1hz-50mhz Diy Kits Crystal Oscillator Tester Frequency Counter Meter + Mini Case +usb Cable - Counters - AliExpress
TCXO Crystal Oscillators - ECS Inc.
A precisely-timed energy injection technique achieving 58/10/2μs start-up in 1.84/10/50MHz crystal oscillators | Semantic Scholar
Hack Your Crystal's Frequency | Hackaday
Crystal Ladder Filters for All
Narrow band-pass crystal ladder filters
SMD2016 SMD2.0*1.6 Surface Mount 19.2MHz 32MHz 40MHz 48MHz 50MHz 54MHz 18PF at Cut Quartz Unit Crystal Resonator - China Quartz Crystal and Quartz Resonator
GSF-75 50R9B | 50MHz 4 pole crystal filter with 9.0kHz 3dB bandwidth | Golledge
OSZI 50,000000: Crystal oscillator, 50.00 MHz at reichelt elektronik