The Switched Crystal Calibrator is a compact and fully built crystal calibrator or marker generator that provides 1 MHz, 100 KHz, 50 KHz, or 25 KHz marks through switch-selected outputs.
It is based on a high-accuracy 1 MHz crystal oscillator with a 5 ppm accuracy rate that provides three output frequencies as square waves.
Additionally, the calibrator features a variable output potentiom…

The Precision Frequency Marker Set is a versatile addition to any ham radio enthusiast's gear.
This modern take on the classic marker generator offers three pin-selectable output frequencies of 100 KHz, 50 KHz, and 25 KHz.
It is built around a 1 MHz crystal oscillator that is divided to provide these precise square wave frequencies. The set comes in a durable laser-cut acrylic case with a…

The SecureTrack AM Label System is an effective EAS and tag-based system that offers reliable protection for your merchandise.
With a frequency of 58 Khz, these AM barcode labels are compatible with all 58Khz systems and deactivators, including Sensormatic.
Measuring 1.78" x 0.42" x 0.074" (approx.), these labels are small enough to be inconspicuous yet powerful enough to provide detectio…