You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.
The Feb 2025 Radioddity Giveaway Results are In! Click Here to see who won!

Reply to thread

Message

Toll_Free posted:

"The "sigma" design found a novel approach of getting rid of the BIGGEST problem in the antenna industry: Matching a low impedance to a high impedance. The half wave has > 1K ohm of input resistance, coupled with reactance."

the most effective and efficient method for feeding the base (high impedance) of an end fed half wave vertical is from the opposite end (high impedance) of an end fed quarter wave vertical.

[QUOTE="freecell, post: 758740, member: 30"] Toll_Free posted: "The "sigma" design found a novel approach of getting rid of the BIGGEST problem in the antenna industry: Matching a low impedance to a high impedance. The half wave has > 1K ohm of input resistance, coupled with reactance." the most effective and efficient method for feeding the base (high impedance) of an end fed half wave vertical is from the opposite end (high impedance) of an end fed quarter wave vertical. [/QUOTE]

Top Bottom