Amateur Communications Receiver Kit	Rating (1-5):
Made In: United States 1966-1970	Voltages: 105-125 VAC 50/60 Hz 50W
Coverage: Ham. See Comments	Readout: Analog Lin.
Modes: AM/LSB/USB/CW/RTTY
Circuit: Double Conversion Superheterodyne. 10 Tubes plus Semiconductors.	Physical: 14.875x6.68x13.4" 17 Lbs. 377x169x340mm 7.7 kg
Circuit Complement: 6CB6 Master Osc, 6BZ6 RF Amp, 6AU6 Crystal Calibrator, 6AU6 1st Mixer, 6AU6 2nd Mixer, 6AB4 Het Oscillator, 6BA6 IF Amp, 6BA6 IF Amp, 6HF8 AF Amp, 6AS11 Product Detector/BFO, 1N191 AM Detector, (2) 1N458 AGC, (2) S187 NL and (3) 1N2079 Rectifier.
Features: • ¼" Head. Jack • S-Meter • Preselector • Standby • ANL • RF Gain • Anti-Vox • Fiduciary Adj. • AGC OFF/SLO/FST • Mute Line • LMO Jack • BFO Out Jack • HFO Jack
Accessories: SB-600 Speaker, Crystal Calibrator 100 kHz, SBA-301-2 .4 kHz CW Filter, SBA-301-1 3.75 kHz AM Filter, SBA-300-3 6M Converter, SBA-300-4 2M Converter

New Price: $260-270 Kit	Used Price: $110-170
Comments: Ranges: 3.5-4, 7-7.5, 9.5-10, 14-14.5, 15-15.5, 21-21.5, 28-28.5, 29-29.5 and 29.5-30 MHz. The SB-301 features 15-15.5 MHz and a RTTY mode position not found on the SB-300. The SB-301 matches the SB-401 transmitter.

Heathkit SB-310

Shortwave Broadcast Communications Receiver Kit	Rating (1-5):
Made In: United States 1968-1972	Voltages: 120/240 VAC 50/60 Hz 50W
Coverage: See Comments.	Readout: Analog Lin.
Modes: AM/LSB/USB/CW	Selectivity: 5/_/_ kHz -6dB.
Circuit: Double Conversion Superheterodyne. 10 Tubes plus Semiconductors.	Physical: 15x6.75x14" 17 Lbs. 380x170x350mm 8 kg
Circuit Complement: 6CB6 Master Osc, 6BZ6 RF Amp, 6AU6 Crystal Calibrator, 6AU6 1st Mixer, 6AU6 2nd Mixer, 6AB4 Het Oscillator, 6BA6 IF Amp, 6BA6 IF Amp, 6HF8 AF Amp, 6AV11 Product Detector/BFO, 1N191 AM Detector, (2) 1N458 AGC, 2S187 NL and 1N2079 Rectifier.
Features: • ¼" Head. Jack • S-Meter • ANL • Preselector • RF Gain • Mute Line • AGC SLO/SLO/FST • Fiduciary Adj.
Accessories: .4 kHz CW Filter, 2.1 kHz Deluxe SSB Filter, 2.1 kHz SSB Filter, SB-600 Speaker
New Price: $259-268 Kit	Used Price: $200-250
Comments: This is the shortwave listener's version of the SB-300. Dial accuracy is rated at ±400 Hz. Ranges: 3.5-4, 5.7-6.2, 7-7.5, 9.5-10, 11.5-12, 14-14.5, 15-15.5, 17.5-18 and 26.9-27.4 MHz. Note the lack of coverage of the 21 MHz band. Heathkit eventually remedied this with a retrofit kit that swapped the coverage of CB for the 13 meter band.