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VX-920 Portable Analog Radio Series

Dependable Portable radio communications For Long-Term Reliability

The VX-920 Portable Analog Radio Series is ready to respond when you are with stateof-the-art engineering and a wide array of features, providing great value in its class.

Withstands Harsh Environments

Rain, snow, fire suppression spray and dust are no problem for these radios manufactured to strict IP ratings. The VX-820 Series meets international waterproofing standard IP 57 where fresh water does not harm the radio when submersed to a depth of three feet for up to 30 minutes.

Intrinsically Safe

Intrinsically safe models are SGS certified to the requirements of ANSI/UL913 5th Edition for use in Class I, II, III, Division 1; Groups C, D, E, F, G; Temp T3C hazardous locations.

Never Miss An Important Call 

Includes DTMF paging and unmatched flexibility in scanning features that are designed to optimize operation in a wide variety of environments. In addition to basic scan, you also get Priority, Dual Watch, Follow-me, Follow-me Dual Watch and Talk Around scanning with a programmable home channel function built-in.

When Safety Counts – Never Be Alone 

When help is needed, the VX-920 Portable Analog Radio Series has Emergency notification that will switch to a designated channel and send an emergency alert. The radios also include Remote Listen which turns the radio on remotely if needed to check out what is happening near the radio.

Loud Audio for Noisy Environments 

With 700 mW audio output, be assured of hearing critical information you need in most situations.

Exclusive Auto-Range Transpond System (ARTS™)

Always know your connection status. Only Vertex Standard portable radios are designed to inform you when you and another ARTS™-equipped portable radio are within communication range. If out of range, your radio senses no signal has been received and beeps to alert you. A great solution to keep your workers coordinated.

Choose the Right VX-920 Portable Analog Radio to match your need:

VX-921 Portable Analog Radio:

  • Non-display 
  • 48 channels/ 3 groups
  • 4 custom-programmable keys

VX-924 Portable Analog Radio:

  • 12-Character LCD
  • 512 channels/ 32 groups
  • 8 custom-programmable keys
  • User selectable tone

Additional Features

  • Wide Band Coverage
  • Programmable 3-position toggle key
  • Direct Channel Recall
  • RX/TX Battery power save
  • DTMF ANI
  • Stun/kill/revive (5-tone)
  • Lone Worker
  • 2-Tone encode and multiple 2-tone decode
  • 5-Tone signaling
  • Auto-Range Transpond System (ARTS™)
  • Compander
  • Whisper
  • Minimum volume control
  • Clear voice and audio pitch control
  • 7-Color LED call alert indicator
  • Radio-to-radio cloning
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Technical Specifications

VHF UHF
General Specifications:
Frequency Range 134 - 174 MHz 400 - 470 MHz; 450-512 MHz
Number of Channels and Groups 512 / 32 Groups (VX-924); 48 / 3 Groups (VX-921)
Power Supply Voltage 7.4 V DC ± 10%
Channel Spacing 12.5/20*/25* kHz
PLL Steps 1.25 / 2.5 / 5/ 6.25 kHz 5/ 6.25 kHz
Battery Life (5-5-90 duty) 3000 mAh FNB-V129LI-UNI 3000 mAh FNB-92LI/ FNB-V92LIIS 2300 mAh FNB-V128LI-UNI 2300 mAh FNB-V87LIA 1380 mAhFNB-V127LI-UNI 1380 mAh FNB-V86LIA 23 hours (w/ saver) / 18 hours 23 hours (w/ saver) / 18 hours 18.4 hours (w/ saver) / 14.3 hours 18.4 hours (w/ saver) / 14.3 hours 11 hours (w/ saver) / 8.6 hours 11 hours (w/ saver) / 8.6 hours 21.5 hours (w/ saver) / 16.5 hours 21.5 hours (w/ saver) / 16.5 hours 17.2 hours (w/ saver) / 13.2 hours 17.2 hours (w/ saver) / 13.2 hours 10.3 hours (w/ saver) / 7.9 hours 10.3 hours (
IP Rating IP 57
Operating Temperature Range -22° F to 140° F (-30° C to + 60° C)
Frequency Stability ± 2.5 ppm
RF Input-Output Impedence 50 Ohms
Dimension (H x W x D) VX-921 Model 5.3 x 2.3 x 1.6 inches (133.0 x 57.5 x 40.5 mm) FNB-V129LI-UNI 5.3 x 2.3 x 1.7 inches (133.0 x 57.5 x 43.5 mm) FNB-V92LI (and IS) 5.3 x 2.3 x 1.6 inches (133.0 x 57.5 x 40.5 mm) FNB-V128LI-UNI 5.3 x 2.3 x 1.6 inches (133.0 x 57.5 x 40.5 mm) FNB-V87LIA
Weight (Approx.) 14.8 oz. (420 g) FNB-V129LI-UNI 16.1 oz. (456 g) FNB-V92LI (and IS) 14.7 oz (416 g) FNB-V128LI-UNI 11.4 oz. (323 g) FNB-V87LIA 15.3 oz. (433 g) FNB-127LI-UNI
Receiver Specification: measured by TIA/EIA-603
Sensitivity (12 dB SINAD) 0.25 / 0.32 µV
Adjacent Channel Sensitivity 75 dB / 70 dB
Intermodulation 75 dB / 70 dB
Spurious Image Rejection 80 dB 75 dB
Audio Output 700 mW (Internal @ 16 Ohms 5% THD)
Transmitter Specifications: measured by TIA/EIA-603
Output Power 5 / 2.5 / 1 / 0.25 Watt
Modulation 16K0F3E, 11K0F3E
Conducted Spurious Emissions 70 dB
FM Hum and Noise 45 dB / 40 dB
Audio Distortion < 3% @ 1 kHz


Applicable MIL-STD

Standard MIL 810C MIL 810D MIL 810E MIL 810F
Low Pressure 500.1 500.2 500.3 500.4
High Temperature 501.1 / 1,2 501.2 / 1, 2 501.3 / 1, 2 501.4/ 1, 2
Low Temperature 502.1 / 1,2 502.2/ 1, 2 502.3/ 1, 2 502.4/ 1, 2
Temperature Shock - 503.2/1 503.3/1 503.4/ 1
Solar Radiation 505.1/ 1 505.2/ 2 Cat.A1 505.3/ 2 Cat.A1 505.4/ 1,2 Cat.A1
Rain 506.1/ 1 506.2/ 1 506.3/ 1,2 506.4/ 1
Humidity 507.1 / 1, 2 507.2/ 2, 3 507.3/ 2, 3 -
Salt Fog 509.1 509.2 509.3 509.4
Dust 510.1/1 510.2/ 1 510.3/ 1 510.4/ 1,3
Vibration 514.2/ 8,10 514.3/ 1 Cat 10 514.4/ 1 Cat 10 514.5/ 1 Cat 20, 24
Shock 516.2/ 1 516.3/ 1 516.4/ 1 516.5/ 1


Operating Manuals
VX-920_920IS_OM_USA_EN_2014

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1.23 MB
VX-920_920IS_OM_USA_EN_2015

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1.24 MB
VX-920E OM EU EN 2015-2

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1.21 MB
Spec Sheets - North America
Vertex Standard VX-920 Series Spec Sheet - North America - Mar 2014

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959.46 KB

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