> I remember very well the one made by Barker and Williamson , wound in
> sections, each on of a different number of turns. At some time Collins
> used
> them in military radios that covered 2 to 30 MHz continuously. I don't
> know
> whether someone is making them today. This was on of the main reasons that
> in military equipment (high power!) they dispensed with the choke and
> moved
> over to series feeding of the high voltage supply. The GRC 106 was one
> good
> example. It employed series feed of the 2400 VDC supply and took the power
> out through a link on the coil.
Harris uses ferrite rods in their chokes, ending up with a 1.8-30 mhz unit
in a small package, with no resonances. This method was written up years ago
in one of the ham mags., but I forget which.
(((73)))
Phil, K5PC
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|