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Chinese APCO P25 Transceiver

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JASII

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I was reading about the Powerwerx DB-750X Dual Band VHF/UHF commercial mobile radio and it made me wonder if there has been any discussion of am APCO P25 transceiver from one of the Chinese manufactures? With the various digital formats on amateur radio these days, it would seem like a natural next step for them.
 

rapidcharger

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With the various digital formats on amateur radio these days, it would seem like a natural next step for them.
Why?

99.9% of P25 users are government agencies. They don't buy entry level Chinese radios. They buy the most expensive radios money can buy.

There are some entry level Chinese digital radios but they're not p25 and they don't do advanced features like trunking.
 

mmckenna

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It's not just the cost of the radio. DVSI licenses the vocoder, and they don't do that for free. If the $40 low end radios had to have the vocoder and licensing necessary to do P25, they'd cost quite a bit more.

Anyway, as was said, the guys who use P25 in public safety wouldn't appreciate a low end radio. With that, there isn't really a market for it. Also, P25, while popular, isn't really that good a protocol. It's been in the planning stages for 20 years now, and there are much better and cheaper choices, especially for non-public safety and amateur.
 

N0GMP

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I do note that there are more and more p-25 amateur repeaters coming on line as surplus govnm't radios are becoming available. Remember that the government has been requiring P-25 in all of their VHF gear for quite a few years now and they normally change out their gear on a time based -vs- a function based schedule. I anticipate that their might even be as may P-25 'peaters in THIS country as D-Links in a few years.
 

n5ims

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It's not just the cost of the radio. DVSI licenses the vocoder, and they don't do that for free. If the $40 low end radios had to have the vocoder and licensing necessary to do P25, they'd cost quite a bit more.

Anyway, as was said, the guys who use P25 in public safety wouldn't appreciate a low end radio. With that, there isn't really a market for it. Also, P25, while popular, isn't really that good a protocol. It's been in the planning stages for 20 years now, and there are much better and cheaper choices, especially for non-public safety and amateur.
The Chinese paying royalties for licensing? That's a good one! Haven't had a chuckle that good in a while.
 

robertmac

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I'm confused. The link above says it is not compatible with DMR [Motortrbo, Nexus/Nexen, D-star, IDAS]. Can anyone say for sure that they are compatible? And as the tread that posted the link states it does not do any of the formats available in the US. So does anyone know for sure?
 

KD8DVR

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I'm confused. The link above says it is not compatible with DMR [Motortrbo, Nexus/Nexen, D-star, IDAS]. Can anyone say for sure that they are compatible? And as the tread that posted the link states it does not do any of the formats available in the US. So does anyone know for sure?
They do NOT do DMR...

Connect Systems has a DMR compatible radio for about $180

Untitled Document
 

Elfnetdesigns

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Some HYT / Hytera and Kirisun models will do DMR.

Also what do hams need a p25 repeater and radio for? This is the reason we destroy and recycle all traded in digital equipment so it does not return to the field.
 

robertmac

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As stated above, I do not think Kirisun make DMR. If you really have to wonder why hams need P25 read the threads under Amateur Radio, Digital Voice for Amateur use.
 

ecps92

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ahh, longing for the ole Dumpster Diving days at "M"

Because Amateur is about experimenting.
Bet you said the same thing about Hams moving from AM to FM :roll:

Some HYT / Hytera and Kirisun models will do DMR.

Also what do hams need a p25 repeater and radio for? This is the reason we destroy and recycle all traded in digital equipment so it does not return to the field.
 

SCPD

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Some HYT / Hytera and Kirisun models will do DMR.

Also what do hams need a p25 repeater and radio for? This is the reason we destroy and recycle all traded in digital equipment so it does not return to the field.
Because it's part of the hi-tech hobby, to learn about and utilize existing and developing new transmission methods to communicate. Were pretty darn good using recycled "digital equipment" for making reliable communications, especially when the big boys systems go down. Not many of us can afford new P25 equipment and the traded stuff is very affordable. Some of the gear just needs a quick tune up and they work fantastic.
 

TEKurtz

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robertmac; said:
As stated above, I do not think Kirisun make DMR. .
Actually the Kirisun's are DMR. The DP770/780 is Tier II DMR and compatible with MOTOTRBO etc.
The Kirisun S780 is only DMR tier I and not compatible, however it's still digital audio quality, but if you were to get a pair of those they would be the most expensive FRS radios ever.

The DP770's are $350-400 and quite reasonable considering what they offer and what they are comparable to.
Mil-spec water/dust proof, etc.

Kirisun and Motorola on DMR

Also the Puxing PX700/800 series does DMR
 
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robertmac

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Actually the Kirisun's are DMR. The DP770/780 is Tier II DMR and compatible with MOTOTRBO etc.
The Kirisun S780 is only DMR tier I and not compatible, however it's still digital audio quality, but if you were to get a pair of those they would be the most expensive FRS radios ever.

The DP770's are $350-400 and quite reasonable considering what they offer and what they are comparable to.
Mil-spec water/dust proof, etc.

Kirisun and Motorola on DMR

Also the Puxing PX700/800 series does DMR
Couldn't open the links. But I thought the DP770s are not available and not available until 2015?
 

prcguy

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This is probably the most disturbing and misguided statement I've read in a very long time. I want to say more but it would probably get me banned, so I'll just hope the OP is not in a position to send good useable radios off to be destroyed thinking he is doing the world a favor.
prcguy

Some HYT / Hytera and Kirisun models will do DMR.

Also what do hams need a p25 repeater and radio for? This is the reason we destroy and recycle all traded in digital equipment so it does not return to the field.
 
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