> 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
