VHF 136–150.8 MHz 14cm Heliflex Antenna

The Motorola PMAD4042A VHF 136–150.8 MHz Heliflex Antenna is a durable replacement antenna designed to provide reliable VHF transmit and receive performance for compatible Motorola portable two-way radios.

Operating across the 136–150.8 MHz VHF frequency range, the PMAD4042A is specifically tuned for compatible radios operating within the lower portion of the commercial VHF band.

The antenna features a 14 cm (approximately 5.5-inch) Heliflex design, providing a balance between communication performance, durability, and comfortable everyday portable-radio use.

Motorola's Heliflex antenna construction is designed to provide dependable radio performance while remaining flexible enough to accommodate normal movement during everyday use.

The flexible construction makes the PMAD4042A particularly practical when the radio is worn on a belt, carried on a vest, or used throughout an active workday. The antenna can flex when it comes into contact with clothing, equipment, vehicle interiors, shelving, or other surrounding objects.

Compared with a compact stubby antenna, the PMAD4042A provides a longer antenna element for users who prioritize radio communication performance and coverage over the smallest possible antenna profile.

The PMAD4042A is an excellent replacement for a lost, damaged, bent, or worn original antenna and can also be kept as a spare for businesses and organizations maintaining fleets of compatible Motorola portable radios.

Key Features

• VHF Heliflex antenna

• 136–150.8 MHz frequency range

• 14 cm antenna length

• Approximately 5.5 inches long

• Flexible Heliflex construction

• Designed for compatible Motorola portable two-way radios

• Provides transmit and receive antenna functionality

• Tuned for lower-band VHF operation

• Longer profile than compact stubby antennas

• Flexible construction accommodates normal movement

• Suitable for belt-worn portable radios

• Designed for everyday commercial and professional use

• Suitable for indoor and outdoor radio applications

• Direct replacement for compatible original antenna

• Useful as a spare antenna for radio fleets

• No programming required

• No external power required

• Portable radio sold separately

• Genuine Motorola Solutions accessory

• Motorola part number: PMAD4042A

• Base part number: PMAD4042

Frequency Range

The PMAD4042A operates across:

136–150.8 MHz

This places the antenna within the VHF frequency band.

The antenna should only be used with compatible VHF portable radios operating within the supported frequency range.

Compatible Radios

Motorola-documented applications include:

• Motorola CP100d

• Motorola DP1400

• Motorola DEP250

• Motorola DEP450

• Motorola XiR P3688

• Select additional compatible Motorola VHF portable radios

The PMAD4042A has been used across multiple generations of Motorola commercial portable radios.

Always verify both the portable radio model and programmed operating frequency before ordering an antenna.

Heliflex Antenna Design

The PMAD4042A features a:

14 cm / Approximately 5.5-Inch VHF Heliflex Antenna

Motorola's Heliflex antenna design provides a flexible antenna construction intended for dependable portable-radio communications.

The flexible configuration makes the antenna convenient when the radio is:

• Worn on a belt

• Carried on a work vest

• Used while walking

• Used while climbing or bending

• Carried around machinery or equipment

• Used inside vehicles

• Used throughout extended work shifts

The flexible construction allows the antenna to accommodate normal movement and incidental contact during everyday professional use.

Related Motorola VHF Antennas

Motorola offers several similar VHF antenna options for compatible radio platforms:

• PMAD4012A – VHF 136–155 MHz 9 cm Stubby Antenna

• PMAD4014A – VHF 136–155 MHz 14 cm Whip Antenna

• PMAD4042A – VHF 136–150.8 MHz 14 cm Heliflex Antenna

• HAD9742A – VHF 146–162 MHz Stubby Antenna

• HAD9743A – VHF 162–174 MHz Stubby Antenna

• NAD6502AR – VHF 146–174 MHz Heliflex Antenna

Selecting the correct antenna depends on both the portable radio model and its operating frequency range.

Important

The PMAD4042A is a VHF Heliflex antenna designed for operation from:

136–150.8 MHz

It is not a UHF antenna.

Do not select a portable radio antenna based solely on physical fit. Antennas are designed for specific frequency ranges, and the antenna should match both the radio platform and its programmed operating frequencies.

Do not confuse the PMAD4042A with the similar PMAD4014A:

PMAD4042A = VHF 136–150.8 MHz 14 cm Heliflex Antenna

PMAD4014A = VHF 136–155 MHz 14 cm Whip Antenna

Although both antennas are approximately 14 cm long and cover similar portions of the VHF band, they are separate Motorola antenna models with different specified frequency ranges and constructions.

Always verify the radio model and operating frequency before ordering.

The portable radio is not included.

Specifications

Manufacturer: Motorola Solutions
Part Number: PMAD4042A
Base Part Number: PMAD4042
Accessory Type: Portable Radio Antenna
Antenna Type: Heliflex
Band: VHF
Frequency Range: 136–150.8 MHz
Length: 14 cm / Approximately 5.5 Inches
Flexible: Yes
Programming Required: No
External Power Required: No
Radio Included: No
Application: VHF Portable Two-Way Radio Communications