Desktop VHF/UHF Scanner PRO-2045

The RadioShack PRO-2045 is a desktop VHF/UHF receiver and scanner manufactured by Uniden in the mid-to-late 1990s. It is noted by enthusiasts as a particularly effective scanner for monitoring military aviation (MilAir) and low VHF skip.

Technical Specifications:
According to data from RigPix, the scanner's key hardware specifications include:
Frequency Coverage (USA Model): Includes 29–54 MHz, 108–174 MHz, 216–512 MHz, and 806–1000 MHz (with some exclusions).
Memory Channels: 200 regular channels divided into 10 banks, plus 10 monitor and 10 priority channels.
Reception Modes: Supports both AM and FM modes.
Tuning Steps: Users can select between 5 kHz and 12.5 kHz steps.
Receiver System: Features a triple conversion superheterodyne system for enhanced signal clarity.
Power Requirements: Operates on a 12 VDC power supply with a current drain of less than 500 mA.

Notable Features and Operation:
Weather Alerts: Includes 7 NOAA weather channels equipped with a weather alert function.
Auto Sort Mode: Users can set the scanner to scan frequencies from lowest to highest within each bank rather than by channel number. This is activated by holding the AUTO button while powering on the device.
Specialised Search: Features "Hypersearch" for faster frequency scanning and a "Data Skip" function to bypass non-voice transmitters.
Expansion Options: Supports an optional CTCSS/PL tone board (model 20-0031) for filtering transmissions based on sub-audible tones.

Common Issues and User Reviews:
Memory Loss: A known issue for older units is the failure of the internal memory capacitor, which causes the scanner to lose programmed frequencies when disconnected from power. This can often be fixed by replacing the original capacitor with a modern 5.5V supercapacitor.
Performance Critiques: Reviewers on RadioReference have praised its performance for military airbands but noted a "long squelch tail" as a minor annoyance.
Connectivity: The unit lacks computer control or API functions, making it difficult to use with modern automated logging software. 

Here you find 2791 models, 2722 with images and 167 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Radio Shack (Tandy, Realistic, Micronta); USA