[R-390] Rockwell-Collins ending production of mechanical filters

[Bob Camp]

Hi

If Collins (or anybody else) was making money in the mechanical filter business over the last 10 years, 
they have hidden that fact mighty well. Even the IF crystal filter business is shrinking mighty fast. You don’t see
any discrete IF filters in cell phones or cell base stations. That’s the main part of the radio business these days, 
dollar wise.

Even if you narrow down to military radio the key idea today is “works with any modulation". That pretty much 
rules out discrete filters right there….. The spec requires DSP right up front.

Bob


> On Aug 17, 2015, at 8:16 PM, Bill Guyger via R-390 <r-390 at mailman.qth.net> wrote:
> 
> Yep one more thing to make you feel old. I think I'll find a rocking chair, and sit there remembering them things that glowed in the dark and radios that took a man to lift them and that didn't have a screen and a mouse attached........................
>  DSP and Software Defined Radios are making Collins feel the pinch and they're one of the leaders in those fields.
> Bill AD5OL
>        From: John Wendler <wendlerjrv at gmail.com>
> To: r-390 at mailman.qth.net 
> Sent: Monday, August 17, 2015 5:29 PM
> Subject: [R-390] Rockwell-Collins ending production of mechanical filters
> 
> http://www.arrl.org/news/rockwell-collins-to-end-mechanical-filter-production
> 
> https://www.rockwellcollins.com/Capabilities_and_Markets/More/Rockwell_Collins_Filters.aspx
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