Best Ceramic Crystal Oscillator

CW QRP Shortwave Radio Kit - CW Transceiver Shortwave Radio Kit

The patch device of the main control board has been pre welded and connected to the base plate in the form of stamp hole. The single chip microcomputer adopts pic16f1938, builtin PLL local oscillator, supports crystal oscillator calibration setting, and has its own frequency indication circuit (Seven Segment LED nixie tube is used, the display unit is 1kHz, the photo has color difference, and the actual color is red. The working frequency covers 7.000-7.100mhz, 1kHz or 100Hz steps )..
Ta2003 mixer is used for reception, and crystal filter is used for if. After ta2003 multiplication detection, the sound size is adjusted by digital potentiometer and sent to audio active filter circuit. Finally, LM386 drives speaker, and if frequency supports calibration setting..
Use 3 bs170 parallel outputs, class E amplification, 12V power supply, output power 5W! Relay switching is used for transceiver, with the function of transmitting delay adjustment to avoid frequent relay switching and improve the isolation of transceiver channel..
It has the function of automatically sending call signs, which is very convenient to use. The MCU uses the original code of our store, which can adjust the code speed, sidetone frequency and sidetone size. It can input the call sign by ....

Product Type: Crystal Oscillator Frequency Counter.
Crystal Test Range: about 4MHz-48MHz(not include 32.768KHZ).
PCB Size: 80*53*2mm. Net weight : about 39g.
Package Include: 1 set Frequency Counter Tester Parts( Attention: the products are in parts , the buyers need to assemble them).

【Package Quantity】24 Values, 960pcs (each value 40pcs), packed in a plastic storage case with compartments..
【Capacity Model】Total 24 different values, which range from 2pF to 0.1uF: 2pF, 5pF, 10pF, 22pF, 30pF, 33pF, 47pF, 68pF, 100pF(101), 220pF(221), 330pF(331), 470pF(471), 680pF(681), 1nF(102), 1.5nF(152), 2.2nF( 222), 3.3nF( 332), 4.7nF(472), 6.8nF(682), 10nF(103), 22nF( 223), 47nF(473), 68nF(683), 100nF(104)..
Material: Ceramic+ metal, Color: dark brown, Tolerance: ± 20%, Rated Voltage: 50V. Working Temperature: -20℃~ 100℃/ -4℉~ 212℉..
Applications:Excellent humidity resistance, Miniature Size, Wide Capacitance, Reliable Performance. It is widely used in Computers, Data Processing, Telecommunication, Industrial Control, etc..
A ceramic capacitor is a capacitor made of a ceramic material as a medium, coated with a metal film on the surface of the ceramic, and sintered at a high temperature. It is commonly used in high-stability oscillator circuits as loops, bypass capacitors, and pad capacitors..