That 209-page Army tech manual for a T/O is something else. I'd love to know how much the government paid Zenith to develop that manual! Yikes.

I wonder what the U.S. Army used T/Os for in the 1950s (the date on the tech manual). I can only think of morale radios. If they were passed out to the troops, how many of them were ever turned back in?
Doug

:
:hi doug
:on the above link check the mil manual for r-520 then see figure 16. the notation for the switch is at the bottom of the figure "SIA BC" not sure what the SIA means.
:The set works but just barely on the upper band which is expected with the 1r5