[50mhz] [VHF] Name this sound

[doc at kd4e.com]

I had been told that 50.290 was the preferred digital modes frequency,
is 50.260 reserved for weak-signal and 50.290 for PSK31 and the like,
or was I given bad info and 50.260 is where I should anticipate finding
most digital traffic on 6?

> Again, thanks to all for helping, and as I noted (some may have missed the
> message), it was indeed ISCAT. If you've never listened, it does sound very
> different from FSK441 which is actually what I was expecting to hear there.
> In fact, after the signal went away, I did hear some FSK441 (also from a
> relatively local ham, it was MS) and was able to decode that as well.
>
> Thanks for the interesting diversion into the world of weak-signal digital
> modes.
>
> 73,
>       David, K2DBK
>       k2dbk.com
>       k2dbk.blogspot.com
>
>
> On Thu, Jan 27, 2011 at 6:11 AM, Joe<jbarkley at truvista.net>  wrote:
>
>>   Sounds like ISCAT. I have not used it but it is in the mode selection
>> in the WSJT 9.0 version.
>> Joe
>> KI4TZ
>>
>> David Kozinn, K2DBK wrote:
>>
>> This evening, I've heard a sound on 50.260 that I haven't been able to
>> identify. I'm not familiar with all the digital modes so this might be
>> something relatively simple, but I couldn't find a clip online that matched
>> it, nor could I figure out which of the many modes available in DM780 (part
>> of Ham Radio Deluxe) could decode it. The audio lasts for just under 30
>> seconds and seems to repeat after 30 seconds of silence, so I was thinking
>> it might be a weak-signal mode but it's very wide and didn't match anything
>> in WSJT that I could find either.
>>
>> Rather than try to describe it, I've posted a full "cycle" of the sound up
>> on my website (since I didn't know if I could post an attachment here).
>> Here's the link: http://k2dbk.com/50.260.mp3
>>
>> Can someone let me know what this is? Thanks!
>>
>> 73,
>>       David, K2DBK
>>       k2dbk.com
>>       k2dbk.blogspot.com

-- 

Thanks! & 73, KD4E
David Colburn http://kd4e.com
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