Can any 2m/70cm antenna be tuned to GMRS 462MHz?

[Lo/Dx Frontier]

It seems to me that tuning an antenna is just a function of cutting it to length to match the frequency desired, and generally the higher the frequency the shorter the antenna is. So based on that, I’d like to ask: can ANY and ALL 2m/70cm band antennas be shortened to perform well with GMRS on 462MHz?

 

[AudioShockwav]

Do you need to retain the 2 meter and 440 coverage?
440 is already a big chunk of coverage and trying to get GMRS would add about 18MHZ more to the spread. Also, if you want to keep 2M in the mix as well it's going to be asking a lot.

73
Jeff

 

[Lo/Dx Frontier]

Do you need to retain the 2 meter and 440 coverage?
440 is already a big chunk of coverage and trying to get GMRS would add about 18MHZ more to the spread. Also, if you want to keep 2M in the mix as well it's going to be asking a lot.

73
Jeff

No, I don’t need to keep it. This question is just for my general knowledge. No current radio project going on. I just wanted to understand how it works.

 

[Rick330man]

The only antenna that I know of which is able to tri-band over the frequencies you want is the Diamond NR-7900.

 

[Blackcat630]

Comet Antennas CA-2X4SRB Broadband VHF/UHF Mobile Antenna

Mobile antenna, 2m/70cm, UHF, 40in

www.gigaparts.com

Not endorsing this unit but I did run across it in a search..

 

[FlatlandBusa]

The comet SRO 2x4 antenna covers the GMRS and MURS bands. I run a couple of them and they perform well.

 

[Captain Kilowatt]

The comet SRO 2x4 antenna covers the GMRS and MURS bands. I run a couple of them and they perform well.

Do you mean the Comet CA-2x4SR? They say the SAR means Search And Rescue, which often uses frequencies just outside the 2m/70cm bands. LOTS of SAR members use them as dual purpose antennas. Mine has served me well over many. MANY years.

 

[W4KVW]

My Diamond V2000a is resonant on GMRS & has far better gain than my GMRS Base antenna. I have not gotten the V2000a back in the air after changing out the coax & repainting the antenna but I have no doubt that it will work far better than the little GMRS Base antenna since it has three times the gain on UHF over that antenna.

 

[FlatlandBusa]

Do you mean the Comet CA-2x4SR? They say the SAR means Search And Rescue, which often uses frequencies just outside the 2m/70cm bands. LOTS of SAR members use them as dual purpose antennas. Mine has served me well over many. MANY years.

That's the one!