User Manual

HR70
Digital FM Transmitter
Rolls Corporation
Salt Lake City, UT
2/20
www.rolls.com
Multi path reections
FM waves, like light waves, travel in a straight direction unless reected
o objects in their path. Because of this, two sets of waves reach your
antenna from the FM station; those that have traveled directly to the
antenna, and those that have been reected o buildings or mountains.
When the antenna receives both kinds of signals, the two interfere with
each other and result in distorted sound and poor separation. This phe-
nomenon is called "multi path reection". To reduce this problem, select
an antenna with good directivity and place it in the best location with
strong reception.
QUICK START OPERATION GUIDE
HR70
FM TRANSMITER
+
-
15 VDC
ANTENNA
FREQUENCY
DN UP
HR70
PWR
DUCK
MIC
MIC
LINE
RELEASE
TIME
MIC
AUX IN
LINE INOUTPUT
fast
slow
www.rolls.com
LEVEL
MUTE
CLIP
1 2
1 - TALK OVER OFF
2 - PHANTOM POWER
SENSITIVITY
LEVEL
ON
103.5MHz
SPECIFICATIONS
Frequency Response: 20 Hz - 12.5 kHz
Input Impedance: 100KΩ Unbalanced, 600Ω Balanced
Indicators: Power LED and Clip LED
Input/Output jacks: XLR balanced INPUT
RCA unbalanced input and output
Power: Rolls PS27s
12 - 15 VDC 500mA
5 x 1.2 mm DC Jack - Center Negative
Antenna Jack: BNC connector
Antenna Impedance: 75Ω
Current: 150 mA
Tuning Range: 87.5 - 108 MHz
Dimensions: 6.75"w x 4.25"d x 1.6"h
Weight: 1.5 lbs