Shared feedline for OCF antennas...

[K1ZJH]

I know you can easily employ multiple dipoles on a single feedline, and the lowest impedance dipole will be the one that does the work.

Does the same hold true for paralleling two OCF antennas, on a common feedpoint?  Case in point would be two MFJ OCFs (freebies, don't go there  ) one is the 80/40 meter model, the other covers 40 through 6 meters.

Pete

[K1ZJH]

So far 58 readers got a good chuckle out of this question 

[WD5JKO]

So far 58 readers got a good chuckle out of this question 

I take it this is an April fools question? 

I use my OCF Windom (single wire 35' feed) 160-10m where the inv V top is a half wave on 80m. I get a < 2:1 swr feedpoint on 160 (1960), 80 (3.88), 40 (~ 7100) without a tuner. I do use an 'L' network however to make the feedline to the shack flat. Considering it is up in a large Oak tree, I think it does a pretty fair job...for what it is.

Isn't the point of OCF such that you can operate on all harmonically related frequencies above the fundamental whereas with a 1/2 wave dipole you only get odd harmonic frequencies (coax feed)? You can also run it as I do at 1/2 the fundamental as it acts like a top loaded vertical.

Jim
WD5JKO

[Steve - WB3HUZ]

Get some modeling software and try it. I would think there would be much more interaction with the OCFs than dipoles.

[K1ZJH]

So far 58 readers got a good chuckle out of this question 

I take it this is an April fools question? 
 

Isn't the point of OCF such that you can operate on all harmonically related frequencies above the fundamental whereas with a 1/2 wave dipole you only get odd harmonic frequencies (coax feed)? You can also run it as I do at 1/2 the fundamental as it acts like a top loaded vertical.

Jim
WD5JKO

Hi Jim

Long story. One OCF is "optimized" for only 80 and 40 meters, the second
OCF is "optimized" for 40, 20, 10 and 6 meters. A friend designed them
and had offered to give me a pair to try out; all assembled, ready to put
up, feedline and baluns included.  His contention is that many
designs give up optimum performance when trying for as many bands as
possible coverage.  I was just musing if I could get away with one feedline
and balun; I guess modeling would be the way to go.

My "real"  antenna will be a 100 foot dipole fed with homemade 6" open
wire line. Problem is I am running out trees and pulleys on the tower

Pete