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[TowerTalk] Stubs

Subject: [TowerTalk] Stubs
Reply-to: "Tower and HF antenna construction topics." <>
Date: Tue, 02 Feb 2010 23:35:17 -0500
List-post: <">>
 Interesting comments about a stub at low impedance output of an amp.

Many years ago, I was the Pacific Area MARS Director in Hawaii.? Our
40 meter BC-610 had a strong 2nd harmonic overriding our 20 meter

I put a shorted stub at the output of the 40 meter rig, and monitored
the 2nd harmonic levels while driving pins in the coax.? The 2nd harmonic
levels dropped one heck of a lot, enabling 20 meter operation once again.

The BC-610 output, I believe was a link (Lo-Z).

Warren; W7WY



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