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INSTRUCTION MANUAL
AL-130R
ACTIVE LOOP ANTENNA
1912 1 E l T o ro R d
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Si l vera do, Ca lifo rni a 9 26 76
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(9 49) 459 -96 00
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co m-p o wer. com
REV112216
5.0 Using your AL-130R Loop Antenna
5.1 Field Strength Measurement Calculations
As discussed in section 4, the measured values must be corrected for preamplifier
gain and any losses incurred along the measurement path.
FIGURE 9 -
Typical measurement system for AL-130R
Let’s go through two sets of example calculations. In the first example, we will
convert an uncorrected voltage measurement into a electric field strength for
comparison to the FCC Part 15.209 limit of 30
μ
V/m (29.5 dB
μ
V/m) at 30 meters
distance. And, in the second, we will convert the same uncorrected voltage
value into a magnetic field strength for comparison to the CISPR 11 magnetic
field strength limit of 3 dB
μ
A/m at a 3-meter distance.
BATTERY LOW
CHARGING
OUTPUT 50Ω
AL-130R ACTIVE LOOP ANTENNA
9 kHz to 30 MHz
RF OUTPUT
ON/OFF
REMOTE ACCESS
POWER
REMOTE LINK
6 VDC, 500 mA
-
+
RF OUTPUT ON SATURATION
LOOP ANTENNA
AL-130R
REMOTE ACCESS
REMOTE LINK
TX
RX
RF OUTPUT
ON/OFF
BATTERY LOW
RF OUTPUT ON
SATURATION
POWER ON
RAI-100 REMOTE ANTENNA INTERFACE
