I have heard a number of fellow hams indicate that the Fed push for P25 is a mistake and that it does not make sense for hams to move to P25. I would like to...
On Tue, 05 May 2009 03:34:17 -0000, "retiredbynow" ... Public safety is also BANNING digital for certain tasks, like fire scenes... for solid technical...
This is what puzzles me about you anti P25 guys. Everytime someone trys to actually back up a forum conversation "APCO25hamradio" Someone tears it down. Now....
On Tue, 5 May 2009 00:53:38 -0700 (PDT), "Mutual Aid Supplies, Inc." ... Hello, McFly...? I have a P25 radio and do P25 on Amateur. I'm not "anti-P25". I'm ...
Hello group. I don't know how many europeans follow this list, but I thought rising the question here too. I'm on my way to Friedrichshafen Ham Radio fair in...
I have an NXDN radio that cost $400 and can transmit 25 kHz FM, 12.5 kHz FM or 6.25 kHz 4FSk (very similar to P25 phase I) at the rotation of a switch. The...
NXDN, VESELP (outdated now), PROVOICE, OPEN SKY, D-STAR, TDMA stuff like MOTOTURBOÂ all have the same issue though. You HAVE to buy a unit from the maker of...
Greetings, I am new to P25 and admittedly a noobie. But I am interrested in learning more. I'll be at the Dayton Hamvention from Thursday through Sunday and...
This is the Apco25HAM RADIO group? I normally do not post but the vitriolic and possibly self serving comments from "Mutual Aid Supplies, Inc." have forced me...
Inline comments. ... Quickly? Yeah, with a HUGE injection of $$$$. P25 radios are >3x the cost of similar FM only radios. And changing out anything but the...
Respecting that this is a P25 based group, the message regarding NXDN being sole source is not correct. ICOM and Kenwood BOTH offer these radios, and these are...
Jay (and others), Daniels Electronics has produced and widely distributes an excellent manual that details the workings of P-25, both conventional and trunked...
On Tue, 05 May 2009 13:37:28 -0000, "retiredbynow" ... It's a tiny bit off topic for this list, but I'm curious... you say "4X" the amount of channels. Does...
Nate, Off topic here, and hate to ruffle any feathers, but NXDN is FDMA, 2 level shift. So it is a TRUE 6.25KHz occupied bandwidth, simplex or repeated. 73, ...
... I'm definitely NOT trying to turn this into an emotional discussion or attack "Mutual Aid Supplies", I just want to fully understand the plusses and...
... Cool, thanks. I hadn't read up to your post that Icom and Kenwood were the manufacturers... once I read that, I realized which system it is. I thought the...
They implement 'non-standard' features related to un/illdefined op codes. Or, they are doing some audio shaping/noise cancellation. Has nothing to do with the...
'Text tagging'???? You must mean 'unit ID', accomplished in analog by MDC1200, G*Star, DTMF......... It could occur at keyup, unkey, or both. Transmitter ID is...
On Tue, 5 May 2009 14:31:57 -0700, "Walter Howard" ... No... I'm talking about a Motorola-specific feature that allows for short text messages between their...
Nate, The example you gave re: a Quantar P25 in conventional mode relates to use of "ASTRO" (thus the "ASTRO25" label) and yes, it is a completely proprietary...
Regarding NXDN, it is true 6.25KHz all the way. Repeaters and simplex. None of the "2 slots" crap that MotoTRBO is doing with it's systems. I am not familiar...
To clarify, modulation in current (Phase 1) P25 is C4FM. Nate is referring to "ASTRO" functions, features of which motorola types around here can better...
One other item, AMBE vs. IMBE. IMBE came first, then AMBE was offered. Depending upon configuration, the AMBE can interoperate with the IMBE. In fact, one...
They usually have a digital modes seminar, check out the program when you get down to Dayton. Since you are in Ypsi, you should be within mobile coverage of...
Well you parsed the thread email awful tight but if the thread is still about what I think it is, emergency clearing is a good example. In APCO P25 on vendor T...
Variations in the way different manufacturers implement P25 features should become less of an issue now that there is a process for verification. The NIST has...
... I don't have any dog in this fight, but from my experience in the audio/videoconferencing world, there's option 2... they'll just throw an asterisk on the...
The labs were announced today http://urgentcomm.com/test_and_measurement/news/p25-compliance-labs-approved-200\ 90507/ I was amazed that Congress had to pass a...
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