What is the difference between MGT 123 and MGT 124?

The two models share the same form factor and band. MGT 123 outputs 100 mW with up to ~20 hours using two AA cells; MGT 124 outputs 500 mW with about 2 hours using the same cells.

Which batteries are used?

Both models use two standard 1.5 V AA cells in an internal holder, enabling quick, low-profile replacement in the field.

What modulation and frequency control are used?

Wide-band FM (WFM) with crystal frequency control for stable links in the 416.5–423.5 MHz band.

MGT 123 (100mW) / MGT 124 (500mW) — Pocket Belt Analogue Audio Transmitter

Q: Who can purchase these systems?

Supply is restricted to qualified government, defence and law-enforcement customers or accredited partners. Local spectrum regulations apply.

The MGT 123 / MGT 124 are compact, belt-mounted analogue transmitters designed for discreet, close-target operations. Both versions share a rugged metal enclosure with a built-in battery compartment, a simple power switch, an external microphone (≈70 cm lead) and a flexible external antenna for unobtrusive routing. Crystal control and WFM modulation provide stable, intelligible audio on the 416.5–423.5 MHz band.

Main features

Tough, pocket-size design with protective fabric cover.
Two output profiles: 100 mW (MGT 123) or 500 mW (MGT 124).
Standard 2 × AA cells; tool-less replacement for rapid turnaround.
Clean audio path with matched external microphone (≈70 cm).
Sliding steel frame locks components securely while keeping the battery holder accessible.

Typical use: body-worn close monitoring and mobile deployments where simple controls, predictable RF behaviour and quick battery swaps matter.

MGT 123 / MGT 124 Pocket Belt Analogue Transmitter with external microphone and AA cells

Technical overview

MGT 123 — 100mW

Technical specifications for MGT 123 100mW
Frequency	416.5 – 423.5 MHz
Frequency control	Crystal
Modulation	WFM
Power supply	2.5 – 3.5 V (2 × 1.5 V AA)
Output power	100 mW
Continuous operation (2 × AA)	up to ~20 hours (typical)
Dimensions	80 × 48 × 18 mm

MGT 124 — 500mW

Technical specifications for MGT 124 500mW
Frequency	416.5 – 423.5 MHz
Frequency control	Crystal
Modulation	WFM
Power supply	2.5 – 3.5 V (2 × 1.5 V AA)
Output power	500 mW
Continuous operation (2 × AA)	approx. 2 hours (typical)
Dimensions	80 × 48 × 18 mm

Typical kit contents

Transmitter unit (MGT 123 or MGT 124)
External microphone (≈70 cm lead)
Flexible whip antenna
Protective fabric belt cover

Contents may vary by configuration and jurisdiction. Confirm at order.

Procurement, compliance & support

Availability is restricted to qualified government, defence and law-enforcement customers or accredited partners. End-use and export controls apply; always observe local spectrum regulations. We provide confidential integration, operator training and responsive after-sales support.