Cheap and Dirty CB Base Antenna you can build in an hour

Sounds like it could be hung anyplace and used to beef up the out put on a hand held that has a pigtail.
Great Idea!!

 

A movable fast set up dye pole antenna to increase range ,I like it a lot . Move and scoot after message sent. GREAT IDEA!

 

"Move and scoot" sounds like a pretty good idea for SOP.

One modern DF equipped unit can find you very quickly, 2 will find you instantly. Then ARTY will soon be raining down on that position.

That could make for a very bad day.





---

 

This one is easy to build.

CB is from 26.965 to 27.405; 27.185 is the middle of band. Swap the 28.450 for 27.185.

The .66 is the velocity factor: Coaxial cable velocity factor information The easiest coax cables to buy are RG8, RG56, RG213, RG214 they are all .66. The exceptions are RG59 at .82 and RG8X at .84.

This one and the J pole I posted earlier are both omnidirectional with no lobes; when viewed from the side both have a low angle lobe.
Jpole vs. Coaxial Dipole EZNEC Shootout | Ham Radio Help Desk

Same as all rehabilitated DX'ers I'm still an antenna junkie.

 

Great post!
I know it was six years ago, but I'm hoping you'll answer one question. Or anyone who views this page and knows.
Does this bottom 9' of this have to be above buildings or anything that blocks the signal? Or can the ONLY the top 108" poke above the roof line of a house? I think neighbours will question 20' of PVC sticking up, but hopefully they won't notice 10'.
Thanks for the instruction!

 

Just the top 108 should be clear of obstructions, but higher is better. In fact, you can hang this from a window and it'll still work, just not as well as if higher.

 

quick and dirty antenna...
measure a quarter wavelength of cable (whatever wavelength you want to use) and pull the center conductor out of the side of the braid from that point on the cable.

That's it. You now have a half wave dipole. Center conductor one way, braid the other.

Hang it vertical or horizontal.

Found this and thought it worth a share
Field Expedient Antenna Systems | AMRRON

 

Thanks for the reply!
I have one further question, if you don't mind.
Background: I cut the end off a 50' cable and cut 108" of outer plastic casing off. I folded back inside-out 108" of braiding downward over top of the remaining cable. Now it is double-insulated with shielding. I hope this will work.
My question is, what do I do with the remaining thin shielding and white plastic casing that covers 108" of coax core cable? I have to expose that inner core cable, yes? That would be the last pic here.
I hope I can upload pics here.
Thanks everybody for all this cool help!
Allan

 

The last step - I'm on it. Thanks!!!

 

Yup, the foil must go. The poly will have essentially no effect, and in fact should help with strength in however minor a way. You MUST seal the end against water entry as well as where the braid is folded back. Let us know how well it works.

 

Update: My radio's build-in SWR says "SWR HI", beeps, and stops broadcasting. I trimmed both ends to 102 inches, pulled the center core through a gap in the braiding, moved the antenna around inside & out, used different power supplies, and nothing will get my SWR anything close to what the radio wants. I think I failed somehow. Not sure how. Faulty cable ordered online maybe? Should be OK. It's from MPD Digital, made in the U S of A. So is the radio. Really picky radio? Unsure at this point. Will grounding the radio affect the SWR? Any suggestions?

 

Isn't this a 'bazooka' back in the 70's we did something similar but without the fancy PVC tubing though, rough as a dogs arse, weren't we eh? but it did the job.