Description
Professional 1/4-Wave VHF Mobile Roof-Mount Antenna
Genuine Motorola unity-gain through-hole vehicular antenna engineered for 144–150.8 MHz VHF mobile transceivers with optimal vertical radiation for urban environments.
The Motorola HAD4007A (catalog part HAD4007 / HAD4007A) is an authentic original equipment manufacturer (OEM) 1/4-wave roof-mount mobile antenna designed for commercial and public safety VHF mobile two-way radios. Factory-tuned for the 144–150.8 MHz VHF spectrum (operating across the broader 144–165 MHz mobile band), this unity-gain antenna delivers dependable vehicular RF transmission and reception. Its quarterwave radiating geometry generates a high-angle vertical signal pattern that excels in dense urban canyons, municipal centers, and obstructed environments where high-rise buildings and physical terrain reflect horizontal signals.
Engineered for permanent vehicle installation, the Motorola HAD4007A mounts directly through a standard 3/4-inch vehicular roof hole to establish a solid ground plane with the vehicle's metal chassis. Built with a 19-inch resilient stainless steel radiating whip and a weather-sealed chrome brass base mounting nut, it withstands highway wind drag, low-clearance brush, automatic car washes, and harsh outdoor exposure. Intended for installations that do not require an active GPS receiver element, the HAD4007A operates in full compliance with commercial FCC Licensing standards to provide clear voice and data communications across Motorola CM series and APX series mobile radios.
Key Features & Benefits
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1/4-Wave Vertical Radiation Pattern: Delivers a high-angle radiation lobe that provides superior signal penetration in dense urban environments and reflective terrain.
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144–150.8 MHz VHF Tuning: Factory-engineered for optimal VSWR and transmitter efficiency across the commercial 144–150.8 MHz VHF frequency band.
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Unity Gain Performance: 0 dBd (2.15 dBi) unity gain design provides broad omnidirectional coverage without dead spots around the vehicle perimeter.
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Permanent Through-Hole Mount: Fastens through a standard 3/4-inch vehicular roof hole, creating a weatherproof seal and establishing direct metal-to-metal ground plane coupling.
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Resilient 19-Inch Stainless Steel Whip: High-strength flexible whip rod flexes on impact and returns to true vertical alignment without deformation.
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Non-GPS Simplified Design: Purpose-built for installations utilizing dedicated external GPS receivers or installations that do not require satellite tracking.
Specifications
| Attribute |
Details |
| Brand |
Motorola Solutions |
| Model / SKU |
HAD4007A / HAD4007 |
| Product Type |
1/4-Wave Mobile Vehicular Roof-Mount Antenna |
| Frequency Band |
VHF |
| Frequency Range |
144–150.8 MHz (Unity Gain Bandwidth) |
| Antenna Gain |
Unity Gain (0 dBd / 2.15 dBi) |
| Radiation Pattern |
Omnidirectional (Vertical Polarization) |
| Mounting Architecture |
Permanent Through-Hole Roof Mount (Standard 3/4-inch) |
| Whip Length |
Approx. 19.0 in (482.6 mm) |
| Whip Material |
17-7 PH Stainless Steel Rod |
| Base Hardware |
Chrome-Plated Solid Brass Mounting Nut |
| Integrated GPS |
No |
| Operating Temperature |
-40°C to +85°C (-40°F to +185°F) |
Compatibility
Compatible Motorola Mobile Two-Way Radios
|
|
|
|
| CM200 |
CM200D |
CM300 |
CM300D |
| APX1500 |
APX4500 |
APX6500 |
APX7500 |
| APX8500 |
|
|
|
What’s Included
| Description |
SKU/Model |
Status |
| Motorola 1/4-Wave VHF Antenna Whip Rod & Base Mounting Nut |
HAD4007A |
Included |
Recommended Accessories
Mobile DC Power Harnesses & Hardware
Microphones & Audio Accessories
More Resources
Frequently Asked Questions
What does the "A" suffix at the end of part number HAD4007A mean?
The "A" suffix designates the latest official manufacturing revision from Motorola Solutions. HAD4007A is the current production version replacing the base part number HAD4007, maintaining identical physical mounting, whip dimensions, and electrical specifications across all compatible mobile transceivers.
What is the exact frequency range of the Motorola HAD4007A?
The HAD4007A is factory-tuned specifically for the VHF 144–150.8 MHz frequency band (with unity gain operation across the 144–165 MHz mobile family). Note: While some legacy Motorola documentation erroneously referenced the 136–144 MHz band due to shared catalog descriptions with part number HAD4006A, the HAD4007A is specifically designed for 144–150.8 MHz operation.
Why choose a 1/4-wave antenna over a 5/8-wave gain antenna?
A 1/4-wave antenna radiates its RF energy at a higher vertical angle than a 5/8-wave antenna. In urban environments, hilly terrain, and downtown corridors, this higher vertical angle allows the signal to bounce over obstructions and penetrate between tall structures where higher-gain horizontal signals become blocked.
Does this antenna require a vehicle ground plane?
Yes. The Motorola HAD4007A is a 1/4-wave antenna that requires a metal ground plane (such as the vehicle's steel or aluminum roof) to achieve a proper 50-Ohm impedance match and low VSWR.
Does the HAD4007A include integrated GPS capability?
No. The HAD4007A is an RF-only vehicular transmission antenna and does not contain internal GPS receiving components. It is intended for vehicles that do not use radio GPS tracking or that utilize a separate GPS antenna feed.
Warranty
1-year manufacturer’s replacement warranty.
