Andy, Bonnie's information is out of date.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 ยง97.221 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 -------------------------------------------------------------------------------- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.19.2/1222 - Release Date: 1/13/2008 12:23 PM
