Narda Broadband Isotropic Radiation Monitor
I purchased this unit a while back from the US Gov’t and don’t know the history, but assume all components are in working condition. Upon examination, the items offered are in good physical condition. When the instrument was powered up with a probe attached, it appeared to function. I have no way to further test the unit. This unit and components are being sold “as-is”.
Meter Specs
Dynamic Range: 30 dB
Power or Field Strength Reading Ranges: See probe chart below
Meter Scales: Linear, Marked 0-2 and 0-10
Sensitivity Ranges: Three, selected by front panel switch
Zero Control: Front panel pushbutton
Response Time including Meter: 1 second (nominal) fast position / 3 second (nominal) slow position
Additional Features: Maximum Hold Method of Operation
Recorder Output: +3V nominal at full scale into minimum load of 1000W
Power Density Alarm: An adjustable audible alarm preset by panel control for a percentage of full scale
Battery Type: 25 Volt Rechargeable nickel-cadmium (no charger included)
Battery Use Time (Approx.): 40 hours; 3:1 use to charge time
| Probe Model | Frequency Range | Full Scale Ranges | Range of Measurement |
| 8652 8662B |
300kHz - 10MHz 300kHz - 1GHz |
2, 20 and 200 mW/cm² | 0.1 to 200 mW/cm² |
| 8661 | 300kHz - 1GHz | 0.2, 2 and 20 mW/cm² | 0.01 to 20 mW/cm² |
| 8631 | 10MHz - 300MHz | .2, 2 and 20 mW/cm² | 0.01 to 20 mW/cm² |
| 8633 | 1, 10 and 100 mW/cm² | 0.05 to 100 mW/cm² | |
| 8682 | 300kHz - 1.5GHz | 2, 20 and 200% ANSI RFPG | 0.02 to 200% ANSI RFPG |
| 8621D | 300MHz - 40GHz | 0.2, 2 and 20 mW/cm² | 0.1 to 20 mW/cm² |
| 8623D | 1, 10 and 100 mW/cm² | 0.05 to 100 mW/cm² |
