[Amps] "10 Meter Ban" to be lifted ...

[Bob Sullivan]

Jim

Exactly right. When I was manufacturing the ARD 230 (microprocessor 
controlled, auto tune) series of amplifiers we did just that - we simply 
"locked out" those 11-meter frequencies in software.

http://www.isquare.com/personal_pages/ard230.htm

73, Bob
WØYVA
Personal site: http://www.isquare.com/personal_pages/ras-hardware.htm


At 11:44 AM 10/12/2006, Jim Brown wrote:
>On Thu, 12 Oct 2006 08:40:34 -0400, Paul Christensen wrote:
>
> >From a manufacturer's perspective, there's still quite a burden as no gain
> >can occur between 26-28 MHz. The new rule sounds great at first, but 
> outside
> >of relatively complex circuitry, how does a manufacturer offer a 
> traditional
> >(no microprocessor or internal freq. counter) legal-limit amp that is
> >capable of 1500W at 28.000 MHz, but is unity gain or inoperable at 27.999
> >MHz?  Simple filters won't work.
>
>If your amplifier has a microprocessor, it shouldn't be too tough to sense
>the input frequency and cause the amp to shut down within the specified
>limits. And since it would be in firmware, it would be tough for a non-techie
>to circumvent. If I'm not mistaken, several of the "big boys" have been using
>microprocessors and/or DSP for a while.
>
>Jim Brown K9YC
>
>
>
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