PLJ-6LED is a cost-effective six-digit LED frequency display module specially designed for HAM friends. It is mainly used for the display of frequency values of transceivers and other equipment, and can also be used for conventional frequency measurement. This module has the characteristics of small and exquisite, reliable performance, good visual effect and low cost.A 65MHz frequency counter with 's PIC16F648A as the core. , the frequency reference uses a temperature-compensated voltage-controlled crystal oscillator ( +/- 2.5 ppm -TCXO).Adopt unique gate control method and precise time algorithm (non-interrupted method). , the gate (display refresh) time is 0.1 seconds, and the frequency value is displayed in real time. Frequency measurement accuracy 10Hz/100Hz (shift right by one) is optional. , Double IF design, IF value and plus/minus mode can be preset independently without affecting each other.The display driver adopts a dedicated chip for LED display, and the digital tube has high brightness and less external interference. It adopts six-digit 0.56-inch digital tube display, and the invalid zero is automatically blanked, and the eight-level brightness is adjustable.The circuit is simple, the structure is reasonable, the double button control, the operation is simple. All settings are automatically saved and directly recalled when power on.Gate time " 0.1 secondsMeasurement channelInput Impedance: Hi-ZMeasurement range: 0.1 MHz ~ 65 MHzMeasurement accuracy: 10 HzSensitivity: better than 60mVPPIF settingIndependent dual IF design, the minimum step for IF adjustment is 100 Hz, the IF range is 0 ~ 99.9999 MHz, and the mode of plus or minus IF can be set.Frequency referenceAdopt 5032 package 13.000MHz temperature compensated voltage controlled crystal oscillator(-TCXO), frequency stability is +/- 2.5 ppm.Working voltageDC input: DC 8V~15V (with power supply reverse polarity protection) or DC 5V (hardware setting required).Working current90 mA maxDisplay digitsSix common anode LED display, up to six digits.Colour: greenMaterial: pvcSize: 8x2cmPackage Contents:1 * Frequency counter2 * Connecting wiresOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.