Brand: National (Panasonic)
Country of Manufacture:Japan
Speeds: 1 7/8, 3 3/4
Max Reel Size("): 5"
Number of heads: 2
Head Composition: Permalloy
Head Configuration: Mono - Full Track
Frequency Response:(all 3 dB): 100Hz - 7kHz at 3¾ ips. 100Hz - 4kHz at 1 ips
Wow and Flutter:
Sound quality rating:5 / 10
Long-term reliability rating: 5 / 10
This was a versatile mono half-track recorder, fully solid state and battery operated. It could take up to 5-inch spools and had two tape speeds: 3¾ & 1 7/8 ips.
National claimed that this was the world’s first completely automatic voice-operated portable tape recorder. Not only that, but it also provided automatic slide and film synchronization, automatic threading and remote control. Power source was from 6 x 1.5 U-2 type cells
Audio output power: 500 milliwatts (700 mW max.) / Batteries: 6 x U-2 type 1.5V batteries, 9V DC power supply / Semiconductors: 9 transistors, 1 thermistor, 1 diode / Speaker: 3½-inch / Dimensions: 3¼ x 9 x 12¼” (79 x 229 x 308 mm) / Weight: 5.9 lbs (2.7 kg) / half-track mono