1960s Type 1602-B General Radio Company UHF Admittance Meter

This strange looking instrument is a 1960s Type 1602-B General Radio Company UHF Admittance Meter Serial Number: 4221.

It is supplied unboxed and without any additional accessories. It has not been tested.

Approximate Size: 

• Base Width: 9 cm 
• Base Depth: 13.4 cm
• Max. Depth: 14cm 
• Max. Height: 17.5cm
• Max. Diameter: 12.5cm

The following website has a copy of the manual:-

https://www.ietlabs.com/pdf/Manuals/GR/1602-B%20Admittance%20Mtr.pdf

The 1602-B was used to measure admittance (0.01 to 10,000mmho) and impedance over a wide frequency range (40-1.5GHz) in TV antennas and transmission lines. As a null instrument it also measured the conductance and susceptance (+/- 200 mmho) of an unknown circuit directly. 

Please click on the following link for more vintage radio testing equipment.