Search found 10 matches

by rdunajewski
Tue Nov 18, 2008 11:53 pm
Forum: Astro DStar and other digital voice formats
Topic: NXDN?
Replies: 14
Views: 22450

Re: NXDN?

As probably some you guys are aware, Kenwood and Icom have came out with a new joint standard for digital radio based upon the AMBE-II vocoder from DVSI called NXDN. Now, the question is...has anyone gotten to work on the ham bands yet? :P My group is considering setting up a 440 and 2M NXDN repeat...
by rdunajewski
Fri Jul 04, 2008 3:58 pm
Forum: Astro DStar and other digital voice formats
Topic: P25 repeaters
Replies: 75
Views: 120038

Re: P25 repeaters

But the point of running IMBE on ham should not be to stop other hams from what is being said at all. It should be for the advancement of the hobby, and to get other hams involved in that mode. Que? I agree, encryption has no place on Ham. I enjoy new technology, especially digital voice, so I'm no...
by rdunajewski
Wed Jul 02, 2008 2:07 am
Forum: Astro DStar and other digital voice formats
Topic: Icom/Kenwood NXDN
Replies: 20
Views: 30915

Re: Icom/Kenwood NXDN

NXDN is a nice toy. Too bad the audio sounds like one has a sock in one's mouth. Like all digital modulation schemes. 6.25KHz is a pipe dream. Unless Motorola throws R&D at it I doubt we'll ever see a commercially viable solution. True that is sounds nasally like any digital format, but I will say ...
by rdunajewski
Wed Jul 02, 2008 1:17 am
Forum: Astro DStar and other digital voice formats
Topic: Icom/Kenwood NXDN
Replies: 20
Views: 30915

Re: Icom/Kenwood NXDN

I agree with you on the entire 470-512 VS 700/800 crap, but I'm not sure what they could have done differently in the areas where they are already using the T-band. I admit I do not know just how effectively they actually utilitize that portion of the spectrum where it is used. They'd have the enti...
by rdunajewski
Tue Jul 01, 2008 6:28 pm
Forum: Astro DStar and other digital voice formats
Topic: Icom/Kenwood NXDN
Replies: 20
Views: 30915

Re: Icom/Kenwood NXDN

I agree that analog is not going to disappear tomorrow, but it's on it's way out. Hell, even P25 Phase I (what we're all used to now) isn't 6.25 kHz compatible, that's why Phase II is being hashed out (I believe they settled on a TDMA system like MotoTRBO). So, everyone who spent the cash on P25 sys...
by rdunajewski
Tue Jul 01, 2008 5:22 pm
Forum: Astro DStar and other digital voice formats
Topic: Icom/Kenwood NXDN
Replies: 20
Views: 30915

Re: Icom/Kenwood NXDN

Kenwood's NEXEDGE is NXDN. NXDN is the name of the CAI (Common Air Interface). Kenwood calls the system Nexedge, Icom calls it IDAS. Both use NXDN, and both are interoperable with each other. That's why I commend the move to get two of the major manufacturers together, develop a low-cost digital for...
by rdunajewski
Tue Jul 01, 2008 4:16 pm
Forum: Astro DStar and other digital voice formats
Topic: Icom/Kenwood NXDN
Replies: 20
Views: 30915

Re: Icom/Kenwood NXDN

RayRay wrote:And for those who will ask, the video is here

http://www.arvidnews.com/dv/index.html
I guess it'll cost $22 to find the definitive answer, huh? :baby:
by rdunajewski
Tue Jul 01, 2008 12:57 pm
Forum: Astro DStar and other digital voice formats
Topic: Icom/Kenwood NXDN
Replies: 20
Views: 30915

Re: Icom/Kenwood NXDN

They say D-Star is used in Japan's public safety, but can anyone confirm that? NXDN could be what they're using in Japan as it is.. who knows. The two are said to be similar. D-Star itself was developed by JARL, Japan Amateur Radio League, not a public safety group. So I doubt the D-Star we use here...
by rdunajewski
Tue Jul 01, 2008 12:28 pm
Forum: Astro DStar and other digital voice formats
Topic: Icom/Kenwood NXDN
Replies: 20
Views: 30915

Re: Icom/Kenwood NXDN

Used equipment, but we're talking new here. $1400 for a new analog/digital repeater that will support digital trunking and IP networking in Q4 2008 is a bargain. My mobile only cost $500 with digital, and the portable can be had for $400 with digital (F4061). True, it's not easy to find used Icom st...
by rdunajewski
Tue Jul 01, 2008 6:42 am
Forum: Astro DStar and other digital voice formats
Topic: Icom/Kenwood NXDN
Replies: 20
Views: 30915

Icom/Kenwood NXDN

I'm putting together a site with information about the new NXDN digital voice/data format developed by Icom and Kenwood. While it's designed for business and industrial sectors, it may be of use on the Ham bands for some people or just as general interest. I don't have Kenwood stuff so I can't revie...