Lutron FC2500A Frequency is a portable, pocket sized 2.5 GHz frequency counter designed for high-sensitivity measurements across VHF and UHF frequencies.
Features :
- High sensitivity for the VHF & UHF freq. measurement, useful for the CB amateur.
- Handheld & pocket size instrument.
- Wide measuring range up to 2.6 GHz.
- Good resolution, 0.1 Hz min. display unit for 10 MHz range.
- Used the exclusive Microprocessor IC offered, the intelligent function : Frequency, Period, Multi resolution, Data hold, Relative measurement, Data record( Max., Min., Average reading).
- Auto power off & manual power off.
- LCD display for low power consumption & clear read-out even in bright ambient light condition.
- The instrument used the low PPM crystal time base to offer high accuracy measurement.
- The optional telescoping antenna accessory can be used to pick up transmit frequencies from handheld, fixed or mobile radios such as : POLICES, FIRE FIGHTER’S, HAM, TAXI, AIRCRAFT MARINE, etc. at ranges of approaching 5 to 30 cm(depending on transmitter power, antenna obstructions, etc.).

Specifications :
- Display : 13mm (0.5″) LCD (Liquid Crystal Display), 8 digits.
- Measurement : Frequency, Data hold, Relative, Memory(max., min., average), Period.
- Range : 2500 MHz 50 MHz to 2500 MHz(typical max. 2600 MHz)
- 100 MHz : 5 MHz to 120 MHz.
- 10 MHz : 10 Hz to 10 MHz.
- Period : 10 Hz to 10 MHz.
- Resolution, Sample TimeRef. the following “Table for Resolution & Sample Time”.
- Sensitivity (rms) : 2500 MHz 50 MHz – 75 MHz 100 mV
- range 76 MHz – 2500 MHz 50 mV
- 100 MHz 5 MHz- 100 MHz 50 mV
- range > 100MHz to 120MHz 100 mV
- 10 MHz 50 mV
- Period 50 mV
- Frequency Accuracy : ± (4 PPM +1 d) – 23± 5 , after calibration. ℃
- Time Base circuit : 4.194 MHz quartz crystal.
- Time Base Temp. Coeffic : 0.1 PPM/per (typical, 23± 5 )
- Over-input : 2500 MHz & 100 MHz range Max. 5V peak to peak.
- 10 MHz & Period range Max. 250 V peak to peak.
- Input Connector : BNC, female.
- Case : Durable & strong ABS-plastic housing.
- Operating Temperature : 0 to 50 ℃ (32 to 122 ℉ ).
- Operating Humidity : Less than 80% RH
- Power Supply : 4 x 1.5 V AA(UM-3) battery.
- Power Consumption : 2500 MHz & 500 MHz range Approx. DC 105 mA.
- 10 MHz & Period range Approx. DC 45 mA.
- AC Adapter Power Input : Optional, 9V DC , 300 to 500 mA rating, central positive for socket.
- Power Off : Automatic power off & manual power off.
- Dimension : 173 x 80 x 35mm (6.8 x 3.1 x 1.4 inch).
- Weight : 340 g / 0.75 LB (including battery).