Description of the radar set, tactical-technical characteristics
Figure 1: ASR 8
|frequency:||2 700 - 2 900 MHz
|pulse repetition time (PRT):|
|pulse repetition frequency (PRF):|
|peak power:||1.4 MW|
|instrumented range:||60 NM (≙ 111 km)|
|hits per scan:|
The air traffic control radar ASR 8 is a relocatable, solid-state, all-weather radar with dual-channel, frequency diversity, remote operator controls, and a (dual-beam) tower mounted antenna. The radar provides controllers with range and azimuth of aircraft within a 60 nautical mile radius of the physical location of the antenna. Radar return information is displayed on radar indicator in the Radar Approach Control (RAPCON) facility and is used to control air traffic within assigned air space. ASR 8 used a klystron as transmitters power amplifier stage with a load of 79 kV and 40A. The two operational frequencies have a minimum separation of 60 MHz.
ASR 8 is the analog precursor to the ASR 9. It is an aging radar system that is obsolete, not logistically supported, do not provide digital inputs to new terminal automation systems, and do not provide a calibrated precipitation intensity product nor any storm motion information.
The USAF used a modified version of the ASR 8 containing as transmitters high power stage a magnetron and the necessary additions; in this system, the magnetron tuning is driven by the AFC. This version got the US-designator AN/GPN-27.