It is an interesting question. Why do some amps have
suppressors and some don't?
--- measures <2@vc.net> wrote:
>
> >
> >> Tom- it does NOT take an EE to detect the bias.
> My professional specialty
> >> was Rocket motors, with only enough electronics
> exposure to 'appliance
> >> operate' good instruments, but my second
> specialty (used professionally,
> >> too) was the detection and analysis of verbal BS.
> You and I both know of
> >> another prime source, but he(they) change their
> tune, and use references
> >> newer than 1935. There is diversity there
> >
> >But then why does nearly every current-day HF
> amplifier manufacturer use
> >"1935 technology" with the inclusion of the classic
> coil turned around a
> >carbon composition resistor for the purpose of
> serving as a parasitic
> >suppressor?
> >
> >If parasitics are of little concern, who on this
> list (manufacturers
> >included) is perfectly comfortable with running (or
> manufacturing) their
> >multi-band HF amplifier without a parasitic
> suppressor? One manufacturer we
> >know of uses an 8877 without the use of any
> suppressor, but other amplifiers
> >in their product line do. Does this infer that
> some of their amp products
> >are prone to potentially damaging parasitics while
> others are not?
> >
> >-Paul, W9AC
> >
> good question, Paul. During the Grate Parasitics
> Debate, six times, the
> designer of the AL-1500 stonewalled my question
> about whether the 1500
> uses a VHF parasitic-suppressor.
>
> cheers
>
> - Rich..., 805.386.3734, www.vcnet.com/measures.
> end
>
>
> --
> FAQ on WWW:
> http://www.contesting.com/FAQ/amps
> Submissions: amps@contesting.com
> Administrative requests:
> amps-REQUEST@contesting.com
> Problems: owner-amps@contesting.com
>
__________________________________________________
Do You Yahoo!?
Yahoo! Mail - Free email you can access from anywhere!
http://mail.yahoo.com/
--
FAQ on WWW: http://www.contesting.com/FAQ/amps
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
|