ANC-5
Antenna Noise
Canceller & Diversity Combiner
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FEATURES
- Cancels S-9 line noise
- Nulls strong interfering signals
- Works with any transceiver/receiver
- Makes 2 antennas into phased array
- Wipes out noise before it hits your receiver
- Reduces interference generated by power lines, electric
motors, TVs & home electronics up to 40 dB
- Works for voice, data & CW
- 250 Watt rating
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The ANC-5 is an rf device that
eliminates or reduces power line noise, computer noise,
TV-generated interference, and other types of electrical
noise. The ANC-5 unit connects right to the antenna
connector of the receiver or transceiver to cancel locally
generated noise before it gets into the receiver and affects
the receiver AGC circuits. Reception of signals well below
the noise level of the local interference is possible.
To
cancel locally generated interference, the ANC-5 detects the
interfering signal and adjusts its phase and magnitude so
that it matches the offending interference at the receiver
input, but is 180 degrees out of phase, effectively
cancelling the interference. This scheme is particularly
effective at reducing local power line noise or other
locally generated noise types.
Front panel controls allow
adjustment of both the phase and magnitude of the local
interference, providing extremely deep cancellation of the
offending interference. The ANC-5 connects between the main
station antenna and the receiver antenna connector. A second
antenna connects to the ANC-5 to act as a noise pickup
antenna. A short wire antenna or a short collapsible whip is
generally satisfactory for eliminating noises generated
around the operating position or in the house, but an
external antenna usually works better to eliminate noises
generated outside the home. Any noise antenna that works,
including combinations of horizontal and vertically
polarized antennas, is satisfactory.
The ANC-5 operates as
an active antenna by using the noise antenna and the NOISE
GAIN control to amplify the antenna output. The unit can
also be used as a diversity combiner to peak weak signals or
null interfering signals. |
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ANC-5 Specifications
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Operating Frequency Range
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500 kHz to 80 MHz (usable down to 100 kHz) |
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Input Level, Main Antenna
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3Vrms maximum |
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Maximum Transmit RF Power
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250 W PEP or Average
Through Unit |
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Time to Switch to Bypass
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When 7 msec, typical
Transmit RF is Detected |
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Time to Return to Receive Mode
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Adj. from 7msec to
1.5 sec. , typical when RF is Not Present |
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Typical Local Noise Types
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Power Line Noise,
Computer Noise, TV Noise, etc. |
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Noise Cancellation
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Typically 40 dB or greater |
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Front Panel
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POWER switch, POWER LED, TX LED, PHASE RANGE
switch, NOISE PHASE control, FREQ RANGE switch,
NOISE GAIN Control. |
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Rear Panel
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Power Input, Noise Antenna Input, Main
Antenna Input, Radio Output, PTT Input, Hang Time
Adjust |
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Input Power
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+11 VDC to +16 VDC @ 110 mA, reverse
polarity protected |
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Size
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2.25"H x 6.6"W x 6.2"D (5.72cm x 16.76cm
x 15.75cm) |
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Weight
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1.35 pounds (.61 kG) |
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Temperature Ranges
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Operating: -20°C to +55°C
Storage: -40°C to +85°C |
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Humidity
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Up to 95% @ +55°C |
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Signal Loss, Main Ant. to Radio
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6dBRF |
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