AN/APQ-39
Description of the radar set, tactical-technical characteristics
Figure 1: AN/APQ-39 (XA-3), left the transmitter, right the receiver
Manufacturer:General Electric
| Specifications | |
|---|---|
| frequency: | 34.5 GHz
(Ka-Band) |
| pulse repetition time (PRT): | |
| pulse repetition frequency (PRF): | 683 Hz |
| pulsewidth (τ): | 0.8 µs |
| receiving time: | |
| dead time: | |
| peak power: | 9 kW |
| average power: | 5 W |
| instrumented range: | |
| range resolution: | |
| accuracy: | |
| beamwidth: | 0.6° |
| hits per scan: | |
| antenna rotation: | |
| MTBCF: | |
| MTTR: | |
AN/APQ-39
The AN/APQ-39 was an operating in Ka-Band cloud detector radar that was used as weather & navigational radar in the Boeing B-52D Stratofortress.
The radar was developed between 1953 and 1958 as airborne radar. The test version AN/APQ-39(XA-3) was converted to separate transmit and receive antennas due to high losses in the duplexer. It continued to be operated in stationary mode until 1968.
Sources and ressorces:
- Wilk, K. E., “Evaluation of the AN/APQ-39(XA-3) cloud detector radar”, Final Report, Contract AF19(604)-1395. 39 pp. Mar.1955 - Mar.1958. (online PDF)
- Kaplan, S. M., “Development of Airborne Cloud Base and Top Indicator - AN/APQ-39”, General Electric Co., Electro Mechanical Division, Schenectady, N. Y.