Re: [Elecraft] K3 and JT65

[Jorge Diez - CX6VM]

Hi Don

OK; thanks very much, I think is working, I play with the adjustments and
got RF out. Will try later to make some QSOs

73,
Jorge

2017-02-21 21:33 GMT-03:00 Don Wilhelm :

> Jorge,
>
> As with all data modes, use DATA A.  It should be the same as USB, but
> with compression and TX EQ disabled.
>
> The DATA A mode MIC SEL should be set to LINE.
>
> Adjust the computer soundcard output to at least 75% and then adjust the
> MIC Gain (actually Line in gain) to achieve the proper number of ALC bars.
>
> 73,
> Don W3FPR
>
>
> On 2/21/2017 7:22 PM, Jorge Diez - CX6VM wrote:
>
>> Thanks Don
>>
>> what mode do you use? DATA - DATA A?  USB?
>>
>> In USB mode with MIC know I adjust LINE but no bars on the ALC meter.
>> Maybe something with the notebook soundcard, thats is very hard for me. I
>> will trying to figure out about the computer, or try to get a USB external
>> soundcard
>>
>>
>>
>


-- 
73,
Jorge
CX6VM/CW5W
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Re: [Elecraft] K3 and JT65

[Harry Yingst via Elecraft]

Are you in Data Mode?



  From: Jorge Diez - CX6VM <cx6vm.jo...@gmail.com>
 To: Elecraft Reflector <elecraft@mailman.qth.net> 
 Sent: Tuesday, February 21, 2017 6:36 PM
 Subject: [Elecraft] K3 and JT65
   
Hello

I am trying JT65. Two audio cables from LINE IN and OUT in the K3 to phones
and mic in the computer

I can see decoding on the software, but I cannot get RF out. The K3 go to
TX, but I think is not sending RF. I increase RF while TX and I dont see RF
out on the K3 smeter

Any help?

thanks,
Jorge
CX6VM/CW5W
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Re: [Elecraft] K3 and JT65

[Don Wilhelm]

Jorge,

As with all data modes, use DATA A.  It should be the same as USB, but 
with compression and TX EQ disabled.


The DATA A mode MIC SEL should be set to LINE.

Adjust the computer soundcard output to at least 75% and then adjust the 
MIC Gain (actually Line in gain) to achieve the proper number of ALC bars.


73,
Don W3FPR

On 2/21/2017 7:22 PM, Jorge Diez - CX6VM wrote:

Thanks Don

what mode do you use? DATA - DATA A?  USB?

In USB mode with MIC know I adjust LINE but no bars on the ALC meter.  
Maybe something with the notebook soundcard, thats is very hard for 
me. I will trying to figure out about the computer, or try to get a 
USB external soundcard





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Re: [Elecraft] K3 and JT65

[Jorge Diez - CX6VM]

Thanks Don

what mode do you use? DATA - DATA A?  USB?

In USB mode with MIC know I adjust LINE but no bars on the ALC meter.
Maybe something with the notebook soundcard, thats is very hard for me. I
will trying to figure out about the computer, or try to get a USB external
soundcard

thanks,
Jorge

2017-02-21 20:48 GMT-03:00 Don Wilhelm :

> Jorge,
>
> JT65 is "just another data mode", and like other data modes, you must
> drive the K3 audio up until you have 4 bars solid on the ALC meter with the
> 5th bar flashing.
> Adjust the computer soundcard output and the K3 LINE IN Gain to achieve
> that condition.  You do not have to transmit while making that adjustment,
> set the K3 to TX TEST or turn the power to zero.
>
> Then adjust your desired power level with the power knob.
>
> I know this differs from the common internet (and some software
> instructions) which say to set the power to full and use the audio level to
> control the power.  That advice is for rigs other than Elecraft.
> That does not work with the K3 (or other Elecraft rigs).
> Elecraft controls the power differently than other transceivers - the
> firmware adjusts to the power set with the power knob rather than merely
> controlling the drive with a knob.
>
> 73,
> Don W3FPR
>
>
> On 2/21/2017 6:36 PM, Jorge Diez - CX6VM wrote:
>
>> Hello
>>
>> I am trying JT65. Two audio cables from LINE IN and OUT in the K3 to
>> phones
>> and mic in the computer
>>
>> I can see decoding on the software, but I cannot get RF out. The K3 go to
>> TX, but I think is not sending RF. I increase RF while TX and I dont see
>> RF
>> out on the K3 smeter
>>
>>


-- 
73,
Jorge
CX6VM/CW5W
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Re: [Elecraft] K3 and JT65

[Don Wilhelm]

Jorge,

JT65 is "just another data mode", and like other data modes, you must 
drive the K3 audio up until you have 4 bars solid on the ALC meter with 
the 5th bar flashing.
Adjust the computer soundcard output and the K3 LINE IN Gain to achieve 
that condition.  You do not have to transmit while making that 
adjustment, set the K3 to TX TEST or turn the power to zero.


Then adjust your desired power level with the power knob.

I know this differs from the common internet (and some software 
instructions) which say to set the power to full and use the audio level 
to control the power.  That advice is for rigs other than Elecraft.

That does not work with the K3 (or other Elecraft rigs).
Elecraft controls the power differently than other transceivers - the 
firmware adjusts to the power set with the power knob rather than merely 
controlling the drive with a knob.


73,
Don W3FPR

On 2/21/2017 6:36 PM, Jorge Diez - CX6VM wrote:

Hello

I am trying JT65. Two audio cables from LINE IN and OUT in the K3 to phones
and mic in the computer

I can see decoding on the software, but I cannot get RF out. The K3 go to
TX, but I think is not sending RF. I increase RF while TX and I dont see RF
out on the K3 smeter


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[Elecraft] K3 and JT65

[Jorge Diez - CX6VM]

Hello

I am trying JT65. Two audio cables from LINE IN and OUT in the K3 to phones
and mic in the computer

I can see decoding on the software, but I cannot get RF out. The K3 go to
TX, but I think is not sending RF. I increase RF while TX and I dont see RF
out on the K3 smeter

Any help?

thanks,
Jorge
CX6VM/CW5W
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[Elecraft] K3 recent jt65/jt9 setup

[Nr4c]

Recently someone posted CONFIG info for this.  I can't locate it now that I 
need it. Ca mm someone please point me to this information for my K3 and/or K3S?

Sent from my iPhone
...nr4c. bill


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Re: [Elecraft] [K3] Hum JT65/JT9 and Vox. Resolved.

[Larry Lopez]

What's interesting is that all of 60 Hum and it's harmonics are gone.
The line out is 2.

I have the Mike volume:

Balance is all the way over to one channel.
Volume in full

I adjusted line out to flat top and halved  it.

The JT65/JT9 display looks good now.



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Re: [Elecraft] [K3] Hum JT65/JT9 and Vox. Resolved.

[Larry Lopez]

Thanks Jim  Rick for your help.



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Re: [Elecraft] [K3] Hum JT65/JT9 and Vox. Resolved.

[Larry Lopez]

So I decide to give up and set the audio level right.
So I get the free for private use sound card oscilloscope
http://www.zeitnitz.de/Christian/scope_en.

I picked this one because it was first when I goggled sound card
oscilloscope.

Very nice.

But gee, there are 2 channels for the mike and a balance control.
One channel has the signal one channel has chaff.

So I set the balance control to kill the chaff.
I then raise the volume in the K3 line out until it flat tops
and I back it off by 2.

next step, get it to sample at 48000.

obsessive, I am.







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Re: [Elecraft] [K3] Hum JT65/JT9 and Vox. Resolved.

[Rick Bates]

The gain of the sound card  (the volume) can be changed by the driver so even 
if the K3 output doesn't change, the levels can still change. 

I leave the software (driver) maxed out and the K3 Lin Out at 1 (almost off), 
but this risks swamping the card AGC so I use the K3 filters to limit what the 
sound card gets. 

73,
Rick wa6nhc

Tiny iPhone 5 keypad, typos are inevitable

 On May 18, 2014, at 12:42 PM, Larry Lopez lawlop...@gmail.com wrote:
 
 So I decide to give up and set the audio level right.
 So I get the free for private use sound card oscilloscope
 http://www.zeitnitz.de/Christian/scope_en.
 
 I picked this one because it was first when I goggled sound card
 oscilloscope.
 
 Very nice.
 
 But gee, there are 2 channels for the mike and a balance control.
 One channel has the signal one channel has chaff.
 
 So I set the balance control to kill the chaff.
 I then raise the volume in the K3 line out until it flat tops
 and I back it off by 2.
 
 next step, get it to sample at 48000.
 
 obsessive, I am.
 
 
 
 
 
 
 
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Re: [Elecraft] [K3] Hum JT65/JT9 and Vox. Resolved.

[Jim Brown]

On 5/18/2014 12:42 PM, Larry Lopez wrote:

So I set the balance control to kill the chaff.
I then raise the volume in the K3 line out until it flat tops
and I back it off by 2.


Good method, BUT -- better to drop the level by half the voltage from 
the flat top point. That's because the distortion of many (most?) 
computer sound cards drops by 10 dB or more at half their maximum output 
voltage.


73, Jim K9YC
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Re: [Elecraft] K3 and JT65 (JT9) power instability problem

[Doug Ellmore]

I set my Mic gain to 30-32 to get in the right range.  I use an external
Signal Link which is set at 9'oclock for input and output.

73, NA1DX
Doug Ellmore
d...@ellmore.net
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Re: [Elecraft] K3 and JT65 (JT9) power instability problem

[Rick Bates]

Hi Doug,

It's better to  use the line in/out on the back of the K3 than the mic.  
Also you will want to use Data A mode.


Once you have made that connection, what I use is Lin Out set at 1 and 
the SLUSB set at noon (delay at zero).


Then adjust your audio DRIVERS (IN and OUT) in the software to max. 
After that is done, adjust the Lin In (mic control in Data mode) to get 
four full ALC LEDs showing with the fifth flickering) with transmit.  
Then leave it alone.


Adjust your power output AFTER going through all that.

As has been stated numerous times, the K3 is not like any other radio in 
this regard (and many others).


73,
Rick WA6NHC

On 5/13/2014 9:01 AM, Doug Ellmore wrote:

I set my Mic gain to 30-32 to get in the right range.  I use an external
Signal Link which is set at 9'oclock for input and output.

73, NA1DX
Doug Ellmore
d...@ellmore.net
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Re: [Elecraft] K3 and JT65 (JT9) power instability problem

[Don Wilhelm]

Doug,

It may be as simple as increasing the audio drive.
The K3 power control works differently than other transceivers, and the 
audio must be sufficient for the K3 to properly set the power output 
level.  Do not attempt to adjust the audio in an effort to control power 
- use the power knob to set your desired power level.


You must drive the audio enough to produce 4 bars with the 5th 
flickering on the ALC meter.
That *is* the no-ALC point - the 1st 4 bars of that meter are there only 
to indicate the audio level.

You can set the audio level without transmitting by turning on TX TEST.

73,
Don W3FPR

On 5/13/2014 12:01 PM, Doug Ellmore wrote:

I set my Mic gain to 30-32 to get in the right range.  I use an external
Signal Link which is set at 9'oclock for input and output.




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Re: [Elecraft] K3 and JT65 (JT9) power instability problem

[Fred Jensen]

I made a little mark at the 4th bar position on the display with a 
dry-erase black marker.  I have a really hard time counting them in 
real-time as I'm adjusting levels.  And yes, I have a math degree, no 
need for snarky counting comments. :-))


This subject of K2/K3/KX3 power control comes up often.  Maybe some 
editing in the Users' Manuals to make it very obvious and clear that 
You really need to read and understand this part would help?


73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2014 Cal QSO Party 4-5 Oct 2014
- www.cqp.org

On 5/13/2014 11:12 AM, Don Wilhelm wrote:


You must drive the audio enough to produce 4 bars with the 5th
flickering on the ALC meter.
That *is* the no-ALC point - the 1st 4 bars of that meter are there only
to indicate the audio level.
You can set the audio level without transmitting by turning on TX TEST.



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Re: [Elecraft] K3 and JT65 (JT9) power instability problem

[Walter Underwood]

Never confuse mathematics with arithmetic. Totally different things.  --wunder, 
K6WRU

On May 13, 2014, at 4:21 PM, Fred Jensen k6...@foothill.net wrote:

 I made a little mark at the 4th bar position on the display with a dry-erase 
 black marker.  I have a really hard time counting them in real-time as I'm 
 adjusting levels.  And yes, I have a math degree, no need for snarky 
 counting comments. :-))
 
 This subject of K2/K3/KX3 power control comes up often.  Maybe some editing 
 in the Users' Manuals to make it very obvious and clear that You really need 
 to read and understand this part would help?
 
 73,
 
 Fred K6DGW
 - Northern California Contest Club
 - CU in the 2014 Cal QSO Party 4-5 Oct 2014
 - www.cqp.org
 
 On 5/13/2014 11:12 AM, Don Wilhelm wrote:
 
 You must drive the audio enough to produce 4 bars with the 5th
 flickering on the ALC meter.
 That *is* the no-ALC point - the 1st 4 bars of that meter are there only
 to indicate the audio level.
 You can set the audio level without transmitting by turning on TX TEST.
 
 
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--
Walter Underwood
wun...@wunderwood.org



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Re: [Elecraft] K3 and JT65 (JT9) power instability problem

[Walter Underwood]

Also, maybe the group joining message should say If you are having trouble 
setting the power level...

Really, if you blindly gave this answer to every question, the hit rate would 
be decent. I've been working on search engines for the past 15 years, so I 
think about these things.

wunder
K6WRU

On May 13, 2014, at 4:43 PM, Walter Underwood wun...@wunderwood.org wrote:

 Never confuse mathematics with arithmetic. Totally different things.  
 --wunder, K6WRU
 
 On May 13, 2014, at 4:21 PM, Fred Jensen k6...@foothill.net wrote:
 
 I made a little mark at the 4th bar position on the display with a dry-erase 
 black marker.  I have a really hard time counting them in real-time as I'm 
 adjusting levels.  And yes, I have a math degree, no need for snarky 
 counting comments. :-))
 
 This subject of K2/K3/KX3 power control comes up often.  Maybe some editing 
 in the Users' Manuals to make it very obvious and clear that You really 
 need to read and understand this part would help?
 
 73,
 
 Fred K6DGW
 - Northern California Contest Club
 - CU in the 2014 Cal QSO Party 4-5 Oct 2014
 - www.cqp.org
 
 On 5/13/2014 11:12 AM, Don Wilhelm wrote:
 
 You must drive the audio enough to produce 4 bars with the 5th
 flickering on the ALC meter.
 That *is* the no-ALC point - the 1st 4 bars of that meter are there only
 to indicate the audio level.
 You can set the audio level without transmitting by turning on TX TEST.
 
 
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 --
 Walter Underwood
 wun...@wunderwood.org
 
 
 
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--
Walter Underwood
wun...@wunderwood.org



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[Elecraft] K3 and JT65 (JT9) power instability problem

[OH9VD]

I have set the K3/100 output power to 10W.
 
When I start to send in JT65-mode the power rises slowly from 2W to 10W
after few send/receive periods.
After reaching the 10W the power stabilizes. 

Everything seems to work properly except the power instability, anyway I can
have qso's with JT65 and JT9.

The problem is not dependent of band I use (at least bands from 20m up).

I wonder if there anything I can do for the little anoying problem?

I have the newest firmware installed and  I use the newest version of
WSJT-X.

73 de OH9VD, Jarmo



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Re: [Elecraft] K3 and JT65 (JT9) power instability problem

[Sam Morgan]

the K3 is not like other rigs
you must first set the K3's ALC
to show 4 bars with the 5th bar flickering

then set the pwr out to the power level you want to use

On 5/12/2014 8:59 AM, OH9VD wrote:

I have set the K3/100 output power to 10W.

When I start to send in JT65-mode the power rises slowly from 2W to 10W
after few send/receive periods.
After reaching the 10W the power stabilizes.

Everything seems to work properly except the power instability, anyway I can
have qso's with JT65 and JT9.

The problem is not dependent of band I use (at least bands from 20m up).

I wonder if there anything I can do for the little anoying problem?

I have the newest firmware installed and  I use the newest version of
WSJT-X.

73 de OH9VD, Jarmo




GB  73
K5OAIS
am Morgan
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[Elecraft] [K3] Hum JT65/JT9 and Vox. Resolved.

[Larry Lopez]

This is actually covered already but I need to mention it.

When the WSJTX waterfall started losing signals into the noise
I noticed that there was a neat periodic set of signals that
lined up with the frequency ticks.  Eventually it dawned on me
that they were 120 Hz apart and eventually I found a 60 Hz
fundamental.

What I found is that the the line out was picking up the
linear power supply that was behind it.

What I also found out was that as the K3 got closer the
the transmitter came on.

So the magnetic field from the current spikes
from the diodes in the power supply were being picked
up line transformers in the K3.

So I moved the power supply.

Since the transformers get rid of ground loops I wouldn't complain too much.

End of Story.

PS it was really unnerving to move the K3 and have it turn on.





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Re: [Elecraft] [K3] Hum JT65/JT9 and Vox. Resolved.

[Larry Lopez]

I was wildly optimistic in this.
A second source of hum is the switching supply
of the laptop.

It's similar to the power supply hum.
Even though it's clearly a switching supply.

Curiosly the laptop need 12 volts.
So perhaps I can pick that off of the linear
power supply.

Or maybe run everything off of a battery.





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Re: [Elecraft] [K3] Hum JT65/JT9 and Vox. Resolved.

[Larry Lopez]

I switched to a Creative Sound Blaster X-Fi Go!
USB dongle and that got rid of the hum from
the laptop charger.

I got this originally because the desktop
I use has no sound support at all.
It was an extremely cheap server box
that runs Linux.




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Re: [Elecraft] K3 and JT65

[Kjeld Holm]

Hi Mike,

JT65 is one minute transmitting (or more exactly 50 seconds) and 1 minute
receiving. 

For other digital modes your transmission length is of course depending on
how much you want to say per transmission. 

See Owner's Manual on page 9. I am reading this as if it should be possible
to transmit for up to 10 minutes with full power. But I am not 100% sure.
Listen to the fan or check the PA temperature. 

Vy 73 de 
OZ1CCM Kjeld

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Mike Weir
Sent: 16. marts 2014 02:33
To: elecraft@mailman.qth.net
Subject: [Elecraft] K3 and JT65

I am considering using my base model k3 (without KPA100) for digi modes and
was not sure what the duty cycle was for the rig? One of the modes I was
looking at was JT65 and it as I understand has long keydown times. Do I have
to keep the rig at 5 watts for all digi modes  and more so with the long key
down time of JT65 what power recommendations are there for that?MikeVE3WDM

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Re: [Elecraft] K3 and JT65

[Bill Frantz]

I have run a lot of PSK on a K3/10. I have never had a problem 
running full power -- all 10-12 watts of it. Sometimes I type a 
lot too. I get good IMD reports. Don't worry. Be happy.


Cheers - Bill, AE6JV

---
Bill Frantz|We used to quip that password is the most common
408-356-8506   | password. Now it's 'password1.' Who said 
users haven't

www.pwpconsult.com | learned anything about security? -- Bruce Schneier

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Re: [Elecraft] K3 and JT65

[Jim Brown]

On 3/16/2014 10:00 AM, Bill Frantz wrote:
I have run a lot of PSK on a K3/10. I have never had a problem running 
full power -- all 10-12 watts of it. Sometimes I type a lot too. 


The K3, KX3, and the power amps are quite well protected, and designed 
to run full power in keydown modes.


I get good IMD reports. Don't worry. Be happy. 


In a tutorial on clean signals to the NCCC last fall, K6XX noted that 
the distortion in solid state amps rises with output power, and that all 
Elecraft amps are significantly cleaner at half power.


Distortion also rises as power supply voltage drops. So a K3 running on 
13.8 - 14.5 VDC will be cleaner than on 11 VDC.


73, Jim K9YC

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Re: [Elecraft] K3 and JT65

[Bruce Chadbourne]

Hi Mike, great question and I look forward to other answers. The one about
page 9 of the operating manual was a good reminder for me. My answer is
more from experience - for digital modes in general, I've stayed under 50
watts and had good results (and hearing the K3 cooling fans stepping up an
extra notch always reminds me to behave myself).
A few of our brothers use too much power and splatter their signal across
the spectrum. Good operating practice calls for using minimum power
necessary anyway, and it's always fun to see a QSO where someone reports
using 20 watts (i.e. for PSK). The whole point of digital is the ability to
transmit long distance with low power and 100% readability.  On occasion a
QRP station works me and I take the hint - dial power down to 5 watts and
we're doing just fine.
My best story - working JT65, from New Hampshire with a New Zealand station
 - we were doing fine, kept dialing back the power, until we finally lost
each other at 100 milliwatts. Almost perfect copy at 500 milliwatts, and by
the way I had a poor vertical antenna.  It reminded me as a kid having a
toy CB walkie-talkie that operated at 100 mW... never worked NZ with that
thing.

BTW - it would be great to have more of us out there experimenting with the
digital modes; I am still fascinated with all of the digital options (I'm
using fldigi software).  The K3 operates great with fldigi. I also find the
K3UK webpage a great meeting place (there is a dedicated subpage for
digital modes).

-- 
Bruce / KE1CY
Hernando, FL
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Re: [Elecraft] K3 and JT65

[Bruce Chadbourne]

PS - Mike, my apologies, I missed the part of your note that said you were
operating without the KPA100. I hope my answer was still useful. I have no
problems operating digital modes at a full 10w.

-- 
Bruce / KE1CY
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[Elecraft] K3 and JT65

[Mike Weir]

I am considering using my base model k3 (without KPA100) for digi modes and was 
not sure what the duty cycle was for the rig? One of the modes I was looking at 
was JT65 and it as I understand has long keydown times. Do I have to keep the 
rig at 5 watts for all digi modes  and more so with the long key down time of 
JT65 what power recommendations are there for that?MikeVE3WDM   
  
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[Elecraft] K3 and JT65-HF

[Fred Jensen]

While putting Alpine County on the air for the Cal QSO Party, a couple 
of the crew were running JT65-HF prior to the contest start.  I thought 
I might try it out and need a couple of answers:


1.  What mode do I use?  I run AFSK in DATA A on RTTY, audio goes to 
LINE IN, MIC+LINE is off.


2.  What's the best way to key the K3?  On RTTY, N1MM/MMTTY key the rig 
via the CAT port.


73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2014 Cal QSO Party 4-5 Oct 2014
- www.cqp.org

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Re: [Elecraft] K3 and JT65-HF

[Joe Subich, W4TV]

 1.  What mode do I use?  I run AFSK in DATA A on RTTY, audio goes to
 LINE IN, MIC+LINE is off.

Use DATA A with the same settings ...


2. What's the best way to key the K3? On RTTY, N1MM/MMTTY key the
rig via the CAT port.


WSJT-X can key via software command, RTS or DTR *on a separate port*
or using DXLab Suite's CI-V Commander.  As an alternative you can
use VOX.

73,

   ... Joe, W4TV


On 10/12/2013 2:09 PM, Fred Jensen wrote:

While putting Alpine County on the air for the Cal QSO Party, a couple
of the crew were running JT65-HF prior to the contest start.  I thought
I might try it out and need a couple of answers:

1.  What mode do I use?  I run AFSK in DATA A on RTTY, audio goes to
LINE IN, MIC+LINE is off.

2.  What's the best way to key the K3?  On RTTY, N1MM/MMTTY key the rig
via the CAT port.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2014 Cal QSO Party 4-5 Oct 2014
- www.cqp.org

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Re: [Elecraft] K3 and JT65-HF

[Mike K2MK]

Hi Fred,

You probably mean you use AFSK A for RTTY. For JT65-HF you want DATA A. LINE
IN is correct and MIC+LIN off is correct although I suspect the K3
automatically turns MIC+LIN off in any of the data modes.

I use VOX for all data modes. Never had a problem.

73,
Mike K2MK


k6dgw wrote
 While putting Alpine County on the air for the Cal QSO Party, a couple 
 of the crew were running JT65-HF prior to the contest start.  I thought 
 I might try it out and need a couple of answers:
 
 1.  What mode do I use?  I run AFSK in DATA A on RTTY, audio goes to 
 LINE IN, MIC+LINE is off.
 
 2.  What's the best way to key the K3?  On RTTY, N1MM/MMTTY key the rig 
 via the CAT port.
 
 73,
 
 Fred K6DGW





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[Elecraft] K3 and JT65-HF

[Fred Jensen]

Thanks to all who replied, Mike K2MK got me going.  For the record for 
those like me who totally forgot about this, you have to enable filters 
on a per-mode basis in the K3 Utility.  Figuring that all data modes I'd 
ever operate would be narrow, I didn't enable the SSB filter for Data.


Just made first JT65 QSO, 20W to the tribander.

Thanks again for the help,

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2014 Cal QSO Party 4-5 Oct 2014
- www.cqp.org

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Re: [Elecraft] K3 and JT65/WSPR

[Ian White GM3SEK]

Jim Brown wrote:
On 7/19/2012 3:38 PM, Lance Collister, W7GJ wrote:
 Most of us EME types have sequencers, external preamps, and numerous
 old coaxial relays.

Understood why YOU need the delay in your application, but 99% of us
using digital modes, even JT65, are not doing stuff like that.  I think
it's important not to make things more complicated than they need to be,
and simple VOX works just fine for most stations.

99% of us is far too sweeping.

MANY users of JT modes on VHF - not just on EME, but almost ALL 
*serious* users - are also using external preamps, power amplifiers and 
relatively slow coaxial relays which do require an external sequencer.

That may be less true at 50MHz, where HF and VHF/UHF techniques overlap, 
but the use of external sequencers is far too important to be swept 
away.



-- 

73 from Ian GM3SEK
http://www.ifwtech.co.uk/g3sek
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Re: [Elecraft] K3 and JT65/WSPR

[Bill Frantz]

On 7/19/12 at 12:50, telegrap...@q.com wrote:

I have been wanting to try the JT65 and other modes on 6 
meters.  Thought it would be a simple setup but its not 
working.  Good audio coming from the computer Line out and 
going to the K3 Line in.  set for VOX operation, mic and Line 
set on.  USB is the mode.  Radio will not key up even though 
the computer is generating the audio to it.

It sounds like the audio is not getting into your K3. Try 
checking the settings of:

   MAIN MENU:
  MIC SEL
  MIC+LIN

   CONFIG MENU:
  TX GATE

   MIC gain knob

   I think DATA MD set to DATA A will work better than SSB

GL 73 de Bill, AE6JV
---
Bill Frantz| I like the farmers' market   | Periwinkle
(408)356-8506  | because I can get fruits and | 16345 
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Re: [Elecraft] K3 and JT65

[Don Wilhelm]

Larry,

As others have said, use DATA A, and if you are using an interface box, 
make sure it is plugged to give you line level output.  I suspect that 
you have microphone level audio from an interface box and you are trying 
to use the K3 line level input.

You must have enough audio drive to show 4 bars on the K3 ALC meter with 
the 5th bar flickering.  Most interfaces provide microphone level output 
which is way too low for the K3 Line input.  See the documentation for 
your interface box to see how to set it for line level.

Using DATA A (data submode) will set the compression to zero and bypass 
the audio equalization - so your settings for SSB will be preserved when 
you return to SSB mode.  When switching to DATA mode, you could be in 
any of the 4 data submodes, make sure you are set to DATA A.

73,
Don W3FPR

On 7/19/2012 11:34 PM, telegrap...@q.com wrote:
 Well i don't know what happened.  I am still not getting any meter 
 indications and nothing tells me i'm getting any power out.  However, while 
 playing around on 6 a fellow over in Texas called me on JT65.  We did make a 
 couple of exchanges but did not finish the QSO.  I must have been radiating 
 microwatts?  Anyway when he called me back it scared the heck out of me 
 because i knew it wasn't possible.

 Think i'll go watch TV and give this up.  It's getting to me cause i'm not 
 making any progress and my mind (what little of it is left) is getting foggy.

 Larry
 W0OGH

 Trivia no one wants to hear
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[Elecraft] K3 and JT65/WSPR

[telegrapher]

I have been wanting to try the JT65 and other modes on 6 meters.  Thought it 
would be a simple setup but its not working.  Good audio coming from the 
computer Line out and going to the K3 Line in.  set for VOX operation, mic and 
Line set on.  USB is the mode.  Radio will not key up even though the computer 
is generating the audio to it.  It should not require any other controls should 
it?  I've tried different levels from the computer line out, still doesn't key. 
 I've cranked the Mic gain both directions, still doesn't key up.  What is it 
that i'm not doing right?

Been some good propagation on 6 with numerous JT65 signals and i'd like to 
participate with these two modes.

Larry
W0OGH

back on the list again
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Re: [Elecraft] K3 and JT65/WSPR

[Joe Subich, W4TV]

   USB is the mode.

Use DATA A - set audio input to Line IN once you have selected DATA A,
then adjust VOX gain to trip when the JT65 audio is being generated.

You will have better results if you use a serial port or USB to serial
converter with a single transistor driver on the RTS line for PTT as
teh JT65 software switches the transmitter on one second before the
tones start to avoid clipping the initial tones or hot switching any
amplifier/preamplifier relays.


73,

... Joe, W4TV


On 7/19/2012 3:50 PM, telegrap...@q.com wrote:
 I have been wanting to try the JT65 and other modes on 6 meters.
 Thought it would be a simple setup but its not working.  Good audio
 coming from the computer Line out and going to the K3 Line in.  set
 for VOX operation, mic and Line set on.  USB is the mode.  Radio will
 not key up even though the computer is generating the audio to it.
 It should not require any other controls should it?  I've tried
 different levels from the computer line out, still doesn't key.  I've
 cranked the Mic gain both directions, still doesn't key up.  What is
 it that i'm not doing right?

 Been some good propagation on 6 with numerous JT65 signals and i'd
 like to participate with these two modes.

 Larry W0OGH

 back on the list again
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Re: [Elecraft] K3 and JT65/WSPR

[Jim Brown]

On 7/19/2012 1:24 PM, Joe Subich, W4TV wrote:
 You will have better results if you use a serial port or USB to serial
 converter with a single transistor driver on the RTS line for PTT as
 teh JT65 software switches the transmitter on one second before the
 tones start to avoid clipping the initial tones or hot switching any
 amplifier/preamplifier relays.

Joe,

Doesn't the K3's TXDELAY setting take care of that?  I'm SURE that it 
does for the power amp, and I'd be very surprised if it wasn't also 
implemented to protect its own relays.

73, Jim K9YC

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Re: [Elecraft] K3 and JT65/WSPR

[Lance Collister, W7GJ]

Hello Jim,

Most of us EME types have sequencers, external preamps, and numerous old 
coaxial 
relays.  While the TX delay built into the K3 may be fine for its own 
switching, and 
even for modern QSK amplifiers, there is a great amount of relief knowing that 
WSJT 
will switch everything well ahead of the start of its full power, all-out, RF 
transmit cycle ;-)VY 73, Lance


  On 7/19/2012 9:20 PM, Jim Brown wrote:
 On 7/19/2012 1:24 PM, Joe Subich, W4TV wrote:
 You will have better results if you use a serial port or USB to serial
 converter with a single transistor driver on the RTS line for PTT as
 teh JT65 software switches the transmitter on one second before the
 tones start to avoid clipping the initial tones or hot switching any
 amplifier/preamplifier relays.
 Joe,

 Doesn't the K3's TXDELAY setting take care of that?  I'm SURE that it
 does for the power amp, and I'd be very surprised if it wasn't also
 implemented to protect its own relays.

 73, Jim K9YC

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-- 
Lance Collister, W7GJ
(ex WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8, E51SIX, 3D2LR, 5W0GJ)
P.O. Box 73
Frenchtown, MT   59834-0073
USA
TEL: (406) 626-5728
QTH: DN27ub
URL: http://www.bigskyspaces.com/w7gj
Windows Messenger: w...@hotmail.com
Skype: lanceW7GJ
2m DXCC #11/6m DXCC #815

Interested in 6m EME?  Ask me about subscribing to the Magic Band EME
email group, or just fill in the request box at the bottom of my web
page (above)!

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Re: [Elecraft] K3 and JT65/WSPR

[Jim Brown]

On 7/19/2012 3:38 PM, Lance Collister, W7GJ wrote:
 Most of us EME types have sequencers, external preamps, and numerous 
 old coaxial relays. 

Understood why YOU need the delay in your application, but 99% of us 
using digital modes, even JT65, are not doing stuff like that.  I think 
it's important not to make things more complicated than they need to be, 
and simple VOX works just fine for most stations.

73, Jim K9YC

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[Elecraft] Elecraft] K3 and JT65/WSPR

[Adrian]

The K3 TX delay has no control over when the JT65 tones commence.

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jim Brown
Sent: Friday, 20 July 2012 7:21 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 and JT65/WSPR

On 7/19/2012 1:24 PM, Joe Subich, W4TV wrote:
 You will have better results if you use a serial port or USB to serial 
 converter with a single transistor driver on the RTS line for PTT as 
 teh JT65 software switches the transmitter on one second before the 
 tones start to avoid clipping the initial tones or hot switching any 
 amplifier/preamplifier relays.

Joe,

Doesn't the K3's TXDELAY setting take care of that?  I'm SURE that it does
for the power amp, and I'd be very surprised if it wasn't also implemented
to protect its own relays.

73, Jim K9YC

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[Elecraft] K3 and JT65

[telegrapher]

Well i don't know what happened.  I am still not getting any meter indications 
and nothing tells me i'm getting any power out.  However, while playing around 
on 6 a fellow over in Texas called me on JT65.  We did make a couple of 
exchanges but did not finish the QSO.  I must have been radiating microwatts?  
Anyway when he called me back it scared the heck out of me because i knew it 
wasn't possible.  

Think i'll go watch TV and give this up.  It's getting to me cause i'm not 
making any progress and my mind (what little of it is left) is getting foggy.

Larry
W0OGH

Trivia no one wants to hear
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[Elecraft] K3 and JT65 - It works - Thanks

[Jim Miller KG0KP]

Thanks to all who sent me information and suggestions.  It has been several 
days and I just now got a chance to get to the radio (note 0115L) after a 
week or so.

In going through all the suggestions and checking and changing some I found 
that my RF gain was cranked down and all of a sudden I had so much signal I 
had to back off everything.

Works great, now all I have to do is stop screwing up when I am trying to 
make a contact that doesn't show me as a lid.  Getting the sequence right 
and killing it when the guy goes back to somebody else and not sending the 
same message again by mistake or not paying attention and starting my 
response too far up into the time frame.  I know I haven't tried all the 
screw-up's yet but I am sure I will at some time in the near future.  Fun 
times are here again.

THANKS everyone and there were more than several of you (and nobody said a 
word about the RF gain).  I guess I wasn't supposed to be so bad off as to 
not realize that.

73, de Jim KG0KP 


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Re: [Elecraft] K3 and JT65

[Jon K Hellan]

On 04/26/2012 11:41 PM, Tony Estep wrote:
 On Thu, Apr 26, 2012 at 4:14 PM, Don Wilhelmw3...@embarqmail.com  wrote:

 ...use Atomic Clock Sync...

 ===
 Or with some wrangling you can bend Windows 7 to your will. As you
 doubtless know already, you can sync it manually whenever you want by
 right-clicking the time/date display at the right end of the taskbar. You
 can make it auto-sync more frequently by following the steps found here:

 http://www.pretentiousname.com/timesync/index.html

 Note that according to the author of this page, the registry value called
 SpecialPollInterval apparently does not do what you want. I am one of those
 who believed that it would, but evidently it doesn't. Anyway, the
 directions posted are kinda ugly but they definitely worked for me.


You can get NTP for Windows from here:
http://www.meinberg.de/english/sw/ntp.htm

NTP is the internet standard for time sync. The server synchs as often 
as necessary, determined by the algorithms of David Mills W3HCF.

If your computer is continuously on, and you have a good internet 
connection, it should keep you within a few tens of microseconds of 
correct time.

Jon LA4RT

 Tony KT0NY
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Re: [Elecraft] K3 and JT65

[Mike K2MK]

Hi Jim,

I don't recall there ever being a mod for line out level. You might be
thinking of the mod to increase the IF output for the P3.

In your case, in addition to adjusting CONFIG:LIN OUT, be sure to check your
left/right balance on your PC input. I'm pretty sure that the signal will
only be present on the left channel. The SUB RX (if supplied and turned on)
comes out on the right channel. Also make sure you are using a stereo cable
and that it is fully inserted. Also, make sure your line out is held at a
constant level by setting CONFIG:LIN OUT to NOR and not PHONES. The 1
button toggles between NOR and PHONES. Please read page 20 in the manual.

Last, and probably unlikely, make sure your PC is really utilizing the line
in. I remember a similar posting from a couple of years ago where the PC was
decoding only strong PSK and RTTY signals. The problem was that there was no
valid audio connection between the K3 and PC and the laptop PC in use was
merely picking up the stronger signals on its built-in microphone.

73,
Mike K2MK


hf4me wrote
 
 OK, I think this may have been discussed but I cannot find it.
 
 Seems like I remember a gain mod for the K3 line output    Maybe it
 was 
 something else but I wasn't interested at the time.
 
 I am trying to run JT65-HF for the first time and I find that even with
 the 
 gain in the program at max that the input to the PC from the K3 line out
 is 
 not enough except for the strongest signals.  I have the gains in the PC
 set 
 to 100% for all.  HRD and DM780 for all of the digital modes works just 
 fine. as it is.
 
 Thanks es 73, de Jim KG0KP 
 


--
View this message in context: 
http://elecraft.365791.n2.nabble.com/K3-and-JT65-tp7501627p7502553.html
Sent from the Elecraft mailing list archive at Nabble.com.
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Re: [Elecraft] K3 and JT65

[Joe Subich, W4TV]

Jim,

The K3 has plenty of output for JT65-HF if your sound card is set-up
properly.  My K3 never leaves the default Line Out = 10.  My sound card
input level in Windows 7 is 90% and the manual input level (voltage
divider on the input) is at 1:00 (60%).

Make sure Line Out is set to NOR not =PHONES and JT65-HF is configured
for the line input from your sound card - not mic which could mean
acoustic coupling between the K3 speaker and a mic in the computer.

73,

... Joe, W4TV


On 4/24/2012 2:20 AM, Jim Miller KG0KP wrote:
 OK, I think this may have been discussed but I cannot find it.

 Seems like I remember a gain mod for the K3 line output    Maybe it was
 something else but I wasn't interested at the time.

 I am trying to run JT65-HF for the first time and I find that even with the
 gain in the program at max that the input to the PC from the K3 line out is
 not enough except for the strongest signals.  I have the gains in the PC set
 to 100% for all.  HRD and DM780 for all of the digital modes works just
 fine. as it is.

 Thanks es 73, de Jim KG0KP


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Re: [Elecraft] K3 and JT65

[Jim Miller KG0KP]

Yes, my cfglineout was set to nor 005 and turning it up to 20 brought the 
signal up considerably and continuing up made snow appear in the background 
so backed it down.

However, and this is not a K3 problem, If I back down the gain in the 
program to center it lowers the signals as well and I don't know where it 
should actually be set.  Using 20 but wondering if I am missing some I 
should be hearing.  I will have to play with it unless somebody has an 
opinion on the readings I should have.  They say -15 and up some.  Is that 
supposed to be normal or is it way too low.

This has gone beyond the K3 now so I will end this line.  Pleae respond 
direct to not use up any more K3 time for what is now off topic.

Thanks everyone, de Jim KG0KP 


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Re: [Elecraft] K3 and JT65

[Jim Brown]

On 4/26/2012 10:31 AM, Jim Miller KG0KP wrote:
 Yes, my cfglineout was set to nor 005 and turning it up to 20 brought the
 signal up considerably and continuing up made snow appear in the background
 so backed it down.

Note that in Windoze, there are TWO Sound Mixers.  The RECORD mixer 
Selects the input to the computer that is used to DECODE a digital 
signal.  The PLAYBACK mixer MIXES various computer sources and sends 
them to the radio as modulation.  The two mixers are accesses from the 
Options tab.

The Master Fader in the Playback mixer should be set to full output.  
The WAV Fader should be set to roughly half way up. All the other faders 
should be muted.

The Record Mixer should select the input that you're using. As someone 
else suggested, make sure that the internal mike is not switched on. Go 
to the Mic section, select Advanced or any other tab around the Mic 
fader, and check the settings.

As others have suggested, when you have JT65 sending TX tones, you 
should hear them if you plug headphones into the output (and on laptop 
speakers, if you're using a laptop.  If you hear the tones, proceed to 
the radio.

At the radio, you need SOMETHING to make it transmit.  Some use PTT, but 
I use VOX.  One common simple thing is that you may need to adjust the 
VOX level to make it transmit. That's on the CONFIG short push menu.   
To adjust it, make sure the computer is sending tones and advance the 
VOX gain until you start transmitting.  Also, you may need to increase 
the Line Input gain. When you're in a Digital mode, the front panel Mic 
Gain pot adjusts the Line Input gain.

There are MANY guys using a K3 for JT65, and everything works great once 
you get going.  I suspect your problem is something simple.

73, Jim K9YC
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Re: [Elecraft] K3 and JT65

[iain macdonnell - N6ML]

On Thu, Apr 26, 2012 at 10:31 AM, Jim Miller KG0KP
jimmil...@stl-online.net wrote:
 Yes, my cfglineout was set to nor 005 and turning it up to 20 brought the
 signal up considerably and continuing up made snow appear in the background
 so backed it down.

Noise on the waterfall is normal - it's the same noise you can hear
with your ears.


 However, and this is not a K3 problem, If I back down the gain in the
 program to center it lowers the signals as well and I don't know where it
 should actually be set.  Using 20 but wondering if I am missing some I
 should be hearing.  I will have to play with it unless somebody has an
 opinion on the readings I should have.  They say -15 and up some.  Is that
 supposed to be normal or is it way too low.

With JT65-HF, the recommendation is to adjust the audio levels until
you see approximately 0 (mid-scale) on the Audio Input Levels
meter(s) when receiving only noise. When you're receiving signals, the
meter should go up from 0 (although maybe not by much, if it's a weak
signal).

Signal reports are given in dB relative to a sampling of the entire
audio passband noise - nothing to do with the Audio Input Level
numbers really.

73,

~iain / N6ML
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Re: [Elecraft] K3 and JT65

[Jim Brown]

On 4/26/2012 10:59 AM, Jim Brown wrote:
 There are MANY guys using a K3 for JT65

One VERY important thing I forgot to mention is the accuracy of your 
computer's clock. All of the WSJT protocols signals start and stop at 
precise times -- JT65 transmits from 1 second after the minute to 48 
seconds after -- and the decoder starts working immediately thereafter. 
If your clock is more than a few seconds off, you'll get fewer decodes 
and fewer stations will decode your signal. As timing errors extend much 
past 4-5 seconds, neither you or the other station is likely to decode.

You CAN set your clock by hand using WWV, but a better way is software 
that uses the NTP protocol to do it automatically.  I've recently been 
using a program called Net Time.

73, Jim K9YC
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Re: [Elecraft] K3 and JT65

[Don Wilhelm]

Another easy to use application for setting the Windows clock 
automatically is to use Atomic Clock Sync - it is freeware and available 
from http://www.worldtimeserver.com/atomic-clock/.
You can configure it to adjust the time daily or when Windows is 
started, and/or  manually initiated by clicking the Ping Now button.

73,
Don W3FPR

On 4/26/2012 4:47 PM, Jim Brown wrote:
 On 4/26/2012 10:59 AM, Jim Brown wrote:
 There are MANY guys using a K3 for JT65
 One VERY important thing I forgot to mention is the accuracy of your
 computer's clock. All of the WSJT protocols signals start and stop at
 precise times -- JT65 transmits from 1 second after the minute to 48
 seconds after -- and the decoder starts working immediately thereafter.
 If your clock is more than a few seconds off, you'll get fewer decodes
 and fewer stations will decode your signal. As timing errors extend much
 past 4-5 seconds, neither you or the other station is likely to decode.

 You CAN set your clock by hand using WWV, but a better way is software
 that uses the NTP protocol to do it automatically.  I've recently been
 using a program called Net Time.

 73, Jim K9YC
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Re: [Elecraft] K3 and JT65

[Tony Estep]

On Thu, Apr 26, 2012 at 4:14 PM, Don Wilhelm w3...@embarqmail.com wrote:

 ...use Atomic Clock Sync...

===
Or with some wrangling you can bend Windows 7 to your will. As you
doubtless know already, you can sync it manually whenever you want by
right-clicking the time/date display at the right end of the taskbar. You
can make it auto-sync more frequently by following the steps found here:

http://www.pretentiousname.com/timesync/index.html

Note that according to the author of this page, the registry value called
SpecialPollInterval apparently does not do what you want. I am one of those
who believed that it would, but evidently it doesn't. Anyway, the
directions posted are kinda ugly but they definitely worked for me.

Tony KT0NY
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[Elecraft] K3 and JT65

[Jim Miller KG0KP]

OK, I think this may have been discussed but I cannot find it.

Seems like I remember a gain mod for the K3 line output    Maybe it was 
something else but I wasn't interested at the time.

I am trying to run JT65-HF for the first time and I find that even with the 
gain in the program at max that the input to the PC from the K3 line out is 
not enough except for the strongest signals.  I have the gains in the PC set 
to 100% for all.  HRD and DM780 for all of the digital modes works just 
fine. as it is.

Thanks es 73, de Jim KG0KP 


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Re: [Elecraft] K3 and JT65

[iain macdonnell - N6ML]

Jim,

What do you have CONFIG:LIN OUT set to? I usually run it around 20.

73,

~iain / N6ML



On Mon, Apr 23, 2012 at 11:20 PM, Jim Miller KG0KP
jimmil...@stl-online.net wrote:
 OK, I think this may have been discussed but I cannot find it.

 Seems like I remember a gain mod for the K3 line output    Maybe it was
 something else but I wasn't interested at the time.

 I am trying to run JT65-HF for the first time and I find that even with the
 gain in the program at max that the input to the PC from the K3 line out is
 not enough except for the strongest signals.  I have the gains in the PC set
 to 100% for all.  HRD and DM780 for all of the digital modes works just
 fine. as it is.

 Thanks es 73, de Jim KG0KP


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Re: [Elecraft] K3 and JT65-HF

[John Lemay]

You will also need a means of making the K3 go into transmit. A
work-around would be to use VOX.

John G4ZTR

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Don Wilhelm
Sent: 18 October 2011 22:22
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 and JT65-HF

Chuck,

It is almost that simple.  If you have a desktop PC, is that simple, 
but you connect the K3 line out to the soundcard line-in and the K3 line 
in to the soundcard line out.  The levels should be within the range of 
adjustment using the K3 controls as well as the soundcard volume 
cotrols on the computer.

With a laptop, controlling the levels may be more complicated, and may 
require some resistive dividers to work properly.  For instance, the 
laptop headphone output may be greater than what is normally considered 
line level - although if the computer is expecting powered speakers, 
that one *may* be OK.  If you have a line out jack from the computer, 
use that instead of the headphone output.

Connecting the K3 line out to the laptop Mic In, may prove to be 
troublesome, although some laptops have a software setting that allows 
either line level or mic level using the same jacks - if that is your 
case, set it for line level.  If your computer is stuck with only mic 
level input, you may have to reduce the K3 line out signal level by 
about a factor of 10.  A 10k resistor in series with the K3 output line 
plus a 1k resistor on the computer side of the 10k resistor from the AF 
line to the AF return (usually the shield).  Place that voltage divider 
close to the computer end to keep noise pickup on that signal line to a 
minimum.

Remember that the audio input level to the K3 is adjusted differently 
than the traditional wisdom for other transceivers - use TX TEST to 
set your input level (no RF will be transmitted), use DATA A submode, 
and adjust the Line In level in the K3 (and/or the output volume and WAV 
level in the computer) so the ALC meter illuminates the 4th bar with the 
5th bar barely blinking.  The K3 ALC action does not begin until the 
audio level hits the 5th bar.

Good luck with your connections and with JT65.

73,
Don W3FPR

On 10/18/2011 2:21 PM, Charles Eklund wrote:
 I'm a new K3 user and love it. I'm also getting back into ham radio after
20+ years of little activity. So, all the new digital modes are new to me.
I'm going to try JT65 and am trying to figure out the connections between my
computer and the K3. Is it as simple as a connection from the earphones on
my computer to the Line In on the K3 and the microphone on the computer to
the Line Out on the K3?

 Thanks.

 Chuck, W0BBO

 Sent from my iPad
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Re: [Elecraft] K3 and JT65-HF

[Jim Brown]

On 10/19/2011 12:12 AM, John Lemay wrote:
 You will also need a means of making the K3 go into transmit. A
 work-around would be to use VOX.

Not a work-around at all -- that works VERY well.  I do a LOT of 
contesting, and a fair amount of FSK441, JT65, and ISCAT, and I've never 
felt the need for anything else.

73, Jim K9YC
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[Elecraft] K3 and JT65-HF

[Charles Eklund]

I'm a new K3 user and love it. I'm also getting back into ham radio after 20+ 
years of little activity. So, all the new digital modes are new to me. I'm 
going to try JT65 and am trying to figure out the connections between my 
computer and the K3. Is it as simple as a connection from the earphones on my 
computer to the Line In on the K3 and the microphone on the computer to the 
Line Out on the K3? 

Thanks. 

Chuck, W0BBO

Sent from my iPad
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Re: [Elecraft] K3 and JT65-HF

[Don Wilhelm]

Chuck,

It is almost that simple.  If you have a desktop PC, is that simple, 
but you connect the K3 line out to the soundcard line-in and the K3 line 
in to the soundcard line out.  The levels should be within the range of 
adjustment using the K3 controls as well as the soundcard volume 
cotrols on the computer.

With a laptop, controlling the levels may be more complicated, and may 
require some resistive dividers to work properly.  For instance, the 
laptop headphone output may be greater than what is normally considered 
line level - although if the computer is expecting powered speakers, 
that one *may* be OK.  If you have a line out jack from the computer, 
use that instead of the headphone output.

Connecting the K3 line out to the laptop Mic In, may prove to be 
troublesome, although some laptops have a software setting that allows 
either line level or mic level using the same jacks - if that is your 
case, set it for line level.  If your computer is stuck with only mic 
level input, you may have to reduce the K3 line out signal level by 
about a factor of 10.  A 10k resistor in series with the K3 output line 
plus a 1k resistor on the computer side of the 10k resistor from the AF 
line to the AF return (usually the shield).  Place that voltage divider 
close to the computer end to keep noise pickup on that signal line to a 
minimum.

Remember that the audio input level to the K3 is adjusted differently 
than the traditional wisdom for other transceivers - use TX TEST to 
set your input level (no RF will be transmitted), use DATA A submode, 
and adjust the Line In level in the K3 (and/or the output volume and WAV 
level in the computer) so the ALC meter illuminates the 4th bar with the 
5th bar barely blinking.  The K3 ALC action does not begin until the 
audio level hits the 5th bar.

Good luck with your connections and with JT65.

73,
Don W3FPR

On 10/18/2011 2:21 PM, Charles Eklund wrote:
 I'm a new K3 user and love it. I'm also getting back into ham radio after 20+ 
 years of little activity. So, all the new digital modes are new to me. I'm 
 going to try JT65 and am trying to figure out the connections between my 
 computer and the K3. Is it as simple as a connection from the earphones on my 
 computer to the Line In on the K3 and the microphone on the computer to the 
 Line Out on the K3?

 Thanks.

 Chuck, W0BBO

 Sent from my iPad
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Re: [Elecraft] K3 and JT65-HF

[Jim Brown]

On 10/18/2011 11:21 AM, Charles Eklund wrote:
 I'm a new K3 user and love it. I'm also getting back into ham radio after 20+ 
 years of little activity. So, all the new digital modes are new to me. I'm 
 going to try JT65 and am trying to figure out the connections between my 
 computer and the K3. Is it as simple as a connection from the earphones on my 
 computer to the Line In on the K3 and the microphone on the computer to the 
 Line Out on the K3?

Use the Line In and  Line Out of the K3 to interface with your sound 
card.  Same as for any digital modes that use a sound card to generate 
and decode the digital modulation.

See http://audiosystemsgroup.com/HamInterfacing.ppt   and for the same 
thing in words, the chapter on Solving Problems In The Shack that is 
part of

http://audiosystemsgroup.com/RFI-Ham.pdf

73, Jim Brown K9YC
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[Elecraft] K3 Saving JT65-HF freq mode in memories

[Mike K2MK]

I am just beginning to play around with JT65-HF and I saved the various HF
frequencies to memory positions using the K3 Frequency Memory Editor. When
choosing the mode using the memory program, DATA is one of the choices. But
there are no specific data mode choices. As a result, the data modes were
always stored as AFSK A. I want DATA A.

In an attempt to correct this I went to each of the saved frequencies,
manually changed the data mode to DATA A and pressed V-M to overwrite the
memory. This did not fix the problem. Each memory position still came back
as AFSK A.

Any ideas.

73,
Mike K2MK

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