Rolls HR78 Folheto

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   

 

 

• 18 presets, 12 FM and 6 AM

• Large LCD digital display   

 

 

 

• Output Level control

• Auto search up and down   

 

 

 

• US or International frequency centers

• RCA and 1/8" (3.5 mm) Outputs   

 

 

• FM stereo or mono operation

SPECIFICATIONS
FM 

 

 

 

 

 

                   AM

Intermediate Frequency: 

 

10.7 MHz +/- 0.3      Intermediate Frequency: 

 

450 kHz +/- 5

Tuning Range:   

 

 

87.5 - 108 MHz       Tuning Range: 

  US 

 

520 - 1710 kHz

30 dB quieting sensitivity: 

 

28 dB                                                         International    531 - 1602 kHz

IF Rejection 87.9 MHz:   

 

50 - 56 dB                20 dB quieting sensitivity:   

58 dB

Image Rejection 105.9 MHz: 

 

20 - 26 dB                IF Rejection 603 kHz: 

 

25 - 32 dB       

3dB Limiting Sensitivity:  

 

28 - 35 dB                Image Rejection 1404 kHz:   

32 - 38 dB          

THD 1 mV Input: 

 

 

0.5 - 2 %                  Auto Tuning Sensitivity 999 kHz: 

28 - 35 dB

Auto Tuning Sensitivity 97.9 MHz: 

25 - 30 dB

AM Suppression: 

 

 

26 - 32 dB

Max Output @ 1 kHz:   

 

0.5V +/- 0.05V

Supply Voltage:  

 

 

12 VDC, 200mA  

 

 

 

 

 

(Rolls Model PS27)

Dimensions: 

 

 

 

(190w x 185d x 42.5h) mm

Weight:  

 

 

 

3 lbs

ROLLS Coporation 

5968 South 350 West, Salt Lake City, UT, 84107 

(801) 263-9053  FAX (801) 263-9068

info@rolls.com • www.rolls.com