[Amps] Clipperton L
Mon, 20 Jan 2003 18:20:50 -0800
>I added a tuned input to an old CL. On 160 I see no "dip" in the input SWR.
>The slug is all the way in. Do I try to add more C or more L ??
More C. A pi-network input needs a Q of c. 2.In other words, the
reactance of C-in needs to be 20 - 25 -ohms.
>On 40 the
>slug is all the way out, but I do have a "dip".
Pi-networks do not dip because they are two L-networks in series -- i.e.,
they are a Z transformer.
>In my mind I don't have
>enough L on 160 and too much on 40. This sound reasonable ?? Also ran out of
>tune and load, but I can fix that. Also is 1000pf enough bypass
>on the Plate choke for 160. ?
>and blocking Cap
blocking, Yes. 500pF is plenty.
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- R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K,