From the tech manual:

5.  Technical Characteristics

Type of Circuit...      Triple conversion superheterodyne on eight
                        lowest frequency bands, double conversion
                        superheterodyne on all other bands.

Frequency Range...      500 kc to 32 mc in 32 bands of 1 mc each
                        except the first band which covers 1/2 mc
                        (500 kc to 1 mc).

Types of signals...     A1-cw, A2-mcw, A3-voice, F1-FSK

Number of tubes...      25

IF Frequencies:

First variable IF
(8 lowest bands)....    9 to 18 mc.

Second variable IF
(all bands)....         2.5-2.0 mc on 0.5-1.0 mc band;
                        3 to 2 mc on all other bands.

Third IF (fixed)...     455 kc

Selectivity.....        8, 4, and 2 kc IF (nominal) bandwidths.

Type of Tuning...       Continuous; frequency read directly on
                        counter type frequency indicator.

Method of Calibration   Built-in crystal calibrator.

Calibration points...   Every 100 kc

Calibration accuracy    Within 300 cps at any frequency in 100 kc
                        range (50 kc each side of 100 kc point)
                        when calibrated at nearest 100 kc point
                        to the received signal.

Sensitivity:
   Modulated Signals    FREQ           AM Signals
                        0.5-1 mc        9 microvolts or better
                        1.0-2.0 mc      7 microvolts or better
                        2.0-32 mc       5 microvolts or better

                        (for 10 milliwatts ouptu with 10 to 1
                        signal plus noise to noise ratio and with
                        a 56 micromicro farad dummy antenna)

   CW Signals           0.5-2.0 mc      3 microvolts or better
                        2.0-32.0 mc     2 microvolts or better

                        (for 10 milliwatts ouptu with 10 to 1
                        signal plus noise to noise ratio, carrier
                        on to carrier off) and with a 56 micromicro
                        farad dummy antenna)

Audio power output
(600 ohm impedance)     200 mw (nominal)

Nominal input voltage   28 volts dc;  will operate with input of
                        25-30 volts; will operate at reduced gain
                        at input voltages lower than 25 volts dc
                        down to a minimum of 22 volts dc.

Power input...          3 amperes at 28 volts.

Antennas:               Whip...         15 feet
                        Long wire       Random length

Height                  11 1/2 inches   (29.2 cm)
Width                   11 inches       (27.9 cm)
Depth                   14 1/8 inches   (34.6 cm)
Weight                  52 pounds       23.6 kilograms