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National NC-188

NC-188
General Coverage Communications Receiver Rating (1-5):
Made In: United States 1957-1960 Voltages: 105-130 VAC 50/60 Hz
Coverage: 540 - 40000 kHz Readout: Analog
Modes: AM/CW
Circuit: Single Conversion Superheterodyne. 9 Tubes. Physical: 16.82x10x10.875" 427x254x276mm
Circuit Complement: 6BA6 RF Amp, 6BE6 Mixer, 6BA6 1st IF Amp, 6BA6 2nd IF Amp, 6AL5 Detector/AGC/NL, 6C4 RF Osc, 5Y3 Rectifier, 12AT7 CW Osc/S-Meter/1st Audio Amp, 6AQ5 Audio Out Amp. Has an RF amp stage, two IF stages and two audio stages.
Features: " Head. Jack S-Meter Antenna Trimmer Bandspread Sensitivity Dial Lamp Tone HI/LO BFO Standby ANL
Accessories: NTS-1 Speaker
New Price: $140-160 Used Price: $150-260
Comments: Ranges: .54-1.6, 1.6-4.7, 4.6-15 and 14- 40 MHz. Bandspread: 3.5-4, 6.9-7.3, 14-14.35, 20.4-21.5 and 27-30 MHz. Requires a speaker. Similar to NC-109 but without the crystal filter and product detector.

National NC-190

NC-190
General Coverage Communications Receiver Rating (1-5):
Made In: United States 1961-1965 Voltages: 105-125 VAC 50-60 Hz
Coverage: 540 - 30000 kHz Readout: Analog
Modes: AM/CW/SSB Selectivity: 5/3/.6 kHz
Circuit: Double Conversion Superheterodyne. 10 Tubes. Physical: 15.75x8.75x9" 26 Lbs. 400x222x228mm 11.8 kg
Circuit Complement: 6BZ6 RF Amp, 6BE6 HF Converter, 6BE6 2nd Converter, 6BA6 IF Amp, 6BA6 IF Amp, 12AX7A Product Detector/BFO, 6T8 AM Detector/ANL/AGC/Audio Amp, 6CW5 Audio Out, 5Y3GT Rectifier and OB2 Regulator. Single conversion below 4 MHz.
Features: " Head. Jack S-Meter Antenna Trimmer Bandspread RF Gain Dial Lamp BFO Front Tilt Legs Mute Standby ANL AGC ON/OFF
Accessories: NTS-3B Speaker, XCU-109 Crystal Calibrator 1000 kHz
New Price: $200-220 Used Price: $200-300
Comments: Ranges: .54-1.6, 1.6-4, 4-10, 10-20 and 20-30 MHz. The Dial Selector knob selects either amateur or shortwave bandspread. The bandspread is on the rotary dial to the right of the main tuning dial. Amateur bands are shown in red: 3.5-4, 6.9-7.5, 13.8-14.5, 21-21.5 and 26.6-30 MHz. The shortwave broadcast bands are shown in blue: 5.9-6.3, 8.6-10, 11.7-12, 14.6-15.4, 16.4-18 and 21.5-22.1 MHz. Requires a speaker. The NC-190 has National's "cosmic" blue metal cabinet. 60 to 1 Bandspread tuning ratio.
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