[NLRS] digital on 144.250

Mon Apr 11 16:08:28 EDT 2022

I've got a decode of the digital now:

Contestia 2k-32 144.250.35 (according to my FT817) in the twin cities.

The decode is as follows:

Before RSID: <<2022-04-11T20:05Z Cont32-2K @ 24070000+1500>>
X.B;G
$$SP9UOB-P41,21531,220411,200526,44.96580,-90.26800,10800,164,58,-9,122,242,1B,5,N,0*2A11
..R5RAE &UX*^8?53Z/.!(S)5GD%(8*2PH!E
Before RSID: <<2022-04-11T20:06Z Cont32-2K @ 24070000+1500>>

$$SP9UOB-P41,21532,220411,200626,44.97865,-90.23829,10776,164,58,-9,121,242,1B,6,N,0*04D6
..7FBGC_F(;;GVKF:"33:GAG
U=
9TR5$>ILR;G+)4FF^N<^
Before RSID: <<2022-04-11T20:07Z Cont32-2K @ 24070000+1500>>
A.$6J
$$SP9UOB-P41,21533,220411,200731,44.99259,-90.20632,10807,166,57,-12,118,242,1B,6,N,0*1388
.@>B--=,7VX9<Y9^X@"UP!V;N(

On 4/11/22 15:00, Mike Cizek W0VTT wrote:
> At least there's SOMETHING on the band!
>
> ----
> 73,
> Mike Cizek W0VTT
>
> -----Original Message-----
> From: Mary Brown <maryalanab at gmail.com>
> Sent: Monday, 11 April, 2022 14:59
> To: 'Mike Cizek W0VTT' <mgcizek at gmail.com>; 'NLRS Reflector'
> <nlrs at mailman.qth.net>
> Subject: RE: [NLRS] digital on 144.250
>
> That explains my beam heading constantly changing! I have to work on my
> CW...
>
> Mary
> W0AAT
>
> -----Original Message-----
> From: Mike Cizek W0VTT [mailto:mgcizek at gmail.com]
> Sent: Monday, April 11, 2022 2:53 PM
> To: 'Mary Brown'; 'Chris Elmquist'
> Cc: 'NLRS Reflector'
> Subject: RE: [NLRS] digital on 144.250
>
> OK - found it -
> N/SP9UOB/AM  now in EN44ps
>
> High altitude balloon wandering around, but this one doesn't show up on
> APRS.  Yes, starting with N/ is weird, but correct.  One would expect
> W/SP9UOB/AM.
>
> https://www.physicsforums.com/threads/sp9uob-p39-or-ballooning-around-the-wo
> rld.997424/
>
> ----
> 73,
> Mike Cizek W0VTT
>
> -----Original Message-----
> From: nlrs-bounces at mailman.qth.net <nlrs-bounces at mailman.qth.net> On Behalf
> Of Mary Brown
> Sent: Monday, 11 April, 2022 14:39
> To: 'Chris Elmquist' <chrise at pobox.com>
> Cc: 'NLRS Reflector' <nlrs at mailman.qth.net>
> Subject: Re: [NLRS] digital on 144.250
>
> What was throwing me on the ID string is it starts N/ weird... waiting for
> it to repeat
>
> Data modes do not belong in the SSB sub band...
>
>
> -----Original Message-----
> From: Chris Elmquist [mailto:chrise at pobox.com]
> Sent: Monday, April 11, 2022 2:34 PM
> To: Mary Brown
> Cc: 'NLRS Reflector'
> Subject: Re: [NLRS] digital on 144.250
>
> On Monday (04/11/2022 at 02:22PM -0500), Mary Brown wrote:
>> There is a burst of CW in it about every 5-10 minutes, to fast for me
>> to copy... wondering if this is APRS? Winlink? I am not familiar with
>> the modulation either...
> APRS would be AFSK same as packet like you'd hear on 144.390 FM.
>
> I think I copy the ping as "HI"  .... ..
>
> There is a narrow multi-tonal (but fewer tones) burst about 200 Hz wide just
> before the 2 KHz one.
>
> Good chance it's amateur and not commercial though so that's good.
> Probably someone experimenting which I'm all in favor of.
>
> If someone can copy the CW that would cool but that's not me either.
>
> Chris NØJCF
>
>> -----Original Message-----
>> From: Chris Elmquist [mailto:chrise at pobox.com]
>> Sent: Monday, April 11, 2022 2:17 PM
>> To: Mary Brown
>> Cc: 'NLRS Reflector'
>> Subject: Re: [NLRS] digital on 144.250
>>
>> On Monday (04/11/2022 at 01:34PM -0500), Mary Brown wrote:
>>> Someone is running some form of digital on 144.250. suspect winlink
> maybe?
>>> 90 degrees from EN24ho.
>> Copying it here (@ 19:16 UTC) at about S5 on a vertically polarized,
>> unity gain, discone antenna.   I don't recognize the modulation either
>> and don't currently have plumbing from this receiver to anything that
>> could attempt to decode.
>>
>> Seems to be centered at 144.251.750 according to my IC-R8600 which is
>> phase locked to GPSDO reference.
>>
>> There may be two stations, one is weaker at about S3 and issues
>> periodic "pings" and then the louder one responds with a wider
>> bandwidth multi-tonal modulation that's about 2 KHz wide, 1 KHz each
>> side
> of the above center.
>> Chris NØJCF
>> --
>> Chris Elmquist
>>
>>
>> --
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> --
> Chris Elmquist
>
>
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