Conventional hardware voting comparators could work but require the backhaul, which in most commercial applications is 4 wire e&m voice circuits using either tone signaling or e&m signaling. (This method of voting is done outside of allstar/app_rpt.)If you looking for the alternative IP voting of the varuious app_rpt flavors you can try XIPAR: http://www.xelatec.com/xipar/simplevoterIt wont be as seamless of voting as a RTCM, but its much simpler, doesnt require anything more then PC's, the IP backhaul and usb radio interfaces with radios capable of giving discriminator audio.
On Wed, Mar 30, 2016 at 8:09 AM, Joe Leikhim <rhyolite@leikhim.com> wrote:
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
_______________________________________________
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