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KX2 on JT65 & JT9 ??

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VA3MA

KX2 on JT65 & JT9 ??

Has anyone had the opportunity to see if the KX2 out of the box will be stable enough to run JT65 & JT9
Would appreciate feedback as I’m apartment dweller and only run these digital modes with compromised antenna
Thanks
Dan VA3MA
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Phil Wheeler-2

Re: KX2 on JT65 & JT9 ??

One of the eham reviewers mentioned using the KX2
on JT65: http://www.eham.net/reviews/detail/12852

The N9JR review.

Phil W7OX

On 5/29/16 12:40 PM, Dan - VA3MA wrote:
> Has anyone had the opportunity to see if the KX2 out of the box will be stable enough to run JT65 & JT9
> Would appreciate feedback as I’m apartment dweller and only run these digital modes with compromised antenna
> Thanks
> Dan VA3MA

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Michael Walker

Re: KX2 on JT65 & JT9 ??

I don't believe that JT65 frequency stability at HF frequencies will be an
issue.

The documents say that the JT65 bandwidth is pretty generous.

I've run JT65 on my Softrock without issue.

Mike va3mw

On Sun, May 29, 2016 at 3:46 PM, Phil Wheeler <[hidden email]> wrote:

> One of the eham reviewers mentioned using the KX2 on JT65:
> http://www.eham.net/reviews/detail/12852
>
> The N9JR review.
>
> Phil W7OX
>
>
>
> On 5/29/16 12:40 PM, Dan - VA3MA wrote:
>
>> Has anyone had the opportunity to see if the KX2 out of the box will be
>> stable enough to run JT65 & JT9
>> Would appreciate feedback as I’m apartment dweller and only run these
>> digital modes with compromised antenna
>> Thanks
>> Dan VA3MA
>>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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>
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> Message delivered to [hidden email]
>

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VA3MA

Re: KX2 on JT65 & JT9 ??

In reply to this post by Phil Wheeler-2

Hi thanks
I’ve read all these c comments by others - but I have yet to get a direct confirmation from someone who has operated the KX2 enthuse digital modes!
Ha!
Dan

> On May 29, 2016, at 3:46 PM, Phil Wheeler <[hidden email]> wrote:
>
> One of the eham reviewers mentioned using the KX2 on JT65: http://www.eham.net/reviews/detail/12852
>
> The N9JR review.
>
> Phil W7OX
>
>
> On 5/29/16 12:40 PM, Dan - VA3MA wrote:
>> Has anyone had the opportunity to see if the KX2 out of the box will be stable enough to run JT65 & JT9
>> Would appreciate feedback as I’m apartment dweller and only run these digital modes with compromised antenna
>> Thanks
>> Dan VA3MA
>

Michael Walker

Re: KX2 on JT65 & JT9 ??

Dan

Issues with not being able to communicate with JT65 have nothing to do with
frequency stability. It has to do with just not being heard. :)

Like all other digital modes, you require Transmit and Receive Audio and a
PTT line.

I would be very very very surprised that a KX2 can't handle JT65. JT65 is
does not require a super stable transmitter. In fact, when they use it off
the moon, there is significant doppler going on.

Mike va3mw

On Sun, May 29, 2016 at 4:22 PM, Dan - VA3MA <[hidden email]> wrote:

> Hi thanks
> I’ve read all these c comments by others - but I have yet to get a direct
> confirmation from someone who has operated the KX2 enthuse digital modes!
> Ha!
> Dan
>
> > On May 29, 2016, at 3:46 PM, Phil Wheeler <[hidden email]> wrote:
> >
> > One of the eham reviewers mentioned using the KX2 on JT65:
> http://www.eham.net/reviews/detail/12852
> >
> > The N9JR review.
> >
> > Phil W7OX
> >
> >
> > On 5/29/16 12:40 PM, Dan - VA3MA wrote:
> >> Has anyone had the opportunity to see if the KX2 out of the box will be
> stable enough to run JT65 & JT9
> >> Would appreciate feedback as I’m apartment dweller and only run these
> digital modes with compromised antenna
> >> Thanks
> >> Dan VA3MA
> >
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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Michael Walker

Re: KX2 on JT65 & JT9 ??

I have run JT65 on my KX3 at 5 watts without issue other than not having
enough RF signal.

Mike va3mw

On Sun, May 29, 2016 at 4:37 PM, Dan Howard <[hidden email]> wrote:

> Mike
> The KX3 wil not work JT modes due to freq drift due to heat - one must do
> the temperature compensation procedure in order to get the KX3
> freq stable…
> I’m hoping that the KX2 does not need ‘fiddling’ in a cooler ! HIHI
> 73
> Dan
>
> > On May 29, 2016, at 4:33 PM, Michael Walker <[hidden email]>
> wrote:
> >
> > Dan
> >
> > Issues with not being able to communicate with JT65 have nothing to do
> with
> > frequency stability. It has to do with just not being heard. :)
> >
> > Like all other digital modes, you require Transmit and Receive Audio and
> a
> > PTT line.
> >
> > I would be very very very surprised that a KX2 can't handle JT65. JT65
> is
> > does not require a super stable transmitter. In fact, when they use it
> off
> > the moon, there is significant doppler going on.
> >
> > Mike va3mw
> >
> >
> > On Sun, May 29, 2016 at 4:22 PM, Dan - VA3MA <[hidden email]> wrote:
> >
> >> Hi thanks
> >> I’ve read all these c comments by others - but I have yet to get a
> direct
> >> confirmation from someone who has operated the KX2 enthuse digital
> modes!
> >> Ha!
> >> Dan
> >>
> >>> On May 29, 2016, at 3:46 PM, Phil Wheeler <[hidden email]> wrote:
> >>>
> >>> One of the eham reviewers mentioned using the KX2 on JT65:
> >> http://www.eham.net/reviews/detail/12852
> >>>
> >>> The N9JR review.
> >>>
> >>> Phil W7OX
> >>>
> >>>
> >>> On 5/29/16 12:40 PM, Dan - VA3MA wrote:
> >>>> Has anyone had the opportunity to see if the KX2 out of the box will
> be
> >> stable enough to run JT65 & JT9
> >>>> Would appreciate feedback as I’m apartment dweller and only run these
> >> digital modes with compromised antenna
> >>>> Thanks
> >>>> Dan VA3MA
> >>>
> >>
> >> ______________________________________________________________
> >> 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
> >> Message delivered to [hidden email]
> >>
> > ______________________________________________________________
> > Elecraft mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
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> > Post: mailto:[hidden email]
> >
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> > Message delivered to [hidden email]
>
>

Josh Fiden

Re: KX2 on JT65 & JT9 ??

In reply to this post by Michael Walker

Yes, but... the earth & moon don't do anything abrupt.

73,
Josh W6XU

On 5/29/2016 1:33 PM, Michael Walker wrote:
> ...does not require a super stable transmitter. In fact, when they use it off
> the moon, there is significant doppler going on.

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Elecraft mailing list

Re: KX2 on JT65 & JT9 ??

In reply to this post by Phil Wheeler-2

Michael Walker

Re: KX2 on JT65 & JT9 ??

The moon bounces around and causes some pretty good doppler.

Good thing that JT65-HF also has AFC built in.

http://www.packetradio.com/pdfzips/jt65-hf-setup.pdf

*AFC enables automatic frequency control and will attempt to follow a
signal that exhibits drift. Its original intent is to compensate for
Doppler shift when using JT65 for EME contacts, but it has application on
HF as well. Not for Doppler shift compensation, but for stations who show
VFO drift.*

The biggest problem is clock drift, not RF drift.

Regardless, the beta testers claimed the did JT65 without issue.

Mike va3mw

On Sun, May 29, 2016 at 8:51 PM, Luke via Elecraft <[hidden email]
> wrote:

>
> ______________________________________________________________
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Tony Estep

Re: KX2 on JT65 & JT9 ??

In reply to this post by Michael Walker

>
>
> Issues with not being able to communicate with JT65 have nothing to do with
> frequency stability....

===========
Actually, frequency stability is the key issue with JT65. The transmit
frequency can not drift more than about 8 hz during transmission, or the
receiving station will probably not be able to copy. It was this exact
issue that led to the development of the temp compensation scheme for the
KX3. The point of the original question was to determine whether or not the
KX2 needs such a compensation routine, or is stable enough as shipped.

If you run a KX3 without the compensation you may think they can't hear you
when actually the problem is in the small drift in your transmit frequency.
I first discovered this when running WSPR on the KX3 and listening to
myself on a nearby K3. The graphic display of carrier frequency offered by
WSPR made it clear what was happening. My stock KX3 drifted by about 14 Hz
in the first half-minute or so of transmission. Contacts on JT65 were not
impossible, but they were rare, as were WSPR reports.

You can search the archives for many, many posts on this subject, and look
on the Elecraft website for the recommended fix, which involves putting
your KX3 in the fridge, then running a compensation routine while you warm
it up with a heat gun.

Meanwhile, I would be interested to know the answer to the original
question, as I am sure many others would be as well.

Tony KT0NY
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VA3MA

Re: KX2 on JT65 & JT9 ??

In reply to this post by Elecraft mailing list

Luke
Thanks - just what I needed to know!
Have you tried JT9 ?
Perhaps some sort of heatsink/handles added to the case might help??
73
Dan VA3MA

On 2016-05-29, at 22:37, Luke <[hidden email]> wrote:

Hmm, not sure why it cut out my message. Here's what I wrote:

I've used my KX2 on WSPR and JT65 and it appears to be plenty stable. I used to have a KX3 and sold it because it wouldn't decode WSPR between transmit cycles due to excessive drift. I've kept the KX2 to <5 watts because the right sideplate gets very hot with the high duty cycle.

I've actually just been sitting here running JT65 @ 10 watts when I got your email, and it is doing pretty well. I had 3 back to back QSO's and on the last transmission the PA Temp got up to 47C (~117F) which doesn't seem too bad. As it cools off there is no drifting or slanting of signals on the waterfall either. I think the 1 minute on/off duty cycle of JT65 is very doable with the KX2, and WSPR might be pushing it. The other night the sideplate got quite hot running WSPR at 5 watts.

Luke
AD0KI

From: Dan - VA3MA <[hidden email]>
To: Luke <[hidden email]>
Sent: Sunday, May 29, 2016 8:12 PM
Subject: Re: [Elecraft] KX2 on JT65 & JT9 ??

Luke
No content????

> On May 29, 2016, at 8:51 PM, Luke via Elecraft <[hidden email]> wrote:
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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>
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wayne burdick

Re: KX2 on JT65 & JT9 ??

Administrator

I'm glad it's working. But just in case, we will also be providing an optional extended temperature compensation procedure for the KX2.

73,
Wayne

> On 2016-05-29, at 22:37, Luke <[hidden email]> wrote:
>
> Hmm, not sure why it cut out my message. Here's what I wrote:
>
> I've used my KX2 on WSPR and JT65 and it appears to be plenty stable. I used to have a KX3 and sold it because it wouldn't decode WSPR between transmit cycles due to excessive drift. I've kept the KX2 to <5 watts because the right sideplate gets very hot with the high duty cycle.
>
> I've actually just been sitting here running JT65 @ 10 watts when I got your email, and it is doing pretty well. I had 3 back to back QSO's and on the last transmission the PA Temp got up to 47C (~117F) which doesn't seem too bad. As it cools off there is no drifting or slanting of signals on the waterfall either. I think the 1 minute on/off duty cycle of JT65 is very doable with the KX2, and WSPR might be pushing it. The other night the sideplate got quite hot running WSPR at 5 watts.
>
> Luke
> AD0KI

VA3MA

Re: KX2 on JT65 & JT9 ??

Wayne
I would imagine a bit of cooling on the KX2 end plate will help also? Heat sink...
Happy to see it is within limits for WSJT modes without freezing it!! Hi hi
Dan VA3MA

> On May 29, 2016, at 11:35 PM, Wayne Burdick <[hidden email]> wrote:
>
> I'm glad it's working. But just in case, we will also be providing an optional extended temperature compensation procedure for the KX2.
>
> 73,
> Wayne
>
>
>> On 2016-05-29, at 22:37, Luke <[hidden email]> wrote:
>>
>> Hmm, not sure why it cut out my message. Here's what I wrote:
>>
>> I've used my KX2 on WSPR and JT65 and it appears to be plenty stable. I used to have a KX3 and sold it because it wouldn't decode WSPR between transmit cycles due to excessive drift. I've kept the KX2 to <5 watts because the right sideplate gets very hot with the high duty cycle.
>>
>> I've actually just been sitting here running JT65 @ 10 watts when I got your email, and it is doing pretty well. I had 3 back to back QSO's and on the last transmission the PA Temp got up to 47C (~117F) which doesn't seem too bad. As it cools off there is no drifting or slanting of signals on the waterfall either. I think the 1 minute on/off duty cycle of JT65 is very doable with the KX2, and WSPR might be pushing it. The other night the sideplate got quite hot running WSPR at 5 watts.
>>
>> Luke
>> AD0KI
>
>
>

Lyle Johnson

Re: KX2 on JT65 & JT9 ??

In reply to this post by VA3MA

The local oscillator design of the KX2 is very different from the KX3, as are the thermal isolation of the oscillator from the PA and the high current paths in the radio. There is as yet no field temperature compensation procedure available for the KX2 nor is it clear that one is needed. At least one KX2 field tester operated JT65 successfully with the KX2.

There are enough KX2 radios in the field now that it should be a simple matter for an owner to measure the stability of the radio in this mode and report the results to the group to satisfy the curious...

73,

Lyle KK7P (on "vacation")

Sent from my iPhone

> On May 29, 2016, at 8:14 PM, Dan - VA3MA <[hidden email]> wrote:
>
> Luke
> Thanks - just what I needed to know!
> Have you tried JT9 ?
> Perhaps some sort of heatsink/handles added to the case might help??
> 73
> Dan VA3MA
>
>
> On 2016-05-29, at 22:37, Luke <[hidden email]> wrote:
>
> Hmm, not sure why it cut out my message. Here's what I wrote:
>
> I've used my KX2 on WSPR and JT65 and it appears to be plenty stable. I used to have a KX3 and sold it because it wouldn't decode WSPR between transmit cycles due to excessive drift. I've kept the KX2 to <5 watts because the right sideplate gets very hot with the high duty cycle.
>
> I've actually just been sitting here running JT65 @ 10 watts when I got your email, and it is doing pretty well. I had 3 back to back QSO's and on the last transmission the PA Temp got up to 47C (~117F) which doesn't seem too bad. As it cools off there is no drifting or slanting of signals on the waterfall either. I think the 1 minute on/off duty cycle of JT65 is very doable with the KX2, and WSPR might be pushing it. The other night the sideplate got quite hot running WSPR at 5 watts.
>
> Luke
> AD0KI
>
>
> From: Dan - VA3MA <[hidden email]>
> To: Luke <[hidden email]>
> Sent: Sunday, May 29, 2016 8:12 PM
> Subject: Re: [Elecraft] KX2 on JT65 & JT9 ??
>
> Luke
> No content????
>
>> On May 29, 2016, at 8:51 PM, Luke via Elecraft <[hidden email]> wrote:
>>
>>
>> ______________________________________________________________
>> 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
>> Message delivered to [hidden email]
>
> ______________________________________________________________
> Elecraft mailing list
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VA3MA

Re: KX2 on JT65 & JT9 ??

In reply to this post by VA3MA

Luke
I too sold my KX3 for the same reason- no WSJT.
Happy to see KX2 capable with care
Dan

> On May 29, 2016, at 11:20 PM, Luke <[hidden email]> wrote:
>
> I just tried JT9 actually and had no problems. If you head over to PSKReporter and type in my call sign you can see how it's been working for me this evening. It seems to heat up a little faster using JT9, but it's still managable. I don't mind taking a few minutes between QSO's to let things cool off. From my understanding Gemsproducts.com already has KX2 side handles in the works and I will definitely pick some up and see how they work. I can only imagine that any more metal on the side to pick up some extra heat will only be a good thing.
>
> Luke
> AD0KI
>
>
>
>
> From: Dan - VA3MA <[hidden email]>
> To: Luke <[hidden email]>
> Cc: Elecraft <[hidden email]>
> Sent: Sunday, May 29, 2016 9:14 PM
> Subject: Re: [Elecraft] KX2 on JT65 & JT9 ??
>
> Luke
> Thanks - just what I needed to know!
> Have you tried JT9 ?
> Perhaps some sort of heatsink/handles added to the case might help??
> 73
> Dan VA3MA
>
>
> On 2016-05-29, at 22:37, Luke <[hidden email]> wrote:
>
> Hmm, not sure why it cut out my message. Here's what I wrote:
>
> I've used my KX2 on WSPR and JT65 and it appears to be plenty stable. I used to have a KX3 and sold it because it wouldn't decode WSPR between transmit cycles due to excessive drift. I've kept the KX2 to <5 watts because the right sideplate gets very hot with the high duty cycle.
>
> I've actually just been sitting here running JT65 @ 10 watts when I got your email, and it is doing pretty well. I had 3 back to back QSO's and on the last transmission the PA Temp got up to 47C (~117F) which doesn't seem too bad. As it cools off there is no drifting or slanting of signals on the waterfall either. I think the 1 minute on/off duty cycle of JT65 is very doable with the KX2, and WSPR might be pushing it. The other night the sideplate got quite hot running WSPR at 5 watts.
>
> Luke
> AD0KI
>
>
> From: Dan - VA3MA <[hidden email]>
> To: Luke <[hidden email]>
> Sent: Sunday, May 29, 2016 8:12 PM
> Subject: Re: [Elecraft] KX2 on JT65 & JT9 ??
>
> Luke
> No content????
>
> > On May 29, 2016, at 8:51 PM, Luke via Elecraft <[hidden email]> wrote:
> >
> >
> > ______________________________________________________________
> > 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
> > Message delivered to [hidden email]
>
>
>

VA3MA

Re: KX2 on JT65 & JT9 ??

In reply to this post by Lyle Johnson

Lyle
Such data would be very beneficial.
And result in more KX2 sales - ha if that could be handled!!
Note that Wayne just posted that a temp comp procedure will be posted.
Dan VA3MA

> On May 29, 2016, at 11:45 PM, Lyle <[hidden email]> wrote:
>
> The local oscillator design of the KX2 is very different from the KX3, as are the thermal isolation of the oscillator from the PA and the high current paths in the radio. There is as yet no field temperature compensation procedure available for the KX2 nor is it clear that one is needed. At least one KX2 field tester operated JT65 successfully with the KX2.
>
> There are enough KX2 radios in the field now that it should be a simple matter for an owner to measure the stability of the radio in this mode and report the results to the group to satisfy the curious...
>
> 73,
>
> Lyle KK7P (on "vacation")
>
> Sent from my iPhone
>
>> On May 29, 2016, at 8:14 PM, Dan - VA3MA <[hidden email]> wrote:
>>
>> Luke
>> Thanks - just what I needed to know!
>> Have you tried JT9 ?
>> Perhaps some sort of heatsink/handles added to the case might help??
>> 73
>> Dan VA3MA
>>
>>
>> On 2016-05-29, at 22:37, Luke <[hidden email]> wrote:
>>
>> Hmm, not sure why it cut out my message. Here's what I wrote:
>>
>> I've used my KX2 on WSPR and JT65 and it appears to be plenty stable. I used to have a KX3 and sold it because it wouldn't decode WSPR between transmit cycles due to excessive drift. I've kept the KX2 to <5 watts because the right sideplate gets very hot with the high duty cycle.
>>
>> I've actually just been sitting here running JT65 @ 10 watts when I got your email, and it is doing pretty well. I had 3 back to back QSO's and on the last transmission the PA Temp got up to 47C (~117F) which doesn't seem too bad. As it cools off there is no drifting or slanting of signals on the waterfall either. I think the 1 minute on/off duty cycle of JT65 is very doable with the KX2, and WSPR might be pushing it. The other night the sideplate got quite hot running WSPR at 5 watts.
>>
>> Luke
>> AD0KI
>>
>>
>> From: Dan - VA3MA <[hidden email]>
>> To: Luke <[hidden email]>
>> Sent: Sunday, May 29, 2016 8:12 PM
>> Subject: Re: [Elecraft] KX2 on JT65 & JT9 ??
>>
>> Luke
>> No content????
>>
>>> On May 29, 2016, at 8:51 PM, Luke via Elecraft <[hidden email]> wrote:
>>>
>>>
>>> ______________________________________________________________
>>> 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
>>> Message delivered to [hidden email]
>>
>> ______________________________________________________________
>> 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
>> Message delivered to [hidden email]

wayne burdick

Re: KX2 on JT65 & JT9 ??

Administrator

Lyle is on vacation and didn't get that memo. He's above and beyond the call of duty posting at all :)

Also note that the latest production KX3 RF board (rev. E) has the synth circuitry a lot farther from the PA and driver. This significantly reduced the thermal gradient. (The other major Rev. E RF board improvement was tighter 17/15/12/10 meter band-pass filters. These were inherited by the KX2 as well.)

Wayne
N6KR

On May 29, 2016, at 8:50 PM, D Howard <[hidden email]> wrote:

> Lyle
> Such data would be very beneficial.
> And result in more KX2 sales - ha if that could be handled!!
> Note that Wayne just posted that a temp comp procedure will be posted.
> Dan VA3MA
>
>> On May 29, 2016, at 11:45 PM, Lyle <[hidden email]> wrote:
>>
>> The local oscillator design of the KX2 is very different from the KX3, as are the thermal isolation of the oscillator from the PA and the high current paths in the radio. There is as yet no field temperature compensation procedure available for the KX2 nor is it clear that one is needed. At least one KX2 field tester operated JT65 successfully with the KX2.
>>
>> There are enough KX2 radios in the field now that it should be a simple matter for an owner to measure the stability of the radio in this mode and report the results to the group to satisfy the curious...
>>
>> 73,
>>
>> Lyle KK7P (on "vacation")
>>
>> Sent from my iPhone
>>
>>> On May 29, 2016, at 8:14 PM, Dan - VA3MA <[hidden email]> wrote:
>>>
>>> Luke
>>> Thanks - just what I needed to know!
>>> Have you tried JT9 ?
>>> Perhaps some sort of heatsink/handles added to the case might help??
>>> 73
>>> Dan VA3MA
>>>
>>>
>>> On 2016-05-29, at 22:37, Luke <[hidden email]> wrote:
>>>
>>> Hmm, not sure why it cut out my message. Here's what I wrote:
>>>
>>> I've used my KX2 on WSPR and JT65 and it appears to be plenty stable. I used to have a KX3 and sold it because it wouldn't decode WSPR between transmit cycles due to excessive drift. I've kept the KX2 to <5 watts because the right sideplate gets very hot with the high duty cycle.
>>>
>>> I've actually just been sitting here running JT65 @ 10 watts when I got your email, and it is doing pretty well. I had 3 back to back QSO's and on the last transmission the PA Temp got up to 47C (~117F) which doesn't seem too bad. As it cools off there is no drifting or slanting of signals on the waterfall either. I think the 1 minute on/off duty cycle of JT65 is very doable with the KX2, and WSPR might be pushing it. The other night the sideplate got quite hot running WSPR at 5 watts.
>>>
>>> Luke
>>> AD0KI
>>>
>>>
>>> From: Dan - VA3MA <[hidden email]>
>>> To: Luke <[hidden email]>
>>> Sent: Sunday, May 29, 2016 8:12 PM
>>> Subject: Re: [Elecraft] KX2 on JT65 & JT9 ??
>>>
>>> Luke
>>> No content????
>>>
>>>> On May 29, 2016, at 8:51 PM, Luke via Elecraft <[hidden email]> wrote:
>>>>
>>>>
>>>> ______________________________________________________________
>>>> 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
>>>> Message delivered to [hidden email]
>>>
>>> ______________________________________________________________
>>> 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
>>> Message delivered to [hidden email]
> ______________________________________________________________
> 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
> Message delivered to [hidden email]

Elecraft mailing list

Re: KX2 on JT65 & JT9 ??

In reply to this post by VA3MA

Dan ,

I am surprised that you couldn't get WSJT to go with your KX3 and had to sell it.

I am using my KX3 (note not a KX2) on WSJT on 144 MHz EME JT65b. I did however do the extended temperature VFO compensation first and that perhaps is a key requirement. The KX3 was actually more stable than my original 144 MHz transverter's TCXO, which I had to replace with a better TCXO to get the transmit drift to satisfactory levels.

73 from David GM4JJJ

> On 30 May 2016, at 04:45, D Howard <[hidden email]> wrote:
>
> Luke
> I too sold my KX3 for the same reason- no WSJT.
> Happy to see KX2 capable with care
> Dan
>
>> On May 29, 2016, at 11:20 PM, Luke <[hidden email]> wrote:
>>
>> I just tried JT9 actually and had no problems. If you head over to PSKReporter and type in my call sign you can see how it's been working for me this evening. It seems to heat up a little faster using JT9, but it's still managable. I don't mind taking a few minutes between QSO's to let things cool off. From my understanding Gemsproducts.com already has KX2 side handles in the works and I will definitely pick some up and see how they work. I can only imagine that any more metal on the side to pick up some extra heat will only be a good thing.
>>
>> Luke
>> AD0KI
>>
>>
>>
>>
>> From: Dan - VA3MA <[hidden email]>
>> To: Luke <[hidden email]>
>> Cc: Elecraft <[hidden email]>
>> Sent: Sunday, May 29, 2016 9:14 PM
>> Subject: Re: [Elecraft] KX2 on JT65 & JT9 ??
>>
>> Luke
>> Thanks - just what I needed to know!
>> Have you tried JT9 ?
>> Perhaps some sort of heatsink/handles added to the case might help??
>> 73
>> Dan VA3MA
>>
>>
>> On 2016-05-29, at 22:37, Luke <[hidden email]> wrote:
>>
>> Hmm, not sure why it cut out my message. Here's what I wrote:
>>
>> I've used my KX2 on WSPR and JT65 and it appears to be plenty stable. I used to have a KX3 and sold it because it wouldn't decode WSPR between transmit cycles due to excessive drift. I've kept the KX2 to <5 watts because the right sideplate gets very hot with the high duty cycle.
>>
>> I've actually just been sitting here running JT65 @ 10 watts when I got your email, and it is doing pretty well. I had 3 back to back QSO's and on the last transmission the PA Temp got up to 47C (~117F) which doesn't seem too bad. As it cools off there is no drifting or slanting of signals on the waterfall either. I think the 1 minute on/off duty cycle of JT65 is very doable with the KX2, and WSPR might be pushing it. The other night the sideplate got quite hot running WSPR at 5 watts.
>>
>> Luke
>> AD0KI
>>
>>
>> From: Dan - VA3MA <[hidden email]>
>> To: Luke <[hidden email]>
>> Sent: Sunday, May 29, 2016 8:12 PM
>> Subject: Re: [Elecraft] KX2 on JT65 & JT9 ??
>>
>> Luke
>> No content????
>>
>>> On May 29, 2016, at 8:51 PM, Luke via Elecraft <[hidden email]> wrote:
>>>
>>>
>>> ______________________________________________________________
>>> 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
>>> Message delivered to [hidden email]
> ______________________________________________________________
> 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
> Message delivered to [hidden email]

VA3MA

Re: KX2 on JT65 & JT9 ??

David
I thought at the price I paid for the KX3 I shouldn't have to do the compensation nor run the KX3 at such reduced power once compensated. My trusty old FT817 worked fine.
I also assumed Elecraft would address the issue with an updated KX3 -ie an 'KX3s' at some point.
So I sold it awaiting the 'upgrade' which turned out to be the KX2 !
Which is far more stable out of the box.
I'm happy to now order a KX2!
73/72
Dan VA3MA

> On May 30, 2016, at 4:01 AM, David Anderson <[hidden email]> wrote:
>
> Dan ,
>
> I am surprised that you couldn't get WSJT to go with your KX3 and had to sell it.
>
> I am using my KX3 (note not a KX2) on WSJT on 144 MHz EME JT65b. I did however do the extended temperature VFO compensation first and that perhaps is a key requirement. The KX3 was actually more stable than my original 144 MHz transverter's TCXO, which I had to replace with a better TCXO to get the transmit drift to satisfactory levels.
>
>
> 73 from David GM4JJJ
>
>> On 30 May 2016, at 04:45, D Howard <[hidden email]> wrote:
>>
>> Luke
>> I too sold my KX3 for the same reason- no WSJT.
>> Happy to see KX2 capable with care
>> Dan
>>
>>> On May 29, 2016, at 11:20 PM, Luke <[hidden email]> wrote:
>>>
>>> I just tried JT9 actually and had no problems. If you head over to PSKReporter and type in my call sign you can see how it's been working for me this evening. It seems to heat up a little faster using JT9, but it's still managable. I don't mind taking a few minutes between QSO's to let things cool off. From my understanding Gemsproducts.com already has KX2 side handles in the works and I will definitely pick some up and see how they work. I can only imagine that any more metal on the side to pick up some extra heat will only be a good thing.
>>>
>>> Luke
>>> AD0KI
>>>
>>>
>>>
>>>
>>> From: Dan - VA3MA <[hidden email]>
>>> To: Luke <[hidden email]>
>>> Cc: Elecraft <[hidden email]>
>>> Sent: Sunday, May 29, 2016 9:14 PM
>>> Subject: Re: [Elecraft] KX2 on JT65 & JT9 ??
>>>
>>> Luke
>>> Thanks - just what I needed to know!
>>> Have you tried JT9 ?
>>> Perhaps some sort of heatsink/handles added to the case might help??
>>> 73
>>> Dan VA3MA
>>>
>>>
>>> On 2016-05-29, at 22:37, Luke <[hidden email]> wrote:
>>>
>>> Hmm, not sure why it cut out my message. Here's what I wrote:
>>>
>>> I've used my KX2 on WSPR and JT65 and it appears to be plenty stable. I used to have a KX3 and sold it because it wouldn't decode WSPR between transmit cycles due to excessive drift. I've kept the KX2 to <5 watts because the right sideplate gets very hot with the high duty cycle.
>>>
>>> I've actually just been sitting here running JT65 @ 10 watts when I got your email, and it is doing pretty well. I had 3 back to back QSO's and on the last transmission the PA Temp got up to 47C (~117F) which doesn't seem too bad. As it cools off there is no drifting or slanting of signals on the waterfall either. I think the 1 minute on/off duty cycle of JT65 is very doable with the KX2, and WSPR might be pushing it. The other night the sideplate got quite hot running WSPR at 5 watts.
>>>
>>> Luke
>>> AD0KI
>>>
>>>
>>> From: Dan - VA3MA <[hidden email]>
>>> To: Luke <[hidden email]>
>>> Sent: Sunday, May 29, 2016 8:12 PM
>>> Subject: Re: [Elecraft] KX2 on JT65 & JT9 ??
>>>
>>> Luke
>>> No content????
>>>
>>>> On May 29, 2016, at 8:51 PM, Luke via Elecraft <[hidden email]> wrote:
>>>>
>>>>
>>>> ______________________________________________________________
>>>> 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
>>>> Message delivered to [hidden email]
>> ______________________________________________________________
>> 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
>> Message delivered to [hidden email]
>

VA3MA

Re: KX2 on JT65 & JT9 ??

In reply to this post by wayne burdick

Wayne
As Lyle mentions in his email for the KX2 - it would be helpful if someone (Elecraft?) would measure the stability of the new revE KX3 in WSJT modes and post the results.
Hopefully resulting in increased sales!
Thanks for your comments
73
Dan VA3MA

> On May 30, 2016, at 12:43 AM, Wayne Burdick <[hidden email]> wrote:
>
> Lyle is on vacation and didn't get that memo. He's above and beyond the call of duty posting at all :)
>
> Also note that the latest production KX3 RF board (rev. E) has the synth circuitry a lot farther from the PA and driver. This significantly reduced the thermal gradient. (The other major Rev. E RF board improvement was tighter 17/15/12/10 meter band-pass filters. These were inherited by the KX2 as well.)
>
> Wayne
> N6KR
>
>
>
>> On May 29, 2016, at 8:50 PM, D Howard <[hidden email]> wrote:
>>
>> Lyle
>> Such data would be very beneficial.
>> And result in more KX2 sales - ha if that could be handled!!
>> Note that Wayne just posted that a temp comp procedure will be posted.
>> Dan VA3MA
>>
>>> On May 29, 2016, at 11:45 PM, Lyle <[hidden email]> wrote:
>>>
>>> The local oscillator design of the KX2 is very different from the KX3, as are the thermal isolation of the oscillator from the PA and the high current paths in the radio. There is as yet no field temperature compensation procedure available for the KX2 nor is it clear that one is needed. At least one KX2 field tester operated JT65 successfully with the KX2.
>>>
>>> There are enough KX2 radios in the field now that it should be a simple matter for an owner to measure the stability of the radio in this mode and report the results to the group to satisfy the curious...
>>>
>>> 73,
>>>
>>> Lyle KK7P (on "vacation")
>>>
>>> Sent from my iPhone
>>>
>>>> On May 29, 2016, at 8:14 PM, Dan - VA3MA <[hidden email]> wrote:
>>>>
>>>> Luke
>>>> Thanks - just what I needed to know!
>>>> Have you tried JT9 ?
>>>> Perhaps some sort of heatsink/handles added to the case might help??
>>>> 73
>>>> Dan VA3MA
>>>>
>>>>
>>>> On 2016-05-29, at 22:37, Luke <[hidden email]> wrote:
>>>>
>>>> Hmm, not sure why it cut out my message. Here's what I wrote:
>>>>
>>>> I've used my KX2 on WSPR and JT65 and it appears to be plenty stable. I used to have a KX3 and sold it because it wouldn't decode WSPR between transmit cycles due to excessive drift. I've kept the KX2 to <5 watts because the right sideplate gets very hot with the high duty cycle.
>>>>
>>>> I've actually just been sitting here running JT65 @ 10 watts when I got your email, and it is doing pretty well. I had 3 back to back QSO's and on the last transmission the PA Temp got up to 47C (~117F) which doesn't seem too bad. As it cools off there is no drifting or slanting of signals on the waterfall either. I think the 1 minute on/off duty cycle of JT65 is very doable with the KX2, and WSPR might be pushing it. The other night the sideplate got quite hot running WSPR at 5 watts.
>>>>
>>>> Luke
>>>> AD0KI
>>>>
>>>>
>>>> From: Dan - VA3MA <[hidden email]>
>>>> To: Luke <[hidden email]>
>>>> Sent: Sunday, May 29, 2016 8:12 PM
>>>> Subject: Re: [Elecraft] KX2 on JT65 & JT9 ??
>>>>
>>>> Luke
>>>> No content????
>>>>
>>>>> On May 29, 2016, at 8:51 PM, Luke via Elecraft <[hidden email]> wrote:
>>>>>
>>>>>
>>>>> ______________________________________________________________
>>>>> 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
>>>>> Message delivered to [hidden email]
>>>>
>>>> ______________________________________________________________
>>>> 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
>>>> Message delivered to [hidden email]
>> ______________________________________________________________
>> 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
>> Message delivered to [hidden email]
>