On 9/4/06, Zik Saleeba wrote: > > As a hobbyist I don't think I can claim to be a "true EE engineer". > Still, I'll do whatever it takes to get this thing working so it's a > fascinating learning process all the way. > > I'm definitely going to try Richard's suggestion of using a handheld > receiver to check for interference with the 900MHz telemetry > transceiver's band. The other receiver in the plane is a standard > 36MHz FM R/C receiver and since I don't have an audio receiver for > that band to use for testing I may have to break into the R/C receiver > as you suggest. Although I suspect the unit is so integrated that it > may have no available RF or IF stage outputs. I'll have to dig around > and have a look. Telemetry downlinks shouldn't have any interference, unless it's by conducted noise on the power supply lines. 36 MHz puts you a bit closer to the switcher than you'd be here in the US at 72 MHz, but still plenty of things you can do. You want to avoid the switcher operating around the receiver's IF frequency, and if the IF is 455 kHz, that could be pretty interesting. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist