General Coverage Communications Receiver	Rating (1-5): HHHHH (5)
Made In: United States 1946-1948	Voltages: 105-125 VAC 50-60 Hz
Coverage: 540 - 30000 kHz	Readout: Analog
Modes: AM/(CW-SSB)	Selectivity: 6/4/2/1/.5 kHz -6dB.
Circuit: Single Conversion Superheterodyne. 18 Tubes.	Physical: 21.5x12.25x15.25" 67 Lbs.
Circuit Complement: 6K7 1st RF Amp, 6K7 2nd RF Amp, 6L7 1st Detector/Mixer, 6J7 HF Osc, 6K7 1st IF Amp, 6SK7 2nd IF Amp, 6SK7 3rd IF Amp, 6H6 2nd Detector, 6N7 NL, 6SJ7 BFO, 6SK7 AVC Amp, 6H6 AVC Rectifier, 6J5 1st AF Amp, 6F6 2nd AF Amp, 6F6 3rd AF Amp, 6F6 3rd AF Amp, 5U4G High Voltage Rectifier and 5Y3GT/G C-Bias Rectifier.
Features: • ¼" Head. Jack • S Meter • Bandspread • Speaker Terminals • Sensitivity • ANL • BFO • Phono Terminals • Standby • Dial Lamp • AVC ON/OFF • Hinged Top Cover • Carry Handles
Accessories: SC-46 Speaker
New Price: $340-385	Used Price: $200-600
Comments: .54-1.24, 1.24-2.86, 2.85-6.3, 6.3-14 and 13.4-30 MHz. Supplied with external AC power supply and interconnecting cable. The power supply is separate and is approximately 13.6x7.62x8.62" 28 Lbs. For battery operation use: quantity five 45V "B", one "A" and one "C". Requires a speaker.
Variants: Model SPR-400-X is a rack version. Model SP-400-SX covers: 1.25-40 MHz $399.
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Hammarlund SP-600-JX

General Coverage Communications Receiver	Rating (1-5): HHHHH (5)
Made In: United States 1951-1972	Voltages: 95/105/117/130/210/234/260 VAC 130 W 50-60 Hz
Coverage: 540 - 54000 kHz	Readout: Analog
Modes: AM/CW	Selectivity: 13/8/3/1.3/.5/.2 kHz -6dB.
Circuit: Dual Conversion Superheterodyne. 20 Tubes.	Physical:21.5x12.75x17.25" 87 Lbs.
Circuit Complement: (2) 6BA6 RF Amp, 6AC7 FFO, 6C4 VFO, (2) 6BE6 Mixer, 6BA6 Gate, 6C4 FFO, (2) 6BA6 IF Amp, 6BA6 Driver, 6BA6 Buffer, 6C4 BFO, 6AL5 Detector/AVC, 6AL5 Lim/Meter, 12AU7 IF Out/AF Amp, 6V6GT Output, 0A2 Regulator, 5R4GY Rectifier and 6AL5 Rectifier Single conv. under 7.4 MHz. Four IF and two RF stages.
Features: •¼" Head. Jack • S/AF Meter • IF Output Jack • AVC ON/MAN • Standby • Tune Lock • 6 Fixed Positions • Xtal Fine Tune ±3 kHz • BFO ±3 kHz • Internal P.S. • Flywheel Tuning • RF Gain • ANL
Accessories: SP-300 Speaker, SPC-10 SSB Converter
New Price: $985-1140	Used Price: $250-650
Comments: Ranges: .54-1.35, 1.35-3.45, 3.45-7.4, 7.4-14.8, 14.8-29.7 and 29.7-54 MHz. Built-in power supply. The single knob tuning is also geared to the logging scale. This extraordinary receiver had a long and illustrious career.

Variants: SP-600-J has no fixed positions. SP-600-JLX-2,15, 23 cover .1-.4, 1.35-29.7 MHz. SP-600-JX-17, 30 are diversity. SP-600-VLF-31, 38 is only 10-540 kHz. SP-600-JX-21A has 22 tubes, SSB. SP-600-JLX-27 covers .2-.4, .54-29.7 MHz. SP-600-JX-28 is R-620. SP-600-JX-6 is R-274B. SP-600-JX-12 is R-274A. SP-600-JX-29 for CIA. SP-600-JX-39 for FAA. Please see Shortwave Receivers Past & Present - Chapter 107 Additional Information for a complete list of variants.
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