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When I revisit the V4k, it will be a 2m version, and possibly later a 6m.
When the 2m version is made the vertical radiator will be 1/2" copper tube end to end, no taper, and based on the 9212/Mhz formula. The radials and ring will be exact 1/4 wave of center frequency - 146.52 Mhz.
One of the items I need to sort out is the preferred dimensions of the gamma match.

I have not yet settled on the 6m physical materials nor dimensions.

The crude experimental 2m V4k I have up now is not optimum to the frequency I want, but is working quite well, whatever significance that may have ... it is tuned lower than my desired 146.52 Mhz being right at the upper edge of my 2.1:1 VSWR curve.

[QUOTE="HomerBB, post: 710012, member: 8569"] When I revisit the V4k, it will be a 2m version, and possibly later a 6m. When the 2m version is made the vertical radiator will be 1/2" copper tube end to end, no taper, and based on the 9212/Mhz formula. The radials and ring will be exact 1/4 wave of center frequency - 146.52 Mhz. One of the items I need to sort out is the preferred dimensions of the gamma match. I have not yet settled on the 6m physical materials nor dimensions. The crude experimental 2m V4k I have up now is not optimum to the frequency I want, but is working quite well, whatever significance that may have ... it is tuned lower than my desired 146.52 Mhz being right at the upper edge of my 2.1:1 VSWR curve. [/QUOTE]

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