[App_rpt-users] Non-RTCM voter, where?

Joe Leikhim rhyolite at leikhim.com
Wed Mar 30 11:09:10 EDT 2016


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 at 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
>
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-- 
Joe Leikhim


Leikhim and Associates

Communications Consultants

Oviedo, Florida

JLeikhim at Leikhim.com

407-982-0446

WWW.LEIKHIM.COM




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