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k3 and mmtty setup

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km5ps

k3 and mmtty setup

Hello- I am trying to get MMTTY and my k3 working. I have found a setup
page for k3 and mmtty and have went threw the pages twice and have all
of the setting as stated at http://www.n3me.net/elecraftk3andmmtty.htm.
My rig will key, but not for sure if it is transmitting rtty. The pwr
meter does not ever move from zero. I have the pwr on rig set at 50w.
The instruction at the website listed above says does not state that in
the k3 config menu. I have found other places that state k3 PPT-KEY
should be set to DTR-PTT. But that is not an option in the config menu
of the k3 on the PTT-KEY menu. Anyone who has this working with mmtty
could you give your setting for the k3 and mmtty program. I had this
working n1mm once, but then it quit working for some reason. Also
should mention that I have a mon cable from k3 line in to sound card
line out and a stereo cable from k3 line out to line in of sound card.

Thanks for the help

John km5ps
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Iain MacDonnell - N6ML-2

Re: k3 and mmtty setup

On Sat, Jul 23, 2011 at 4:08 PM, km5ps <[hidden email]> wrote:
> Hello- I am trying to get MMTTY and my k3 working. I have found a setup
> page for k3 and mmtty and have went threw the pages twice and have all
> of the setting as stated at http://www.n3me.net/elecraftk3andmmtty.htm.
> My rig will key, but not for sure if it is transmitting rtty. The pwr
> meter does not ever move from zero. I have the pwr on rig set at 50w.

One critical setting I don't see mentioned in that page is the line-in
level, which is adjusted using the MIC knob on the K3 front panel
(when MAIN:MIC-SEL is set to "line-in"). Try adjusting that while
MMTTY is transmitting (you can do this with the K3 in TX TEST mode),
and adjust for 5 bars on the ALC meter.

If that doesn't do it, make sure that there are tones coming out of
the sound card, by temporarily connecting speakers.

GL...

~iain / N6ML
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Don Wilhelm-4

Re: k3 and mmtty setup

In reply to this post by km5ps

John,

I just looked at the instructions on that link. One thing that is not
mentioned on the K3 setup is that you must set the K3 mark frequency and
shift to match the mark frequency and shift settings in MMTTY - to do
that, while in DATA A mode, hold the PITCH button and rotate VFO A to
indicate 2125 - 170.
Also check that you are on LSB for DATA mode.

As far as PTT, set CONFIG: PTT-KEY to DTR - off. The K3 TX LED should
come on when MMTTY is transmitting (set VOX off).

I believe those instructions have an error - it seems to tell you to set
"Ways to send" to Character out - which would send KY commands with
ASCII text to the K3. I believe "Ways to send" should be set to Line
Out instead.
The K3 will not accept an ASCII string in AFSK A data mode - but will in
FSK-D data sub-mode. Perhaps someone more familiar with MMTTY than I
can comment on why "Ways to send" should be set to Character Out.

You can use a stereo cable between the computer and K3 line in jack -
yes, the jack is marked mono, because only the left channel is
connected, but the jack is stereo. There may be a situation with your
computer where it does not like the mono plug in the line out, so try
using a stereo cable. You can plug the cable from line-out into an
audio amplifier to see if you are getting sound from the line out.

I hope that helps.

On 7/23/2011 12:08 PM, km5ps wrote:

> Hello- I am trying to get MMTTY and my k3 working. I have found a setup
> page for k3 and mmtty and have went threw the pages twice and have all
> of the setting as stated at http://www.n3me.net/elecraftk3andmmtty.htm.
> My rig will key, but not for sure if it is transmitting rtty. The pwr
> meter does not ever move from zero. I have the pwr on rig set at 50w.
> The instruction at the website listed above says does not state that in
> the k3 config menu. I have found other places that state k3 PPT-KEY
> should be set to DTR-PTT. But that is not an option in the config menu
> of the k3 on the PTT-KEY menu. Anyone who has this working with mmtty
> could you give your setting for the k3 and mmtty program. I had this
> working n1mm once, but then it quit working for some reason. Also
> should mention that I have a mon cable from k3 line in to sound card
> line out and a stereo cable from k3 line out to line in of sound card.
>
>

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Joe Subich, W4TV-4

Re: k3 and mmtty setup

On 7/23/2011 2:30 PM, Don Wilhelm wrote:
> I believe those instructions have an error - it seems to tell you to set
> "Ways to send" to Character out - which would send KY commands with
> ASCII text to the K3. I believe "Ways to send" should be set to Line
> Out instead.

This is a case where English is not the programmer's first language.

"Way to send" is referring to sending characters as at time, word at
a time (hold characters until a space is entered), or line at a time
(buffer until an "enter" <CR> character is typed). "Character Out"
(letter at a time) is the default for MMTTY but some operators prefer
to enable diddle (check LTR in the Diddle box on the Set-up TX tab)
and select "word" or "line" to minimize the chance that noise will
corrupt characters within a word/line.

73,

... Joe, W4TV
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Don Wilhelm-4

Re: k3 and mmtty setup

In reply to this post by km5ps

Yes and thanks for noticing, I did mean AFSK A, sorry for the confusion
- the mark frequency will not show in DATA A.
I am copying the reflector on this email so all can see the correction.

On 7/23/2011 3:13 PM, K2MK wrote:
> Hi Don,
>
> Don't you mean "AFSK A" for RTTY, not "DATA A".
> 73,
> Mike K2MK
>
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Merv Schweigert

P3 for other uses

Has anyone used the P3 for an "external" signal finding or noise
finding tool?
I was wondering if a tuned circuit for 1.8 mhz fed into the input
with the IF set for 1.8 would be enough to show any signal?

I need to locate a signal on 160 meters that is caused by two BC
stations mixing due to a connection being made when the wind
blows and something contacts and creates a "diode" in my antenna/ground
system.

Thanks 73 Merv K9FD/KH6
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km5ps

Re: k3 and mmtty setup

In reply to this post by Don Wilhelm-4

On 7/23/2011 1:30 PM, Don Wilhelm wrote:

> John,
>
> I just looked at the instructions on that link. One thing that is not
> mentioned on the K3 setup is that you must set the K3 mark frequency
> and shift to match the mark frequency and shift settings in MMTTY - to
> do that, while in DATA A mode, hold the PITCH button and rotate VFO A
> to indicate 2125 - 170.
> Also check that you are on LSB for DATA mode.
>
> As far as PTT, set CONFIG: PTT-KEY to DTR - off. The K3 TX LED
> should come on when MMTTY is transmitting (set VOX off).
>
> I believe those instructions have an error - it seems to tell you to
> set "Ways to send" to Character out - which would send KY commands
> with ASCII text to the K3. I believe "Ways to send" should be set to
> Line Out instead.
> The K3 will not accept an ASCII string in AFSK A data mode - but will
> in FSK-D data sub-mode. Perhaps someone more familiar with MMTTY
> than I can comment on why "Ways to send" should be set to Character Out.
>
> You can use a stereo cable between the computer and K3 line in jack -
> yes, the jack is marked mono, because only the left channel is
> connected, but the jack is stereo. There may be a situation with your
> computer where it does not like the mono plug in the line out, so try
> using a stereo cable. You can plug the cable from line-out into an
> audio amplifier to see if you are getting sound from the line out.
>
> I hope that helps.
>
>
>
> On 7/23/2011 12:08 PM, km5ps wrote:
>> Hello- I am trying to get MMTTY and my k3 working. I have found a setup
>> page for k3 and mmtty and have went threw the pages twice and have all
>> of the setting as stated at http://www.n3me.net/elecraftk3andmmtty.htm.
>> My rig will key, but not for sure if it is transmitting rtty. The pwr
>> meter does not ever move from zero. I have the pwr on rig set at 50w.
>> The instruction at the website listed above says does not state that in
>> the k3 config menu. I have found other places that state k3 PPT-KEY
>> should be set to DTR-PTT. But that is not an option in the config menu
>> of the k3 on the PTT-KEY menu. Anyone who has this working with mmtty
>> could you give your setting for the k3 and mmtty program. I had this
>> working n1mm once, but then it quit working for some reason. Also
>> should mention that I have a mon cable from k3 line in to sound card
>> line out and a stereo cable from k3 line out to line in of sound card.
>>
>>

Thanks to everyone who responded. I have it working now. The rig is
putting out 50w and I can hear the rtty sound coming out of speakers.
Now just have to get it working with n1mm. Thanks again to all..

73's
John
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Vic Rosenthal

Re: P3 for other uses

In reply to this post by Merv Schweigert

Yes, it would probably work. But I recall reading a note from Eric that there is no static
protection for the 'antenna' input and it is /very/ easy to blow the front end connecting
it to external things -- so be careful.

On 7/23/2011 2:56 PM, Merv Schweigert wrote:

> Has anyone used the P3 for an "external" signal finding or noise
> finding tool?
> I was wondering if a tuned circuit for 1.8 mhz fed into the input
> with the IF set for 1.8 would be enough to show any signal?
>
> I need to locate a signal on 160 meters that is caused by two BC
> stations mixing due to a connection being made when the wind
> blows and something contacts and creates a "diode" in my antenna/ground
> system.
>
> Thanks 73 Merv K9FD/KH6
> ______________________________________________________________
> 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

--
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco/
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N5GE

Re: P3 for other uses

In reply to this post by Merv Schweigert

I have considered using the P3 with my mobile K3 for noise hunting, but my
thought was to use it with a K3, not with a direct input to the P3 from an
antenna. I think that might be a good idea if you ran across a strong signal.

73,
Tom
Amateur Radio Operator N5GE
ARRL Lifetime Member
QCWA Lifetime Member

On Sat, 23 Jul 2011 11:56:35 -1000, Merv Schweigert <[hidden email]> wrote:

>Has anyone used the P3 for an "external" signal finding or noise
>finding tool?
>I was wondering if a tuned circuit for 1.8 mhz fed into the input
>with the IF set for 1.8 would be enough to show any signal?
>
>I need to locate a signal on 160 meters that is caused by two BC
>stations mixing due to a connection being made when the wind
>blows and something contacts and creates a "diode" in my antenna/ground
>system.
>
>Thanks 73 Merv K9FD/KH6
>______________________________________________________________
>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

Amateur Radio Operator N5GE

Alan Bloom

Re: P3 for other uses

In reply to this post by Vic Rosenthal

There actually is an undocumented feature that makes it easy to tune the
P3 to any frequency in its range (a couple hundred kHz to 22 MHz or so).
In the "Xcvr Sel" MENU item, select the last item in the list (labeled 0
Hz). The indicated frequency is now the actual input frequency. The
tuning rate depends on the SPAN. Select 200 kHz span for fast tuning or
a narrow span for fine tuning.

However...

On Sat, 2011-07-23 at 19:55 -0700, Vic K2VCO wrote:
> Yes, it would probably work. But I recall reading a note from Eric that there is no static
> protection for the 'antenna' input and it is /very/ easy to blow the front end connecting
> it to external things -- so be careful.

That's right. If you do this I strongly recommend you put a pair of
back-to-back diodes in parallel with the input to protect it from static
discharge. Eric blew up an RF input board when he was walking around
the roof of the factory with a P3 looking for the source of some RF
interference. Apparently he touched the whip antenna he was using to
something metal which caused a static zap.

If you don't want to modify the P3 you could wire up a plug-in diode
protector using a BNC T connector that can then be disconnected when you
want to use the P3 with a K3 again. That will also prevent the diodes
from degrading the P3's dynamic range in normal K3 mode.

Alan N1AL

> On 7/23/2011 2:56 PM, Merv Schweigert wrote:
> > Has anyone used the P3 for an "external" signal finding or noise
> > finding tool?
> > I was wondering if a tuned circuit for 1.8 mhz fed into the input
> > with the IF set for 1.8 would be enough to show any signal?
> >
> > I need to locate a signal on 160 meters that is caused by two BC
> > stations mixing due to a connection being made when the wind
> > blows and something contacts and creates a "diode" in my antenna/ground
> > system.
> >
> > Thanks 73 Merv K9FD/KH6