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Old July 7th 08, 06:53 PM posted to rec.radio.amateur.homebrew
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Default Wideband receiver architectures

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Guess what you can pick cell phone band on the image
frequency back in the day.


Given how much time was spent discussing the need for image rejection and the
sometimes-elaborate techniques for achieving it, I suspect a lot of my college
professors would be incredulous to learn that many receivers do just fine
without it.

I've noticed that many Yaesu radios lock out the images of the old AMPS band,
which sucks because the image is where there are also 100%-legal-to-receive
paging bands. Yaesu lost a sale to Icom over this.

Hopefully the stupid law will be dropped one of these days -- it's not like
any large percentage of all cell phone conversations are carried out on an
AMPS anymore, and most of the cell phone carriers are quietly shutting down
their old AMPS equipment altogether.

---Joel



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