Elecraft

K2 Frequency Calibration

Classic

List

Threaded

5 messages Options

Samuel Ramac

K2 Frequency Calibration

Can anyone tell me if this is normal? I tried to calibrate C22 using W1AW
and found the following

W1Aw Freq
1.8175Mhz delta = 0.07 Khz
3.5815 delta = 0.13 Khz
7.0475 delta = 0.30 Khz
14.0475 delta = 0.61 Khz
18.0975 delta = 0.73 Khz

Is the delta at higher frequency higher normal?

I have a K2 S#: 1866. with 2.04P firmware..

- - - - - - - - - - - - - - - - - - - - - - - -
Samuel C. Ramac
[hidden email]

"The heavens declare the Glory of GOD, and the sky shows us His Handiwork"
Psalm 19:1

__o
_'\<,
...(*)/(*)____.

_______________________________________________
Elecraft mailing list
Post to: [hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Ron D'Eau Claire-2

RE: K2 Frequency Calibration

No, that's not "normal", Samuel. You can get frequencies within 20 or 30 Hz
on your K2. For example, my K2 indicates 10.000.01 right now for WWV at 10
MHz. That's an error or 10 Hz.

Two things can cause the error: operating procedure and the calibration of
the 4MHz master oscillator in the K2.

The K2 calibrates the dial readout using the 4 MHz master oscillator on the
control board as the reference for a built-in frequency counter. That's why
the setup procedure for CAL PLL and CAL FIL requires connecting a probe to
the PLL oscillator and BFO. The PLL oscillator frequency is measured when
you run CAL PLL, and the BFO is measured when you do CAL FIL.

There are a number of ways to set the 4 MHz "dead on" without any external
test equipment. They can be found under the "builders resources" section of
the Elecraft web site (www.elecraft.com). See "Notes on Adjusting C22 to put
the K2 on Frequency" under Construction Notes.

Once you have done that your frequency display should be within 20 or 30 Hz
across all the bands.

It does take proper operating procedure, however. The easiest was to be sure
you have a station properly tuned in is to zero beat the carrier with
sidetone in CW mode. An alternative, if you can hear subtle changes in
musical pitch, is to tune in WWV and adjust the tuning for minimum change of
the tone frequency as you switch from USB to LSB.

Both of them should produce an frequency error of a few tens of Hz, not
more.

Ron AC7AC

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Samuel Ramac
Sent: Friday, December 16, 2005 2:52 PM
To: [hidden email]
Subject: [Elecraft] K2 Frequency Calibration

Can anyone tell me if this is normal? I tried to calibrate C22 using W1AW
and found the following

W1Aw Freq
1.8175Mhz delta = 0.07 Khz
3.5815 delta = 0.13 Khz
7.0475 delta = 0.30 Khz
14.0475 delta = 0.61 Khz
18.0975 delta = 0.73 Khz

Is the delta at higher frequency higher normal?

I have a K2 S#: 1866. with 2.04P firmware..

- - - - - - - - - - - - - - - - - - - - - - - -
Samuel C. Ramac
[hidden email]

_______________________________________________
Elecraft mailing list
Post to: [hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Don Wilhelm-3

RE: K2 Frequency Calibration

Samuel,

I can only add to what Ron has already stated that in addition to setting
the reference oscillator correctly then running CAL PLL, you must also run
CAL FIL to store the proper BFO values in the EEPROM.

Take a look at the K2 Dial Calibration article on my website
http://w3fpr.qrprqdio.com for a complete description of the entire process.
The reading is more complex than actually doing the procedure.

73,
Don W3FPR

> -----Original Message-----
> From: [hidden email]
> [mailto:[hidden email]]On Behalf Of Ron D'Eau Claire
> Sent: Friday, December 16, 2005 6:42 PM
> To: 'Samuel Ramac'; [hidden email]
> Subject: RE: [Elecraft] K2 Frequency Calibration
>
>
> No, that's not "normal", Samuel. You can get frequencies within
> 20 or 30 Hz
> on your K2. For example, my K2 indicates 10.000.01 right now for WWV at 10
> MHz. That's an error or 10 Hz.
>
> Two things can cause the error: operating procedure and the calibration of
> the 4MHz master oscillator in the K2.
>
> The K2 calibrates the dial readout using the 4 MHz master
> oscillator on the
> control board as the reference for a built-in frequency counter.
> That's why
> the setup procedure for CAL PLL and CAL FIL requires connecting a probe to
> the PLL oscillator and BFO. The PLL oscillator frequency is measured when
> you run CAL PLL, and the BFO is measured when you do CAL FIL.
>
> There are a number of ways to set the 4 MHz "dead on" without any external
> test equipment. They can be found under the "builders resources"
> section of
> the Elecraft web site (www.elecraft.com). See "Notes on Adjusting
> C22 to put
> the K2 on Frequency" under Construction Notes.
>
> Once you have done that your frequency display should be within
> 20 or 30 Hz
> across all the bands.
>
> It does take proper operating procedure, however. The easiest was
> to be sure
> you have a station properly tuned in is to zero beat the carrier with
> sidetone in CW mode. An alternative, if you can hear subtle changes in
> musical pitch, is to tune in WWV and adjust the tuning for
> minimum change of
> the tone frequency as you switch from USB to LSB.
>
> Both of them should produce an frequency error of a few tens of Hz, not
> more.
>
>
> Ron AC7AC
>
> -----Original Message-----
> From: [hidden email]
> [mailto:[hidden email]] On Behalf Of Samuel Ramac
> Sent: Friday, December 16, 2005 2:52 PM
> To: [hidden email]
> Subject: [Elecraft] K2 Frequency Calibration
>
>
> Can anyone tell me if this is normal? I tried to calibrate C22
> using W1AW
> and found the following
>
> W1Aw Freq
> 1.8175Mhz delta = 0.07 Khz
> 3.5815 delta = 0.13 Khz
> 7.0475 delta = 0.30 Khz
> 14.0475 delta = 0.61 Khz
> 18.0975 delta = 0.73 Khz
>
> Is the delta at higher frequency higher normal?
>
> I have a K2 S#: 1866. with 2.04P firmware..
>
>
> - - - - - - - - - - - - - - - - - - - - - - - -
> Samuel C. Ramac
> [hidden email]
>
>

_______________________________________________
Elecraft mailing list
Post to: [hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Don Wilhelm-3

RE: K2 Frequency Calibration

Folks,

Ron just pointed out that I had a faulty liink to my website - try
http://w3fpr.qrpradio.com instead and excuse my fumble fingers. You can
also find a site mirror at http://home.earthlink.net/~w3fpr - sorry for any
confusion.

73,
Don W3FPR

> -----Original Message-----
>
> Samuel,
>
> I can only add to what Ron has already stated that in addition to
> setting the reference oscillator correctly then running CAL PLL,
> you must also run CAL FIL to store the proper BFO values in the EEPROM.
>
> Take a look at the K2 Dial Calibration article on my website
> http://w3fpr.qrprqdio.com for a complete description of the
> entire process. The reading is more complex than actually doing
> the procedure.
>
> 73,
> Don W3FPR
>
> >

Samuel Ramac

RE: K2 Frequency Calibration

In reply to this post by Samuel Ramac

All,

Thanks for the input. By following the instructions from the inputs I
received, I was able to calibrate K2. I'm all set. Thanks for the help.

Sam
N2MXY

- - - - - - - - - - - - - - - - - - - - - - - -
Samuel C. Ramac
[hidden email]

"The heavens declare the Glory of GOD, and the sky shows us His Handiwork"
Psalm 19:1

__o
_'\<,
...(*)/(*)____.

>From: [hidden email]
>Reply-To: [hidden email]
>To: [hidden email]
>Subject: Elecraft Digest, Vol 20, Issue 16
>Date: Fri, 16 Dec 2005 04:01:13 -0500 (EST)
>
>Send Elecraft mailing list submissions to
> [hidden email]
>
>To subscribe or unsubscribe via the World Wide Web, visit
> http://mailman.qth.net/mailman/listinfo/elecraft
>or, via email, send a message with subject or body 'help' to
> [hidden email]
>
>You can reach the person managing the list at
> [hidden email]
>
>When replying, please edit your Subject line so it is more specific
>than "Re: Contents of Elecraft digest..."

>Today's Topics:
>
> 1. RE: FW: K2/100 SWR accuracy (Dan Barker)
> 2. PBMME Merry Christmas! (Edward R. Breneiser)
> 3. Grab a K6XX CW Indicator WPM+ Option Kit (Edward R. Breneiser)
> 4. WA3WSJ: Need Info about SMD LED Installed in KX1
> (Edward R. Breneiser)
> 5. K1 setback... (Tom Althoff)
> 6. K1 Future Improvements to VFO D3, R17, R18 any one tried??
> (Paul Webb)
> 7. Attaching sides to K2 RF board (jrb)
> 8. RE: Attaching sides to K2 RF board (Don Wilhelm)
> 9. RE: Attaching sides to K2 RF board (Craig Rairdin)
> 10. RE: Attaching sides to K2 RF board (Kevin Shaw)

>From: "Dan Barker" <[hidden email]>
>To: <[hidden email]>
>Subject: RE: [Elecraft] FW: K2/100 SWR accuracy
>Date: Thu, 15 Dec 2005 08:35:37 -0500
>Be sure you are talking Apples and Apples here. There may be an Orange in
>the mix!
>
>The responses you've gotten for calabrating your SWR to match the external
>meters are assuming you are putting your tuner in bypass mode. You didn't
>say that, and may not be doing so. What you said was "press[] TUNE". The K2
>SWR meter will normally read the SWR between the Radio and the Tuner. Your
>external meters will read the SWR between the Tuner and the Antenna.
>
>There may be nothing wrong at all.
>
>Dan / WG4S / K2 #2456
>
><snip>
>You might want to adjust the KPA100's R26 and R27 to agree with your
>external
>meters.
></snip>
>
>
><snip>
> > When SWR is measured using a MFJ 962 tuner, a Daiwa 101N meter, a Bird
> > 43, Autek RF-1, or a MFJ 249 analyzer, the indicated SWR is always
>higher
> > than that shown on the K2.
> >
> > For example, pressing TUNE on the K2 may indicate a 1.0:1, but the other
> > meters all consistently indicate a value significantly higher - lets
> > say 1.4:1
></snip>
>
>

>From: "Edward R. Breneiser" <[hidden email]>
>To: <[hidden email]>
>CC: [hidden email], [hidden email],N3EPA
><[hidden email]>, [hidden email]
>Subject: [Elecraft] PBMME Merry Christmas!
>Date: Thu, 15 Dec 2005 09:49:23 -0500
>Hello all,
>
>I was asked if repeater contacts are ok for the PB Xmas Event.
>Yes, any mode of communication is ok with me.
>If you can use two tin cans and a loooong string, go for it!
>This is meant to be a FUN event. There's only ONE restriction on
>operating as a Polar Bear. You MUST operate from the highest ground in
>your area during this event. No set rules here, just try to get some
>elevation under your feet.
>
>Hope to put you in my Polar Bear Log this Saturday. Don't forget to send
>in those pictures of your Polar Bear Operation.
>
>As always, the first contact I make on Saturday will receive a polar
>bear claw replica with your call sign engraved into it and a hole
>drilled into it so you can put it on your keychain. It looks so COOL!
>
>72,
>Ed, WA3WSJ
>Polar Bear #1
>
>
>

>From: "Edward R. Breneiser" <[hidden email]>
>To: <[hidden email]>
>Subject: [Elecraft] Grab a K6XX CW Indicator WPM+ Option Kit
>Date: Thu, 15 Dec 2005 11:17:46 -0500
>Hello all,
>
>Check out my web page for the
>K6XX CW Indicator LED in the WPM+ button.
>Click on the links for some great install pictures.
>If you want a look go to:
>
>http://www.wa3wsj.com/K6XX/K6XXwpmLED.html
>
>72,
>Ed, WA3WSJ
>
>
>

>From: "Edward R. Breneiser" <[hidden email]>
>To: <[hidden email]>
>Subject: [Elecraft] WA3WSJ: Need Info about SMD LED Installed in KX1
>Date: Thu, 15 Dec 2005 11:24:07 -0500
>Hello all,
>
>Has anyone installed a SMD LED for the K6XX CW Indicator in a KX1?
>If so, could you send me some info about your install and a few pics
>to put on my website for others to see.
>
>72,
>Ed, WA3WSJ
>
>
>

>From: "Tom Althoff" <[hidden email]>
>To: "Elecraft" <[hidden email]>
>Subject: [Elecraft] K1 setback...
>Date: Thu, 15 Dec 2005 14:55:50 -0500
>Well...my tilt stand and backlight kit arrived today which I ordered AFTER
>I had ordered my K1 and some parts to repair my K2/100/AT.
>
>My disappointment? For some reason the order for the K1 and the K2
>replacement parts did NOT get shipped out last Friday as originally
>planned. 8-(
>
>They are going to do it today. Hopefully they'll have it overnighted for
>delivery tomorrow or Saturday at the latest. In the mean time I added the
>auto-tuner to the order.
>
>I assembled the tilt stand a few minutes ago. I suppose having looked at
>the photo on the Elecraft website so many times that showed the long
>support arms in place I was pleasantly surprised that "wide range" meant
>there were another pair of shorter support bars that just tilt the radio up
>to a normal viewing angle when placed on the desktop. I assembled the
>EC-1 project enclosure and mounted it on the tilt stand just to get an idea
>of how I want to operate.
>
>I plan on building a long-life battery pack into the EC-1 and perhaps set
>the K2 on top of it instead of using the tilt stand.
>
>So I am QRT unless those K2 parts and the K1 arrive in time for the
>weekend. Oh well. Time to make up some fused power cables for mobile and
>portable operation of my K2.
>
>Tom K2TA
>K2 #1117
>K1 #????
>
>

>From: "Paul Webb" <[hidden email]>
>To: <[hidden email]>
>Subject: [Elecraft] K1 Future Improvements to VFO D3, R17, R18 any one
>tried??
>Date: Thu, 15 Dec 2005 23:06:09 -0000
>Hi Gang
>
>Just reading page 59 of the K1 manual and it talks about provisions for
>improvements to the VFO temperature compensation
>
>And the use of D3, R17 and R18.
>
>Anyone tried this out and done any before and after tests.
>
>I would be most interested to see if it made any difference, if no one as
>tried it anyone know a reason why not to try it or I will
>
>Have a play
>
>
>
>All the best
>
>Paul
>
>M0BMN
>
>
>

>From: jrb <[hidden email]>
>To: [hidden email]
>Subject: [Elecraft] Attaching sides to K2 RF board
>Date: Thu, 15 Dec 2005 17:08:16 -0800
>Hello All and Merry Xmas
>
>Can't figure out where I went wrong here. Attached two 2-D fasteners to
>one bare area and one
>"unbare" area as per locations pictured on page 38. Yet when I went to
>attach the sides to the RF
>board, the only holes that fit are the "bare" ones, one of which I've
>attached a 2-D fastener to.
>
>Have I confused left with right sides and attached the fasteners to one of
>the bare areas in error?
>i.e. do the formerly masked areas go on the bottom, not the top?
>
>Sorry to be so dense, but the manual is really unclear here, unless the
>stippled areas in the figures are the
>bare areas.
>
>TIA
>
>Jeff
>
>KG6ZVT
>

>From: "Don Wilhelm" <[hidden email]>
>Reply-To: [hidden email]
>To: "jrb" <[hidden email]>, <[hidden email]>
>Subject: RE: [Elecraft] Attaching sides to K2 RF board
>Date: Thu, 15 Dec 2005 20:43:57 -0500
>Jeff,
>
>Yes, the long rectangular bare area (previously masked) will go at the
>bottom. The other mouning holes may (or may not be) masked, but if masked
>they will be short rectangular areas.
>
>Remove the 2D connector from the bare area, then look at the diagrams
>carefully.
>The words in the paragraph above the diagrams use the 'bare areas' only as
>an indicator that the panels are oriented correctly - and is shown as the
>long rectangular light shaded area in the diagrams - the 2D connectors are
>to be positioned as shown by the dark shaded areas, there will be one at
>the
>top corner (above the bare area) and the other will be at the back -
>centered vertically.
>
>The 2D connectors that are already fitted to the RF Board will attach to
>the
>bare area when you get everything together.
>
>73,
>Don W3FPR
>
> > -----Original Message-----
> >
> > Can't figure out where I went wrong here. Attached two 2-D fasteners
> > to one bare area and one
> > "unbare" area as per locations pictured on page 38. Yet when I went
> > to attach the sides to the RF
> > board, the only holes that fit are the "bare" ones, one of which I've
> > attached a 2-D fastener to.
> >
> > Have I confused left with right sides and attached the fasteners to
> > one of the bare areas in error?
> > i.e. do the formerly masked areas go on the bottom, not the top?
> >
> > Sorry to be so dense, but the manual is really unclear here, unless
> > the stippled areas in the figures are the
> > bare areas.
> >
> >
>
>

>From: "Craig Rairdin" <[hidden email]>
>To: "'Elecraft Reflector'" <[hidden email]>,<[hidden email]>
>Subject: RE: [Elecraft] Attaching sides to K2 RF board
>Date: Thu, 15 Dec 2005 19:42:46 -0600
>Take a look at the pictures at my Web site and see if that helps:
>
>http://www.craigr.com/coppermine/thumbnails.php?album=32
>
>There's one picture for each page in the manual, generally taken at the end
>of the tasks for that page. The one for page 39 looks like it might help.
>
>Craig
>NZ0R
>K1 #1966
>K2/100 #4941
>
>
>-----Original Message-----
>From: [hidden email]
>[mailto:[hidden email]] On Behalf Of jrb
>Sent: Thursday, December 15, 2005 7:08 PM
>To: [hidden email]
>Subject: [Elecraft] Attaching sides to K2 RF board
>
>
>Hello All and Merry Xmas
>
>Can't figure out where I went wrong here. Attached two 2-D fasteners
>to one bare area and one
>"unbare" area as per locations pictured on page 38. Yet when I went
>to attach the sides to the RF
>board, the only holes that fit are the "bare" ones, one of which I've
>attached a 2-D fastener to.
>
>Have I confused left with right sides and attached the fasteners to
>one of the bare areas in error?
>i.e. do the formerly masked areas go on the bottom, not the top?
>
>Sorry to be so dense, but the manual is really unclear here, unless
>the stippled areas in the figures are the
>bare areas.
>
>TIA
>
>Jeff
>
>KG6ZVT
>_______________________________________________
>Elecraft mailing list
>Post to: [hidden email]
>You must be a subscriber to post to the list.
>Subscriber Info (Addr. Change, sub, unsub etc.):
> http://mailman.qth.net/mailman/listinfo/elecraft
>
>Help: http://mailman.qth.net/subscribers.htm
>Elecraft web page: http://www.elecraft.com
>
>

>From: "Kevin Shaw" <[hidden email]>
>To: <[hidden email]>
>CC: 'jrb' <[hidden email]>
>Subject: RE: [Elecraft] Attaching sides to K2 RF board
>Date: Thu, 15 Dec 2005 20:47:13 -0500
>Hi Jeff,
>
>I'm about 10 pages ahead of you in building my K2.
>
>Sounds like you have the 2-D fasteners in the wrong spot(s). If you have
>the
>side (left or right) laying on the table with the inside surface facing up
>and the two "bare" areas toward you, the 2-D fasteners attach to the holes
>at the top left (or right) corner and the right (or left) side.
>
>I hope this makes sense. If not, let me know and I'll send you a picture.
>
>Kevin
>N8IQ\4
>
>
>-----Original Message-----
>From: [hidden email]
>[mailto:[hidden email]] On Behalf Of jrb
>Sent: Thursday, December 15, 2005 8:08 PM
>To: [hidden email]
>Subject: [Elecraft] Attaching sides to K2 RF board
>
>Hello All and Merry Xmas
>
>Can't figure out where I went wrong here. Attached two 2-D fasteners
>to one bare area and one
>"unbare" area as per locations pictured on page 38. Yet when I went
>to attach the sides to the RF
>board, the only holes that fit are the "bare" ones, one of which I've
>attached a 2-D fastener to.
>
>Have I confused left with right sides and attached the fasteners to
>one of the bare areas in error?
>i.e. do the formerly masked areas go on the bottom, not the top?
>
>Sorry to be so dense, but the manual is really unclear here, unless
>the stippled areas in the figures are the
>bare areas.
>
>TIA
>
>Jeff
>
>KG6ZVT
>_______________________________________________
>Elecraft mailing list
>Post to: [hidden email]
>You must be a subscriber to post to the list.
>Subscriber Info (Addr. Change, sub, unsub etc.):
> http://mailman.qth.net/mailman/listinfo/elecraft
>
>Help: http://mailman.qth.net/subscribers.htm
>Elecraft web page: http://www.elecraft.com
>
>
>

>_______________________________________________
>Elecraft mailing list
>Post to: [hidden email]
>http://mailman.qth.net/mailman/listinfo/elecraft
>You must be a subscriber to post.
>Elecraft web page: http://www.elecraft.com

_______________________________________________
Elecraft mailing list
Post to: [hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com