Thanks John, but I can't take credit for this--I got the idea from a
page on W8JI's website and I should have credited him initially but I
was in a hurry and didn't think to do that.
73
Rob
K5UJ
On Thu, Jan 24, 2013 at 6:34 AM, John Lyles <jtml@losalamos.com> wrote:
> K5UJ posted a really great idea to test an RF Choke for resonances, without
> needing even a GDO, (although every ham should still have one of these - in
> addition to an Almost All Digital L/C IIB meter!). Hams come up with the
> greatest ideas for simple methods of doing complex measurements with little
> expense, this forum remains the best!
>
> 73
> John
> K5PRO
>
> ---------
> Message: 6
> Date: Tue, 22 Jan 2013 17:30:04 -0600
> From: Rob Atkinson <ranchorobbo@gmail.com>
> To: Vic K2VCO <k2vco.vic@gmail.com>
> Cc: Amps reflector <amps@contesting.com>
>
> you can test your chokes yourself. Get a modern solid state ham rig
> and fix it so it puts out around 20 watts cw. dump the RF into a 50
> ohm resistor and put a T in the line. Connect the stem of the T to
> the choke; the cold end of the choke connect to a 5 or 10 watt
> incandescent lamp shunted to the feed shield. if you have a scope put
> it in the line with the lamp using a feedline probe. Spin the VFO on
> the rig across all the bands and see if you see the lamp light or any
> RF on the scope trace.
>
> Rob
> K5UJ
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