Need some antenna help.

RJT

RJT

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I have this radio below and wanting to use the antenna in the second link. Will that combo work? I am not well versed in HAM so not sure. The radio says it is dual band Dual band: 136-174MHz/400-480MHz/245MHz(Receive only). The antenna said it is a 2 meter antenna.

The reason I am wanting to use that antenna is because it is going on my FJ Cruiser Overlanding Rig and need something that will hold up to off-road use with limbs, etc. Mt CB is the same style on a heavy duty spring and works great. I wanted to set this up the same on a heavy duty spring on the back opposite side of my CB antenna. Any help would be greatly appreciated. Thanks, guys!!

https://www.amazon.com/SainSonic-VV-898E-136-174-400-480MHz-Scambler/dp/B0185FN864

https://www.amazon.com/FireStik-2m-4-Black-Fiberglass-Antenna/dp/B000SA4DK0
 
2meters isthe144 to148 mhz. 430 to 440 is the 70cm band. receive would work xmit doubtful high swr. you need a dual band antenna and a license if you transmit
 
dewey said:
2meters isthe144 to148 mhz. 430 to 440 is the 70cm band. receive would work xmit doubtful high swr. you need a dual band antenna and a license if you transmit
Click to expand...

Thanks for the reply. In the radio description, it says Dual band: 136-174MHz/400-480MHz/245MHz(Receive only) what is the "receive only portion?
 
RJT said:
Thanks for the reply. In the radio description, it says Dual band: 136-174MHz/400-480MHz/245MHz(Receive only) what is the "receive only portion?
Click to expand...
Hi,

your radio model has an E suffix, most of the time that means European or not USA bands,
it will receive only on 245Mhz, no transmitting, used outside of the USA, Thailand for example.
You can program it for US frequencies but my have to changes some settings for it to work properly on US frequencies, and some services may require a license.

Who do you plan on communicating with?
 
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I am assuming it’s a CB radio, but I would double check it’s transmit ranges. For transmitting you need an antenna that is tuned to the frequency (range) you’re using and the working span from the center tune is usually pretty small. The reason is that the length of the antenna needs to be a certain fraction of a wavelength in order to emit effectively or the impedance mismatch will cause reflections resulting in a high SWR.

So as @dewey put it, receive ok, transmit questionable.

I would find a radio and antennna pair that you know is a good match and then try to find a beefy mount.
 
What is the purpose for this radio and what freq are planning to transmit on?


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noway2 said:
I am assuming it’s a CB radio, but I would double check it’s transmit ranges. For transmitting you need an antenna that is tuned to the frequency (range) you’re using and the working span from the center tune is usually pretty small. The reason is that the length of the antenna needs to be a certain fraction of a wavelength in order to emit effectively or the impedance mismatch will cause reflections resulting in a high SWR.
So as @dewey put it, receive ok, transmit questionable.
I would find a radio and antennna pair that you know is a good match and then try to find a beefy mount.
Click to expand...

The radio the op wrote about is an FM VHF/UHF radio and will not work on any CB channels.
VHF 25 miles line of sight on flat terrain, farther on a hill and less in a valley.
 
noway2 said:
I am assuming it’s a CB radio, but I would double check it’s transmit ranges. For transmitting you need an antenna that is tuned to the frequency (range) you’re using and the working span from the center tune is usually pretty small. The reason is that the length of the antenna needs to be a certain fraction of a wavelength in order to emit effectively or the impedance mismatch will cause reflections resulting in a high SWR.

So as @dewey put it, receive ok, transmit questionable.

I would find a radio and antennna pair that you know is a good match and then try to find a beefy mount.
Click to expand...

Absolutely NOT a CB rig. Freqs are completely wrong. 245mhz is slightly outside 1.25cm band, not sure who's using that stateside. A good quality dual band 2m/440 should work just fine without major SWR issues.

From the nature of your post, it sounds like you're not a licensed amateur radio operator. I'd suggest you get licensed before transmitting. Bear in mind, 2m/440 is limited in range without using repeaters or internet relay. The only way to boost the range is altitude and antenna design but the antenna in question isn't one of those. For increased range, you'd need a yagi or similar design directional antenna and they aren't often seen in mobile use.
 
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