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Original antennas made in the US, by us, for the greater World

Price: $65.24

Typical leadtime if item is not in stock: approx. 2 weeks (call for stock status)


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    A broadband, rugged, mobile radio antenna featuring a high ESD (ElectroStatic Discharge) isolation. With modest dimensions of 1.5"/4 cm (OD) x 4"/10 cm (height), this antenna radiates with a typical peak omnidirectional gain of +5 dBil, when mounted on a large metal surface of at least 16"/40 cm radius. This antenna will survive a 20 ft drop onto asphalt and continue operating (see Drop Test results)
    • Frequency range: 415-421 MHz
    • Coverage: Omni-directional, low azimuthal ripple (1 dB)
    • Polarization: Linear, Vertical
    • Gain: +3 dBil
    • Nominal Impedance: 50 ohm (RF), Open Circuit (DC) 1 kV isolation, radiating element grounded
    • Input Power: 10 Watts CW
    • VSWR: 2.0 GRAPH (more detail under NOTES)
    • Connector: NMO, Female (see caution under NOTES)
    • Dimensions:
      • Housing 3.8 cm (1.5") OD x 10.3 cm (4.05") h
      • Bottom flange 5 cm (2") OD x 3 mm (0.12") h
    • Mounting: NMO connector (w/AS568B Dash Number 027 O-Ring)
    • Operating Temperatures: -40C to +85C
    • Shock: Operates after drop from 6 m/20 ft onto asphalt
    • Weight: 100 g / 0.25 lbs
    • Shipping Weight: 200 g / 0.45 lbs (shipped individually)

    Internally, the radiating element is DC grounded and the feedpoint is DC isolated beyond 1 kV.

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    • Requires a ground plane (normally mounts on a metal body)
    • Its large bandwidth allows this antenna to be used for the surveillance of signals ranging from 200 MHz to 1 GHz
    • Operating bandwidth of an antenna is often taken to mean its "VSWR Bandwidth". Depending on the transmitter's capability to handle mismatches, the actual bandwidth of this antenna can vary greatly. Below is a table of 4 common VSWR bandwidth figures for this antenna, based on the measurement of a randomly selected sample unit.
      • VSWR of 1.5: 427-415 = 12 MHz
      • VSWR of 2.0: 433-409 = 24 MHz
      • VSWR of 2.5: 438-404 = 34 MHz
      • VSWR of 3.0: 443-401 = 42 MHz
    • CAUTION: In the market, there are many sources of uncontrolled NMO mounts and cable assemblies. Although we have found that most "low cost" NMO connectors available can perform well, their cable assemblies tested poorly, particularly above 700 MHz, due to a low degree of "RF care" when connecting the coaxial cable to the NMO connector. Observed carelessness results in the accidental addition of a stray series inductance, with a reactance comparable to the 50 ohm input impedance, generally worsening the match seen by the transceiver connected at the other end. However, most cable assemblies acquired and measured, performed reasonably at the lower UHF frequencies (400-512 MHz).

    Mini-UHF Antenna 3D CAD Files
    CAD Files available:
    IGES 3D
    STEP 3D
    SolidWorks 3D
    Pro/Engineer 3D
    Catia 3D
    Availability, specifications & prices subject to change without notice