5W Analog Handheld

Analog Handheld VHF Transceiver

Technical Specifications

Frequency Range136 to 174 MHz
Power Output5W
Number of channels128

Aimed at increasing efficiency and enhancing customer service, the Sanchar STC-904+ series help operations run smoother with instant, quality communications. The palm size and lightweight STC-904+ portable radio delivers solid two-way performance at a very competitive price.

Channel Annunciation

The feature enables radio to report the current channel number when power on or switching channel, offering you notable convenience.

Power on Self-Test

The radio itself checks radio status automatically when power on, and emits alert if an error occurs (e.g. CPU error or EEPROM error), allows the user to early detect unit faults.

Long battery life

The standard 2200mAh Li-on battery, allows more than 10 hours operation. 


It is one type of circuit that is used to reduce the annoyance of listening to other users on a shared two-way radio communications channel. It is sometimes referred to as tone squelch. It does this by adding a low frequency audio tone to the voice.

Switchable Power (High/ Low)

The user can choose the transmitting power mode according to his specific communication needs.  (H: 5W  M: 2.5W   L: 1W)

Low Battery Alert

Sets a warning for a low battery level, before the situation becomes critical. Values are set to On to set the low warning and Off to ignore it. The radio blinks repeatedly.

Busy Channel Lockout (BCL)

This feature will not allow the user to transmit as long as the radio is receiving another signal. 

Time-out Timer (TOT)

It is used to set the continuous emission maximum time of Walkie talkies. When it is overtime, the radio will stop transmitting and prohibit re-transmitting in the period of time.

Channel Scan

The channel scan feature enables the radio to continuously scan each channel for activity. When activity is detected on a channel the scan process will stop and you will hear the transmission.

PC Programmable

Sanchar PC configurable radios can be connected to a computer and configured. These applications usually provide a user friendly way to adjust radio settings, or change user selectable frequencies.

Wired Clone

Sanchar radios are capable to have their configuration easily loaded from a different radio. This makes setup a breeze when your business has quite a few radios. Cloning through the programming software helps when you have purchased lots of radios, when you are adding new radios, or when you make changes to your configuration. 


Sanchar radios support the Voice Activated Transmit (VOX) feature that allows you to use your two way radio "hands-free". The radio will automatically begin transmitting when you speak into the hands free.

TX Inhibit

The Transmit Inhibit Mode is a mode in which the radio sends no radio transmission

Channel Spacing

To get a minimum frequency gap in between two channels

Battery Save

Save battery at time of no use which enhance battery life

Built-in Scrambler

The voice scrambling feature provides enhanced security by garbling your transmissions, allowing you to have conversations that are more private and secure.

Embedded Message

The radio’s memory can store messages including service and programming records, for remarkable ease of maintenance and service.

Stun/Kill & Revive

Provides enhanced security to prevent unauthorized use of lost or rental units, by remote inhibition of either transmit or transmit/receive. A stunned radio will return to operational use after receiving the revive code. 

Squelch Tail Elimination

During transmission, the random static sound is actually the radio trying to decipher the ambient background noise into meaningful audio. The squelch tail occurs when the transmission has just ended and the radio circuitry doesn't respond quite fast enough. Squelch Tail Elimination on Sanchar radios prevents this issue.


A sophisticated digital voice compression technology that reduces the static hiss between words. This technology extends the effective range of the radio and delivers noticeably clearer transmission quality.

Talk Around/ Reverse

The talk around function sets transmit and receive frequencies to the same frequency for communicating transceiver-to-transceiver.

Squelch OFF

Squelch is a specialized type of noise gate designed to suppress weak signals. Squelch is used in two-way radios and VHF/UHF radio scanners to eliminate the sound of noise when the radio is not receiving a desired transmitter.

Scan Skip

The Skip Scan leverages SEEK_NEXT_USING_HINT. It stores information about what set of keys/ranges of keys are being searched for in each column

SEL Call

Sel-call (selective calling) is a type of squelch protocol used in radio communications systems, in which transmissions include a brief burst of sequential audio tones. Receivers that are set to respond to the transmitted tone sequence will open their squelch, while others will remain muted


PTT ID, or Push-To-Talk ID, is a generic term for an automatic number identification (ANI)-like system used in two-way radio systems.


WSPR (pronounced "whisper") stands for "Weak Signal Propagation Reporter". It is a protocol, implemented in a computer program, used for weak-signal radio communication between amateur radio operators.

DTMF Signalizing

Dual-tone multi-frequency signaling (DTMF) is a telecommunication signaling system using the voice-frequency band over telephone lines between telephone equipment and other communications devices and switching centers.

DTMF keypad

The radio has a DTMF keypad which is used to dial telephone numbers or to issue commands to switching systems. Dual Tone Multiple Frequency signaling is the internationally standardized way which converts decimal digits into sounds that share enough essential characteristics with voice to easily traverse circuits designed for voice.

Backlit Display

Sanchar STC-804+ radios have a digital LCD display that displays useful information, such as your current channel. This feature allows you to turn on a lighted display, to make information easier to read in darker environments. 

Emergency Alarm key

The key on the radio is programmable to start the alarm and start transmitting if pressed for over 1 second. Restarting the power supply or pressing the alarm key again exits the emergency alarm function.

Battery Strength bar

Shows battery health condition

Battery Power Indicator

Upon press the programmable function key, the radio sounds"1", "2" or "3” to indicate the current battery level of low, satisfactory, or high respectively.


Frequency Range136 to 174 MHz
Power Output5W
Number of channels128