Nagoya NMO-200A 38.5" Antenna NMO Mount Dual Band VHF, UHF (145/440Mhz), Amateur Band Tuned Antenna (Requires NMO Mount)

Nagoya NMO-200A 38.5" Antenna NMO Mount Dual Band VHF, UHF (145/440Mhz), Amateur Band Tuned Antenna (Requires NMO Mount)

Q: Antenna newbie here. It says "Grounded" metal plane, does that mean metal has to be touching the ground (earth) or is a metal object on roof ok?

"Grounded" metal plane depends on what band antenna you are talking about. For 2 meter and higher frequencies with mobile applications on vehicles, the metallic vehicle body serves as the ground plane. The antenna needs a 1/4 wavelength radius circle of metal at the base of the antenna to serve as a ground plane. This is easily accomplished on most vehicles. HOWEVER, the lower in frequency you go, the more difficult this is to obtain. As a result, antenna tuners may be needed to tune the radio to the antenna. Base station antennas are either of a vertical or horizontal design/polarization. Most HF verticals need a ground plane under them, usually buried under ground. Horizontal HF antennas do not usually use a ground plane if they are mounted at least 40 feet above ground. VHF/UHF antennas, both horizontal and vertical, usually use the metal mast it is mounted to as a ground plane. Horizontal beam antennas also have their own builtin "ground plane" in the antenna design.. Height above ground for these antennas is not important, EXCEPT if you are trying for more coverage area.

Q: The title says "144/430" but the description says it will go up to 520mhz?

It will work there, but not at top efficiency.. Most likely the antenna is tuned for the middle of the 440 band (430), and the middle of the 2 meter band (144)..

Q: Will this work as a base station antenna?

I don't see why it would not work. It's better than the small 'rubber duck'. However you may wish to consider a physically longer unit 1-2 meters (3-6ft) antenna that can be permanently secured.

Q: Is this antenna waterproof and can it take the hot sun during the summer time?

I live in extreme Northern Maine on the Canadian border on the US side. We get temperature extremes -50 in the winter and we can certainly get up to 95 in the summer. Mine has served me well in all weather extremes, and I am about to purchase another one, not that mine is broken, but to add a second radio for APRS use.

3.7/5

Produkt-ID: 161522923

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Details

Antenna
Radio
Brand
BTECH
Color
Gold
Number of Channels
2
Impedance
50 Ohm
Maximum Range
2 Meters

Häufig zusammen gekauft

Nagoya NMO-200A 38.5" Antenna NMO Mount Dual Band VHF, UHF (145/440Mhz), Amateur Band Tuned Antenna (Requires NMO Mount)

Nagoya RB-100N Professional Drill & Bracket NMO Mount Kit - Heavy Duty with 20' RG-58A/U Cable & PL-259 Connector - Weatherproof, High-Frequency Performance with Versatile Installation Options

BTECH UV-50X2 (Second Gen.) Mobile 50 Watt Dual Band Base, Mobile Radio: VHF, UHF Amateur (Ham)

Beschreibung

Easy To Install, Omni-Directional, Measures ~38.5 inches, Stainless Steel Antenna
No tuning needed, Solid Brass NMO Mount with Satin finish, Gold plunger-type contact pin
Antenna Mobile or Base Mounts that use NMO connectors (Such as Nagoya RB-50 NMO Magnetic Mobile Mount or GPK-01 NMO Base / Field Mount)
Pairs Great with the BTECH UV-25X2 or BTECH UV-50X2 with compatible mount
Fold over design allows the Antenna to Fold-Over which allows you to easily put the antenna down in parking garages or in other places where height matters.

Nagoya NMO-200A 38.5" Antenna NMO Mount Dual Band VHF, UHF (145/440Mhz), Amateur Band Tuned Antenna (Requires NMO Mount)

Spezifikationen

Item Weight	1.41 ounces
Product Dimensions	17 x 0.5 x 0.1 inches
Item model number	Nagoya NMO-200A
Is Discontinued By Manufacturer	No
Warranty	1 Year Warranty Provided only through "BaoFeng Tech"

Haben Sie eine Frage? Sehen Sie, was andere fragten

Antenna newbie here. It says "Grounded" metal plane, does that mean metal has to be touching the ground (earth) or is a metal object on roof ok?

The title says "144/430" but the description says it will go up to 520mhz?

Will this work as a base station antenna?

Is this antenna waterproof and can it take the hot sun during the summer time?

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