Re: [op25-dev] Why can't I hear fire tones?

It’s obvious that the software vocoder in OP25 does not decode all/some tones as does the DVSI hardware solution used commercially. For your information, the simulcast question was to query why his scanner was having difficulty with missing transmission as virtually all consumer grade scanner receivers have great difficulty with simulcast systems. If you’ve been following the thread, the users wants/desires the tones that are not being decoded/reproduced by OP25. That is why he needs to seek another solution. Maybe you have the skills to rewrite the vocoder code for o25. That would be nice! Bill From: op25-dev(a)yahoogroups.com [mailto:op25-dev@yahoogroups.com] Sent: Saturday, June 16, 2018 5:20 PM To: op25-dev(a)yahoogroups.com Subject: RE: [op25-dev] Re: Why can't I hear fire tones? I don't see how anything in your replies is helpful. - They are definitely tone frames. Tones run through the vocoder are irrelevant and OP25 would handle them just fine anyway. - Why should the user seek other solutions? The system is sending IMBE tone frames and any decoder thrown at it should handle it. - And how does simulcast have anything to do with this? It doesn't. To the OP: You need to record the raw signal (I/Q data or FM demodulated audio) so someone can analyze it. Then the decoder logic can be updated to accommodate tone frames and you'll get your audible alerts. At 04:19 PM 16-06-2018, 'William Becks' wllmbecks(a)gmail.com [op25-dev] wrote: