPROM before
any chance in tuning is made.

73,
Don W3FPR

On 9/3/2011 9:24 AM, John Oppenheimer wrote:

> I am a new K2 (#7212) user. I have been baffled by what I thought was my
> inability to properly perform the frequency alignments. My last attempt
> was to perform a factory reset and re-do PLL and BFO (Table 8-1 values)
> calibrations.
>
> I believe that I have found the issue, sometimes it appears that the VFO
> frequency offset look-up tables are not used and a toggle through two
> "CW REV" changes are needed.
>
> Used a K3 CWT SPOT as a 4MHz monitor to adjust C22.
>
> Using a K3, CWT, SPOT and K2 in in TUNE (with dummy load) to measure the
> K2's frequency. Test process is:
>
> Note: only the events in the below text were performed.
>
> Power off K2 with F set to 7026.00
> Power on: K2 F=7026.00 K3 F = 7026.146
> "CW REV" "CW REV", K3 F = 7026.018
> Power off K2
> Power on K2 F=7026.00, K3 F = 7026.025
> Power off K2
> Power on K2, Move K2 F to 7027.00, K3 F = 2027.028
> Power off K2
> Power on K2 F = 7027.00, K3 F = 2027.145
> "CW REV" "CW REV", K3 F = 7027.000
>
> I was listening to the audio during the above process. There was a
> notable change in the resulting pass-band audio when the "CW REV" "CW
> REV" toggle was performed and the K2 frequency changed. Leading me to
> believe that the VFO offset frequency was changed.
>
> Though I can't find a reproducible process, I have found events where
> during a K2 power on session, sometimes a "CW REV" "CW REV" is needed to
> acquire correct K2 frequency.
>
> Is this normal K2 operation, or do I have an issue with this K2?
>
> John, KN5L
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>

______________________________________________________________
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Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

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wreese

Re: K2 power on frequency problem

Don,

This is my problem. I have 120Hz drift. I have been unable to
correct it and I sent my K2 to you and others without results. Let
me give you an example.

I come into the shack in the morning, it is about 65 degrees. I turn
on the rig. The display says 7000.004 Khz. I hit the band button and
shift to 10Mhz WWV. I hit the "zero beat" button and it gives me a
matching tone. I zero the main tuning knob, and it verifies that WWV
reads out at 10000.004 Khz

Now, I do nothing.

I go back to 7000.004 Khz and I tune around the band looking for a
CQ. If I don't find one in about 1/2 hour I go back to 10Mhz
WWV. It now zeros at -3Hz ie. 9999.997 Khz.

I adjust the zero on 40 meters to read 6999.997 KHz.

Now I get lucky. I find a CQ, I crank up the power to 100 Watts and
I call him. I'm not fooling around, we do a real rag chew and we
talk for perhaps 30 minutes. As I notice him drifting, and my
experience tells me that it isn't him drifting, it's me, I use the
tone zero beat and I adjust the main tuning knob to maintain zero
beat with my QSO. He stops drifting when my dial reads 7043.993
KHz. Now the QSO ends and my K2 has stabilized. I return to 10MHz
WWV and my dial reads 9999.993 KHz.

Thanks,

K6GC, TR
K2/100 S/N 838
________________

At 05:07 PM 9/4/2011 -0400, Don Wilhelm wrote:

>John,
>
>You are reporting a shift of 128 Hz in one case, and 117 Hz in another
>case. The difference between the two is close to 20 Hz which is the K2
>BFO DAC limit, so that is not surprising, particularly if the BFO
>voltage to the DAC is right on the "edge".
>
>Yet, I do not understand what approximately 120 Hz has to do with CW or
>CWr - unless you have the K2 sitting close to an AC transformer, sine
>120 Hz is twice the 60 Hz line frequency and the shift is coming from
>the VFO.
>
>You may have some inconsistency in addressing the EEPROM. If that is
>the case, it will be cured by a Master Reset - BUT record all your menu
>settings before doing the reset and restore them afterwards. The K2 A
>to B Instructions contain nice tables for recording the menu values, and
>I encourage you to download those instructions to record the menu
>parameters.
>
>I would suggest you use the N6KR method to set the 4 MHz reference - the
>precise setting may be slightly different than exactly 4 MHz, and the
>N6KR method erases any variables other than your ability to tune WWV (or
>any other "standard" station) with precision in SSB mode.
>For the full K2 Dial Calibration procedure, see the article dealing with
>that subject on my website www.w3fpr.com. If you only want to set the 4
>MHz reference using the N6KR method and then run CAL PLL and CAL FIL,
>you can refer to Wayne's document from the Elecraft reflector archives
>of 8/20/03.
>
>Remember, setting the 4 MHz Reference Oscillator by itself does nothing
>to the dial calibration, one must run CAL PLL and CAL FIL to set the new
>values (based on the new setting of the Reference) into EEPROM before
>any chance in tuning is made.
>
>73,
>Don W3FPR
>
>On 9/3/2011 9:24 AM, John Oppenheimer wrote:
> > I am a new K2 (#7212) user. I have been baffled by what I thought was my
> > inability to properly perform the frequency alignments. My last attempt
> > was to perform a factory reset and re-do PLL and BFO (Table 8-1 values)
> > calibrations.
> >
> > I believe that I have found the issue, sometimes it appears that the VFO
> > frequency offset look-up tables are not used and a toggle through two
> > "CW REV" changes are needed.
> >
> > Used a K3 CWT SPOT as a 4MHz monitor to adjust C22.
> >
> > Using a K3, CWT, SPOT and K2 in in TUNE (with dummy load) to measure the
> > K2's frequency. Test process is:
> >
> > Note: only the events in the below text were performed.
> >
> > Power off K2 with F set to 7026.00
> > Power on: K2 F=7026.00 K3 F = 7026.146
> > "CW REV" "CW REV", K3 F = 7026.018
> > Power off K2
> > Power on K2 F=7026.00, K3 F = 7026.025
> > Power off K2
> > Power on K2, Move K2 F to 7027.00, K3 F = 2027.028
> > Power off K2
> > Power on K2 F = 7027.00, K3 F = 2027.145
> > "CW REV" "CW REV", K3 F = 7027.000
> >
> > I was listening to the audio during the above process. There was a
> > notable change in the resulting pass-band audio when the "CW REV" "CW
> > REV" toggle was performed and the K2 frequency changed. Leading me to
> > believe that the VFO offset frequency was changed.
> >
> > Though I can't find a reproducible process, I have found events where
> > during a K2 power on session, sometimes a "CW REV" "CW REV" is needed to
> > acquire correct K2 frequency.
> >
> > Is this normal K2 operation, or do I have an issue with this K2?
> >
> > John, KN5L
> > ______________________________________________________________
> > Elecraft mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:[hidden email]
> >
> > This list hosted by: http://www.qsl.net
> > Please help support this email list: http://www.qsl.net/donate.html
> >
>______________________________________________________________
>Elecraft mailing list
>Home: http://mailman.qth.net/mailman/listinfo/elecraft
>Help: http://mailman.qth.net/mmfaq.htm
>Post: mailto:[hidden email]
>
>This list hosted by: http://www.qsl.net
>Please help support this email list: http://www.qsl.net/donate.html

Don Wilhelm-4

Re: K2 power on frequency problem

TR,

What are you measuring the drift with? The K2 dial shows only 2 decimal
digits, so you can only read 7000.00 and not 7000.004 on the display.

Drifting from 10000.004 to 9999.997 is only 7 Hz drift, and well within
the K2 specifications.
If you really mean 70 Hz drift (and you have inserted an extra zero
after the decimal), then please provide that correction. Even 70 Hz is
within the cold start spec for the K2.

In addition, you are starting from a cold start - the K2 specification
is for less than 100 Hz from a cold start, so if your cold start drift
is actually 70 Hz, it is well within spec.
After warmup, the spec drift should be less than 30 Hz. to be within
spec. Most are more stable than that. The 1/4 watt resistor on the
Thermistor board can be altered to tighten this drift spec, but it takes
some experimentation. I would not recommend trying to alter the
resistor to reduce the cold start drift because that could result in the
normal operating drift to be worse.

Please let your K2 warm up for at least 5 minutes and re-check the drift
with respect to WWV (choose the interval that you want to use for the
test, and do at least 3 samples over time and average them).

It would seem that the original poster in this thread had a problem
different than drift.

73,
Don W3FPR

On 9/4/2011 9:24 PM, wreese wrote:

> Don,
>
> This is my problem. I have 120Hz drift. I have been unable to
> correct it and I sent my K2 to you and others without results. Let
> me give you an example.
>
> I come into the shack in the morning, it is about 65 degrees. I turn
> on the rig. The display says 7000.004 Khz. I hit the band button and
> shift to 10Mhz WWV. I hit the "zero beat" button and it gives me a
> matching tone. I zero the main tuning knob, and it verifies that WWV
> reads out at 10000.004 Khz
>
> Now, I do nothing.
>
> I go back to 7000.004 Khz and I tune around the band looking for a
> CQ. If I don't find one in about 1/2 hour I go back to 10Mhz
> WWV. It now zeros at -3Hz ie. 9999.997 Khz.
>
> I adjust the zero on 40 meters to read 6999.997 KHz.
>
> Now I get lucky. I find a CQ, I crank up the power to 100 Watts and
> I call him. I'm not fooling around, we do a real rag chew and we
> talk for perhaps 30 minutes. As I notice him drifting, and my
> experience tells me that it isn't him drifting, it's me, I use the
> tone zero beat and I adjust the main tuning knob to maintain zero
> beat with my QSO. He stops drifting when my dial reads 7043.993
> KHz. Now the QSO ends and my K2 has stabilized. I return to 10MHz
> WWV and my dial reads 9999.993 KHz.
>
> Thanks,
>
> K6GC, TR
> K2/100 S/N 838
> ________________
>
> At 05:07 PM 9/4/2011 -0400, Don Wilhelm wrote:
>> John,
>>
>> You are reporting a shift of 128 Hz in one case, and 117 Hz in another
>> case. The difference between the two is close to 20 Hz which is the K2
>> BFO DAC limit, so that is not surprising, particularly if the BFO
>> voltage to the DAC is right on the "edge".
>>
>> Yet, I do not understand what approximately 120 Hz has to do with CW or
>> CWr - unless you have the K2 sitting close to an AC transformer, sine
>> 120 Hz is twice the 60 Hz line frequency and the shift is coming from
>> the VFO.
>>
>> You may have some inconsistency in addressing the EEPROM. If that is
>> the case, it will be cured by a Master Reset - BUT record all your menu
>> settings before doing the reset and restore them afterwards. The K2 A
>> to B Instructions contain nice tables for recording the menu values, and
>> I encourage you to download those instructions to record the menu
>> parameters.
>>
>> I would suggest you use the N6KR method to set the 4 MHz reference - the
>> precise setting may be slightly different than exactly 4 MHz, and the
>> N6KR method erases any variables other than your ability to tune WWV (or
>> any other "standard" station) with precision in SSB mode.
>> For the full K2 Dial Calibration procedure, see the article dealing with
>> that subject on my website www.w3fpr.com. If you only want to set the 4
>> MHz reference using the N6KR method and then run CAL PLL and CAL FIL,
>> you can refer to Wayne's document from the Elecraft reflector archives
>> of 8/20/03.
>>
>> Remember, setting the 4 MHz Reference Oscillator by itself does nothing
>> to the dial calibration, one must run CAL PLL and CAL FIL to set the new
>> values (based on the new setting of the Reference) into EEPROM before
>> any chance in tuning is made.
>>
>> 73,
>> Don W3FPR
>>
>> On 9/3/2011 9:24 AM, John Oppenheimer wrote:
>>> I am a new K2 (#7212) user. I have been baffled by what I thought was my
>>> inability to properly perform the frequency alignments. My last attempt
>>> was to perform a factory reset and re-do PLL and BFO (Table 8-1 values)
>>> calibrations.
>>>
>>> I believe that I have found the issue, sometimes it appears that the VFO
>>> frequency offset look-up tables are not used and a toggle through two
>>> "CW REV" changes are needed.
>>>
>>> Used a K3 CWT SPOT as a 4MHz monitor to adjust C22.
>>>
>>> Using a K3, CWT, SPOT and K2 in in TUNE (with dummy load) to measure the
>>> K2's frequency. Test process is:
>>>
>>> Note: only the events in the below text were performed.
>>>
>>> Power off K2 with F set to 7026.00
>>> Power on: K2 F=7026.00 K3 F = 7026.146
>>> "CW REV" "CW REV", K3 F = 7026.018
>>> Power off K2
>>> Power on K2 F=7026.00, K3 F = 7026.025
>>> Power off K2
>>> Power on K2, Move K2 F to 7027.00, K3 F = 2027.028
>>> Power off K2
>>> Power on K2 F = 7027.00, K3 F = 2027.145
>>> "CW REV" "CW REV", K3 F = 7027.000
>>>
>>> I was listening to the audio during the above process. There was a
>>> notable change in the resulting pass-band audio when the "CW REV" "CW
>>> REV" toggle was performed and the K2 frequency changed. Leading me to
>>> believe that the VFO offset frequency was changed.
>>>
>>> Though I can't find a reproducible process, I have found events where
>>> during a K2 power on session, sometimes a "CW REV" "CW REV" is needed to
>>> acquire correct K2 frequency.
>>>
>>> Is this normal K2 operation, or do I have an issue with this K2?
>>>
>>> John, KN5L
>>> ______________________________________________________________
>>> Elecraft mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>> Help: http://mailman.qth.net/mmfaq.htm
>>> Post: mailto:[hidden email]
>>>
>>> This list hosted by: http://www.qsl.net
>>> Please help support this email list: http://www.qsl.net/donate.html
>>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>

wreese

Re: K2 power on frequency problem

Don,

As usual, you are right! I am in your debt.

What can I say? My apologies for taking up bandwidth on the reflector.

You are correct, the K2 has only 2 decimal digits, and yes my drift
is only 70 Hz. I am downstairs with my laptop and my memory is
imperfect, the K2 is upstairs where I can't see it.

Now that you have corrected me, I recall (after it is too late) that
you have given my this advice before. I owe you an apology! Please
forgive me.

BTW, thanks for helping me many times over the years; you did not
deserve this sort of discussion.

TR, K6GC
K2/100 S/N 838

At 10:22 PM 9/4/2011 -0400, Don Wilhelm wrote:

>TR,
>
>What are you measuring the drift with? The K2 dial shows only 2
>decimal digits, so you can only read 7000.00 and not 7000.004 on the display.
>
>Drifting from 10000.004 to 9999.997 is only 7 Hz drift, and well
>within the K2 specifications.
>If you really mean 70 Hz drift (and you have inserted an extra zero
>after the decimal), then please provide that correction. Even 70 Hz
>is within the cold start spec for the K2.
>
>In addition, you are starting from a cold start - the K2
>specification is for less than 100 Hz from a cold start, so if your
>cold start drift is actually 70 Hz, it is well within spec.
>After warmup, the spec drift should be less than 30 Hz. to be within
>spec. Most are more stable than that. The 1/4 watt resistor on the
>Thermistor board can be altered to tighten this drift spec, but it
>takes some experimentation. I would not recommend trying to alter
>the resistor to reduce the cold start drift because that could
>result in the normal operating drift to be worse.
>
>Please let your K2 warm up for at least 5 minutes and re-check the
>drift with respect to WWV (choose the interval that you want to use
>for the test, and do at least 3 samples over time and average them).
>
>It would seem that the original poster in this thread had a problem
>different than drift.
>
>73,
>Don W3FPR
>
>On 9/4/2011 9:24 PM, wreese wrote:
>>Don,
>>
>>This is my problem. I have 120Hz drift. I have been unable to
>>correct it and I sent my K2 to you and others without results. Let
>>me give you an example.
>>
>>I come into the shack in the morning, it is about 65 degrees. I turn
>>on the rig. The display says 7000.004 Khz. I hit the band button and
>>shift to 10Mhz WWV. I hit the "zero beat" button and it gives me a
>>matching tone. I zero the main tuning knob, and it verifies that WWV
>>reads out at 10000.004 Khz
>>
>>Now, I do nothing.
>>
>>I go back to 7000.004 Khz and I tune around the band looking for a
>>CQ. If I don't find one in about 1/2 hour I go back to 10Mhz
>>WWV. It now zeros at -3Hz ie. 9999.997 Khz.
>>
>>I adjust the zero on 40 meters to read 6999.997 KHz.
>>
>>Now I get lucky. I find a CQ, I crank up the power to 100 Watts and
>>I call him. I'm not fooling around, we do a real rag chew and we
>>talk for perhaps 30 minutes. As I notice him drifting, and my
>>experience tells me that it isn't him drifting, it's me, I use the
>>tone zero beat and I adjust the main tuning knob to maintain zero
>>beat with my QSO. He stops drifting when my dial reads 7043.993
>>KHz. Now the QSO ends and my K2 has stabilized. I return to 10MHz
>>WWV and my dial reads 9999.993 KHz.
>>
>>Thanks,
>>
>>K6GC, TR
>>K2/100 S/N 838
>>________________
>>
>>At 05:07 PM 9/4/2011 -0400, Don Wilhelm wrote:
>>>John,
>>>
>>>You are reporting a shift of 128 Hz in one case, and 117 Hz in another
>>>case. The difference between the two is close to 20 Hz which is the K2
>>>BFO DAC limit, so that is not surprising, particularly if the BFO
>>>voltage to the DAC is right on the "edge".
>>>
>>>Yet, I do not understand what approximately 120 Hz has to do with CW or
>>>CWr - unless you have the K2 sitting close to an AC transformer, sine
>>>120 Hz is twice the 60 Hz line frequency and the shift is coming from
>>>the VFO.
>>>
>>>You may have some inconsistency in addressing the EEPROM. If that is
>>>the case, it will be cured by a Master Reset - BUT record all your menu
>>>settings before doing the reset and restore them afterwards. The K2 A
>>>to B Instructions contain nice tables for recording the menu values, and
>>>I encourage you to download those instructions to record the menu
>>>parameters.
>>>
>>>I would suggest you use the N6KR method to set the 4 MHz reference - the
>>>precise setting may be slightly different than exactly 4 MHz, and the
>>>N6KR method erases any variables other than your ability to tune WWV (or
>>>any other "standard" station) with precision in SSB mode.
>>>For the full K2 Dial Calibration procedure, see the article dealing with
>>>that subject on my website www.w3fpr.com. If you only want to set the 4
>>>MHz reference using the N6KR method and then run CAL PLL and CAL FIL,
>>>you can refer to Wayne's document from the Elecraft reflector archives
>>>of 8/20/03.
>>>
>>>Remember, setting the 4 MHz Reference Oscillator by itself does nothing
>>>to the dial calibration, one must run CAL PLL and CAL FIL to set the new
>>>values (based on the new setting of the Reference) into EEPROM before
>>>any chance in tuning is made.
>>>
>>>73,
>>>Don W3FPR
>>>
>>>On 9/3/2011 9:24 AM, John Oppenheimer wrote:
>>>>I am a new K2 (#7212) user. I have been baffled by what I thought was my
>>>>inability to properly perform the frequency alignments. My last attempt
>>>>was to perform a factory reset and re-do PLL and BFO (Table 8-1 values)
>>>>calibrations.
>>>>
>>>>I believe that I have found the issue, sometimes it appears that the VFO
>>>>frequency offset look-up tables are not used and a toggle through two
>>>>"CW REV" changes are needed.
>>>>
>>>>Used a K3 CWT SPOT as a 4MHz monitor to adjust C22.
>>>>
>>>>Using a K3, CWT, SPOT and K2 in in TUNE (with dummy load) to measure the
>>>>K2's frequency. Test process is:
>>>>
>>>>Note: only the events in the below text were performed.
>>>>
>>>>Power off K2 with F set to 7026.00
>>>>Power on: K2 F=7026.00 K3 F = 7026.146
>>>>"CW REV" "CW REV", K3 F = 7026.018
>>>>Power off K2
>>>>Power on K2 F=7026.00, K3 F = 7026.025
>>>>Power off K2
>>>>Power on K2, Move K2 F to 7027.00, K3 F = 2027.028
>>>>Power off K2
>>>>Power on K2 F = 7027.00, K3 F = 2027.145
>>>>"CW REV" "CW REV", K3 F = 7027.000
>>>>
>>>>I was listening to the audio during the above process. There was a
>>>>notable change in the resulting pass-band audio when the "CW REV" "CW
>>>>REV" toggle was performed and the K2 frequency changed. Leading me to
>>>>believe that the VFO offset frequency was changed.
>>>>
>>>>Though I can't find a reproducible process, I have found events where
>>>>during a K2 power on session, sometimes a "CW REV" "CW REV" is needed to
>>>>acquire correct K2 frequency.
>>>>
>>>>Is this normal K2 operation, or do I have an issue with this K2?
>>>>
>>>>John, KN5L
>>>>______________________________________________________________
>>>>Elecraft mailing list
>>>>Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>>>Help: http://mailman.qth.net/mmfaq.htm
>>>>Post: mailto:[hidden email]
>>>>
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