XG50 warmup after initial run

[Mooneer Salem]

Hi all,

I ordered the XG50 along with my KX3 and finally got around to soldering
the former. It's currently doing the recommended 8 hour initial run. If I
were to turn it off after the eight hours and turn it on later for the
actual extended calibration procedure, is there any required warmup? The
documentation for the procedure didn't seem clear on that.

Thanks,

-Mooneer
______________________________________________________________
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

[N0AZZ]

I have wondered the same thing since I built mine, still haven't used it yet
as mine was an "F" unit and not very old.

Fred/N0AZZ

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Mooneer Salem
Sent: Friday, February 15, 2013 1:39 AM
To: [hidden email]
Subject: [Elecraft] XG50 warmup after initial run

Hi all,

I ordered the XG50 along with my KX3 and finally got around to soldering
the former. It's currently doing the recommended 8 hour initial run. If I
were to turn it off after the eight hours and turn it on later for the
actual extended calibration procedure, is there any required warmup? The
documentation for the procedure didn't seem clear on that.

Thanks,

-Mooneer
______________________________________________________________
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

[ke9uw]

I thought I read that you only had to do that once.

Chuck, KE9UW
Lionel Trains, TCA, LCCA, LRRC
aka Jack, BMW Motorcycles BMWMOA #224

________________________________________
From: [hidden email] [[hidden email]] on behalf of Fred Smith [[hidden email]]
Sent: Friday, February 15, 2013 3:48 AM
To: 'Mooneer Salem'; [hidden email]
Subject: Re: [Elecraft] XG50 warmup after initial run

I have wondered the same thing since I built mine, still haven't used it yet
as mine was an "F" unit and not very old.

Fred/N0AZZ

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Mooneer Salem
Sent: Friday, February 15, 2013 1:39 AM
To: [hidden email]
Subject: [Elecraft] XG50 warmup after initial run

Hi all,

I ordered the XG50 along with my KX3 and finally got around to soldering
the former. It's currently doing the recommended 8 hour initial run. If I
were to turn it off after the eight hours and turn it on later for the
actual extended calibration procedure, is there any required warmup? The
documentation for the procedure didn't seem clear on that.

Thanks,

-Mooneer
______________________________________________________________
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

[Paul Saffren N6HZ]

You only have to perform the long (8 hr) "burn in" once.  After that you can use the XG50 as outlined in the temperature compensation procedure.  When performing the procedure, be sure to place the XG50 in an area free from temperature swings, moving air, etc.  Doing so will ensure a stable signal and provide a better compensation table within the KX3.


73,

Paul

[Mooneer Salem]

Assuming the 8 hour run has been done, it sounds like I can turn on the
XG50 right when I start the procedure. Thanks for the clarification. :)

-Mooneer KG6AOV


On Fri, Feb 15, 2013 at 9:00 AM, Paul Saffren N6HZ <[hidden email]>wrote:

> You only have to perform the long (8 hr) "burn in" once.  After that you
> can
> use the XG50 as outlined in the temperature compensation procedure.  When
> performing the procedure, be sure to place the XG50 in an area free from
> temperature swings, moving air, etc.  Doing so will ensure a stable signal
> and provide a better compensation table within the KX3.
>
>
> 73,
>
> Paul
>
>
>
>
> --
> View this message in context:
> http://elecraft.365791.n2.nabble.com/XG50-warmup-after-initial-run-tp7569965p7569969.html
> Sent from the Elecraft mailing list archive at Nabble.com.
> ______________________________________________________________
> 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]

Mooneer,

I would not go so far as to say that.  Any stable signal generator needs
some warmup time.  For instance my HP8640B is very stable - but only
after about a 2 hour warmup period.  Everything inside has to come up to
operating temperature, and it drifts until that occurs.
I would suggest at least a 15 minute warmup for the XG50, a half hour
would be better.  At least I would be more comfortable with an
assumption like that even if it is overkill.

I believe the 8 hour 'burn in' is a time to allow the XG50 crystal some
'run time'.  New crystals will typically exhibit some initial change in
frequency that does not re-occur - think of it similar to the 'break-in'
period for a new engine - you don't have to repeat that every time you
start the car, but you do have to let it warm up before it will deliver
peak performance.

73,
Don W3FPR

On 2/15/2013 7:53 PM, Mooneer Salem wrote:
> Assuming the 8 hour run has been done, it sounds like I can turn on the
> XG50 right when I start the procedure. Thanks for the clarification. :)
>

______________________________________________________________
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

[Mooneer Salem]

Don,

Makes sense. I actually went ahead and did the temperature compensation
procedure tonight. I let the XG50 warm up while the KX3 was warming up (~30
minutes), then performed the procedure. Cooling down for a bit after, I
noticed that the tone now varies by +/- 3 Hz, much better than
pre-procedure. Pretty good for using a hotel mini-fridge that only cooled
the radio down to 19C. :) Thanks all for the advice.

73,

-Mooneer KG6AOV


On Fri, Feb 15, 2013 at 5:15 PM, Don Wilhelm <[hidden email]> wrote:

> Mooneer,
>
> I would not go so far as to say that.  Any stable signal generator needs
> some warmup time.  For instance my HP8640B is very stable - but only after
> about a 2 hour warmup period.  Everything inside has to come up to
> operating temperature, and it drifts until that occurs.
> I would suggest at least a 15 minute warmup for the XG50, a half hour
> would be better.  At least I would be more comfortable with an assumption
> like that even if it is overkill.
>
> I believe the 8 hour 'burn in' is a time to allow the XG50 crystal some
> 'run time'.  New crystals will typically exhibit some initial change in
> frequency that does not re-occur - think of it similar to the 'break-in'
> period for a new engine - you don't have to repeat that every time you
> start the car, but you do have to let it warm up before it will deliver
> peak performance.
>
> 73,
> Don W3FPR
>
>
> On 2/15/2013 7:53 PM, Mooneer Salem wrote:
>
>> Assuming the 8 hour run has been done, it sounds like I can turn on the
>> XG50 right when I start the procedure. Thanks for the clarification. :)
>>
>>
>

______________________________________________________________
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