[50mhz] Ohmite RF Chokes
Alan L. Waller
[email protected]
Tue, 27 Aug 2002 19:51:12 -0400
Barry,
I found the chokes and my 6M amp is all better now. I am QRV tonight from
FM28 Delaware if there is any propagation. I will return to Andros Island
FL-14 as C6ALW on 9/14 for 4 weeks. I worked 310 QSO's and 9 countries from
there 8/14 to 8/24.
73 and thanks for the chart I printed it for future reference.
Al
>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.