blahdy

No, they are similar. Both use cases were developed from same logic and technology since 1960s. It kind of goes like this: Can you use a Hellfire missile to target aircraft? The technical answer is Yes; but would you actually want to? Probably not, unless you're desperate and have no other assets to deal with the air threat. You probably wouldn't want to use Hellfire to target aircraft, because the probability of kill would be much lower as the missile wasn't designed for intercepting aircraft with various technical reasons, such as -- (1) aircraft maneuvers might overrun seeker gimbal limits or TADS LOS limits for laser illumination; (2) aircraft may just fly out of Hellfire's smaller no escape zone, which with Mach 1.3 acceleration with slow impulse, is not optimized to reach high performance maneuvering aircraft; and certainly (3) if you are going to use Hellfire to knock out aircraft, you probably want to stick to LOBL. But when push comes to shove, yes you can engage aircraft, and certainly slow moving stuff with Hellfire if you had to -- the missile uses proportional navigation and when conditions are right, it can actually intercept an aircraft no problem. In real life, such incident had already happened when Israelis killed a Cessna with Hellfire in 1996. Same story with HOJ vs. ARM here. HARM is dedicated and optimized for ARM use, with reconfigurable wideband receiver to target all common acquisition & tracking radar frequency bands, increasing you the chance, aka probability of kill to go after that radar. Can you use a HARM to take out a support jammer? Technical answer is, yes you can; but it'll also depend on whether the jammer is sitting on the ground, or moving in the air. You'll note that AGM-88C Block 5 software added target tracking capability against high power jammers, intended to kill GPS jamming sources. I was responding to the original poster's question about /possibility/ of anti-RF engagement against a radio jamming source, before you suddenly jumped in to pick argument over semantics.

Jammer energy isn't "noise"; in order for jamming to overcome a radar, it has to operate in same frequency band (why do you think Aegis radar is so huge and has big range? -- no, the primary reason was never for the long detection range, the actual reason was to ensure that radar always burns thru and never gets jammed when targets are in missile employment zone). The implementation of guidance between HOJ and ARM is precisely the same in principle, the only difference is that HOJ is rather reactive to verifiable jamming frequency, where as ARM is tuned to specified hostile radar's operating frequencies. Both active radar homing missile employing phased array (i.e. AIM-120) and a typical standard modern ARM have monopulse reception capabilities to estimate LOS information from received signal timings; the only major difference being what type of frequency band you're tracking on. Once you have LOS, then it's just simple proportional navigation to guide onto the source of jammer, or source of radar emission in case of ARM.

Depends, but general answer is technically yes. Home on Jam (HOJ) mode exists for AIM-120 for example.

Hi, just got this game and I'm totally new to this :)