Bird 4381 Thruline RF Directional Wattmeter, .45 - 2700 MHz
The Bird 4381 is a digital RF wattmeter for two-way communications, avionics, C³, radar and many other applications. At the push of a button, this new wattmeter can perform the following functions:
- Read incident and reflected CW and FM power in watts or dBm
- Read incident and reflected peak-envelope-power of SSB/DSB and symmetrical AM in watts
- Read incident and reflected peak pulse power as narrow as 50 micro-seconds in watts
- Calculate SWR, dB return loss, percent modulation
- Remember peak and valley readings when adjustments for maximum or minimum signal levels are made
- Over-range at least 20 percent beyond nominal full scale
| Power Range | 100mW to 10kW using Bird Plug-in Elements |
| Frequency Range | 0.45 to 2300MHz |
| Insertion VSWR | with N Connectors 1.05 max. to 1000MHz |
| Usable Over-range | to 120% of full scale (CW, PEP, SWR and Return Loss) |
| Sampling Rate | 2 to 3 readings per second |
| Display | 3½ digit, LED-strobed |
| Modulation Frequency | 50 to 10,000Hz (Audio) |
| Pulse Parameters (min.) | Pulse width 50 microsec., repetition rate 100pps and Duty Factor 1% |
| Connectors | QC Type (Female N normally supplied) |
| AC Power | 115V (with AC Adapter) |