Manufacturer	Model	Condition	Description	Specs
Converters
Agilent	11793A	3rd party pre-owned	Microwave Converter	11793A
Holt Instruments	MODEL 12	3rd party pre-owned	Not-on-file(other-mfr)	MODEL 12
Tektronix	VX4240	3rd party pre-owned	Not-on-file(other-mfr)	VX4240

Converters by different manufacturers: