I don't know if the FAA still has a problem with FM Radios on planes, but I just discovered that the Eton Elite Mini uses Oscillator frequencies that are 10.7 MHz BELOW, instead of ABOVE, the received frequency. So the OSC goes from 77.0 to 97.2 MHz. And the 2nd Harmonic would go from 154 to 194.4 MHz.
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Aeronautical/Avionic Friendly FM Portable??
- Thread starter Schroedingers Cat
- Start date
I'm not sure how that's possible. In a superhet receiver, BOTH the upper and lower sideband is present.
Looking at the advertising material for that radio, nothing is said about this feature. I was hoping they'd have an explanation of their tech... even if it was a the "popular science" level.
Looking at the advertising material for that radio, nothing is said about this feature. I was hoping they'd have an explanation of their tech... even if it was a the "popular science" level.
That's a strange design.
I was trying to see how selective another radio was, so it was handy. I was trying a "local oscillator" next to the other radio. I put it on 97.0 to see if I detected 107.7. I couldn't, but the other Eton tuned to 107.7 oscillated at 97.0. I think to would take an image or RITOIE between the strong OSC and received signal to end up on the other side. If the radio has decent RITOIE and image rejection, it should be greatly attenuated. I'll try again with a radio that picks up potential images.
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