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AN/APG-66
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<h2 id="capabilities">Capabilities</h2> <p>Developed from Westinghouse's WX-200 concept radar, the AN/APG-66 was designed for operation with the <a href="/facts/AIM-7_Sparrow/n44FypfL">AIM-7 Sparrow</a> and <a href="/facts/AIM-9_Sidewinder/LPm7nQTT">AIM-9 Sidewinder</a> missiles. Operation with <a href="/facts/AIM-120_AMRAAM/VghWWfM9">AIM-120 AMRAAM</a> missiles was introduced with a later variant.<a class="footnote-ref" id="fnref:2" href="#fn:2"><sup>2</sup></a><a class="footnote-ref" id="fnref:3" href="#fn:3"><sup>3</sup></a> Production of system components also involved <a href="/facts/Belgium/YKuMXP5j">Belgium</a>, <a href="/facts/Denmark/KVtykzsw">Denmark</a>, <a href="/facts/Netherlands/y8xn5stT">Netherlands</a> and <a href="/facts/Norway/wlDRKRTR">Norway</a>.<a class="footnote-ref" id="fnref:4" href="#fn:4"><sup>4</sup></a> </p><p>The system has 10 operating modes for air-to-air (search and targeting) and air-to-surface operation. Air-to-ground offers ground mapping, doppler beam-sharpening, beacon, and sea modes.<a class="footnote-ref" id="fnref:5" href="#fn:5"><sup>5</sup></a> </p><p>It has both "uplook" and "downlook" scanning capabilities. In uplook mode, the radar uses a low <a href="/facts/Pulse-Repetition_Frequency/2UlYyIPL">Pulse-Repetition Frequency</a> (PRF) for medium- and high-altitude target detection in low clutter, while downlook mode uses medium PRF for <a href="/facts/Target_detection/fH8ySeJd">target detection</a> in heavy clutter environments.<a class="footnote-ref" id="fnref:6" href="#fn:6"><sup>6</sup></a> In operation, it also has jamming resistant frequency agility.<a class="footnote-ref" id="fnref:7" href="#fn:7"><sup>7</sup></a> </p> <h2 id="composition">Composition</h2> <p>The radar system is composed of six individual <a href="/facts/Line-replaceable_unit/PU08AARs">line-replaceable units</a> (LRUs). They consist of: </p> <ul><li><a href="/facts/Antenna_(radio)/pGlcXBvc">Antenna</a>: A mechanically scanned, slotted planar phased-array antenna with radiating horizontal slots that is 29 inches wide by 19 inches high<a class="footnote-ref" id="fnref:8" href="#fn:8"><sup>8</sup></a><a class="footnote-ref" id="fnref:9" href="#fn:9"><sup>9</sup></a></li> <li><a href="/facts/Transmitter/nFYghtKv">Transmitter</a></li> <li>Low-Power Radio Frequency (LPRF) unit, with four operating frequencies within the <a href="/facts/X-band/eMpD5T2r">X-band</a><a class="footnote-ref" id="fnref:10" href="#fn:10"><sup>10</sup></a></li> <li>Digital Signal Processor</li> <li>Radar computer</li> <li>Control panel</li></ul> <h2 id="specifications">Specifications</h2> <ul><li>Frequency: <a href="/facts/X-Band/eMpD5T2r">X-Band</a> 6.2–10.9 GHz (0.048–0.028 m)</li> <li>Search cone: 120 degrees × 120 degrees</li> <li>Azimuth angular coverage: ±10 degrees / ± 30 degrees / ± 60 degrees</li> <li>Weight: 98–135 kilograms (216–298 lb) depending on configuration</li> <li>Volume: 0.08–0.102 cubic meters (2.8–3.6 cu ft) depending on configuration</li></ul> <h2 id="variants">Variants</h2> <ul><li>AN/APG-66(V)1 – Employed in select <a href="/facts/P-3_Orion/j3qMIss7">P-3C CDU</a> aircraft in support of <a href="/facts/United_States_Coast_Guard/6d7SWTP9">United States Coast Guard</a> counter drug operations<a class="footnote-ref" id="fnref:11" href="#fn:11"><sup>11</sup></a></li> <li>AN/APG-66(T47) - Installed in <a href="/facts/U.S._Customs_and_Border_Protection/o80grAfX">U.S. Customs and Border Protection</a> <a href="/facts/Cessna_Citation_II/1fPbGgqG">Cessna OT-47B</a> aircraft<a class="footnote-ref" id="fnref:12" href="#fn:12"><sup>12</sup></a></li> <li>AN/APG-66(V)2 – Upgrade of AN/APG-66(V)1 developed for the <a href="/facts/F-16A%2fB/0KRD0Gqy">F-16A/B</a> Block 15 Mid Life Update (MLU) program. Due to clutter/jamming environment enhancements, detection range increased to 83 km (52 mi).<a class="footnote-ref" id="fnref:13" href="#fn:13"><sup>13</sup></a></li> <li>AN/APG-66(V)2A – AN/APG-66(V)2 with a new combined signal and data processor providing seven times the speed and 20 times the memory of the older radar computer and digital signal processor line replaceable units. Displayed resolution in ground-mapping mode quadrupled, and is reported to be close to that offered by <a href="/facts/Synthetic_aperture_radar/MJbDGvTh">SAR</a> techniques. Used for modernization of F-16A/B fleet of Belgium, Denmark, Norway, Portugal and the Netherlands in the mid-1990s.<a class="footnote-ref" id="fnref:14" href="#fn:14"><sup>14</sup></a></li> <li>AN/APG-66(V)3 – APG-66(V)2 but with <a href="/facts/Continuous_wave_radar/CmP8HbzA">CW</a> illumination capability, export to Taiwan.<a class="footnote-ref" id="fnref:15" href="#fn:15"><sup>15</sup></a></li> <li>AN/APG-66H – Installed on <a href="/facts/British_Aerospace_Hawk_200/ay0BdVQl">British Aerospace Hawk 200</a> aircraft, smaller antenna and new signal data processor.<a class="footnote-ref" id="fnref:16" href="#fn:16"><sup>16</sup></a></li> <li>AN/APG-66NT – Installed on US Navy <a href="/facts/T-39N/zatuu6K2">T-39N</a> aircraft for instruction of Student <a href="/facts/Naval_Flight_Officer/lpx2foff">Naval Flight Officers</a>.</li> <li>AN/APG-66NZ – Installed under <a href="/facts/Project_KAHU/zQtH1GRR">Project KAHU</a> on the <a href="/facts/New_Zealand/4mpSlJdg">New Zealand</a> <a href="/facts/A-4_Skyhawk/gnEDIftA">A-4 Skyhawk</a> aircraft.<a class="footnote-ref" id="fnref:17" href="#fn:17"><sup>17</sup></a></li> <li>AN/APG-66SR - Extended range radar with a larger aperture antenna<a class="footnote-ref" id="fnref:18" href="#fn:18"><sup>18</sup></a></li> <li>AN/APG-66T – Multi-target <a href="/facts/Track_while_scan/tqSLII2H">track while scan</a> variant.<a class="footnote-ref" id="fnref:19" href="#fn:19"><sup>19</sup></a></li></ul> <h2 id="see-also">See also</h2> Wikimedia Commons has media related to AN/APG-66. <ul> <li>Electronics portal</li><li>Aviation portal</li></ul> <ul><li><a href="/facts/List_of_radars/LT5VMhpy">List of radars</a></li> <li><a href="/facts/List_of_military_electronics_of_the_United_States/xD9ktU3e">List of military electronics of the United States</a></li></ul> <h2 id="references">References</h2> <ol> <li id="fn:1"><p>Wolff, Christian, "AN/APG-66", RadarTutorial.eu, retrieved 9 August 2024 <a href="https://www.radartutorial.eu/19.kartei/08.airborne/karte015.en.html" target="_blank">https://www.radartutorial.eu/19.kartei/08.airborne/karte015.en.html</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> <li id="fn:2"><p>Wolff, Christian, "AN/APG-66", RadarTutorial.eu, retrieved 9 August 2024 <a href="https://www.radartutorial.eu/19.kartei/08.airborne/karte015.en.html" target="_blank">https://www.radartutorial.eu/19.kartei/08.airborne/karte015.en.html</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li> <li id="fn:3"><p>Info About the F - 16 "Fighting Falcon"... Volume - 3..., retrieved 9 August 2024 <a href="https://web.deu.edu.tr/atiksu/ana44/bilgi3.html" target="_blank">https://web.deu.edu.tr/atiksu/ana44/bilgi3.html</a> <a href="#fnref:3" class="footnote-back-ref">↩</a></p></li> <li id="fn:4"><p>Wolff, Christian, "AN/APG-66", RadarTutorial.eu, retrieved 9 August 2024 <a href="https://www.radartutorial.eu/19.kartei/08.airborne/karte015.en.html" target="_blank">https://www.radartutorial.eu/19.kartei/08.airborne/karte015.en.html</a> <a href="#fnref:4" class="footnote-back-ref">↩</a></p></li> <li id="fn:5"><p>Info About the F - 16 "Fighting Falcon"... Volume - 3..., retrieved 9 August 2024 <a href="https://web.deu.edu.tr/atiksu/ana44/bilgi3.html" target="_blank">https://web.deu.edu.tr/atiksu/ana44/bilgi3.html</a> <a href="#fnref:5" class="footnote-back-ref">↩</a></p></li> <li id="fn:6"><p>Info About the F - 16 "Fighting Falcon"... Volume - 3..., retrieved 9 August 2024 <a href="https://web.deu.edu.tr/atiksu/ana44/bilgi3.html" target="_blank">https://web.deu.edu.tr/atiksu/ana44/bilgi3.html</a> <a href="#fnref:6" class="footnote-back-ref">↩</a></p></li> <li id="fn:7"><p>Wolff, Christian, "AN/APG-66", RadarTutorial.eu, retrieved 9 August 2024 <a href="https://www.radartutorial.eu/19.kartei/08.airborne/karte015.en.html" target="_blank">https://www.radartutorial.eu/19.kartei/08.airborne/karte015.en.html</a> <a href="#fnref:7" class="footnote-back-ref">↩</a></p></li> <li id="fn:8"><p>"AN/APG-66 radar in an F-16 fighter aircraft", Encyclopædia Britannica, retrieved 8 August 2024 <a href="https://kids.britannica.com/students/assembly/view/3341#:~:text=The%20mechanically%20scanned%20planar%20phased,inches%20(48%20cm)%20high" target="_blank">https://kids.britannica.com/students/assembly/view/3341#:~:text=The%20mechanically%20scanned%20planar%20phased,inches%20(48%20cm)%20high</a> <a href="#fnref:8" class="footnote-back-ref">↩</a></p></li> <li id="fn:9"><p>Info About the F - 16 "Fighting Falcon"... Volume - 3..., retrieved 9 August 2024 <a href="https://web.deu.edu.tr/atiksu/ana44/bilgi3.html" target="_blank">https://web.deu.edu.tr/atiksu/ana44/bilgi3.html</a> <a href="#fnref:9" class="footnote-back-ref">↩</a></p></li> <li id="fn:10"><p>Wolff, Christian, "AN/APG-66", RadarTutorial.eu, retrieved 9 August 2024 <a href="https://www.radartutorial.eu/19.kartei/08.airborne/karte015.en.html" target="_blank">https://www.radartutorial.eu/19.kartei/08.airborne/karte015.en.html</a> <a href="#fnref:10" class="footnote-back-ref">↩</a></p></li> <li id="fn:11"><p>Wolff, Christian, "AN/APG-66", RadarTutorial.eu, retrieved 9 August 2024 <a href="https://www.radartutorial.eu/19.kartei/08.airborne/karte015.en.html" target="_blank">https://www.radartutorial.eu/19.kartei/08.airborne/karte015.en.html</a> <a href="#fnref:11" class="footnote-back-ref">↩</a></p></li> <li id="fn:12"><p>Wolff, Christian, "AN/APG-66", RadarTutorial.eu, retrieved 9 August 2024 <a href="https://www.radartutorial.eu/19.kartei/08.airborne/karte015.en.html" target="_blank">https://www.radartutorial.eu/19.kartei/08.airborne/karte015.en.html</a> <a href="#fnref:12" class="footnote-back-ref">↩</a></p></li> <li id="fn:13"><p>Wolff, Christian, "AN/APG-66", RadarTutorial.eu, retrieved 9 August 2024 <a href="https://www.radartutorial.eu/19.kartei/08.airborne/karte015.en.html" target="_blank">https://www.radartutorial.eu/19.kartei/08.airborne/karte015.en.html</a> <a href="#fnref:13" class="footnote-back-ref">↩</a></p></li> <li id="fn:14"><p>Wolff, Christian, "AN/APG-66", RadarTutorial.eu, retrieved 9 August 2024 <a href="https://www.radartutorial.eu/19.kartei/08.airborne/karte015.en.html" target="_blank">https://www.radartutorial.eu/19.kartei/08.airborne/karte015.en.html</a> <a href="#fnref:14" class="footnote-back-ref">↩</a></p></li> <li id="fn:15"><p>Wolff, Christian, "AN/APG-66", RadarTutorial.eu, retrieved 9 August 2024 <a href="https://www.radartutorial.eu/19.kartei/08.airborne/karte015.en.html" target="_blank">https://www.radartutorial.eu/19.kartei/08.airborne/karte015.en.html</a> <a href="#fnref:15" class="footnote-back-ref">↩</a></p></li> <li id="fn:16"><p>Wolff, Christian, "AN/APG-66", RadarTutorial.eu, retrieved 9 August 2024 <a href="https://www.radartutorial.eu/19.kartei/08.airborne/karte015.en.html" target="_blank">https://www.radartutorial.eu/19.kartei/08.airborne/karte015.en.html</a> <a href="#fnref:16" class="footnote-back-ref">↩</a></p></li> <li id="fn:17"><p>Wolff, Christian, "AN/APG-66", RadarTutorial.eu, retrieved 9 August 2024 <a href="https://www.radartutorial.eu/19.kartei/08.airborne/karte015.en.html" target="_blank">https://www.radartutorial.eu/19.kartei/08.airborne/karte015.en.html</a> <a href="#fnref:17" class="footnote-back-ref">↩</a></p></li> <li id="fn:18"><p>Wolff, Christian, "AN/APG-66", RadarTutorial.eu, retrieved 9 August 2024 <a href="https://www.radartutorial.eu/19.kartei/08.airborne/karte015.en.html" target="_blank">https://www.radartutorial.eu/19.kartei/08.airborne/karte015.en.html</a> <a href="#fnref:18" class="footnote-back-ref">↩</a></p></li> <li id="fn:19"><p>Wolff, Christian, "AN/APG-66", RadarTutorial.eu, retrieved 9 August 2024 <a href="https://www.radartutorial.eu/19.kartei/08.airborne/karte015.en.html" target="_blank">https://www.radartutorial.eu/19.kartei/08.airborne/karte015.en.html</a> <a href="#fnref:19" class="footnote-back-ref">↩</a></p></li> </ol>