Mike, KC7IT, sent along this interesting article on the use of mechanical resonators in cell phones.
http://spectrum.ieee.org/telecom/wireless/radios-with-micromachined-resonators
Somehow, this made me think of my beloved Drake 2B. The 2B uses an L-C filter at 50 kHz, but -- sure enough -- a quick visit to the e-ham review section showed that Henry Radio had a vailable a mechanical filter kit -- some of the 2Bs out there are apparently fitted with this device.
Check out the e-ham Drake 2B love-fest: http://www.eham.net/reviews/detail/3868 All of it true!
And of course, this all provides an excuse to put up a picture of the Drake 2B.
Re: Another vote for the LP100A
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I'd forgotten about the digital Birds, like the 4391A. Top notch gear,
but pricey. Well, it's a Bird, so you'll pay accordingly. I'd also
forgotten about...
1 hour ago
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