Have the following manuals available
TM 11-826 Transmitters BC-610E,F,G,H & I less fron cover but complete.
(1952) $30.
TM 11-242 Radio Set SCR-300-A (1943) $15.
TM 11-6625-504-12 Standing Wave Ratio Indicator IM-166/URT less both
covers (1962) $15.
Prices shipped CONUS Email for more info .
Thanks Dick K9RT