[RTTY] What is this auto mode that QRM's me?

[Ron Kolarik]

Here's some audio clips of the various modes to help identify what just ate your QSO
http://www.nonstopsystems.com/radio/radio-sounds.html
This is the P4 Dragon, listen at 1:37 into it per the description
https://www.youtube.com/watch?v=zzrjQsq4FpE
Straight from SCS
http://www.scs-ptc.com/pactor/sounds
Winmor, audio starts about :30 in
https://www.youtube.com/watch?v=sg5lG-x8wbw

There most likely was a human on one end of junk you saw Tim, they tend to run with
rx audio turned down so they don't have to listen to the noise.....check any of the cruising
forums for proof of that, easy to find.

73,
Ron
K0IDT

----- Original Message ----- 
From: "Shoppa, Tim" <tshoppa at wmata.com>
To: <rtty at contesting.com>
Sent: Sunday, March 30, 2014 11:20 AM
Subject: [RTTY] What is this auto mode that QRM's me?


> With all the Winlink and RM-11708 talk going around, I have a question.
>
> When I contest especially on 80M RTTY band (also occurs other bands, but most frequently on 80M RTTY band, may be weighted by the 
> fact that I like 80M the most!) I am often QRM'ed by some sort of automatic digital mode.
>
> This auto mode is characterized by two sides chirping at each other, one side typically is "longer" than the other. The short 
> chirps are just a second or so, the longer chirps are several seconds.
>
> Bandwidth is similar or broader than RTTY but it is not RTTY.
>
> I think this is some sort of ALE mode or HF packet, but don't know if it's Winlink.
>
> It most frequently comes up on me after I've been running on a freq for 10 or 20 minutes or even more.
>
> I know that this auto mode "sees me" because if I pause, it switches from "short chirps", to the long chirps. So clearly this auto 
> mode sees me on the frequency and knows the frequency isn't clear, but is trying to carry on nevertheless.
>
> Does this sound familiar? I am on east coast US and I'm pretty sure this is some sort of ALE mode (unsure which one) and I'm 100% 
> sure there's no human at either end.
>
> Tim N3QE