|
Value |
Steve's Comments |
| Frequency (Wavelength) | Four bands around 3 GHz (10 cm) | Given Varian's invention of the magnetron was only a
few years earlier, this itself was an accomplishment. Earlier searchlight radars (such as the SCR-268) only worked around 200 MHz! |
| Magnetron | 2J32 | |
| Peak Power Output | 250 kW | |
| Pulse Width | 0.8 microsecond | Nice range resolution comes from the short pulse width.
Remeber, this was formed entirely by giving the magnetron just the right amount of energy. No fancy digital switching here! |
| Pulse Repetition Frequency | 1707 pulses per second | |
| Antenna Diameter | 6 feet | |
| Beam width to half power | 4 degrees | |
| Maximum Range | ||
| PPI Search | 70000 yards (39.7 statute miles) | |
| Auto-Track | 32000 yards (18.2 statute miles) | |
| Potentiometer Data (artillery control) | 28000 yards (15.9 statute miles) | |
| Minimum Range | 500 - 1000 yards | Controlled, no doubt, by the ability of the T/R network to
de-ionize quickly enough after transmit. |
| Lower Elevation Limit | -175 mils (-9.8 degrees) | It's always interesting to me to see this unit, the mil. Too
bad it isn't
used much anymore; 6400 mils to the circle seems more natural to me than 360 degrees. At least the former is related to a power of 2. |
| Upper Elevation Limit | +1580 mils (+88.9 degrees) | |
| Azimuth Coverage | 360 degrees | |
| Azimuthal scan rate in search mode | 5 revolutions per minute | |
| Range Error | 25 yards | |
| Azimuth Error | 1 mil (0.06 degree) | |
| Elevation Accuracy | 1 mil (0.06 degree) | |
| Power Requirements | 115 V 400 Hz 3 phase 10 kVA maximum (without IFF) | I think later SCR-584's were retrofitted for 60 Hz power. |