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National NC-270 Cosmic Blue Amateur Band Receiver 6 through 80 Meters in Excellent Cosmetic & Working Condition

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MPN:
NC-270
Shipping:
$65.00 (Fixed Shipping Cost)
  • National NC-270 Cosmic Blue Amateur Band Receiver 6 through 80 Meters in Excellent Cosmetic & Working Condition
  • National NC-270 Cosmic Blue Amateur Band Receiver 6 through 80 Meters in Excellent Cosmetic & Working Condition
  • National NC-270 Cosmic Blue Amateur Band Receiver 6 through 80 Meters in Excellent Cosmetic & Working Condition
  • National NC-270 Cosmic Blue Amateur Band Receiver 6 through 80 Meters in Excellent Cosmetic & Working Condition
  • National NC-270 Cosmic Blue Amateur Band Receiver 6 through 80 Meters in Excellent Cosmetic & Working Condition
  • National NC-270 Cosmic Blue Amateur Band Receiver 6 through 80 Meters in Excellent Cosmetic & Working Condition
  • National NC-270 Cosmic Blue Amateur Band Receiver 6 through 80 Meters in Excellent Cosmetic & Working Condition
  • National NC-270 Cosmic Blue Amateur Band Receiver 6 through 80 Meters in Excellent Cosmetic & Working Condition
  • National NC-270 Cosmic Blue Amateur Band Receiver 6 through 80 Meters in Excellent Cosmetic & Working Condition
  • National NC-270 Cosmic Blue Amateur Band Receiver 6 through 80 Meters in Excellent Cosmetic & Working Condition
  • National NC-270 Cosmic Blue Amateur Band Receiver 6 through 80 Meters in Excellent Cosmetic & Working Condition
$199.99
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Description

National NC-270 Cosmic Blue Amateur Band Receiver 6 through 80 Meters in Excellent Cosmetic & Working Condition

 This NC-270 is in beautiful cosmetic condition and worked very well on all bands when I recently tested it on the air.

 It is free from any bad marks or scratches and has only a few small marks, one on the top near the back, and two very minor mark on the swing up riser on the bottom.

 Like many of the 270s, it has a speaker added to the left side so there is no need for an external speaker.

I have compiled the following information for this very cool looking receiver.

  I will include the manual shown in the pictures.

 If the shipping price is less (close to my state) I will refund the difference.

Key Specifications and Features
  • Frequency Coverage: 80 m (3.5–4.0 MHz), 40 m (7.0–7.3 MHz), 20 m (14.0–14.4 MHz), 15 m (21.0–21.5 MHz), 10 m (28.0–29.7 MHz), and 6 m (50.0–54.0 MHz).
  • Circuit: Dual-conversion superheterodyne. First IF is 2215 kHz (crystal-controlled); second IF is 230 kHz using a patented ferrite filter for selectable bandwidths.
  • Selectivity: Five positions — 5 kHz, 3 kHz, 2.5 kHz (upper/lower sideband selectable), and 0.6 kHz (–6 dB points) via variable coupling in the ferrite filter.
  • Modes: AM, SSB (with product detector), CW (with BFO). It includes a built-in 100 kHz crystal calibrator, notch filter (T-notch), ANL (automatic noise limiter), AGC, mute/standby, antenna trimmer, and separate RF gain + audio gain controls.
  • Other Details: No built-in speaker (requires external NTS-3 or equivalent); ¼" headphone jack; large flywheel tuning dial with slide-rule scale and lateral dial-set adjustment; "flip-foot" tilt stand; perforated "Cosmic Blue" cabinet (distinctive gray-blue to darker blue finishes over the years). Uses ~9–10 tubes (e.g., 6BZ6 RF amp, 6BE6 converters, etc.). Power: 105–125 VAC, ~75–90 W draw. Dimensions roughly 15.75" W × 8.75" H × 9" D, ~28 lbs.

 

Performance notes from owners: It is sensitive and stable after warm-up with minimal drift on lower bands, good for AM and workable on SSB/CW.
 
The notch filter and selectable selectivity are useful.
 
The S-meter typically does not function on SSB/CW due to the AGC design (a known characteristic of this model, not a fault). On-air reports praise it as a solid 1960s table-top receiver for its era, though modern rigs outperform it in stability and ease of SSB use.
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