Nice work!
Looks Like 12 turns of #14AWG correct?
What was the SIZE of the dowel or drill bit to make the coil form?
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Is resonance really where you get best antenna performance?
- Thread starter The DB
- Start date
Nice work!
Looks Like 12 turns of #14AWG correct?
What was the SIZE of the dowel or drill bit to make the coil form?
Now my big question and one of the most important ones, does this make a difference? Did it change my take off angle? Did it change my radiation lobes? Did it cancel unwanted currents? Did it increase the value of my s10?
Hell I dunno but it did make that s10 sexier
Hell I dunno but it did make that s10 sexier
It is #12 thhn. I used a piece of 500 mcm to wrap it. So a piece of 3/4 pvc would be about right. Started with 14 wraps and started clipping off a coil at a time till I went too far. Then wrapped another like it.
Yes. I needed to ground the tool box. Ran it back to the battery. Everything to the battery. Why? Oh sometimes it chops out some noise. That's all.
Tune for resonance, match feedpoint resistance with inductance or capacitance as needed. = efficient radiator. Way it is
in a 50 ohm system maximum radiation efficiency occurs when antenna (load) radiation resistance = 50 ohms and total loss resistance in the load = 0 ohms.
antenna radiation efficiency % = radiation resistance divided by radiation resistance + total loss resistance.
in a 50 ohm system resonance occurs when there is no inductive or capacitive reactance present at the antenna (load) feedpoint @ a given frequency
for frequency @ resonance, (X) reactance = 0..
antenna radiation efficiency % = radiation resistance divided by radiation resistance + total loss resistance.
in a 50 ohm system resonance occurs when there is no inductive or capacitive reactance present at the antenna (load) feedpoint @ a given frequency
for frequency @ resonance, (X) reactance = 0..
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if you're asking about determining the radiation resistance and loss resistance in the antenna system, those parameters are beyond the capabilities of your nanovna.
the energy phenomenon known as resonance:
electrical, mechanical, TransverseElectroMagnetic and acoustical.
https://duckduckgo.com/?q=tesla+uses+the+principle+of+resonance+to+shake+a+building&t=h_&ia=web
electrical, mechanical, TransverseElectroMagnetic and acoustical.
https://duckduckgo.com/?q=tesla+uses+the+principle+of+resonance+to+shake+a+building&t=h_&ia=web
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No matter what anyone else would say...that is a NICE JOB.
Thank you for that pic and the basics of the construction - speaks volumes and hopefully will help many many more in the future.
You took your nice 1/4 wave and matched it to your 50 ohm coax and gave the radio the 50 ohm load it was looking for.
Good job.
Every time someone asks a question about installing a SS whip on a mobile , that picture should be part of the answer.
73
Jeff
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So the threads popped on that antenna. Ice put another one up and didnt tighten it so much. Anyway today I'll start fresh. I'll record the antenna as I make changes.
First I'll go for x=0
Second I'll match 50ohm
Third I'll see what swr is at.
According to what I've read here, if I get 1 and 2 right that should be all you need. I'll try it and see.
First I'll go for x=0
Second I'll match 50ohm
Third I'll see what swr is at.
According to what I've read here, if I get 1 and 2 right that should be all you need. I'll try it and see.
