| Manufacturer | Model | Description | |
| Agilent Technologies |
53131A |
Universal Counter 225 MHz |
|
| Agilent Technologies |
53132A |
Frequency Counter 225MHz |
|
| Agilent Technologies |
5350B |
Frequency Counter/Oven Timebase 20GHz |
|
| Agilent Technologies |
5351B |
Frequency Counter 26.5 GHz |
|
| Anritsu |
MF2412B |
Frequency Counter 20GHz |
|
| Anritsu |
MF2414B |
Frequency Counter 40GHz |
|
| EIP |
548A |
Frequency Counter 10Hz to 26.5GHz |
|
| Fluke |
PM6681R/076 |
Rubidium Frequency Counter 300MHz |
|
| Fluke |
PM6685R |
Rubidium Frequency Counter 300MHz |
|
| IFR |
CPM46 |
Microwave Frequency/Power Meter (10MHz - 46GHz/1nW - 25W Sensor Dependent) |
|
| Racal Instruments |
1998 |
Frequency Counter/Hi Stab Reference/Reference Multiplier/GPIB 1.3GHz |
|
| Racal Instruments |
2101 |
Frequency Counter 20GHz |
|
| XL Microwave |
3200/150 |
Frequency Counter 20GHz |
|