- 451 EIP Microwave Frequency CounterCondition: UsedFrequency: 10 GHz
- 538B EIP Microwave Frequency CounterCondition: UsedFrequency: 26.5 GHz
- 545A EIP Microwave Frequency CounterCondition: UsedFrequency: 18 GHz
- 548A EIP Microwave Frequency CounterCondition: UsedFrequency: 26.5 GHz
- 548B EIP Microwave Frequency CounterCondition: UsedFrequency: 26.5 GHz
- 578 EIP Microwave Frequency CounterCondition: UsedFrequency: 26.5 GHz
- 585C EIP Microwave Frequency CounterCondition: UsedFrequency: 20 GHz