1. Vector network analyzer, HP 8753B, up to 3 GHz. 2. Digital oscilloscope, HP 54120B, up to 3 GHz. 3. Pulse generator, HP 8133A, up to 3 GHz. 4. Impedance analyzer, HP 4192A, up to 13 MHz. 5. Signal generator, Wavetek 22, up to 11 MHz. 6. Programmable current source, Keithley 220, up to 100 mA. 7. DC current source, Keithley 225, up to 100 mA. 8. DC power source, Kepco, 80 V/15 A. 9. Dual DC power supply, Topward Electronics, 30 V/2 A. 10. Triple DC power supply, Philips PE 1514, 20 V/0.8 A. 11. Analog oscilloscope, Hitachi V-222, 100 MHz. 12. Lock-in amplifier, Stanford Research Systems SR 830 DSP. 13. Gaussmeter, Walker Scientific MG-50, 10G to 10kG. 14. Multimeters, Fluke 77. 15. Magnetic field sources. 16. Equipment for current annealing under tensile stress of amorphous wires.