SC-1PLUS hand-held radio frequency counter is compact, truly pocket-sized, versatile test instrument
designed for measuring any digital, on/off keying or analog signal on frequencies between 30 MHz and 2.8 GHz. Supplied
as a complete with internal NiCd pack, AC wall charger and 7 section telescopic antenna.

Impedance: 50 Ohms (BNC Socket) VSWR less than 2:1
Frequency range: 30 MHz – 2.8 GHz
Sensitivity: less than 5 mV
Max. input: 15 dBm
Resolution: 10 KHz for digital Signals or On/Off Keying
1 KHz for Analog Signals
Timebase: Less than 1 PPM at room temperature
Weight: 210 g
Size: 80 mm high x 68 mm wide x 31 mm deep
Case: Stamped aluminum with black anodized finish
Battery: Internal 4 x AA 600 mAH NiCd pack
Power: 9 VDC 300 mA

Features
- 7 digit Liquid Crystal Display
- Frequency counter for digital, on/off keying and analog signals with a minimum pulse width of 250 uS.
- Ultra sensitive synchronous detector - 16 section bargraph to show RF signal strength (-35dBm to 0 dBm)
- Two range positions - the 1 GHz position for frequencies between 30 MHz and 1 GHz and the 2.8 GHz position for
frequencies between 500 MHz and 2.8 GHz.
- Squelch adjustment for input signals
- Hold switch to lock display
- Low battery indicator
- Vibrating alert
- Low power consumption (Average 5 hour battery life)
- Supplied with NiCd pack, AC wall charger and telescopic antenna (143 MHz to 460 MHz)

Controls
1. SQL Knob - This knob turns the RF counter on and tunes the squelch up or down to set the signal strength for
reception.
2. Range Switch - This should be switched to the 1 GHz position for frequencies between 30 MHz and 0.8 GHz and
switched to the 2.8 GHz position for frequencies between 500 MHz and 2.8 GHz.
3. Hold Button - This holds the current display and stops the counter from counting.
4. Calibration - The calibration adjustment opening is located on the front panel of the counter. This allows access to the
trimmer capacitor that provides about a 10 PPM adjustment range of the time base oscillator. This is not usually
necessary but to do so read a signal of a known frequency before adjusting the trimmer for correct frequency display.
If you calibrate at 4.1943 MHz or above then the counter will be more accurate