Here are some products to start with; There is the Raven M4x http://www.ravencomm.com/documents/products_doc3_23.pdf Raytheon JPS SNV-12 (Though the future of this product is up in the air, it was the defacto standard. Uses 600 ohm VF circuits, IP connectivity needs to be overlaid) http://www.simulcastsolutions.com/userfiles/file/appnotes/vSnv12App.pdf Motorola Spectra Tac (Obsolete Now Motorola has pretty much abandoned analog FM technology. Uses 600 ohm VF circuits,) http://www.repeater-builder.com/motorola/spectra-tac/spectratac-index.html The above voters all use some method of signal/noise voting. The JPS SNV-12 and the Raven M4X use DSP to make decision, while the Spectra Tac was pretty much an analog noise measurement vs a status tone/audio AGC level. The SpectraTac does not support non-Motorola receivers unless you know the "secret sauce" which I am privy to. This site has some practical examples of projects that are simulcast, but by design incorporate the SNV-12 voters. www.simulcastsolutions.com Are you looking for some more in depth RF design aspects of receiver voting? I can help perhaps. Joe www.leikhim.com On 3/8/2016 5:20 AM, Steve Wright wrote:
On 05/03/16 06:00, mike@midnighteng.com wrote:
FYI There are RTCM /voter systems for app_rpt if you want to do it right.
Is there an example voting-RX project somewhere I can read about?
Non-RTCM please. I know about the RTCM and I'm looking at alternatives.
Many thanks, Steve
_______________________________________________ App_rpt-users mailing list App_rpt-users@ohnosec.org http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users
To unsubscribe from this list please visit http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users and scroll down to the bottom of the page. Enter your email address and press the "Unsubscribe or edit options button" You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem.
-- Joe Leikhim Leikhim and Associates Communications Consultants Oviedo, Florida JLeikhim@Leikhim.com 407-982-0446 WWW.LEIKHIM.COM