Base 11m dipole symptoms

[sp5it]

Wrong. Dipole need balun.
5 turns of coax 7" diameter right under antenna feedpoint.
or 16 turns of coax 4.25" diameter right under antenna feedpoint.
Google for "choke balun", will give you an idea what I mean
I suggest to use some ferrite beads at the coax entrance to your house.
Mike

 

[Limeybastard]

Wrong. Dipole need balun.
5 turns of coax 7" diameter right under antenna feedpoint.
or 16 turns of coax 4.25" diameter right under antenna feedpoint.
Google for "choke balun", will give you an idea what I mean
I suggest to use some ferrite beads at the coax entrance to your house.
Mike

I thought I'd be good to go out of the box, it looks like this .

 

[sp5it]

Show us what is in the white box

 

[The DB]

Wrong. Dipole need balun.
5 turns of coax 7" diameter right under antenna feedpoint.
or 16 turns of coax 4.25" diameter right under antenna feedpoint.
Google for "choke balun", will give you an idea what I mean
I suggest to use some ferrite rings at the coax entrance to your house.
Mike

Two things.

What you are talking about isn't actually a balun, it is a choke. To be a balun it has to force both sided into balance. The chokes made by winding coax only resist the flow of RF in a certain direction, they do not force balance. Either may work for your needs, but they meet those needs in very different ways.

And the dimensions given are not good for CB use. Here is a chart made from actual testing.

Five turns on a seven inch form would be great for the region between the 17 and 20 meter ham bands. 16 turns on a 4.25 inch form would be great for the frequencies just below the 20 meter ham band. If you are talking about the 20 meter ham band, either of these options would be acceptable, however, if CB is what you where you want the choke to work, 5 turns on a 4.25 inch form works very well.

I thought I'd be good to go out of the box, it looks like this .
View attachment 21467

That is likely fine. Many of those have a balun inside the PVC covering. Do you happen to have a link to where you got it, or any other such information for verification?


The DB

 

[LeapFrog]

http://www.ebay.com/itm/REDUCED-PRI...620856&hash=item1c8dfe3150:g:seoAAOxyd8NSbs6-

 

[Limeybastard]

http://www.ebay.com/itm/REDUCED-PRI...620856&hash=item1c8dfe3150:g:seoAAOxyd8NSbs6-

I bought the one that was recommended by a forum member.

http://www.ebay.com/itm/11-Meter-CB...e=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2649

 

[LeapFrog]

I bought the one that was recommended by a forum member.

http://www.ebay.com/itm/11-Meter-CB-Base-Station-Dipole-Antenna-Handles-2000-Watts-PEP-Model-CBS/263042970421?ssPageName=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2649

10-4, the one I posted a link to looks red, and uses the same photo you shared earlier so I was reminded of the one I linked to.

 

[sp5it]

The DB
You are right.
Limeybastard
What is inside PVC tube?
Mike

 

[Limeybastard]

The DB
You are right.
Limeybastard
What is inside PVC tube?
Mike

How do I open it Jim ? In a Scottish accent lol

 

[Limeybastard]

I was thinking about doing the below after what bob85 suggested, using 4 or 5 turns of the existing coax and placing it 5 or 7 inches below coax connecter on dipole.

http://www.hamblog.co.uk/constructing-an-ugly-balun/

 

[sp5it]

Do it. Won't hurt, can help.
Mike

 

[bob85]

For 10 bucks on ebay i doubt there will be a balun in the white container & it looks too small to contain an effective coaxial choke,

 

[Limeybastard]

For 10 bucks on ebay i doubt there will be a balun in the white container & it looks too small to contain an effective coaxial choke,

No matey, i have this one.


http://www.ebay.com/itm/11-Meter-CB...760399&hash=item3d4034e7f5:g:cSUAAOSwq7JUCPUq

 

[The DB]

For the price you paid for it, if it doesn't have it you got screwed.


The DB

 

[Limeybastard]

For the price you paid for it, if it doesn't have it you got screwed.


The DB

No doubt.