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FSK problem with my K3

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n2uz

FSK problem with my K3

Hi all,

First of all, I prefer to use FSK instead of AFSK. ASFK works fine.

My problem is that I have the wrong polarity coming out of my rtty
program (fldigi under linux). It is hooked up to pin 1 of the ACC 15 pin
connector. It is changing polarity fine (looking at it with my oscope.
How can I invert it in the K3? I tried the CONFIG param FSK POL and
that does not do it. I read an email on the archives saying that the
config item FSK POL does not work. If that is the case, when will it
be fixed?
I have the latest code 2.78.

On the air I get no print from other hams. As a test I use my K2 with
another pc to check and ASFK is fine by garbage with FSK.

Jerry, N2UZ

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wayne burdick

Re: FSK problem with my K3

Administrator

Hi Jerry,

If your program doesn't provide any way to invert the polarity, I'll
try to get FSK POL working for you. It had fallen off the radar because
all the applications in use had a way to do this.

tnx
Wayne
N6KR

On Jan 28, 2009, at 1:47 PM, n2uz wrote:

> Hi all,
>
> First of all, I prefer to use FSK instead of AFSK. ASFK works fine.
>
> My problem is that I have the wrong polarity coming out of my rtty
> program (fldigi under linux). It is hooked up to pin 1 of the ACC 15
> pin
> connector. It is changing polarity fine (looking at it with my oscope.
> How can I invert it in the K3? I tried the CONFIG param FSK POL and
> that does not do it. I read an email on the archives saying that the
> config item FSK POL does not work. If that is the case, when will it
> be fixed?
> I have the latest code 2.78.
>
> On the air I get no print from other hams. As a test I use my K2 with
> another pc to check and ASFK is fine by garbage with FSK.
>
>
> Jerry, N2UZ
>
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
> http://mailman.qth.net/mailman/listinfo/elecraft
>
> Help: http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com
>
>

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Don Wilhelm-4

Re: FSK problem with my K3

In reply to this post by n2uz

Jerry,

I just looked at the fldigi files on the web, and it appears that fldigi
does not do FSK, but all its RTTY operation is in AFSK. If that is the
case, you will need to connect the soundcard to the line in and line out
connectors on the K3 rather than connecting to the ACC connector pin 1.
See http://www.w1hkj.com/FldigiHelp/RTTYFSK.html for the source of my
information it states that "All of the modem signals that fldigi
produces are audio signals."

If you have implemented the circuit shown in
http://www.w1hkj.com/FldigiHelp/PseudoFSK.html to produce Pseudo FSK, it
does state that you may have to invert the sense of the keying signal.
A second 2N2222 stage like the one shown should accomplish the inversion.

73,
Don W3FPR

n2uz wrote:

> Hi all,
>
> First of all, I prefer to use FSK instead of AFSK. ASFK works fine.
>
> My problem is that I have the wrong polarity coming out of my rtty
> program (fldigi under linux). It is hooked up to pin 1 of the ACC 15 pin
> connector. It is changing polarity fine (looking at it with my oscope.
> How can I invert it in the K3? I tried the CONFIG param FSK POL and
> that does not do it. I read an email on the archives saying that the
> config item FSK POL does not work. If that is the case, when will it
> be fixed?
> I have the latest code 2.78.
>
> On the air I get no print from other hams. As a test I use my K2 with
> another pc to check and ASFK is fine by garbage with FSK.
>
>
> Jerry, N2UZ
>
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
> http://mailman.qth.net/mailman/listinfo/elecraft
>
> Help: http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com
> ------------------------------------------------------------------------
>
>
> No virus found in this incoming message.
> Checked by AVG - http://www.avg.com
> Version: 8.0.176 / Virus Database: 270.10.15/1921 - Release Date: 1/28/2009 6:37 AM
>
>

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wayne burdick

Re: FSK problem with my K3

Administrator

I've already completed the FSK POL menu entry, too, in case that is
needed. I've sent it to a few testers.

73,
Wayne
N6KR

On Jan 28, 2009, at 7:01 PM, Don Wilhelm wrote:

> Jerry,
>
> I just looked at the fldigi files on the web, and it appears that
> fldigi
> does not do FSK, but all its RTTY operation is in AFSK. If that is the
> case, you will need to connect the soundcard to the line in and line
> out
> connectors on the K3 rather than connecting to the ACC connector pin 1.
> See http://www.w1hkj.com/FldigiHelp/RTTYFSK.html for the source of my
> information it states that "All of the modem signals that fldigi
> produces are audio signals."
>
> If you have implemented the circuit shown in
> http://www.w1hkj.com/FldigiHelp/PseudoFSK.html to produce Pseudo FSK,
> it
> does state that you may have to invert the sense of the keying signal.
> A second 2N2222 stage like the one shown should accomplish the
> inversion.
>
> 73,
> Don W3FPR
>
> n2uz wrote:
>> Hi all,
>>
>> First of all, I prefer to use FSK instead of AFSK. ASFK works fine.
>>
>> My problem is that I have the wrong polarity coming out of my rtty
>> program (fldigi under linux). It is hooked up to pin 1 of the ACC 15
>> pin
>> connector. It is changing polarity fine (looking at it with my oscope.
>> How can I invert it in the K3? I tried the CONFIG param FSK POL and
>> that does not do it. I read an email on the archives saying that the
>> config item FSK POL does not work. If that is the case, when will it
>> be fixed?
>> I have the latest code 2.78.
>>
>> On the air I get no print from other hams. As a test I use my K2 with
>> another pc to check and ASFK is fine by garbage with FSK.
>>
>>
>> Jerry, N2UZ
>>
>> _______________________________________________
>> Elecraft mailing list
>> Post to: [hidden email]
>> You must be a subscriber to post to the list.
>> Subscriber Info (Addr. Change, sub, unsub etc.):
>> http://mailman.qth.net/mailman/listinfo/elecraft
>>
>> Help: http://mailman.qth.net/subscribers.htm
>> Elecraft web page: http://www.elecraft.com
>> ----------------------------------------------------------------------
>> --
>>
>>
>> No virus found in this incoming message.
>> Checked by AVG - http://www.avg.com
>> Version: 8.0.176 / Virus Database: 270.10.15/1921 - Release Date:
>> 1/28/2009 6:37 AM
>>
>>
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
> http://mailman.qth.net/mailman/listinfo/elecraft
>
> Help: http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com
>
>

n2uz

Re: FSK problem with my K3

In reply to this post by n2uz

Wayne,

Thanks for the 2.81 revision, I will load it tonight.

I loaded up windows xp and ran ran mmtty using fsk to the K3 and
receiving good print on my K2.

The problem is the pseudofsk output in fldigi!!!!!!!!!Has to be bad data
being generated within the program. The diddle does not sound right.
Don, I had a good 4 volts out of the doubler circuit more than adequate
for the 'keying' transistor.

Thanks to both you and Don for your help.
I will use ASFK until Dave provides a fix for fldigi.

Jerry, N2UZ

snip...........
My problem is that I have the wrong polarity coming out of my rtty
>>>>>> program (fldigi under linux). It is hooked up to pin 1 of the ACC
15
>>>>>> pin
>>>>>> connector. It is changing polarity fine (looking at it with my
>>>>>> oscope.
>>>>>> How can I invert it in the K3? I tried the CONFIG param FSK
POL
>>>>>> and
>>>>>> that does not do it. I read an email on the archives saying
that
>>>>>> the
>>>>>> config item FSK POL does not work. If that is the case, when
will
>>>>>> it
>>>>>> be fixed?
>>>>>> I have the latest code 2.78.
>>>>>>
>>>>>> On the air I get no print from other hams. As a test I use my K2
>>>>>> with
>>>>>> another pc to check and ASFK is fine by garbage with FSK.
>>>>>>

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