Sony 1985
Betamax SL-HF150

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Video recording system
Rotary two-head helical scanning
Audio recording system
Beta hi-fi PAL system (2 channels)
(Recording on the conventional audio is monoaural.)
Video signal
CCIR standards, PAL colour
Aerial input
75-ohm, asymmetrical aerial socket
Channel coverage
UHF: Western European channels
E21 - E68
(Up to 12 programmes can be preset.)
RF output signal
UHF channels E30 to E39 (variable)
75 ohms, unbalanced


Horizontal resolution
260 lines
Signal to noise ratio
Colour: Better than 40dB
B/W: Better than 43dB

Beta hi fi PAL sound

Frequency response
20 Hz to 20 kHz (MPX FILTER OFF)
Wow and flutter
Less than 0.005 % WRMS
Dynamic range
More than 80 dB

Inputs and outputs

Video input
VIDEO IN: BNC connector
1.0 V (p-p)
75 ohms, unbalanced,
sync negative
Video output
VIDEO OUT: BNC connector
1.0 V (p-p)
75Ohms, unbalanced,
sync negative
Audio inputs
AUDIO IN: 2 phono jacks
47 kilohms, -10 dBs
(0 d Bs = 0.775 V rms)
Audio outputs
AUDIO OUT: 2 phono jacks
Load impedance less than 10 kilohms
-10 dBs with 47 kilohms load,
Headphones: Stereo phone jack
-26dBs, 80hms

Tape transport

Tape speed
18.73 mm/sec.
Maximum recording time
2 hours 10 min. (with Sony L-500 cassette)
3 hours 15 min. (with L-750)
Fast forward/rewind time
Within 5 min. (with L-500)


Crystal lock
Time indication
24-hour cycle
Timer setting Only for recording
2 events/week, adjustable for any day or
for all 7 days of the week or for every week
Power Backup
3 mins at any one time


Power requirements
220v AC, 50 Hz
Power consumption
Approx. 430 x 105 x 380 mm (w/h/d)
(17 x 4 1/4 x 14 1/4 inches) including
projecting parts and controls
Approx. 10.5 kg (23 lbs) net