DTMF DECODERS
PDR-01 – HANDHELD DTMF READER
Features:
• 128 x 65-pixel Graphic Display.
• Battery level and charging indicator on display.
• Internal rechargeable LiFePO4 AA Battery in a socket for easy replacement.
• Battery charging via USB-C connector.
• Internal Real-Time Clock circuit for Date and Time stamping.
• Telephone Connector and 3.5mm Jack both for Tone Input.
• Received DTMF displayed in 2 Lines of 16 digits along with Date and Time of each reception. Each line can hold up to 48 Digits, displayed in 16-digit chunks, with the display scrolling Left and Right.
• Non-Volatile Memory for the last 1024 entries of up to 48 digits, including Date and Time.
• Time Format: AM/PM or 24-Hour.
• Date Format: Month-Day-Year or Day-Month-Year.
• Decoder Gain Adjustable in: -12, -6, 0, +6, and +12 dB.
• DTMF Speed Adjustable in LOW, MID and HI (5, 10, and 20 Digits/Second).
• DTMF reception Window Time adjustable from 0.1 to 5.0 seconds.
• Decodes manually or automatically generated DTMF from 0.2 to 20 Digits/Sec.
• Display Backlight with adjustable time for battery saving.
• Adjustable display contrast.
• Optional Auto Shutdown after 30 minutes of inactivity.
• Automatic Key Repeat when a key is Held Down.
Specifications:
• Signaling Format: Standard DTMF (Decodes all 16 DTMF tones)
• Sequence Length: Up to 48 Digits
• Non-Volatile Memory: Stores the last 1024 DTMF input sequences with Date and Time stamps
• Input Impedance: Greater than 150K Ohms, balanced.
• Valid Input Signal Levels: -34 to -4.0 dBm. (Each tone in the composite signal)
and Decoder Gain adjusted to 0 dB.
• Decoder Gain Adjustment: -12, -6, 0, +6, +12 dB.
• Decoding Bandwidth: ±2.3% of nominal DTMF frequency.
• Noise Tolerance: -12 dB (Referenced to the minimum valid acceptance level).
• Twist Acceptance: -8 to +4 dB.
• Typical Minimum Tone-ON Time:
– Low DTMF Speed: 90ms (Used for 5 DPS).
– Medium DTMF Speed: 40ms (Used for 10 DPS).
– High DTMF Speed: 23 ms (Used for 20 DPS).
• Data Rate: 0.2 to 20 Digits/Second.
• Power Source: Internal rechargeable LiFePO4 3.2V 650mAh AA Battery.
• Dimensions: 3.5″W, 5.7″D, 1.9″H.
Specifications are Subject to Change Without Notice
Prices:
• PDR-01: NA
LEGACY DTMF DISPLAY DECODERS
ADD-100 Display Decoder
• Decodes & displays DTMF ANI & ENI
• Easy to program & install
• Easy to read display
• Infrared remote control
• Optional serial output
• Dimensions: 7.75″W x 1.8″D x 2.75″H
Description
The ADD-100 decodes and displays DTMF ANI and Emergency ANI. The unit displays up to 6 characters and each character is 1 inch in height for viewing at a long distance. The ADD product comes with an infared remote controller to silence emergency alerts and to scroll through the last 6 ANI’s.
Applications
The ADD-100 is ideal for monitoring radio communications in fleets such as public safety, taxi, towing, etc.
Installation
The ADD-100 can be connected to most any base station radio.
ADD-MF Multi-Format Decoder
• Decodes & displays DTMF, 5-Tone, Harris’s G-Star™, Motorola’s MDC-1200®, Kenwood’s FleetSync® ANI’s & ENI’s
• Format digit to identify signaling format
• Easy to program & install
• Easy to read display
• Infrared remote control
• Optional serial output
• Dimensions: 7.75″W x 1.8″D x 2.75″H
Description
The ADD-MF decodes and displays ANI and Emergency ANI in DTMF, 5-Tone, Harris’ G-Star™ (aka GE-Star), Motorola’s MDC-1200® and Kenwood’s FleetSync® all in a single unit. The unit displays up to 6 characters and each character is 1 inch in height for viewing at a long distance. The ADD product comes with an infared remote controller to silence emergency alerts and to scroll through the last 6 ANI’s. When used for Kenwood’s NXDN unit ID the ADD must be ordered with the ADD Option D and the NXDN protocol must be requested.
Applications
The ADD-MF is ideal for monitoring radio communications in fleets such as public safety, taxi, towing, etc.
Installation
The ADD-MF can be connected to most any base station radio. When used for Kenwood’s NXDN unit ID the ADD must be connected to a Kenwood NXDN capable radio.
ST-888 DTMF Decoder
• Compact Size — attractive console measures only 8.0″ W x 4.3″ D x 1.7″ H8-Digit Display
• Code Validation — internal validation check accepts only valid code sequences.
• Variable Data Rate — accepts incoming digits from 1 to 20 dps to accommodate both manual and automatic encoders.
• Internal Clock and Calendar — to print out time and date of each transmission (with optional iDP 3110 printer).
• ENI Compatible — provides audibleinternal alarm and external alarm output upon receipt of ENI (Emergency Number Identification) code.
• Two Output Ports — for easy connection to a computer and external printer.
• Internal Memory Stack — allows dispatcher to scroll through the last eight ANI codes received.
PD-822 DTMF Decoder
• Ideal For ANI/ENI, Fleet Management or Status Indication
• 8-Digit Display
• Decodes All 16 Digits
• Decodes 0.5 to 20 DPS
• Audible Alarm
• Decodes 1 to 8 Digits In Length
• Transistor Output For External Alarm
• Form-C Relay For DTMF Speaker Muting
• Wide Input Range 30-2500 mV rms
• Parallel Output Port Interfaces To Printer
• Serial Output Port Interfaces To Computer
• Time and Date Stamp
The PD-822 is a DTMF Decoder designed to decode and display the DTMF NUMBERS being sent from the AE-1 or the AE-2.
It offers a wide dynamic input range with an excellent tolerance for twist and noise.
The display will show up to 8 digits at a time allowing many selective and identification options to be designed into a system.
One of the special features of the PD-822 is that it is designed to detect a ROUTINE DTMF signal and an ALERT or ENI DTMF signal just by using a different prefix.
For status monitoring, or managing a fleet or system, an ending digit may be displayed to indicate status or position.
Using different prefixes enables the system organizer or planner to set up his fleet or system to detect multiple systems on the same frequency or input line by adding additional PD-822’s.
More detailed information and application ideas may be obtained by requesting a PD-822 Manual from Pipo.
Last Updated: 10/28/2025 - 12:59 PM PST