Pt. 2, How to build a simple dipole antenna for CB / 11 meter band radio in Costa Rica
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- Опубліковано 5 вер 2024
- Cut your wires to the correct length! In most countries CB channels extend between 26.965 MHz and 27.405 MHz, so a half wavelength is about 5.5 m and the two wires composing the dipole should be 2.75 m long.
You can talk to opposing polarization but there is some attenuation
look for tl2t antenna for dx.
but first
Fix the micropfone.
What software program are you using?
SDRplay with an RSPdx :) super good SDR with metal housing.. not too expensive, though
@@FoxyLobo yazılımlar icin bir indirme linki varmi. TA5ME
how far you can reach with that set up?
Well, it depends on the ionosphere but there’s a good chance of getting at least several hundred miles on a good day.. with 40 watts carrier, you can get an AM signal to Europe from east coast of the USA.. the signal will be better with SSB (narrower bandwith = more power concentrated in less khz). of course even with SSB, CB radios have a carrier of at most 12 watts, I believe. Normally on AM it’s 4w carrier power (at least, that is legal limit? Correct me if wrong on this).. anyway, it is possible to go thousands of miles with AM at 4w but it will be a very weak signal, maybe not even usable. More likely is several hundred using skywave. I hear people from California in Costa Rica, but they can’t hear me (maybe in part because my modulation is not working).
Edit: your antenna factors a lot into this, as an example could make a v-beam antenna and achieve a more directional radiation pattern :)
Did you calibrate the NanoVNA?
Yes! Ah I forgot to mention that. I’ve tried to get away without calibrating it but I find it works better calibrated with each use.
😢😢👍
get that antenna higher and your swr will drop
101 inches
Modulation!
Why do you rig it 😂🎉😂😂😂
Some use an RG-59 or RG-6 instead of the 58. By the way, how and what gadget did you use to hook up you rig to have that waterfall and everything to your laptop?
Good to know - this coax is quite old.. I am increasingly becoming a fan of SMA cable for low power projects, but I don't think it's really constructed for the outdoors here.. To receive signals I use a separate dipole hooked up to an SDRplay RSPdx software defined radio, which is hooked up to my laptop running SDRplay software. You can also get a spectrum analyzer plugin and other things for the software. It's really what got me into shortwave DX'ing!
put some shoes on
Could be a bad mic
Stop ✋ rigging everything 😂😂😂😂
Hey Patrick! Do you have an instagram account or any other way to send you a direct message? Love the home made antenna content.
Hi Julian, thanks for your kind message. I have an Instagram, it’s omfoxyom. I’m working on some new projects so I might post those soon.