[Milsurplus] Connecting ART-13 to 50 Ohm Feedline

[W7QHO@aol.com]

In a message dated 11/20/02 5:52:21 PM, kbkaplan@mchsi.com writes:


> Any advice, comments, suggestions, on the best way to match an ART-13 to=20
> a 50 ohm coax feedline and antenna?=A0 I assume it will drive 400 ohm=20
> ladderline directly
>=20

Ken,

You have to add shunt capacity between the antenna terminal and ground.   A=20
wide range of values will work.   I use 100 pf for 20M, 200 pf for 40 & 75=20
and 800 pf for 160M.   (Additional mods in the osc. and buffer stages are=20
required for operation across the 160M band.)

Don't know about 400 ohms.

Dennis D.   W7QHO
Glendale, CA



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