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Endfed longwire vs OCF dipole

Dec 23rd 2017, 10:40

KN4CUT

Joined: Apr 25th 2017, 10:31
Total Topics: 0
Total Posts: 0
Envision an endfed longwire antenna fed from a 1:9 UNUN, and with a shorter counterpoise wire attached to the UNUN.

Isn't this configuration really the same as an OCF dipole, if you were to just consider the shorter leg of the OCF as being a substitute for the counterpoise wire?

Is one of these approaches expected to perform any better than the other for multiband operation, and why?





Dec 23rd 2017, 14:56

WA8NVW

Joined: Apr 4th 1998, 00:00
Total Topics: 0
Total Posts: 0
The answer to your first question is YES, these two concepts are similar.
The answer to the second part depends on operating frequencies, lengths of each leg, transmission line type & length, and miounting height above terrain. It also lets us guess at your expectation to "perform any better." Are you judging based on VSWR? Bandwidth? Apparent gain in some direction? They are inter-related, making one parameter best makes the others degrade.

My recommendation: Put it up and work as many stations as you can. Then make a change and work 'em again. You'll see a pattern develop, but more importantly you'll be on the air making contacts and gaining experience.

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