[50mhz] Ohmite RF Chokes

[Barry L. Ornitz]

Our esteemed Alan L. Waller, k3tkj@qsl.net, is looking for
some Ohmite Z-50 RF chokes.

I found the following table in one of my Boatanchor-related
files on hard disk.  I am not sure where it came from so I
cannot credit the original author.  You might find the
information useful if you wind your own chokes.  Print in a
fixed width font.

        73,  Barry L. Ornitz     WA4VZQ     ornitz@tricon.net

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Ohmite  Frequency   Inductance   Core Dimensions     Color
Number  Range, MHz  Microhenries    inches

Z-400    320 - 520    0.20       1/8 long, 5/32 dia  Blue
Z-235    160 - 350    0.84       3/4 long, 3/16 dia  Yellow
Z-144     80 - 200    1.8        3/4 long, 5/16 dia  Green
Z-50      35 - 110    7.0         1 long, 9/32 dia   Red
Z-28      20 - 60     21.0      1-3/4 long, 5/16 dia Yellow
Z-14       7 - 35     44.0        2 long, 7/16 dia
Z-7        3 - 20     84.0        6 long, 9/16 dia

All are single layer coils.  The three lowest frequency units are
wound on ceramic tubes, while the others are wound on phenolic rods.
Without a readily available form,
a one half to two watt high value resistor may be used.