Dipole doesn't see ground.

[RatsoW8]

Not to be Captain Obvious but the antenna is located indoors and you have no idea whats in the walls causing problems and that's in addition to what everyone else had to say. Antennas are like horses..they like the outdoors.

 

[Cruiseomatic]

I'm tuning it outdoors. I took the pictures inside because it isn't weather proof yet so its not left outside.

 

[AudioShockwav]

In any event results will likely be better if both sections are the same type and length

I agree that using equal length antennas will provide better results, and are you doing just as pictured, testing with the stand collapsed all the way down?


73
jeff

 

[Cruiseomatic]

No, I just took the picture with it like that so you could see how it is built. If I had it outside fully erected, You wouldn't see it. It stands at full height 13' from the ground. I test and tune outside. And as I said in post #17, Its not weatherproof yet. In this humidity and lately rain, It would be worthless shortly after.

 

[vkrules]

No.
A dipole is balanced and does not require a counterpoise.

As far as your antenna build goes, the mounting pole so close to one end of your 'dipole' is probably far too close to it and capacitively de-tuning it,

Has got nothing to do with needing a counterpoise . . .

I agree to much metal very close to the whip pulling the frequency low.Rethink your mount. How about remove the back plate and replace it with a second L mount then flip the whip mount 180 so that its in the clear and try again. The Coiled coax is a choke not a counterpoise. Dipole doesn't require a counterpoise.And the different length whips wont mater as long as both are resonant.

 

[M0GVZ]

Never work in a month of sundays vertically like that. The coax needs to come away horizontally at 90 degrees for several feet otherwise it becomes part of the antenna through capacitive coupling.

I bet if you were to take it like it is and put the whips horizontal with the coax dangling vertically below it'd tune up fine.

 

[w9cll]

Never work in a month of sundays vertically like that. The coax needs to come away horizontally at 90 degrees for several feet otherwise it becomes part of the antenna through capacitive coupling.

I bet if you were to take it like it is and put the whips horizontal with the coax dangling vertically below it'd tune up fine.

Why not mount it horizontal and see what it does?

 

[AudioShockwav]

""Why not mount it horizontal and see what it does?""
I agree, and run the coax 90 degrees away from the feedpoint.

73
Jeff