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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 4 Port MCA204M VHF/UHF Receiver Multicoupler - 25 MHz to 1 GHz

-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
8 Port MCA208M VHF/UHF Receiver Multicoupler - 25 MHz to 1 GHz 8 Port MCA208M VHF/UHF Receiver Multicoupler - 25 MHz to 1 GHz

-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
BNC Male to N Female Connector BNC Male to N Female Connector

Connector A: BNC Male
Connector B: N Female
Brass body
Nickel plated

Our Price: $8.95
In Stock
UHF N Connector UHF Female to N Male Connector

Connector A: UHF (PL-259) Female
Connector B: N Male
Brass body
Nickel plated

Our Price: $8.95
In Stock
BNC UHF Connector BNC Male to UHF Female Connector

Connector A: BNC Male
Connector B: UHF (PL-259) Male
Brass body
Nickel plated

Our Price: $8.95
In Stock
SMA Male to BNC Female Adapter SMA Male to BNC Female Adapter

Connector A: SMA Male
Connector B: BNC Female
Brass body
Nickel plated

Our Price: $8.95
In Stock
ATT-20 Variable Attenuator ATT-20 Variable Attenuator

Variable attenuator, 1-20dB, 0, 101000 MHz, for scanners, BNC connectors

MSRP: $59.95
Our Price: $49.95
You Save: $10.00
In Stock
BPF-AIR Air Band Band Pass Filter BPF-AIR Air Band Band Pass Filter

Air-Band-Pass Filter, 112-140 MHz, for scanners, BNC connectors

MSRP: $59.95
Our Price: $49.95
You Save: $10.00
In Stock
BPF-1632 Shortwave Band Pass Filter BPF-1632 Shortwave Band Pass Filter

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
In Stock
HPN-30118 Combined Notch Filter HPN-30118 Combined Notch Filter

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
In Stock
SP-1300 Combiner/Splitter SP-1300 Combiner/Splitter

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
In Stock
BPF-VHF Band Pass Filter BPF-VHF Band Pass Filter

VHF Band Pass Filter, 137-174 MHz, for scanners, BNC connectors

MSRP: $59.95
Our Price: $49.95
You Save: $10.00
Out of Stock
LNA-2000-B Pre-Amplifier LNA-2000-B Pre-Amplifier

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 LNA-AIR Pre-Amplifier

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 LNA-AIR-B Pre-Amplifier

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
In Stock
LNA-VHF-B Pre-Amplifier LNA-VHF-B Pre-Amplifier

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
BNC Male Crimp on Connector BNC Male Crimp on Connector

Fits LMR-400
Male Crimp style
50 ohm
3 piece design (connector, pin and ferrule)

Our Price: $19.95
PWR-I Power Injector PWR-I Power Injector

Power exclusively for the LNA-AIR Pre-Amplifier.

MSRP: $39.95
Our Price: $39.95
In Stock
BNC Male to BNC Female T Connector BNC Male to BNC Female T Connector

Connector A/B: BNC Female
Connector C: BNC Male
Brass body
Nickel plated

Our Price: $8.95
In Stock
BNC Female to F Male Connector BNC Female to F Male Connector

Connector A: BNC Female
Connector B: F Male
Brass body
Nickel plated

Our Price: $8.95
In Stock
BPF-VHF-PN Band Pass Filter BPF-VHF-PN Band Pass Filter

BPF-VHF-PN Band Pass Filter

Our Price: $49.95
In Stock
BPF-UHF BPF-UHF Band Pass Filter

BPF-UHF Band Pass Filter

Our Price: $69.95
In Stock
BNC Female to BNC Female Connector BNC Female to BNC Female Connector

  • Connector A: BNC Female
  • Connector B: BNC Female
  • Brass body
  • Nickel plated

Our Price: $8.95
In Stock
BNC Female to N Female Connector BNC Female to N Female Connector

  • Connector A: BNC Female
  • Connector B: N Female
  • Brass body
  • Nickel plated

Our Price: $8.95
In Stock
BNC Female to N Male Connector BNC Female to N Male Connector

  • Connector A: BNC Female
  • Connector B: N Male
  • Brass body
  • Nickel plated

Our Price: $8.95
In Stock
BNC Right-Angle Connector Male/Female BNC Right-Angle Connector Male/Female

  • Connector A: BNC Male
  • Connector B: BNC Female
  • Brass body
  • Nickel plated

Our Price: $8.95
In Stock
N Female to N Female Connector N Female to N Female Connector

  • Connector A: N Female
  • Connector B: N Female
  • Brass body
  • Nickel plated

Our Price: $8.95
In Stock
UHF Female to UHF Female UHF Female to UHF Female

  • Connector A: UHF (PL-259) Female
  • Connector B: UHF (PL-259) Female
  • Brass body
  • Nickel plated

Our Price: $8.95
In Stock
F Female to N Male Connector F Female Connectorto N Male

  • Connector A: F Female
  • Connector B: N Male
  • Brass body
  • Nickel plated

Our Price: $8.95
In Stock
N Female to SMA Male Connector N Female to SMA Male Connector

  • Connector A: N Female
  • Connector B: SMA Male
  • Brass body
  • Nickel plated

Our Price: $8.95
In Stock
UHF Female to SMA Male Connector UHF Female to SMA Male Connector

  • Connector A: UHF (PL-259) Female
  • Connector B: SMA Male
  • Brass body
  • Nickel plated (gold color)

Our Price: $10.95
In Stock
Uniden SMA to BNC Adapter Uniden Bearcat SMA Male to BNC Female Adapter

  • Connector A: SMA Male
  • Connector B: BNC Female
  • Rugged one piece connector
  • Nickel plated

Our Price: $9.99
In Stock
BNC Male to SMA Female Adapter BNC Male to SMA Female Adapter

Connector A: SMA Female
Connector B: BNC Male
Brass body
Nickel plated

Our Price: $8.95
In Stock
4 Port MCA804/BN 800 MHz Receiver Multicoupler - 820 MHz to 890 MHz 4 Port MCA804/BN 800 MHz Receiver Multicoupler - 820 MHz to 890 MHz

-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 4 Port MCA704/BN 700 MHz Receiver Multicoupler

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 F Female to BNC Male Connector

  • Connector A: BNC Male
  • Connector B: F Female
  • Brass body
  • Nickel plated

Our Price: $8.95
In Stock
BPF 453-465 BPF 453-465 Band Pass Filter

BPF 453-465 Band Pass Filter

Our Price: $99.95
In Stock
BPF 453-485 BPF 453-485 Band Pass Filter

BPF 453-485 Band Pass Filter

Our Price: $99.95
In Stock
EMR Band pass filter EMR Band pass filter

Covers the Entire 806-894 MHz Band

Our Price: $695.00
Sale Price: $625.50
You Save: $69.50
Out of Stock
BPF-800-M BPF-800 M

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
In Stock
SMA Male to SMA Female Connector SMA Male to SMA Female Connector

  • 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
In Stock
SMA Male to SMA Female Right Angle Connector SMA Male to SMA Female Right Angle Connector

  • Connector A: SMA Male
  • Connector B: SMA Female
  • Right angle
  • Brass body
  • Nickel-plated

Our Price: $8.95
In Stock
Uniden Bearcat SMA to BNC - SDS100 Uniden Bearcat SMA to BNC - SDS100

  • Connector A: SMA Male
  • Connector B: BNC Female
  • Rugged one piece connector
  • Nickel plated

Our Price: $22.99
In Stock
N Female to UHF Male N Female to UHF Male

  • Connector A: UHF (PL-259) Female
  • Connector B: UHF (PL-259) Female
  • Brass body
  • Nickel plated

Our Price: $9.95
In Stock
LPF- 485 Low Pass Filter LPF- 485 Low Pass Filter

Low Band Pass Filter, DC - 485 MHz, for scanners, BNC connectors

MSRP: $69.95
Our Price: $69.95
In Stock
LPF- 512 Low Pass Filter LPF- 512 Low Pass Filter

LPF- 512 Low Pass Filter, DC - 512 MHz, for scanners, BNC connectors

MSRP: $59.95
Our Price: $69.95
In Stock
Pre-78 Pre-Amplifier (700/800 MHz) Pre-78 Pre-Amplifier (700/800 MHz)

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 16 Port MCA216M VHF/UHF Receiver Multicoupler

MCA216M is an active multicoupler designed to distribute VHF/UHF antenna signals to sixteen (16) VHF/UHF receivers simultaneously without loss of signal

Our Price: $895.00
Out of Stock
LIM-01 RF Power Limiter - VHF/UHF LIM-01 RF Power Limiter - VHF/UHF

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
   
 
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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.