I have a PRC47 that is un-modified. It's a fairly complete kit that I used to use on the Westcoast Military Radio Net on 3996 Khz USB. I could work from Alaska to California no problem.
I would say it is a luggable rather that portable but as grunts are cheap you could use any number
Other cold war era kit I have includes PRC320, MK123 xcvr used by MI6, MK128 xcvr used by special forces, GRC109 set, RS-6 CIA spy set & MK301 receiver.
WW2 spy kit includes Type 3 MKII (B2) suitcase set, RBZ Special receiver and a few MCR1 receivers (the Biscuit Tin radio). One MCR1 was made post war in Belgium for the stay behind groups in case the Russians didn't stop at Berlin.
All are functional and get occasional use on the air.