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  • Regular price $399.99


Measuring only 32mm x 28mm with a thickness of .8mm. There is no mounted battery compartment, the X1-CRT14 comes lightly potted, which opens options for custom mounting or encasing to meet your specific needs.

This Transmitter allows you to attach any power/battery option suited for your needs (≤ 3.7 Volts). The X1-CRT14 has +/- solderable power/battery input terminals for you to attach custom power supply packs, enabling you to dramatically extend your transmitter's surveillance operation time using any Li-Ion power option or any custom battery pack. If you want us to attach a button cell battery holder for a CR2032 battery (CR2032 will provide 24-30 hours of audio surveillance) please let us know in your order notes.

No switches or indicator lights.

This is a permanent, always-on "hot-microphone", once the battery is inserted the X1-CRT14 will begin live transmission of ambient and surrounding audio without interruption on the Ultra High-Frequency band. The X1-CRT14 will broadcast audio over a distance of 500 metres in a cluttered urban environment, up to 1 kilometre with LOS, through concrete, drywall, and thick bush to any UHF receiver, it operates on any battery or power source pushing 3V to a maximum of 4.7V.

Use this transmitter to remotely listen to an area of interest that requires discreet acoustic monitoring. We recommend any handheld UHF receiver capable of tuning into the 400MHz-434MHz range, this is a standard range in most UHF receivers. Our recommended handheld receiver is the AnyTone AT-318UV.

Your X1-CRT14 will arrive with its specific Tx/Rx frequency noted on its back.

Power Supply Options
1x CR2032 (3v) : 24 Hours Of Continuous Operation.

1x 2600 mAh 18650 (3v) : 260 Hours Of Continuous Operation.

1x 3600 mAh 18650 (3v) : 360 Hours Of Continuous Operation.

Dimensions 15mm x 28mm x .8mm
100Hz ~ 20kHz Panasonic: Analog Microphone Electret Condenser. Directional Characteristic: Omni-Directional
Sensitivity: -7.0 ±4 (0 dB = fs/Pa@1kHz).
Signal to Noise Ratio: 78 dB Typ. at 1kHz.
Max Input Sound Level: 101 dB SPL Typ.

Weight Without Battery: 8g
Output (RF) power 14mW
Antenna 60mm OR 110mm: 1g Shielded.
Frequency Range
430MHz-439 MHz, 2.5 kHz step.

Effective Range 15m From Centre.
Stability Highly Stable. Crystal Referenced Phase-Locked Loop.
Crystal 00k/ASK Data Transmitter.

Obsidian's transmitters are easily paired with any compact hand-held transceiver.

In order to maintain its longevity, the X1-CRT14 is potted with a compound or wrapped in heat-shrink which seals all onboard components, only the microphone and the battery terminals are accessible and made visible.

We can design for your needs. Obsidian Intelligence has designed and manufactured hidden and covertly disguised audio surveillance transmitters for clients globally.

Contact us for turnkey solutions.

(PCB REV 2.0)