Millen #92101 Antenna Preamplifier Restoration
Millen 92101 provides impedance matching and amplification for receivers.
It covers three frequency
ranges using plug-in coils (I have two of the three); 13-15Mhz, 27-32Mhz, and 48-55Mhz.
Uses a single 6AK5 and was built in the late 40's. Heavy duty construction with 1/4" thick aluminum!
found a second one - in the box!