[HBR] What would W6TC do?

[Peter Bertini]

Here's my take. TC would probably abandon the dual conversion
design and either go to a color burst, or uP crystal ladder filters
in the 3.5 to 10 MHz range. This could yield good selectivity,
and open up the possibility of multiple filters for both SSB and CW.
Ladder filters are pretty easy to make.  That would eliminate the
second IF, the conversion oscillator, and a mixer stage. Right of
the bat: less spurs, no BCB blowby, and better dynamic range.

I suspect Ted might look at toroids for the coils, if felt it was practical.

Pete


On 2/6/11, Walt Hutchens <waltah at earthlink.net> wrote:
>> I think you guys are stuck in the mid 1900's.
>
> No, really?
>
> Funny you came up with that. One of the few dozen other people who
> would agree (regarding me) is my wife. ;-)
>
>> Today TC would probably be using something like a Software Defined
>> Radio or possibly a even a more modern design such as the Silicon
>> Labs Si4734.
>
> You might very well be right; I didn't know the man and don't know any
> factual reason to disagree. But since this list is centered on his
> 1960+/- designs and at least some of us are interested in vacuum tube
> construction and design I purposely limited my original question to
> vacuum tube answers.
>
> Walt
> KJ4KV
>
>
>
>
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