Catah Posted November 13, 2017 Share Posted November 13, 2017 Ok, hopefully this is in the right part of the forum for this post. This is something that's been on my mind for a while. Originally, I always thought the AIM-9's growling tone was initially a low growl, which would increase frequency/pitch (but still the same growling tone) when locked to a heat signature. However once I started flying the A-10C and F-5 in DCS I noticed that it starts with the high freq/pitch growl as its idle tone and goes to a flat, much higher tone (not the growling tone) when locked. So my question is: What is the sound of the AIM-9 in real life? Are all these sounds real and change based on which aircraft it is or which variant of the AIM-9 it is? Or is one of these sounds only existing within the sim world? [sIGPIC][/sIGPIC] Link to comment Share on other sites More sharing options...
Bushmanni Posted November 14, 2017 Share Posted November 14, 2017 There's two types of seekers used in AIM-9, AM modulated (older ones) and FM (AIM-9L/M) modulated. The AM modulated seeker will get louder as the target gets closer to the center of FOV and then finally go silent with perfect lock. FM modulated will get both louder and higher pitched as the target moves closer to the FOV center. AM modulation: FM modulation: 1 DCS Finland: Suomalainen DCS yhteisö -- Finnish DCS community -------------------------------------------------- SF Squadron Link to comment Share on other sites More sharing options...
Catah Posted November 14, 2017 Author Share Posted November 14, 2017 There's two types of seekers used in AIM-9, AM modulated (older ones) and FM (AIM-9L/M) modulated. The AM modulated seeker will get louder as the target gets closer to the center of FOV and then finally go silent with perfect lock. FM modulated will get both louder and higher pitched as the target moves closer to the FOV center. AM modulation: FM modulation: Thanks! That answers my question perfectly. The videos are exactly of what I was thinking of. [sIGPIC][/sIGPIC] Link to comment Share on other sites More sharing options...
Svend_Dellepude Posted November 14, 2017 Share Posted November 14, 2017 Wouldn't the AIM-9 L/M seeker then be both AM and FM modulated? [sIGPIC][/sIGPIC] Win10 64, Asus Maximus VIII Formula, i5 6600K, Geforce 980 GTX Ti, 32 GB Ram, Samsung EVO SSD. Link to comment Share on other sites More sharing options...
Bushmanni Posted November 14, 2017 Share Posted November 14, 2017 It is but I think it's for claritys sake dubbed as FM modulated. DCS Finland: Suomalainen DCS yhteisö -- Finnish DCS community -------------------------------------------------- SF Squadron Link to comment Share on other sites More sharing options...
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