Official Bulletin, RAC Ontario Section

RAC Ontario Section Bulletin for February 26, 2011


1. Request for Plasma TV Information

RAC is compiling information on possible interference to amateur HF activities from plasma-screen television sets. Members that own a plasma TV are invited to report their experiences.

Reports should name the make and model of TV, and describe the HF station and antenna system and the exact nature of the interference (what bands, what sound etc). Remedies such as ferrite chokes should also be tried and reported. Amateurs with advanced instruments such as spectrum analyzers and calibrated antennas should measure signal intensity levels at given distances; these measurements will add credibility to our investigation. We also want to hear from amateurs whose plasma TVs are NOT interfering with their amateur radio operations. Please mention if a label on the TV or notation in the manual indicates that the TV complies with ICES 003 and/or BETS 7 standards. Send reports to Norm Rashleigh, VE3LC, VP Industrial Liaison, ve3lc (at) rac (dot) ca

— RAC Bulletin Service


2. GLETN Time Change

Effective March 1st, the Great Lakes Emergency and Traffic Net will hold its pre-net at 8:00 pm, and the main net at 8:30 pm, Eastern Time. GLETN meets on 3.932 MHz, 365 nights a year.

— via Shawn, VE3PSV


3. Transatlantic 500 KHz ROS Contact

At 2134GMT on 13 February, Joe, VO1NA managed a full beacon decode from Graham, G0NBD on 502kHz using the new digital mode ROS It is believed this was the first live data mode decoded over the Atlantic on this band. The transmission was sent with an estimated ERP of 1 watt from a 35ft top loaded vertical.

At just over a year old the ROS data mode is relatively new and uses an adaptation of multiple frequency shift keying and forward error correction to help make successful contacts under very difficult band conditions. For more information visit

— Amateur Radio Newsline

4. Transatlantic Ham Radio Balloon

The new LVL1 Makerspace in Louisville, Kentucky is preparing to launch Speedball-1, which may be the first amateur radio balloon to cross the Atlantic. The balloon will transmit RTTY and DominoEX on upper sideband with dial frequency of 7.102 MHz. The actual signal will be on 7.1035 MHz and the transmitter will alternate between 110bps RTTY and the DominoEX digital mode. Free dl-fldigi decoder software to follow the balloon’s progress is at

The launch date has not been announced, but it will be soon, as they are racing against Cornell University’s Project Blue Horizon. For more information visit

— Amateur Radio Newsline

5. Satellite Tracker Web Page

Carl Fretwell’s web page offers satellite tracking – including amateur satellites — and orbital predictions in real-time. Just select a satellite from the drop down list and click the Track button, to track up to 5 satellites. Find it at

— AMSAT News

Bulletin sent from Official Bulletin Manager Brad Rodriguez, VE3RHJ


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