Your welcome James,but to be honest i suspected the superstar grant was different to the president grant which was uniden made,I believe the superstar grant is a ranger boarded radio,although i may be wrong,its one radio i always fancied along with the ranger rg99 (similar looking to the european president jackson but again ranger rci boarded,which suggests to me ranger have aquired some of the companies uniden used in the production of their radios,something i'd love to know more about as the evolution of export spec ssb radios is something that interests me)(i have asked both uniden in the usa and australia but they either deny anything to do with these radios or just won't comment,if anyone knows feel free to private message me as i find it very interesting and is only for my own personal curiosity and would never be republished),but neither were available in the uk or any of the surrounding european countries that i know of,would be nice if you could post the circuit board number and if possible pics of the inside of the radio.i may be able to shed more light on it for you if i knew which board was in it.
In all honesty James most radio users are tone death when it comes to distortion,i hear people splattering and getting good audio reports all the time,not sure if its the fact they genuinely don't hear it or just them being too polite to tell the guy his audio sucks,I on the other hand if i hear will not only tell you but also try to help you loose it and have genuinely clean audio,as its far less tiresome on the ears and believe it or not will bring you more and longer contacts,many people make excuses to go qrt rather than tell the guy his audio is a strain on them,some don't even know why its tiresome but still disappear.
I don't suppose its much different to the people who screw the volume on a hifi till the speakers are rattling but still think it sounds good,it doesn't.
If you look at your npc mod on a spectrum analyser/scope you'd be shocked just how dirty it is.no wonder when this subject rears its head no-one that does the npc mod is willing to post spectrum analyser/scope pics of it in action.Anything more than 100% modulation is distortion,you just can't escape the laws of physics.
Myself and Bob 85 have had many lengthy discussion on why people just don't hear distortion when we can,maybe its the fact we both have a heavy interest in hifi that we notice it more.