It depends if you run
ssb or am alot...i ran a mk3a for years,and ran maily ssb 99% of the time.Its fun,its a realy great talker on am,and there isnt a better reciever than the mk3a or the B...some will say there isnt a diffrence,but there is...like they say there isnt a diffrence in siltronics 1011d radis,there was two difrence..the mk4 is a good one also,but the mk 3 you can get any part for it...the 4 you will play hell finding some parts...at one time i had 5 brownings,from amk2 to a 4a...73 de JW