Country of Manufacture:USA
Release dates:1956 - 1959
Speeds: 3 3/4, 7 1/2
Max Reel Size("): 7"
Number of heads: 2
Head Composition: Permalloy
Head Configuration: Mono - Full Track
Frequency Response:(all 3 dB): 7½ ips: 50Hz - 10.5kHz
Wow and Flutter:less than 0.3 % at 7½ ips
Signal-to-Noise Ratio:50 dB
Sound quality rating:5 / 10
Long-term reliability rating: 5 / 10
Towards the end of 1955 Pentron introduced a new range of two speed, half-track
mono recorders which departed from the dual transport control system of earlier models like the 9TC and HT-225. These new recorders had a single control knob for all functions and were given the names “Clipper”, “Pacemaker” and “Emperor”.
The Pacemaker T-90 was the middle of the range at $189.50. It had a ‘Unimagic’ single lever for play, record, fast forward and fast rewind plus a magic eye recording level indicator.
Rewind speed: 70 seconds for 1200 ft tape / Audio output power: 5 watts / Inputs: microphone and radio-phono-TV / Outputs: external speaker and external amplifier / Speaker(s): 6″ Alnico V woofer and 4″ tweeter / Weight: 27 lbs (12.3 kg) / half-track mono