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.

Step 1: 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

PVC cement
Soldering gun and electrical (NO acid) solder
electrical tape

What kind of wattage does this setup support? I have a Connex 4600 Turbo pushing right around 200 watts.
<p>Do you have a wiring diagram or something? I can't quite understand howto wire this up.</p>
is there a limit (by law) for how big to make it?
<p>How exactly does one then mount or get the 20' section of PVC to stand up in the air? At 20' straight up, wouldn't it have a hard time standing up without swaying all over the place?</p>
For mine I drove a piece of pipe into the ground and put the pvc pipe over it and then fastened the upper portion of the pipe to the edge of the roof just like a regular antenna mast. The only difference is that this is pvc instead of steel.<br><br>You could also use guy wires.
Thanks. Can you tell me more about the reflectors you speak of?
<p>If you google images and search for cb base station antenna, you will find antennas similar to this with 4 horizontal reflectors at the bottom of the antenna. This reflects radio waves (that would normally go downward ) out horizontally giving you a bit more range by increasing your signal strength on the station receiving your transmission. It won't make much difference ion what you hear.</p>
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?
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?
<p>Thanks </p><p>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&quot; long on next weekend and see how it works.</p><p>Great read very helpfull</p><p>will post pics of it flying high in the morning</p>
Awesome looking forward to your results.
<p>thats the top. just got to slide the wire down the antenna pole and seal it up . tested out great.</p>
<p>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</p>
<p>Glad it worked out for you. I assume you are talking about Scottland Mass LOL.</p><p>You might notice the addition I made to the NOTES section about grounding the radio. It helps the range.. </p>
<p>yes I did ground the radio to the steam radiator and it helps greatly</p>
<p>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</p>
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. <br><br>The antenna starts at the T on top. The ground side of the coax goes to a wire that hangs down inside the mast.
<p>thank you for posting this</p>
<p>Hi rbodell</p><p>Why do you suggest 2-Pieces of 8'6&quot; 12 or 14 gauge electrical wire. Where does the other one go?</p>
<p>CORRECTION:</p><p>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</p>
<p>2 PCS 8'6&quot; 12 or 14 gauge electrical wires </p><p>1- Strip back 1/8 inch insulation on wire and solder to center of SO239</p><p>2- Solder electrical connector to end of second wire.</p><p>---------------------------------------------------</p><p>Insert wire that is soldered to SO239 into hole in cap then mount SO239 (radiator) <br>to cap with screws and a little sealant. SECOND WIRE (ground) ----&gt;Put eye of other wire under one <br> of the screws. Tighten and put a little sealant over screw with wire <br>under it.<br> 5- insert wire under screw into hole on bottom of T (see red wire in picture) and out the bottom of the T <br> 6- Insert wire soldered to SO239 in T and out the to 3/4 inch hole in top and glue cap to T.</p>

About This Instructable



Bio: I am a retired old geezer with way too much time on my hands for my own good.
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