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Antenna accessories help you get the best possible performance from your scanner setup. Whether you're improving signal strength, reducing interference, connecting multiple radios, or adapting different antenna connections, the right accessories can make a noticeable difference in reception and reliability. Scanner Master offers trusted scanner antenna accessories including filters, multicouplers, pre-amplifiers, coax adapters, and connectors compatible with many popular scanner brands and antenna systems.

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    4 Port MCA204M VHF/UHF Receiver Multicoupler - 25 MHz to 1 GHz
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    -Broad Frequency Range
    -25 MHz Input High-Pass Filter
    -No Signal Loss to Output Ports
    -Rugged Cast Aluminum Case
    Our Price: $229.00
    Out of Stock
    ( 12 )
    8 Port MCA208M VHF/UHF Receiver Multicoupler - 25 MHz to 1 GHz
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    -Broad Frequency Range
    -25 MHz Input High-Pass Filter
    -No Signal Loss to Output Ports
    -Rugged Cast Aluminum Case
    Our Price: $369.00
    Out of Stock
    ( 3 )
    BNC Male to N Female Connector
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    Connector A: BNC Male
    Connector B: N Female
    Brass body
    Nickel plated
    Our Price: $8.95
    75 in stock!
    ( 1 )
    UHF N Connector
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    Connector A: UHF (PL-259) Female
    Connector B: N Male
    Brass body
    Nickel plated
    Our Price: $8.95
    64 in stock!
    BNC UHF Connector
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    Connector A: BNC Male
    Connector B: UHF (PL-259) Male
    Brass body
    Nickel plated
    Our Price: $8.95
    40 in stock!
    ( 1 )
    SMA Male to BNC Female Adapter
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    Connector A: SMA Male
    Connector B: BNC Female
    Brass body
    Nickel plated
    Our Price: $8.95
    18 in stock!
    ( 5 )
    ATT-20 Variable Attenuator
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    Variable attenuator, 1-20dB, 0, 101000 MHz, for scanners, BNC connectors
    MSRP: $59.95
    Our Price: $49.95
    You Save: $10.00
    8 in stock!
    ( 1 )
    BPF-AIR Air Band Band Pass Filter
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    Air-Band-Pass Filter, 112-140 MHz, for scanners, BNC connectors
    MSRP: $59.95
    Our Price: $49.95
    You Save: $10.00
    Out of Stock
    ( 1 )
    BPF-1632 Shortwave Band Pass Filter
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    Shortwave Band-Pass-Filter, 1.6-32 MHz, for scanners and other HF receivers, BNC connectors
    MSRP: $59.95
    Our Price: $49.95
    You Save: $10.00
    2 in stock!
    ( 3 )
    HPN-30118 Combined Notch Filter
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    Combined Notch Filter for FM broadcast band 87-109 MHz and High-Pass-Filter 0-20 MHz
    MSRP: $59.95
    Our Price: $49.95
    You Save: $10.00
    9 in stock!
    ( 4 )
    SP-1300 Combiner/Splitter
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    Combiner/splitter 1 antenna/2Rx or 2 antenna/1 RX, 8-1300 MHz, BNC connectors
    MSRP: $59.95
    Our Price: $49.95
    You Save: $10.00
    6 in stock!
    ( 9 )
    LNA-2000-B Pre-Amplifier
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    Low noise antenna preamp. 30-2000 MHz, F-connectors, supply voltage range 11-13V, powered via separate wire.
    MSRP: $99.95
    Our Price: $79.95
    You Save: $20.00
    Out of Stock
    LNA-AIR Pre-Amplifier
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    Tuned low noise preamp. Range 118-137 MHz, gain typ. 20dB, BNC-connectors, supply 12V via coax.
    MSRP: $99.95
    Our Price: $79.95
    You Save: $20.00
    Out of Stock
    LNA-AIR-B Pre-Amplifier
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    Tuned low noise preamp, range 118-137 MHz, gain typ. 20dB, BNC-connectors, supply 12V via separate wire.
    MSRP: $99.95
    Our Price: $79.95
    You Save: $20.00
    8 in stock!
    LNA-VHF-B Pre-Amplifier
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    Tuned low noise preamp, range 137-174 MHz, gain typ. 20dB, BNC-connectors, supply 12V via separate wire.
    MSRP: $99.95
    Our Price: $79.95
    You Save: $20.00
    Out of Stock
    ( 2 )
    BNC Male Crimp on Connector
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    Fits LMR-400
    Male Crimp style
    50 ohm
    3 piece design (connector, pin and ferrule)
    Our Price: $19.95
    Out of Stock
    ( 2 )
    PWR-I Power Injector
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    Power exclusively for the LNA-AIR Pre-Amplifier.
    MSRP: $39.95
    Our Price: $39.95
    You Save: $0.00
    5 in stock!
    BNC Male to BNC Female T Connector
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    Connector A/B: BNC Female
    Connector C: BNC Male
    Brass body
    Nickel plated
    Our Price: $8.95
    19 in stock!
    ( 2 )
    BNC Female to F Male Connector
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    Connector A: BNC Female
    Connector B: F Male
    Brass body
    Nickel plated
    Our Price: $8.95
    72 in stock!
    ( 1 )
    BPF-VHF-PN Band Pass Filter
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    BPF-VHF-PN Band Pass Filter
    Our Price: $49.95
    6 in stock!
    BPF-UHF
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    BPF-UHF Band Pass Filter
    Our Price: $69.95
    3 in stock!
    BNC Female to BNC Female Connector
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    • Connector A: BNC Female
    • Connector B: BNC Female
    • Brass body
    • Nickel plated
    Our Price: $8.95
    44 in stock!
    BNC Female to N Female Connector
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    • Connector A: BNC Female
    • Connector B: N Female
    • Brass body
    • Nickel plated
    Our Price: $8.95
    85 in stock!
    BNC Female to N Male Connector
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    • Connector A: BNC Female
    • Connector B: N Male
    • Brass body
    • Nickel plated
    Our Price: $8.95
    66 in stock!
    ( 2 )
    BNC Right-Angle Connector Male/Female
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    • Connector A: BNC Male
    • Connector B: BNC Female
    • Brass body
    • Nickel plated
    Our Price: $8.95
    3 in stock!
    ( 3 )
    N Female to N Female Connector
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    • Connector A: N Female
    • Connector B: N Female
    • Brass body
    • Nickel plated
    Our Price: $8.95
    22 in stock!
    UHF Female to UHF  Female
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    • Connector A: UHF (PL-259) Female
    • Connector B: UHF (PL-259) Female
    • Brass body
    • Nickel plated
    Our Price: $8.95
    32 in stock!
    F Female to N Male Connector
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    • Connector A: F Female
    • Connector B: N Male
    • Brass body
    • Nickel plated
    Our Price: $8.95
    90 in stock!
    N Female to SMA Male Connector
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    • Connector A: N Female
    • Connector B: SMA Male
    • Brass body
    • Nickel plated
    Our Price: $8.95
    85 in stock!
    UHF Female to SMA Male Connector
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    • Connector A: UHF (PL-259) Female
    • Connector B: SMA Male
    • Brass body
    • Nickel plated (gold color)
    Our Price: $10.95
    86 in stock!
    ( 1 )
    Uniden SMA to BNC Adapter
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    • Connector A: SMA Male
    • Connector B: BNC Female
    • Rugged one piece connector
    • Nickel plated
    Our Price: $9.99
    3 in stock!
    ( 4 )
    BNC Male to SMA Female Adapter
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    Connector A: SMA Female
    Connector B: BNC Male
    Brass body
    Nickel plated
    Our Price: $8.95
    10 in stock!
    ( 2 )
    4 Port MCA804/BN 800 MHz Receiver Multicoupler - 820 MHz to 890 MHz
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    -820 MHz to 890 MHz
    -25 MHz Input High-Pass Filter
    -No Signal Loss to Output Ports
    -Rugged Cast Aluminum Case
    Our Price: $219.95
    Out of Stock
    4 Port MCA704/BN 700 MHz Receiver Multicoupler
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    Designed to distribute antenna signals to four receivers without loss and with high isolation between ports.
    Our Price: $219.95
    Out of Stock
    F Female to BNC Male Connector
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    • Connector A: BNC Male
    • Connector B: F Female
    • Brass body
    • Nickel plated
    Our Price: $8.95
    85 in stock!
    ( 1 )
    BPF 453-465
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    BPF 453-465 Band Pass Filter
    Our Price: $99.95
    7 in stock!
    BPF 453-485
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    BPF 453-485 Band Pass Filter
    Our Price: $99.95
    6 in stock!
    EMR Band pass filter
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    Covers the Entire 806-894 MHz Band
    Our Price: $695.00
    Sale Price: $625.50
    You Save: $69.50
    1 in stock!
    BPF-800-M
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    A 769-872 MHz Public Safety Bandpass Filter helps to reduce frequency-adjacent cellular interference and thus improves, in most cases, reception of public safety communications in the 700 and 800 MHz band.
    Our Price: $129.95
    20 in stock!
    SMA Male to SMA Female Connector
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    • Allows SDS100 scanners to use most SMA antennas
    • Connector A: SMA Male
    • Connector B: SMA Female
    • Straight
    • Brass body
    • Gold-plated
    Our Price: $8.95
    52 in stock!
    ( 1 )
    SMA Male to SMA Female Right Angle Connector
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    • Connector A: SMA Male
    • Connector B: SMA Female
    • Right angle
    • Brass body
    • Nickel-plated
    Our Price: $8.95
    58 in stock!
    Uniden Bearcat SMA to BNC - SDS100
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    • Connector A: SMA Male
    • Connector B: BNC Female
    • Rugged one piece connector
    • Nickel plated
    Our Price: $22.99
    13 in stock!
    N Female to UHF Male
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    • Connector A: UHF (PL-259) Female
    • Connector B: UHF (PL-259) Female
    • Brass body
    • Nickel plated
    Our Price: $9.95
    92 in stock!
    LPF- 485 Low Pass Filter
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    Low Band Pass Filter, DC - 485 MHz, for scanners, BNC connectors
    Our Price: $69.95
    6 in stock!
    LPF- 512 Low Pass Filter
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    LPF- 512 Low Pass Filter, DC - 512 MHz, for scanners, BNC connectors
    MSRP: $59.95
    Our Price: $69.95
    You Save: -$10.00
    3 in stock!
    Pre-78 Pre-Amplifier (700/800 MHz)
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    The Pre-78 is a commercial/government grade low noise receive pre-amplifier for use in the 700/800 MHz service band.
    Our Price: $189.95
    Out of Stock
    MCA216M VHF/UHF Receiver Multicoupler
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    An active multicoupler designed to distribute VHF/UHF antenna signals to sixteen VHF/UHF receivers simultaneously without loss of signal.
    Our Price: $895.00
    Out of Stock
    LIM-01  RF Power Limiter - VHF/UHF
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    LIM-01 is a RF power protection device designed to prevent large and damaging RF power levels destroy sensitive receiving equipment such as multicouplers, pre-amplifiers and scanning receivers
    Our Price: $119.95
    Out of Stock

From simple connector adapters to advanced multicouplers and signal filters, antenna accessories are an important part of building an effective scanner system. Small upgrades can help improve weak signals, clean up interference, and make installations easier at home, in vehicles, or in larger monitoring setups.

Not sure which connector or accessory you need? Our team has years of experience helping scanner users match the correct adapters, filters, and antenna components for their specific scanner and antenna combination. Whether you're setting up a single scanner or a multi-radio monitoring station, choosing the right accessories helps maximize performance and avoid frustrating signal issues.

Frequently Asked Questions for Antenna Accessories

Q: What do scanner antenna accessories do?

A: Scanner antenna accessories help improve or customize your scanner setup. Accessories like filters, pre-amplifiers, multicouplers, and adapters can improve reception, reduce interference, connect multiple scanners, or help different antenna connections work together.

Q: What is a multicoupler used for?

A: A multicoupler allows multiple scanners or receivers to share a single antenna. This is useful for monitoring stations where several radios need access to the same antenna without significant signal loss.

Q: How do I know which connector or adapter I need?

A: Different scanners and antennas use different connector types such as BNC, SMA, N, or UHF/PL-259. The correct adapter depends on both your scanner and antenna connection type. Product descriptions usually list connector compatibility, and Scanner Master support can help if you're unsure.
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