>I would like to make a new RF safety choke. Does abt 3 feet (roughly
>1/4 wave on six meters) wound tightly single layer (solenoid style) over
>abt a pencil thick form using approx. 22 gauge wire sound like it would
>work? Do I check it's resonant freq. with a GDO in free space when it's
>done? Do I want this safety choke to resonate on 50 mhz??? Do I have
>any idea in the world what I am doing?? For the ongoing saga...stay
>tuned. Hi
Ohmite makes a fine line of suitable chokes for this purpose. A Z-50 or a
Z-14 will work very well. They are physically compact and dipped in colored
pint. The Z-50 is red, and the Z-14 is orange!
If you really want to get fancy, cut a piece of RG-8 coax a bit over 40 inches
long; grid dip it and prune it to 50.100 mhz. put a suitable coax fitting on
one end of the stub, and short the braid to the center conductor on the
other. Install the stub with a coax "T" connector at the antenna jack of the
amp. This gives you a "big time" connection to DC ground, and puts your
second harmonic down about 30 db. You can do the same thing on the
inside of the amp if you wish; just use small teflon coax for the stub, solder
it in, and coil it up.
(((73)))
Phil, K5PC
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