Thank you for your info. If I cannot reach by hand held I will continue with
my Dongle. As long as I am stuck in the room, I may as well used my computer.
Probably if the repeater was in Greenwich or New Canaan, I would have some
luck. Also cannot understand why WECA which is so active has
www.arrl.org/announce/board-0907/
Minutes of the 2009 Second Meeting
ARRL Board of Directors
Teleconference – July 17-18, 2009
29. On motion of Mr. Sarratt, seconded by Mr. Frenaye, the following resolution
was ADOPTED:
WHEREAS, there is current substantial amateur radio movement, activity,
P25 and DSTAR are naturals for cutting bandwidth. DSTAR is -26db @ +/-3 Khz,
there abouts (going from memory) and the mask is similar to P25. Some of the
new commercial designs will be either 6.25 or 2 talk paths in 12.5 (sharing a
system/frequency - isn't that a novel idea?).
--- In
Speaking of Band Plans. It looks like the new IC 9100 will work D Star on 6M
and 10M. Anybody got any thoughts about D Star simplex frequencies for these
bands?
Buddy Morgan WB4OMG
On Oct 2, 2009, at 1:15:40 PM, bosshardss bossh...@gmail.com wrote:
From: bosshardss bossh...@gmail.com
Bosshardss:
And of course many more recent repeaters can be configured for
narrow-band analog service. There's no reason someone couldn't simply
decide to take a repeater narrow and there's plenty of Hams now with
radios that can do this as well.
Chuck - N8DNX
bosshardss wrote:
P25 and
NXDN uses the same codec/modulation as D-STAR, that is why D-STAR DV
is claimed to be 6.25 Khz., the radios may just not be as tight. I
think the Utah VHF Society studies showed that different models of
Icom D-STAR radios exhibited different RF characteristics.
I don't see how the system you linked is more efficient than D-Star, in fact
they use an AMBE vocoder (the heart of DStar digital audio) in their technical
specifications.
It runs at the same effective baud rate, 4800, as current D-Star DV modes. The
only difference I actually see is they were
The Icom and Kenwood commercial systems use a different modulation system hence
the narrower bandwidth.
The current modulation scheme for D-STAR is really designed for 10 kHz channel
spacing, although it can just about be squeezed into 8.33 kHz channels. You
cannot acheive 6.25 kHz channel
Technically we are both right, NXDN uses AMBE over 4FSK and D-STAR uses AMBE
over GMSK (in current radios) but can also be run over 4FSK according to the
specification.
--- In dstar_digital@yahoogroups.com, Trevor . m5...@... wrote:
The Icom and Kenwood commercial systems use a
