From The RadioReference Wiki

The Uniden SDS200 is a mobile/base scanner manufactured by Uniden America announced in Q1 of 2019 with an introductory MSRP of $749 (USD).

It is the first scanner to incorporate I/Q technology and SDR (Software Defined Radio) in a mobile/base platform. This provides superior performance scanning LSM (Linear Simulcast Modulation) systems. It uses the Uniden HomePatrol database and Uniden Sentinel Software for ease of programming. Its front panel interface and menus are functionally identical to the SDS100.



Programming and Interface

Most menus and buttons are identical to the SDS100.

  • ZIP Services Mode: Enter your ZIP code, service type, and range. The scanner will aggregate a list of nearby radio channels to listen to.
  • GPS Mode: Purchase GPS and cable to have the scanner automatically update its location to pull in nearby radio channels without having to enter a ZIP code
  • Manual Entry: Create Favorite lists by manually entering the channel/system information, or import it from the RR DB preloaded on the SD Card (Complete Front Keypad Programming ability)
  • Sentinel: Use a PC with Uniden Sentinel Software to update scanner firmware, update RR Database, and create your own Favorite Lists, Systems, Sites, Channels, TalkGroups and RadioIDs in addition to control scanner settings and customize the LCD Screen.


  • Discovery Mode - helps you find new channels on trunked systems and frequency ranges.
  • Analysis Mode - includes Trunked System Analysis of Signal, Quality and Activity, and EDACS/LTR LCN Finder.
  • Instant Replay - Plays back up to 240 seconds of the most recent unsquelched transmissions without the added quite time between those transmissions..
  • Recording of Audio - Captures & Stores individual transmissions until squelch closes for later playback with time stamping and some metadata via Scanner or PC.
  • 8GB microSD card holds the entire US and Canada database of radio systems, plus leaves room for hundreds of hours of audio recording.
  • TrunkTracker X -- Supported System Types and Voices below
  • Multi-Site Trunking - Lets you program the scanner to share a Trunked System's TGIDs across multiple Sites without having to duplicate TGIDs.
  • P25 One-Frequency Trunking - The scanner can follow individual talk groups on P25 single-frequency systems that use both NAC and TGID’s for squelch control and user identification.
  • Individual Site P25 decode Threshold, Settings: Auto, Manual, Default
  • Quick key (QK) capable
    • 100 Favorites Lists QKs
      • 100 Systems QKs
        • 100 Departments QKs
  • Startup Configuration
    • Audible Independent Alert Tone Volume – lets you set the volume level of the following tones: Key Beep, Emergency Alerts, Channel Alerts, Tone-Out hits, and Close Call Alert.
  • Encryption Muting - APCO P25 PI encrypted voice is muted automatically.
  • Number Tagging - Number tags allow you to quickly navigate to a specific Favorites List, System, and/or Channel.
  • Easy Scan Control using the System, Department and Channel SOFTKEY Hold buttons.
  • Easy navigation to Favorite List, 1st on Menu w visual On/Off for FQK listing
  • Easy navigation to System List 1st on Menu w visual On/Off for SQK listing.
  • Custom Search - lets you program up to 10 search ranges.
  • 3 Quick-Access Search Keys
  • Search with Scan for Custom Searches.
  • Quick Search - Allows you to start searching at the displayed frequency, or enter a frequency and start searching.
  • Channel delay adjustable to increments of 0-2,5,10,30,
  • Negative Channel delay or dropout (forced resume) adjustable to -2, -5, -10 seconds.
  • 64 character text tagging for each system, site, department, channel, talkgroup, search range, Tone-Out, and SAME group.
  • Date/Time indication on display with time stamping for recordings.
  • Keypad Lock prevents anything being changed but Volume and ON\OFF - lets you hand the scanner to a novice user.
  • AVOID via Front Keypad or Menu
    • Temporary Avoid lets you quickly silence unwanted Systems, Departments, Channels, or search frequencies while allowing you to restore Avoids by cycling power.
    • Permanent Avoid lets you lockout anything unwanted by a quick double press
    • Ability to Clear All Avoids quickly and easily in a few MENU presses
  • Conventional Channel Priority with Priority Do-Not-Disturb, w some trunk system and priority
    • Adjustable Priority check interval and quantity.
  • Uniden Close Call, with Close Call Do Not Disturb, Close Call Priority (or Primary), and Close Call Temporary Store.
  • Weather
    • Weather
    • NOAA Weather Alert with SAME
    • Weather Priority.
  • Receive Signal Strength Indicator displayed.
  • Fire Tone Out alert with two-tone paging with up to 32 tone slots.
    • Also see the Fire Tone Out article.
    • Fire Tone Out Search - built-in frequency counter displays the received tones.
  • Channel Volume Offset individually per channel.
  • Broadcast signal ignore while searching (TV and radio station frequencies, pagers, etc) with 10 custom bands.
  • Repeater Reverse
  • Intermediate Frequency Exchange - changes the IF used for a selected frequency to help avoid image and other mixer-product interference on a frequency.
  • Backlight-on-Squelch option allows the backlight to remain on during an entire transmission.
  • Adjustable Band defaults Modulation and Steps

Tech Specs

  • 3.5" color LCD screen (147 user-selectable colors for text and background)
  • Backlit Display and Keypad.
  • Front panel-actuated Function and Menu controls.
  • 3 front SOFTKEY buttons (functions change depending on scanner status).
  • Visual Independent Alert LED w/ 7 colors and 3 patterns.
  • Direct Ethernet Connectivity for Streaming and Control
  • SDS200 Display options and menus via Universal Radio


  • USB PC Connectivity/charge port (USB Mini-B)
  • USB PC Connectivity (USB Micro) - use to be determined
  • Direct Ethernet Connectivity for Streaming and Control

Uniden TWiki Entries

RR System Compatibility

  • Analog Conventional Frequencies

System Types

System Voices

  1. Requires, optional, Paid Upgrade w/ Registration via
  2. Firmware updates via MicroSD card or through USB port.

Frequency Coverage

(subject to change)

  • 25-512 MHz
  • 758-824 MHz
  • 849-869 MHz
  • 894-960 MHz
  • 1240-1300 MHz

Modulation & Steps

  • AM, NFM, FM, WFM, or FMB.
  • 5, 6.25, 7.5, 8.33, 10, 12.5, 15, 20, 25, 50, or 100 kHz

Included in the Box

  • SDS200 Scanner Radio
  • BNC Telescopic Whip Antenna
  • Registration card
  • Wall brick
  • Owner’s manual printed copy w online pdf format available
  • microSD Card (8GB) installed
  • Packaging
    • External Box
    • Formed Cardboard packaging - molded pulp
  • Various plastic bags for listed components

Included on the microSD CARD

  • A copy of the RadioReference Database (HPDB)
  • Uniden's Sentinel Software. which can also be found here
  • Pre-Formatted with FAT 32 Filing System
    • Main Folder named "TBA"
      • Below TBA folder contains:
      • (7)Sub-Folders: activity_log, alert, audio, discovery, favorite_list, firmware, HPDB
      • (4)Loose Files:
      • Configuration files: app_data.cfg, discovery.cfg1, profile.cfg
      • Set-Up file: scanner.inf

Frequently Asked Questions Support Pages


Supporting Software

Mailing Lists/Social


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