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Frequencies Used by Sunset Members as at April 2007 Members and guests who wish to fly at Sunset Soaring Club must place a 50mm (2 inch) "Silvertone" frequency key into the apropriate slot in the club's frequency board - if that slot is free. Only then may they switch on their transmitter. Therefore, current and potential members should try to select one of the less used frequencies shown below to avoid a potentially long wait for a free slot! Currently unused frequencies are shown highlighted in pale yellow. These tables were last updated on 24 April 2007. If you buy a new transmitter or new crystals, please email Robin with your new frequency details. Note: A more detailed (and likely more up to date) list of which members use which frequencies is kept in the visitor's log book at the field on flying days. If you plan to fly with us, be sure to consult these tables before buying a new transmitter or a new set of crystals - and preferably email Robin as well to get the very latest list. Try to find a frequency which is currently unused or only sometimes used. Most new transmitters use the 36MHz band. Please Note: 35MHz (UK) and 72 MHz (USA) frequencies may not be used in Australia. 2.4 GHz transmitters approved by MAAA are allowed, subject to MAAA Manual of Procedures MOP058, and the Club Code of Conduct which specifies a Silvertone key must be used on the special 2.4 GHz board, which limits the number of simultaneous 2.4 GHz users to 10.   A Silvertone frequency key for Channel 651 (36.510 MHz) 29 MHz Band Channel Frequency Total Users Used Often Used Sometimes 10 29.725 1 1 11 29.735 - 12 29.745 1 1 13 29.755 - 14 29.765 1 1 15 29.775 - 16 29.785 1 1 17 29.795 - 18 29.805 - 19 29.815 - 20 29.825 1 1 21 29.835 - 22 29.845 - 23 29.855 - 24 29.865 5 1 4 25 29.875 - 26 29.885 1 1 27 29.895 - 28 29.905 1 1 29 29.915 - 30 29.925 - 31 29.935 - 32 29.945 1 1 33 29.955 - 34 29.965 - 35 29.975 - 36 29.985 1 1 37 29.995 - 40 MHz Band Channel Frequency Total Users Used Often Used Sometimes 50 40.665 3 3 53 40.695 2 1 1 Note: Channels 51 and 52 at 40MHz are not recommended - they may be subject to interference from wireless paging systems. 36 MHz Band Channel Frequency Total Users Used Often Used Sometimes 601 36.010 2 2 603 36.030 - 604 36.040 2 2 605 36.050 2 1 1 607 36.070 3 3 609 36.090 - 611 36.110 1 1 613 36.130 2 2 615 36.150 5 4 1 617 36.170 2 2 619 36.190 1 1 621 36.210 1 1 623 36.230 1 1 625 36.260 4 2 2 626 36.250 1 1 627 36.270 1 1 629 36.290 2 1 1 631 36.310 2 2 633 36.330 2 2 635 36.350 2 2 637 36.370 3 2 1 639 36.390 4 3 1 641 36.410 2 2 643 36.430 3 1 2 645 36.450 4 4 647 36.470 3 3 649 36.490 4 4 651 36.510 2 2 653 36.530 2 2 655 36.550 3 2 1 656 36.560 1 1 657 36.570 - 659 36.590 3 2 1 Note: Like many Australian Radio-Control aircraft clubs, for historical reasons Sunset Soaring Club mainly uses odd-numbered channels in the 36 MHz band for model aircraft and 20 MHz channel spacing (enforced by the 50 mm Silvertone frequency keys on our control board). The Australian Communications Authority (ACA) also allows these odd numbered channels to be used for radio controlled water craft, but not for radio controlled model cars. The ACA mandates that even-numbered channels are for the exclusive use of model aircraft, and we allow this at Sunset, but it does mean that the odd channels either side cannot be used because we still insist on 20 KHz channel separation. If we were to support 10kHz channel spacing, under the MAAA's regulations we would have to require annual transmitter certification to ensure safety. The current 20Hz spacing rule reduces the risk of interference between adjacent channels without requiring transmitter certification. For more information on Australian Radio Control frequencies and channels please click here. For more information on world-wide R/C frequencies check http://www.ukrcc.org/index.htmlhttp://www.ukrcc.org/index.html