Andy,
Bonnie's information is out of date. The IARU Region 2 bandplans, effective
January 1, 2008, recommend additional restricitions on automatic operations
where the bandwidth is under 500 Hz, and no automatic operations on 30m.
ARRL signed onto the IARU bandplans as the Region 2 representative to the
IARU. Under FCC rules, automatic operations with less than 500 Hz bandwidth
may be conducted anywhere the mode is authorized.
http://www.iaru-r2.org/wp-content/uploads/region-2-mf-hf-bandplan-e.pdf
73, Skip KH6TY
- Original Message -
From: expeditionradio [EMAIL PROTECTED]
To: digitalradio@yahoogroups.com
Sent: Sunday, January 13, 2008 4:03 PM
Subject: [digitalradio] HF Automatic Sub Bands
Andy K3UK wrote:
Thanks Bonnie. Can you remind us what what the automatic
sub-bands are, which frequencies ?
Hi Andy,
The automatic sub-bands are slightly different in
various countries and IARU regional bandplans of the world.
A map of worldwide bandplans including automatic sub-bands
is on the web at:
http://hflink.com/bandplans
In USA's FCC rules §97.221 there are segments of the
data sub bands that are commonly known as the
Automatic Sub-Bands, and this chart is on the web at:
http://hflink.com/bandplans/USA_BANDCHART.jpg
USA Auto Sub-Band HF segments for RTTY or DATA
28.120-28.189 MHz
24.925-24.930 MHz
21.090-21.100 MHz
18.105-18.110 MHz
14.0950-14.0995 MHz
14.1005-14.112 MHz
10.140-10.150 MHz
7.100-7.105 MHz
3.585-3.600 MHz
Also, in USA, a station may be automatically controlled
while transmitting a RTTY or data emission on the 6 meters
or shorter wavelength bands.
73 Bonnie KQ6XA
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