Elecraft

K60XV Problem

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Harvey Howell

K60XV Problem

Hello everyone. I installed a 60 meter board last night and it seems to have a problem. When I entered 5000 kHz I had what sounds like a loud oscillator sound on the audio. I turned on another radio and had WWV loud and clear at 5000 kHz in that radio. When I increase the frequency the oscillator sound goes away (maybe just beyond my hearing) and I hear a very faint sw station at 5070 kHz. Between 5070 kHz and 5300 kHz I can't hear the buzz saw and I adjusted the trimmers for max power out. I'm not getting any error messages on the display. So far I haven't found any visible assembly errors. Has anyone had this problem before? Any ideas what might be bad? On a previous K2 I built with this option I heard WWV right away at 5000 kHz. Thanks very much.

Harvey KN6VP
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Don Wilhelm-3

RE: K60XV Problem

Harvey,

Re-check the VCO range (voltage on the left end of R30), and be certain all
the ands fall within the proper range. It is normal for the VCO voltage to
become so small below 5300 kHz that the tuning will not continue on down to
5000 Hz. Also the response of the bandpass filter may fall off quite a bit
at 5000 Hz which will reduce the ability to hear at that frequency.

I cannot speak to your 'buzz-saw' - you will have to be more specific.

73,
Don W3FPR

> -----Original Message-----
> From: [hidden email]
> [mailto:[hidden email]]On Behalf Of Harvey Howell
> Sent: Tuesday, May 30, 2006 9:53 AM
> To: [hidden email]
> Subject: [Elecraft] K60XV Problem
>
>
> Hello everyone. I installed a 60 meter board last night and it
> seems to have a problem. When I entered 5000 kHz I had what
> sounds like a loud oscillator sound on the audio. I turned on
> another radio and had WWV loud and clear at 5000 kHz in that
> radio. When I increase the frequency the oscillator sound goes
> away (maybe just beyond my hearing) and I hear a very faint sw
> station at 5070 kHz. Between 5070 kHz and 5300 kHz I can't hear
> the buzz saw and I adjusted the trimmers for max power out. I'm
> not getting any error messages on the display. So far I haven't
> found any visible assembly errors. Has anyone had this problem
> before? Any ideas what might be bad? On a previous K2 I built
> with this option I heard WWV right away at 5000 kHz. Thanks very much.
>
> Harvey KN6VP

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Harvey Howell

Re: K60XV Problem

Thanks Don. I think the VCO voltage is too low at 5000kHz. At 5300 kHz it
reads 1.084 vdc on my Fluke 179. I will have to go back to the adjustment
routine in the K2 manual and see if I can shift all the voltages enough. On
my previous K2 it worked great at 5000kHz. The buzz saw sound to me is like
hearing some internally generated low frequency and nothing else. The
frequency changes a little bit when I attach the DMM lead to R30. Thanks for
your help.

Harvey KN6VP
----- Original Message -----
From: "Don Wilhelm" <[hidden email]>
To: "Harvey Howell" <[hidden email]>;
<[hidden email]>
Sent: Tuesday, May 30, 2006 7:23 AM
Subject: RE: [Elecraft] K60XV Problem

> Harvey,
>
> Re-check the VCO range (voltage on the left end of R30), and be certain
> all
> the ands fall within the proper range. It is normal for the VCO voltage
> to
> become so small below 5300 kHz that the tuning will not continue on down
> to
> 5000 Hz. Also the response of the bandpass filter may fall off quite a
> bit
> at 5000 Hz which will reduce the ability to hear at that frequency.
>
> I cannot speak to your 'buzz-saw' - you will have to be more specific.
>
> 73,
> Don W3FPR
>
>
>> -----Original Message-----
>> From: [hidden email]
>> [mailto:[hidden email]]On Behalf Of Harvey Howell
>> Sent: Tuesday, May 30, 2006 9:53 AM
>> To: [hidden email]
>> Subject: [Elecraft] K60XV Problem
>>
>>
>> Hello everyone. I installed a 60 meter board last night and it
>> seems to have a problem. When I entered 5000 kHz I had what
>> sounds like a loud oscillator sound on the audio. I turned on
>> another radio and had WWV loud and clear at 5000 kHz in that
>> radio. When I increase the frequency the oscillator sound goes
>> away (maybe just beyond my hearing) and I hear a very faint sw
>> station at 5070 kHz. Between 5070 kHz and 5300 kHz I can't hear
>> the buzz saw and I adjusted the trimmers for max power out. I'm
>> not getting any error messages on the display. So far I haven't
>> found any visible assembly errors. Has anyone had this problem
>> before? Any ideas what might be bad? On a previous K2 I built
>> with this option I heard WWV right away at 5000 kHz. Thanks very much.
>>
>> Harvey KN6VP
>
>
>
> --
> No virus found in this incoming message.
> Checked by AVG Free Edition.
> Version: 7.1.394 / Virus Database: 268.7.4/351 - Release Date: 5/29/2006
>
>

Sjoerd-8

RE: K60XV Problem

Did you change the D19 parameter?

Just my 1st thought...

Good luck!

Sjoerd
PE2SVN

-----Oorspronkelijk bericht-----
Van: [hidden email]
[mailto:[hidden email]] Namens Harvey Howell
Verzonden: dinsdag 30 mei 2006 22:33
Aan: [hidden email]; [hidden email]
Onderwerp: Re: [Elecraft] K60XV Problem

Thanks Don. I think the VCO voltage is too low at 5000kHz. At 5300 kHz it
reads 1.084 vdc on my Fluke 179. I will have to go back to the adjustment
routine in the K2 manual and see if I can shift all the voltages enough. On
my previous K2 it worked great at 5000kHz. The buzz saw sound to me is like
hearing some internally generated low frequency and nothing else. The
frequency changes a little bit when I attach the DMM lead to R30. Thanks for

your help.

Harvey KN6VP
----- Original Message -----
From: "Don Wilhelm" <[hidden email]>
To: "Harvey Howell" <[hidden email]>;
<[hidden email]>
Sent: Tuesday, May 30, 2006 7:23 AM
Subject: RE: [Elecraft] K60XV Problem

--
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.1.394 / Virus Database: 268.7.4/351 - Release Date: 5/29/2006

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Mark Bayern-2

Re: K60XV Problem

In reply to this post by Harvey Howell

Harvey,

I found that I could adjust the VCO voltage to keep the VCO in lock at
5MHz -- however, I have yet to copy WWV at 5MHz. And, I did get that
'buzz saw' sound when the VCO is not in lock. Good luck -- if you
find you can copy WWV at 5M, please let me know about it.

Mark

On 5/30/06, Harvey Howell <[hidden email]> wrote:

> Thanks Don. I think the VCO voltage is too low at 5000kHz. At 5300 kHz it
> reads 1.084 vdc on my Fluke 179. I will have to go back to the adjustment
> routine in the K2 manual and see if I can shift all the voltages enough. On
> my previous K2 it worked great at 5000kHz. The buzz saw sound to me is like
> hearing some internally generated low frequency and nothing else. The
> frequency changes a little bit when I attach the DMM lead to R30. Thanks for
> your help.
>
> Harvey KN6VP
> ----- Original Message -----
> From: "Don Wilhelm" <[hidden email]>
> To: "Harvey Howell" <[hidden email]>;
> <[hidden email]>
> Sent: Tuesday, May 30, 2006 7:23 AM
> Subject: RE: [Elecraft] K60XV Problem
>
>
> > Harvey,
> >
> > Re-check the VCO range (voltage on the left end of R30), and be certain
> > all
> > the ands fall within the proper range. It is normal for the VCO voltage
> > to
> > become so small below 5300 kHz that the tuning will not continue on down
> > to
> > 5000 Hz. Also the response of the bandpass filter may fall off quite a
> > bit
> > at 5000 Hz which will reduce the ability to hear at that frequency.
> >
> > I cannot speak to your 'buzz-saw' - you will have to be more specific.
> >
> > 73,
> > Don W3FPR
> >
> >
> >> -----Original Message-----
> >> From: [hidden email]
> >> [mailto:[hidden email]]On Behalf Of Harvey Howell
> >> Sent: Tuesday, May 30, 2006 9:53 AM
> >> To: [hidden email]
> >> Subject: [Elecraft] K60XV Problem
> >>
> >>
> >> Hello everyone. I installed a 60 meter board last night and it
> >> seems to have a problem. When I entered 5000 kHz I had what
> >> sounds like a loud oscillator sound on the audio. I turned on
> >> another radio and had WWV loud and clear at 5000 kHz in that
> >> radio. When I increase the frequency the oscillator sound goes
> >> away (maybe just beyond my hearing) and I hear a very faint sw
> >> station at 5070 kHz. Between 5070 kHz and 5300 kHz I can't hear
> >> the buzz saw and I adjusted the trimmers for max power out. I'm
> >> not getting any error messages on the display. So far I haven't
> >> found any visible assembly errors. Has anyone had this problem
> >> before? Any ideas what might be bad? On a previous K2 I built
> >> with this option I heard WWV right away at 5000 kHz. Thanks very much.
> >>
> >> Harvey KN6VP
> >
> >
> >
> > --
> > No virus found in this incoming message.
> > Checked by AVG Free Edition.
> > Version: 7.1.394 / Virus Database: 268.7.4/351 - Release Date: 5/29/2006
> >
> >
>
>
>
> --
> No virus found in this outgoing message.
> Checked by AVG Free Edition.
> Version: 7.1.394 / Virus Database: 268.7.4/351 - Release Date: 5/29/2006
>
> _______________________________________________
> 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
>

Harvey Howell

Re: K60XV Problem

In reply to this post by Sjoerd-8

Yes, thanks Sjoerd.

Harvey KN6VP
----- Original Message -----
From: "Sjoerd" <[hidden email]>
To: <[hidden email]>
Sent: Tuesday, May 30, 2006 1:44 PM
Subject: RE: [Elecraft] K60XV Problem

> Did you change the D19 parameter?
>
> Just my 1st thought...
>
>
> Good luck!
>
> Sjoerd
> PE2SVN
>
> -----Oorspronkelijk bericht-----
> Van: [hidden email]
> [mailto:[hidden email]] Namens Harvey Howell
> Verzonden: dinsdag 30 mei 2006 22:33
> Aan: [hidden email]; [hidden email]
> Onderwerp: Re: [Elecraft] K60XV Problem
>
> Thanks Don. I think the VCO voltage is too low at 5000kHz. At 5300 kHz it
> reads 1.084 vdc on my Fluke 179. I will have to go back to the adjustment
> routine in the K2 manual and see if I can shift all the voltages enough.
> On
> my previous K2 it worked great at 5000kHz. The buzz saw sound to me is
> like
> hearing some internally generated low frequency and nothing else. The
> frequency changes a little bit when I attach the DMM lead to R30. Thanks
> for
>
> your help.
>
> Harvey KN6VP
> ----- Original Message -----
> From: "Don Wilhelm" <[hidden email]>
> To: "Harvey Howell" <[hidden email]>;
> <[hidden email]>
> Sent: Tuesday, May 30, 2006 7:23 AM
> Subject: RE: [Elecraft] K60XV Problem
>
>
>> Harvey,
>>
>> Re-check the VCO range (voltage on the left end of R30), and be certain
>> all
>> the ands fall within the proper range. It is normal for the VCO voltage
>> to
>> become so small below 5300 kHz that the tuning will not continue on down
>> to
>> 5000 Hz. Also the response of the bandpass filter may fall off quite a
>> bit
>> at 5000 Hz which will reduce the ability to hear at that frequency.
>>
>> I cannot speak to your 'buzz-saw' - you will have to be more specific.
>>
>> 73,
>> Don W3FPR
>>
>>
>>> -----Original Message-----
>>> From: [hidden email]
>>> [mailto:[hidden email]]On Behalf Of Harvey Howell
>>> Sent: Tuesday, May 30, 2006 9:53 AM
>>> To: [hidden email]
>>> Subject: [Elecraft] K60XV Problem
>>>
>>>
>>> Hello everyone. I installed a 60 meter board last night and it
>>> seems to have a problem. When I entered 5000 kHz I had what
>>> sounds like a loud oscillator sound on the audio. I turned on
>>> another radio and had WWV loud and clear at 5000 kHz in that
>>> radio. When I increase the frequency the oscillator sound goes
>>> away (maybe just beyond my hearing) and I hear a very faint sw
>>> station at 5070 kHz. Between 5070 kHz and 5300 kHz I can't hear
>>> the buzz saw and I adjusted the trimmers for max power out. I'm
>>> not getting any error messages on the display. So far I haven't
>>> found any visible assembly errors. Has anyone had this problem
>>> before? Any ideas what might be bad? On a previous K2 I built
>>> with this option I heard WWV right away at 5000 kHz. Thanks very much.
>>>
>>> Harvey KN6VP
>>
>>
>>
>> --
>> No virus found in this incoming message.
>> Checked by AVG Free Edition.
>> Version: 7.1.394 / Virus Database: 268.7.4/351 - Release Date: 5/29/2006
>>
>>
>
>
>
> --
> No virus found in this outgoing message.
> Checked by AVG Free Edition.
> Version: 7.1.394 / Virus Database: 268.7.4/351 - Release Date: 5/29/2006
>
> _______________________________________________
> 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]
> 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
>
>
> --
> No virus found in this incoming message.
> Checked by AVG Free Edition.
> Version: 7.1.394 / Virus Database: 268.7.4/351 - Release Date: 5/29/2006
>
>

Harvey Howell

Re: K60XV Problem

In reply to this post by Mark Bayern-2

Thanks Mark. My other K2, S/N 5022 receives WWV on 5000 kHz real good. This
one is S/N 5404. Last night I tuned my Sony 2010 receiver to 5000 kHz and it
almost pegged the meter...the path just happened to be open. I'll let you
know if I am able to get this rig to do it.

Harvey KN6VP
----- Original Message -----
From: "Mark Bayern" <[hidden email]>
To: "Harvey Howell" <[hidden email]>
Cc: <[hidden email]>; <[hidden email]>
Sent: Tuesday, May 30, 2006 2:11 PM
Subject: Re: [Elecraft] K60XV Problem

> Harvey,
>
> I found that I could adjust the VCO voltage to keep the VCO in lock at
> 5MHz -- however, I have yet to copy WWV at 5MHz. And, I did get that
> 'buzz saw' sound when the VCO is not in lock. Good luck -- if you
> find you can copy WWV at 5M, please let me know about it.
>
> Mark
>
>
>
> On 5/30/06, Harvey Howell <[hidden email]> wrote:
>> Thanks Don. I think the VCO voltage is too low at 5000kHz. At 5300 kHz
>> it
>> reads 1.084 vdc on my Fluke 179. I will have to go back to the adjustment
>> routine in the K2 manual and see if I can shift all the voltages enough.
>> On
>> my previous K2 it worked great at 5000kHz. The buzz saw sound to me is
>> like
>> hearing some internally generated low frequency and nothing else. The
>> frequency changes a little bit when I attach the DMM lead to R30. Thanks
>> for
>> your help.
>>
>> Harvey KN6VP
>> ----- Original Message -----
>> From: "Don Wilhelm" <[hidden email]>
>> To: "Harvey Howell" <[hidden email]>;
>> <[hidden email]>
>> Sent: Tuesday, May 30, 2006 7:23 AM
>> Subject: RE: [Elecraft] K60XV Problem
>>
>>
>> > Harvey,
>> >
>> > Re-check the VCO range (voltage on the left end of R30), and be certain
>> > all
>> > the ands fall within the proper range. It is normal for the VCO
>> > voltage
>> > to
>> > become so small below 5300 kHz that the tuning will not continue on
>> > down
>> > to
>> > 5000 Hz. Also the response of the bandpass filter may fall off quite a
>> > bit
>> > at 5000 Hz which will reduce the ability to hear at that frequency.
>> >
>> > I cannot speak to your 'buzz-saw' - you will have to be more specific.
>> >
>> > 73,
>> > Don W3FPR
>> >
>> >
>> >> -----Original Message-----
>> >> From: [hidden email]
>> >> [mailto:[hidden email]]On Behalf Of Harvey Howell
>> >> Sent: Tuesday, May 30, 2006 9:53 AM
>> >> To: [hidden email]
>> >> Subject: [Elecraft] K60XV Problem
>> >>
>> >>
>> >> Hello everyone. I installed a 60 meter board last night and it
>> >> seems to have a problem. When I entered 5000 kHz I had what
>> >> sounds like a loud oscillator sound on the audio. I turned on
>> >> another radio and had WWV loud and clear at 5000 kHz in that
>> >> radio. When I increase the frequency the oscillator sound goes
>> >> away (maybe just beyond my hearing) and I hear a very faint sw
>> >> station at 5070 kHz. Between 5070 kHz and 5300 kHz I can't hear
>> >> the buzz saw and I adjusted the trimmers for max power out. I'm
>> >> not getting any error messages on the display. So far I haven't
>> >> found any visible assembly errors. Has anyone had this problem
>> >> before? Any ideas what might be bad? On a previous K2 I built
>> >> with this option I heard WWV right away at 5000 kHz. Thanks very much.
>> >>
>> >> Harvey KN6VP
>> >
>> >
>> >
>> > --
>> > No virus found in this incoming message.
>> > Checked by AVG Free Edition.
>> > Version: 7.1.394 / Virus Database: 268.7.4/351 - Release Date:
>> > 5/29/2006
>> >
>> >
>>
>>
>>
>> --
>> No virus found in this outgoing message.
>> Checked by AVG Free Edition.
>> Version: 7.1.394 / Virus Database: 268.7.4/351 - Release Date: 5/29/2006
>>
>> _______________________________________________
>> 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
>>
>
>
> --
> No virus found in this incoming message.
> Checked by AVG Free Edition.
> Version: 7.1.394 / Virus Database: 268.7.4/351 - Release Date: 5/29/2006
>
>

Harvey Howell

Re: K60XV Problem

In reply to this post by Don Wilhelm-3

Don, I adjusted the VCO range and ended up with 0.551 vdc at 5000 kHz on the
meter and I can now receive WWV at 5000 kHz. Apparently thats enough voltage
to work. What I did was adjust L30 so the voltage at 4000 kHz went from 6.52
vdc to 7.35 vdc. All voltages are between 2.715 vdc and 7.350 vdc on the
meter.

Harvey KN6VP
----- Original Message -----
From: "Don Wilhelm" <[hidden email]>
To: "Harvey Howell" <[hidden email]>;
<[hidden email]>
Sent: Tuesday, May 30, 2006 7:23 AM
Subject: RE: [Elecraft] K60XV Problem

--
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.1.394 / Virus Database: 268.8.0/352 - Release Date: 5/30/2006

_______________________________________________
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Post to: [hidden email]
You must be a subscriber to post to the list.
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