Actions

Difference between revisions of "OpenSky"

From The RadioReference Wiki

m (updated categories)
(took out "Pro Voice" as it can now be monitored with a scanner)
 
Line 1: Line 1:
 
OpenSky is M/A-COM's implementation of [[AMBE]] digital [[modulation]] over a [[TDMA]] channel format.<br />  [[AMBE]] is another [[vocoder]] developed by DVSI Inc. Operation is very similar to Nextel [[TDMA]] digital voice systems.<br />  OpenSky systems do not use a [[control channel]].  
 
OpenSky is M/A-COM's implementation of [[AMBE]] digital [[modulation]] over a [[TDMA]] channel format.<br />  [[AMBE]] is another [[vocoder]] developed by DVSI Inc. Operation is very similar to Nextel [[TDMA]] digital voice systems.<br />  OpenSky systems do not use a [[control channel]].  
Like [[ProVoice]] Open Sky '''cannot be monitored''' by any scanner, past or future.<br />
+
Open Sky '''cannot be monitored''' by any scanner, past or future.<br />
 
<br />
 
<br />
 
OpenSky technology is owned by M/A-COM, Inc. a unit of Harris. <br />
 
OpenSky technology is owned by M/A-COM, Inc. a unit of Harris. <br />

Latest revision as of 00:22, 7 October 2017

OpenSky is M/A-COM's implementation of AMBE digital modulation over a TDMA channel format.
AMBE is another vocoder developed by DVSI Inc. Operation is very similar to Nextel TDMA digital voice systems.
OpenSky systems do not use a control channel. Open Sky cannot be monitored by any scanner, past or future.

OpenSky technology is owned by M/A-COM, Inc. a unit of Harris.

Here is the MA Com link for this product. Signal Harbor has a list of pending and implemented OpenSky systems.

Opensky is based on CDPD, the data format used by cellular modems on the now obsolete AMPS network. The signal format has a raw bit rate of 19,200 bps in a 25 kHz wide channel. Channel access is 4 slot TDMA. Slots may carry voice or data.

Harris has since introduced Opensky 2. This version supports 2 slot TDMA at a raw bit rate of 9600 bps in a 12.5 kHz channel. Harris sells Opensky equipment for 770 MHz, 851 MHz and 935 MHz.