KM1H says
>Feed foreward, aka distriputed amps, have been around for many years in
>SS and tube form.
Nope, Carl. Feed forward could be applied to a distributed amplifier, but
they are totally different beasts.
Another approach is either Polar loop or Cartesian loop, both of which are a
lot easier for narrow band signals. Feed forward is more of a wide band
technique.
Dick, where does the FCC regulate intermods in the amateur service? I know
it regulates harmonics. I also know that Part 97.307(d) should be updated if
the FCC regs are to be in line with the ITU Radio Regulations after 2003,
but the FCC are showing no signs of doing this.
73
Peter G3RZP
--
FAQ on WWW: http://www.contesting.com/ampfaq.html
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
Search: http://www.contesting.com/km9p/search.htm
|