Indeed , they are together for many projects , earlier rf seeker were made by ampl too , involvement of ampl in uttam is not publicized but as per their performance i think trm module can be made by them .Then hopefully it will be a better product
All the above seeker are evolutionary development , the initial model didn't get to see production due to absence of platform or not showing required performance but the new ones will go on akash missile (ng ) , astra bvr series , nirbhay (most probably x band seeker ) , ka band will go on bmd , rest will be developed and deployed as per requirement .
Fun Fact : DRDO X BAND SEEKER HAS BEEN A CATALYST IN UTTAM AND VICE VERSA , THE TRM DENSITY OF SEEKER AND UTTAM MK2 ARE EQUAL .
That's why uttam mk2 is a 978 trm aesa