[OZAPRS] NTAC CHANGES AMATEUR BAND PLANS FOR DIGITAL TECHNOLOGIES(fwd)

[Dave Horsfall]

Seeing as D-Star has been discussed here...

-- Dave

---------- Forwarded message ----------
Subject: [WIA-NEWS] NTAC CHANGES AMATEUR BAND PLANS FOR DIGITAL
TECHNOLOGIES
Date: Wed, 19 Sep 2007 22:07:11 +1000
From: news at lists.wia.org.au
Reply-To: nationaloffice at wia.org.au, news at lists.wia.org.au
To: news at lists.wia.org.au

The WIA?s National Technical Advisory Committee (NTAC) has been asked to
consider how best to accommodate narrow band digital technologies, such
as D-Star, in the band plans.

The NTAC Chairman, John Martin VK3KWA has advised the WIA Board of the
NTAC?s conclusions, and the revised band plans are now on the WIA
website..

In the 2 meter band digital repeaters will be assigned frequencies in
the 146 to 147 MHz segment, using the space between existing FM repeater
channels.

This inter-leaving will increase spectrum efficiency, making up for the
shortage of available channels in some parts of Australia and so
allowing uniform arrangements across the country.

To separate digital and FM emissions, NTAC has recommended the 145 MHz
segment as the best area for simplex digital, with 145.125 MHz as the
national simplex digital channel.

On 70cms, NTAC has recommended that the first fifteen repeater channels,
that is, 438.025 to 438.375 MHz, be used for D-Star type activity.

NTAC has recommended that digital activity on 70cm be centred on a
national channel of 438.900 MHz, with secondary channels 12.5 KHz either
side of the national channel.

For the 23cm band, NTAC has recommend that repeater channels be assigned
in the high end of the 1293 to 1294 MHz repeater segment. On the 23cm
band there is already a digital simplex segment between 1298 and 1300 MHz.

As D-Star on this band uses a 128 KHz emission bandwidth, it is
suggested that channels are spaced at 200 KHz intervals, beginning at
1298.1 MHz.

NTAC will review these arrangements as D-Star and other digital activity
develops.

Visit the WIA website for details.



Wireless Institute of Australia -  http://www.wia.org.au
_______________________________________________
_______________________________________________
Ozaprs mailing list
Ozaprs at aprs.net.au
http://aprs.net.au/mailman/listinfo/ozaprs