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Looking for a Dual Band Mobile NMO VHF/UHF Ham&Public Safety Freq.

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MAS063

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I am looking for a Dual Band Mobile NMO mount VHF/UHF with Ham and Public Safety frequencies for both the UHF and VHF. I don't transmit a lot on the Public Safety but once and a while I will need to.

I have an NMO mount: I need 2 antennas. One will be mounted on hood edge with a multi axis mount (so antenna won't have a lot of ground plane.)
2nd will be on roof at first with a Magnet Mount. I have a leased vehicle and don't want to put a hole through so still working on another option for that antenna to mount but will use a magnet mount to start with.

Any help ideas that can be provided would be great!!!!!!

Preferred for UHF: 380 to 490 or so. Acceptable 440 to 490.
VHF 140 - 174+

Thanks,
Nick
 

mmckenna

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1/4 wave antennas are very broad banded and work well in this sort of application. It does require a separate VHF and UHF antenna to do it right.

There are dual band commercial antennas, but not sure they'd have the bandwidth you need. Larsen, Laird, etc. make a few that will work.

Having done things like this before, I can tell you that a good option is to use a diplexer (this is a dual band radio, right?) and use a VHF 1/4 wave whip tuned for center of the band and a separate 1/4 wave UHF whip tuned for the center of that band.

There are some amateur radio grade dual band antennas that will do this, but if you are using this for public safety use, get the right stuff. It'll last longer.
 

mrweather

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Agreed about the commercial/public safety antennas. Will outlast any ham-grade antenna.

But, Comet made a "search and rescue" antenna at one time that covered 2m and 70cm ham as well as traditional public safety bands.
 

sdu219

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Comet Original CA-2X4SR (PL259) CA-2x4SRNMO (NMO) 140-160 / 435-465 MHz Dual Band Amateur Mobile Antenna
For search and rescue. Still available.
 
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I almost bought a CA-2x4SRNMO and someone here on RR contacted me and said they didn't work very well.
prcguy
Ripped mine out of my roof when I hit a tree branch. Now they have a spring but at the time there wasn't one available.

Sent from my SM-T713 using Tapatalk
 

SCPD

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Check out comtelco. They have some 1/4 wave models that cover 20-30Mhz.

Sent from my SM-G930W8 using Tapatalk
 

cmdrwill

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It may be a nice antenna, but not very useful for the OP's purposed VHF/UHF needs... :confused:
May be referring to the bandwidth of one of the VHF or UHF one quarter wave antenna with the large diameter rod. I have one with a 3/16 dia rod.
 

krokus

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Ripped mine out of my roof when I hit a tree branch. Now they have a spring but at the time there wasn't one available.

Sent from my SM-T713 using Tapatalk
I liked the antenna, but damaged the roof of my Jeep. It covered the frequency range well, but get the spring version.

Sent via Tapatalk
 

kb5udf

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Comtelco

I'll second the suggestion for these, great bandwidth on vhf/uhf. I've used them for years. You can purchase these muiltiband mobiles from rfwiz.
 

robertmac

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I almost bought a CA-2x4SRNMO and someone here on RR contacted me and said they didn't work very well.
prcguy
I have 2 of these and find they are one of the best antennas I have used. Cannot comment on transmit outside amateur frequencies but they are certainly excellent at receiving outside and inside amateur bands. In fact, I use them more than a Larsen antenna that lot of people rave about but I find sub par. And unlike rules about transmitting with an amateur radio outside amateur bands, there is no regulation about using antennas. But always check SWR or other antenna characteristics for frequency being used.
 
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