102 and 107 Inch Cb Radio Homemade Single Beam Antenna UHF Female So239 Mount.
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- Опубликовано: 13 дек 2021
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It's an So-239 with a wire. What am I missing here?
It's 12 gauge copper speaker wire i learn it from another on youtube video here ruclips.net/video/vJpq1RrsqZE/видео.html
@@Foxman362worldradio The gauge of wire only matters when you are going to be running high power. The most common gauges wire used in dipole antenna construction are 18 to 14 gauge depending on the output power with 12 gauge used when running over 1000 watts.
With just 2 wires you have a dipole.
Add 2 more red wires and angle 45 degrees down makes a ground plane antenna.
I did exactly the same thing, as I needed to put an antenna in my attic, as I’m not allowed to put up an outside usable antenna. So I created a GP antenna, so I have all four corners with quarter wave legs and it works, the SWR isn’t all that great due to it being in the attic, but I have had conversations with people in the UK from Germany where I live…only 700+ km so I’m happy with it.
Excellent
Love the connections but, what are the differrent wires ?
Looks like your solder joint is cold
It pours it shud be shine n smooth
Not HATEING just pointing it out
I really like diy antenn it is a lot of fun n you save money n alot work as good or better than store bout one
Just keep make them
I think it is more a groundplane antenna with only one ground radial connection.
How effectient is this?
Ham radio Rick roll lol
What is this?
Both lengths of wire have to be the exact same length!
Not true!
@@hfvhf987 To be a balanced dipole and for the best VSWR, both wires need to be the same length! For the US 11 meter band that would be around 104.25 inches with allowances for installation location and height above ground!
@@hfvhf987 you have a lot to learn
@@clegkleg69 Really? 30 years of building aerials says otherwise but OK...
@@hfvhf987 Yes Really. I've been playing with radios and antennas since the early 1970's, all wire antennas I have built including the current 75 meter doublet I use, the wire lengths are the same length. I'm sure you have read the ARRL's Antenna Handbook, right? It is a wealth of information on wire antennas, but that antenna you built with the so0239 must not work to well, been there done that. good luck
101 inches
Key down with 500w watch it desolder
Ther are so many wrong statements here .... Lol 😂 I build antennas everyday ...lol and about half of this thread is lost!!! Lol geez guys
Speaker wire ?? What SWR are you getting ?? To high SWR will burn up your radio
Your comment makes no sense! Speaker wire can be used for dipole antennas and it is quite effective as an antenna. The type/gauge of wire has no correlation to VSWR at all! The gauge of wire will affect the bandwidth and the power handling capabilities of the finished dipole
The length of the wire will affect the VSWR.
I have made several dipole antennas using 18, 16, 14 and 12 gauge speaker wire, depending on the output power of the radio in use!
18 and 16 gauge wire will handle up to 100 watts, 14 gauge will handle 500+ watts and I have use 12 gauge speaker wire up to 1500 watts with no problems at all!
@@jfrphoto01 you can use speaker wires length of wire will set your SWR YES
The gauge wire will changes power but solid wire or standard wire changes the ohms ( need to be 52 ohms ) with out going into teaching mode. JUST Look at the bought antenna ( solid wires )
@@Curtis-cp2gr A flat top dipole will have a nominal impedance of 72 ohms while an inverted-v will have a nominal impedance of 49 to 52 ohms. Solid or stranded wire makes absolutely no difference in the impedance! Most commercial dipole antennas use 14 or 12 gauge hard drawn stranded copper wire as is is more resistant to breakage due to flexing in wind. Some use hard drawn solid but they tend to be specialty antennas.
Many of of the pre-made antennas also use insulated wires which has the advantage of a slight weather proofing as long as the ends are sufficiently sealed and it also changes the velocity factor enough to allow for a slightly shorter antenna.
Okay, go into teaching mode! LOL!
@@jfrphoto01 OK. Had same decision with other person ( I worked with )
He say he right too ( had 6 years in Amy with Electronics ) after burned up business radios & CB radios
@@Curtis-cp2gr "needs to be 52 ohms" No, actually, modern radios will handle from 49 to 72 ohms (remember, a flattop dipole will have a characteristic impedance of 72 ohms and yet it still matches to the radio) without any problems. The problems come in with major impedance mismatches like 30 ohms or 400+ ohms when using a 52 ohm nominal impedance radio.
52 ohms = 1:1.1
72 ohms = 1:1.5
I have a transceiver (a Kenwood TS-520) that is rated for 50 and 75 ohm coax.
Completely useless
Why does this have 154 thumbs up. Sorry thumbs down.