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Bill M wrote: Also, if I remember correctly, aircraft use AM in the 108-136 MHz range. So modifying the 88-108 MHz FM portion of the receiver wouldn't work. Doesn't really matter much since you can slope tune it. IIRC, slope tuning can be used to allow an AM receiver to demodulate FM (albeit somewhat crudely). Does it work in reverse? Can you offset-tune an FM receiver, and get its discriminator to demodulate an AM carrier-and-sidebands? Seems to me that this wouldn't necessarily work... the huge-amounts-of-gain-and-then-clip-the-result architecture of an FM's IF strip is going to equalize out the amplitude variations in the AM signal pretty effectively, won't it? -- Dave Platt AE6EO Friends of Jade Warrior home page: http://www.radagast.org/jade-warrior I do _not_ wish to receive unsolicited commercial email, and I will boycott any company which has the gall to send me such ads! |
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