-=> Jasen Betts said to Roy J. Tellason
 -=> about "BAG OF CHIPS" on 01-11-04  13:54.....

 JB> it'd be real hard to design an RF circuit that'd work from 100Khz all
 JB> the way up to 1Ghz...

Darn right!

Usually one circuit is good from the lowest freq you want to go
to, up to about 30MHz by switching coils and caps, but above that
the lead lengths become critical and you have to design a new
circuit for each band.

 JB> ISTM most devices get at most factor of 3
 JB> betweens ends of each tunable band, that may be a limitation of tuning
 JB> devices or it may also involve limitations in the filters employed in
 JB> the receiver.

Yes, I think a range of about 3:1 for each band is the limit for
all practical purposes.

From Greg Mayman, in beautiful Adelaide, South Australia
   "Queen City of The South"    34:55 S  138:36 E

... Mama, don't let your chips grow up to be chocolate.
___ Blue Wave/386 v2.30

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