> From: email@example.com [mailto:firstname.lastname@example.org]On
> Behalf Of measures
> Because I know that bandswitching a 9-bander does not represent good
> engineering practice. Furthermore, 28 - 29.7 MHz and 3.5 - 4.0 MHz need
> two additional tuned circuits per band. How practical is an
> 11-position bandswitch?.
It may not be good engineering practice in your book. However, it may
be good commercial practice and that has to be a major concern when
designing a product for a target audience.
Input bandwidth can be fixed by using a double pi, l-pi-l or other
more advanced network.
> So is an 11-position bandswitch.
It may be costly but certainly not as costly as a vacuum variable
and wide range rotary inductor. In any case, one might possibly
resort to a 9 position (designer's specification) bandswitch to
select fixed "tune" capacitors to go with a rotary inductor.
> $4500 is no big deal, Joe. I know guys who have over $200k in their ham
Sure there are individuals with $200K plus in their stations. However
there are far more who will (or cannot) pay $20K for an amplifier. Why
do you think the 811 and sweep tube amplifiers are/were so popular?
Why do you think the venerable SB-220, etc have held or even increased
their value? I'd snap up an L-7 today if I could find one for a reasonable
price (and, yes, fix some of its weak spots).
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