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Picture of Simple CB base station antenna
This is a simple base station CB antenna You can make in 30 minutes out of a bit of PVC pipe and fittings, some wire and a SO239 coax connector and a piece of coax to connect it to your radio. You should have a 1.5 SWR on this. You should be able to build this for about 10 to 15 dollars.
 
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Step 1: Materials

Picture of Materials
MATERIALS
2 PCS 8'6" 12 or 14 gauge electrical wire 
10' 3/4 Schedule 40 PVC pipe
3/4 inch PVC pipe cap
SO239 coax connector (see picture)
4 - screws or bolts to fit the SO239
I solder on eye electrical connector to fit screws on SO239 and wire
20' section of 1.5 inch Schedule 40 PVC pipe.
1 - 1 1/2" PVC "T"
1 - 1 1/2" PVC cap
1 - 1 1/2" x 3/4 PVC reducer

TOOLS
PVC cement
saw
drill
screwdriver
pliers
Soldering gun and electrical (NO acid) solder
electrical tape
sealant

hduperly16 days ago
The electrical wire that is attached to the screw hole of the SO239 then goes down the t connector then what did it attach to? Does it just hang there or is it attached to the ground rod driven into the earth?
codybateman1 month ago
chadccase3 months ago

Thanks

While i didnt have the whole list of materials i pulled out the old box of extra materials from our remodel last summer and away i went . tossed a movie in and sat down and put it together. tested at 1.5 swr. i am going to mount it and ground it out in the morning. I think i am gonna put the 4 horizontal reflectors 8'6" long on next weekend and see how it works.

Great read very helpfull

will post pics of it flying high in the morning

rbodell (author)  chadccase3 months ago
Awesome looking forward to your results.
chadccase made it!3 months ago

thats the top. just got to slide the wire down the antenna pole and seal it up . tested out great.

antenna.jpg
macsac1234 months ago

I made it over the weekend.It is pretty easy to make,follow the steps and be sure solder joints are clean.The swr was below 1.5 even above and below 27mhz.It looks fancy too! and my first contact was in Scotland,...from Boston....not bad for an inexpensive diy antenna

rbodell (author)  macsac1234 months ago

Glad it worked out for you. I assume you are talking about Scottland Mass LOL.

You might notice the addition I made to the NOTES section about grounding the radio. It helps the range..

macsac123 rbodell4 months ago

yes I did ground the radio to the steam radiator and it helps greatly

macsac1234 months ago

so why do you need a 20 ft section of 1.5 pvc if the wire is only 8;6 vertical? is this a half wave antenna? and thanks for the design

rbodell (author)  macsac1234 months ago
The higher the antenna the better the reception is. The 20 foot section is just the mast to get the antenna up in the air.

The antenna starts at the T on top. The ground side of the coax goes to a wire that hangs down inside the mast.
macsac123 rbodell4 months ago

thank you for posting this

jamludi9 months ago

Hi rbodell

Why do you suggest 2-Pieces of 8'6" 12 or 14 gauge electrical wire. Where does the other one go?

rbodell (author)  jamludi4 months ago

CORRECTION:

Sorry about that. One piece is soldered to the center conductor of the coax connector and the other is connected to the inside of one of the bolts that hold the coax connector to the pipe cap. That way it is able to extend down the inside of the mast and not be flogging around in the wind

thndr143 jamludi5 months ago

2 PCS 8'6" 12 or 14 gauge electrical wires

1- Strip back 1/8 inch insulation on wire and solder to center of SO239

2- Solder electrical connector to end of second wire.

---------------------------------------------------

Insert wire that is soldered to SO239 into hole in cap then mount SO239 (radiator)
to cap with screws and a little sealant. SECOND WIRE (ground) ---->Put eye of other wire under one
of the screws. Tighten and put a little sealant over screw with wire
under it.
5- insert wire under screw into hole on bottom of T (see red wire in picture) and out the bottom of the T
6- Insert wire soldered to SO239 in T and out the to 3/4 inch hole in top and glue cap to T.