[GreenKeys] Questions about some signals on the air.

[Peter Gottlieb]

These have been around for a long time.  Easy to turn the signal into 
binary, but I haven't seen where anyone has done any decoding from 
there.  The tools we have are poor.  I was beginning to write some 
better ones but my new job, and temporary move to a rental condo where 
antennas are prohibited a few years back put that on long hold.  First 
step is symbol rate, then getting a good read on the data, then looking 
for patterns and going from there.


On 5/25/2012 11:30 PM, tony j. podrasky wrote:
> Hello Richard et al;
>
> I haven't listened (right now) but I am assuming it is a signal that:
>
> o runs 850 Hz shift
>
> o sounds like about 35-66 WPM - but has a "stutter" where some pulses
>     are slightly longer once and a while.
>
> o just before it drops carrier it goes into a 50% duty-cycle mark-space tone
>     toggle for about 5 seconds.
>
> o then drops the carrier.
>
> o then comes back on and does it again.
>
> --
>
> I have chased this signal, found the identical transmission (using dual
> receivers) on other frequencies. It is EXTREMELY strong where ever I
> find it. And I've examined the signal with all the tricks I have at
> my disposal and haven't been able to find rhyme nor reason of how
> it works.
>
> I had researched all over GOOGLE and can not find anyone who can
> give me any useful information about it.
>
> I'd pay up to ten kilobucks to be able to decode it - if the data
> was of any interest.
>
> It REALLY, REALLY bugs me that it is so strong and I can't decode it.
>
> UE,
> W6ESE - tony
> NNNN
> ZCZC
>
>
> Richard Knoppow wrote:
>>       I am using MMTTY and receiving on an R-388.  AT about
>> 10.430 I find a very strong RTTY signal which seems to be
>> there most of the time. I can't find any combination of
>> settings that decodes into anything but nonsense.  What is
>> this?  Is it encrypted and if not how do I go about
>> receiving it.  I've run into other non-ham signals that are
>> similar. Please forgive my ignorance.
>>
>>
>> --
>> Richard Knoppow