HR78 Digital AM/FM Tuner
The ROLLS HR78 is a PLL synthesized digital AM/FM tuner in a feature-packed half-rack chassis. The unit is
ideal for replacing analog tuners, and where a small digital tuner is desired. The unit ships with FM and AM
antennas, and the 1/8" output has sufficient levels to drive a pair of headphones. Up to two HR78 units may be
rack mounted in a single standard 1U rack space, the Rolls URT5 Universal Rack Tray
FEATURES:
• Retains presets when power is off
• Large LCD digital display
• 18 presets, 12 FM and 6 AM
• Output Level control
• Auto search up and down
• RCA and 1/8" (3.5 mm) Outputs
• US or International frequency centers
• FM stereo or mono operation
SPECIFICATIONS
FM
AM
Intermediate Frequency:
Tuning Range: US
International 531 - 1602 kHz
20 dB quieting sensitivity:
IF Rejection 603 kHz:
Intermediate Frequency:
Tuning Range:
10.7 MHz +/- 0.3
87.5 - 108 MHz
28 dB
50 - 56 dB
20 - 26 dB
28 - 35 dB
0.5 - 2 %
450 kHz +/- 5
520 - 1710 kHz
30 dB quieting sensitivity:
IF Rejection 87.9 MHz:
Image Rejection 105.9 MHz:
3dB Limiting Sensitivity:
THD 1 mV Input:
58 dB
25 - 32 dB
32 - 38 dB
28 - 35 dB
Image Rejection 1404 kHz:
Auto Tuning Sensitivity 999 kHz:
Auto Tuning Sensitivity 97.9 MHz:
AM Suppression:
25 - 30 dB
26 - 32 dB
Max Output @ 1 kHz:
Supply Voltage:
0.5V +/- 0.05V
12 VDC, 200mA
(Rolls Model PS27)
Dimensions:
Weight:
(190w x 185d x 42.5h) mm
3 lbs
ROLLS Coporation
5968 South 350 West, Salt Lake City, UT, 84107
(801) 263-9053 FAX (801) 263-9068
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