[Elecraft] K3 FSK RTTY Problems

Gordon LaPoint gordon.lapoint at gmail.com
Mon Nov 9 12:05:50 EST 2015


Rich,
      Sorry, I am going by the monitor tone.  I need to check the actual 
rf on another radio and see if the Mark is really at 200hz offset or at 
2.1Khz like it should be ( I use high tones from mmtty or 2tone)
the AFSK A is working normal.  I did not hear any shift using FSK D.
     I normally use FSK D, and the "pitch" setting was still correct, is 
there another setting that affects the pitch?


    Gordon - N1MGO

On 11/09/2015 11:29 AM, Richard Ferch wrote:
> Gordon,
>
> It's not clear what you mean. The mark output from the radio is at RF, 
> not at either 2 kHz or 200 Hz. Do you mean the audio monitor tone you 
> hear from the K3, or are you monitoring in some other way?
>
> In FSK D (and also in AFSK A), the K3's dial displays the actual Mark 
> frequency as transmitted. If you are monitoring via an external 
> receiver, the two RTTY frequencies should be at the K3's dial 
> frequency (mark) and at a frequency 170 Hz lower (space).
>
> The audio monitor tone from the K3 should be at the K3's Pitch 
> setting. If it isn't, that would seem to point to something odd in the 
> monitor, which does not necessarily mean there is anything wrong with 
> the actual transmitted RF.
>
> 73,
> Rich VE3KI
>
> N1MGO wrote:
>
>>      I normally use MMTTY, with DXLabs. That is not the problem, the
>> Mark output of the radio is at ~200hz, NOT 2Khz as normal, and can not
>> tell if the space is there or not, due to the super low frequency offset
>> from the dial frequency.   I'm setup for SO2V operation with Writelog,
>> that also has the problem.  I did check for port conflicts and did not
>> find any.
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-- 
Gordon - N1MGO



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