The only possible problem with TDMA is the timing advance when a user gets far from the repeater. As far as I know, this has been taken into account in the DMR spec and the user will run out of rf range long before encountering this problem.
Beautiful photo. What brand/model camera and what lens did you use to get this shot? Do you shoot professionally?
John - W0PM
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YAESU C4FM has its own direction of development, digital voice service, still image transmission, location and personal information services..
I do not see Yaesu supporting either P25 or DMR with this radio. Full P25 has encryption which can't be used on the ham bands; yeah, I suppose they could omit that and be non-standard. But more importantly, P25 or DMR both would encroach on their professional level $1000 VXD-720. Gresham's Law all over again.
Yes, Yaesu should support D-STAR. If they can't match P25 or DMR for solid marketing reasons, they should admit reality and give their customers what they want, compatibility with an existing workhorse standard. We like to talk to each other. Is C4FM marginally better than GMSK? Yeah it is, but GMSK is infinitely better than nothing.
At $530, I wouldn't buy this radio for C4FM. But I still might buy this radio. The question is whether that 12.5 khz is available available to the soundcard TNC. Then the FT-1DR goes from a clunker to a weirdly inspired SDR. If that were the case, you could support D-STAR or P25 or whatever, albeit with a laptop.
Bluntly, I need a reason to buy this radio and it ain't C4FM.
Yaesu Musen =/= Vertex Standard so that's not it; besides, if you read their white paper it gives the impression that this and the mobile are the first wave of Yaesu's "Digital Revolution" DMR is supposedly in the second wave. Of course, if this radio flops and Icom starts working with other manufacturers on getting them to support D-Star, this may change and they will admit the logic of supporting D-Star.
If the FT-1D is any indication their TDMA radio will be yet another obscure "standard" that nobody makes either subscriber or infrastructure for. I'm not holding my breath for it to come out. But just maybe they have noticed the displeasure at the FT-1D maybe they will FINALLY LISTEN TO THE WISHES OF THEIR CUSTOMERS, before they all jump ship to other manufacturers.
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I spoke to one of their reps at the Dayton 2013 booth... I asked her point blank if the new TDMA radio will be DMR compatible and the answer was "no." Not surprising given Yaesu's complete lack of market research before designing the F-Bomb (FDMA radio incompatible with everything else.)...Why not design a T-Bomb too? That's exactly what they are doing. Very foolish given a 15 year old can figure this out... I know some very genuine and smart people have spoke to people at the highest levels of Yaesu more than 3 years ago about this, but "they know better."
Yeah.. They know how to lose money better. Wires, the F-Bomb, the T-Bomb... Fundamentally foolish ventures.
I spoke to one of their reps at the Dayton 2013 booth. She actually seemed quite knowledgeable unlike many of the sales reps usually there. I asked her point blank if the new TDMA radio will be DMR compatible and the answer was "no." Not surprising given Yaesu's complete lack of market research before designing the F-Bomb (FDMA radio incompatible with everything else.) Why not design a T-Bomb too? That's exactly what they are doing. They understand C4FM is more robust than GMSK, especially in a multipath environment, but they are not looking at existing infrastructure and technologies out there and how to make a cheaper DMR radio. Very foolish given a 15 year old can figure this out.
Instead, we are going to see a bunch of Chinese no-name brands come into play making DMR radios that hams will be buying. It's all lost revenue for Yaesu. I am frankly surprised that they are this blind to reality. I know some very genuine and smart people have spoke to people at the highest levels of Yaesu more than 3 years ago about this, but "they know better."
Yeah.. They know how to lose money better. Wires, the F-Bomb, the T-Bomb... Fundamentally foolish ventures.
Yea, not surprised. One of the big reasons I am moving away from buying Yaesu products... Why support a company so bent on not listening. Hello Kenwood, at least they listen to their customers.
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I do not see Yaesu supporting either P25 or DMR with this radio. Full P25 has encryption which can't be used on the ham bands; yeah, I suppose they could omit that and be non-standard. But more importantly, P25 or DMR both would encroach on their professional level $1000 VXD-720. Gresham's Law all over again.
Wow, you've been seriously misinformed.
Vertex VXD-720 UHF Digital Radios - TwoWayDirect.com
My VXD-720 texts just fine with my XPR7550.