Does anyone know what this is?

[Mark Bulla]

All -
I've attached a .wav file of a transmission that I'm picking up at work - I'm receiving it on 162.075 MHz with my HDSDR setup using the FM demod setting.  It sounds digital, and has occasional longer bursts of data.  
It's not bothering me, I'm just curious if anyone knows what it is.  
Mark 		 	   		  
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.amrad.org/pipermail/tacos/attachments/20151027/0416805d/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: HDSDR_20151027_191708Z_162075kHz_AF.wav
Type: audio/wav
Size: 1625304 bytes
Desc: not available
URL: <http://lists.amrad.org/pipermail/tacos/attachments/20151027/0416805d/attachment-0001.bin>