Difference between revisions of "OpenSky"
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Like [[ProVoice]] Open Sky '''cannot be monitored''' by any scanner, past or future.<br /> | Like [[ProVoice]] Open Sky '''cannot be monitored''' by any scanner, past or future.<br /> | ||
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| − | OpenSky technology is owned by M/A-COM, Inc. a unit of | + | OpenSky technology is owned by M/A-COM, Inc. a unit of Harris. <br /> |
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Here is the [http://www.pspc.harris.com MA Com link] for this product. Signal Harbor has a [http://www.signalharbor.com/opensky.html list] of pending and implemented OpenSky systems. <br /> | Here is the [http://www.pspc.harris.com MA Com link] for this product. Signal Harbor has a [http://www.signalharbor.com/opensky.html list] of pending and implemented OpenSky systems. <br /> | ||
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| + | 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. | ||
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| + | 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. | ||
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[[Category:RR Glossary]] | [[Category:RR Glossary]] | ||
Revision as of 01:06, 1 April 2012
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.
Like ProVoice 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.