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Marine communication accessories are designed to enhance the performance, reliability, and convenience of your onboard communication system, helping you stay connected wherever your boating adventures take you. Engineered for demanding freshwater and saltwater environments, today's communication accessories include marine-grade microphones, extension cables, external speakers, mounting brackets, charging cradles, battery packs, antenna connectors, headsets, protective cases, and installation hardware built to withstand harsh marine conditions. These essential components help maximize signal quality, improve audio clarity, simplify equipment installation, and extend the life of your VHF radios, AIS systems, and other onboard communication devices. Whether you're replacing worn components, expanding your current system, or completing a new installation, the right accessories ensure dependable performance when clear communication matters most. Featuring premium products from trusted marine manufacturers, our Communication Accessories collection delivers the quality and reliability serious boaters expect. Browse our selection today and let our knowledgeable team help you choose the ideal accessories for your marine communication system.

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  • Standard Horizon SBR-23LI Li-Ion Battery Pack f/HX210 HX-40 [SBR-23LI]
    Standard Horizon

    Standard Horizon SBR-23LI Li-Ion Battery Pack f/HX210 HX-40 [SBR-23LI]

    $51.15
    $63.96
    $51.15
    SBR-23LI Li-Ion Battery Pack for HX210 & HX-40Standard Horizon SBR-23LI Li-Ion battery 7.4V/1850mAh for Standard Horizon HX-40 and HX-210 marine radio. Specifications: Type: Batteries Box Dimensions: 3"H x 4"W x 4"L WT: 0.15 lbs UPC: 788026158942
    $51.15
    $63.96
    $51.15
  • Shakespeare PL-259-58-G Gold Solder-Type Connector w/UG175 Adapter & DooDad Cable Strain Relief f/RG-58 [PL-259-58-G]
    Shakespeare

    Shakespeare PL-259-58-G Gold Solder-Type Connector w/UG175 Adapter & DooDad Cable Strain Relief f/RG-58 [PL-259-58-G]

    $19.88
    $22.73
    $19.88
    Shakespeare PL-259-58-G ConnectorShakespeare offers an extensive line of marine grade connectors and adapters for antenna installations. Our new connectors are gold-plated brass to better withstand the elements and to minimize traditional connector-borne signal loss.PL-259-58-G is a solder-type PL-259 connector with UG175 adapter and a...
    $19.88
    $22.73
    $19.88
  • Simrad VHF Mic Clip f/RS20 V20 [000-14262-001]
    Simrad

    Simrad VHF Mic Clip f/RS20 V20 [000-14262-001]

    $14.20
    $15.63
    $14.20
    VHF Mic Clip for RS20 & V20Simrad's VHF Mic Clip for RS20, V20. Specifications: Type: Parts Box Dimensions: 1"H x 2"W x 4"L WT: 0.02 lbs UPC: 9420024169421
    $14.20
    $15.63
    $14.20
  • Poly-Planar MA-1000 5" VHF Extension Speaker - Black [MA1000RB]
    Poly-Planar

    Poly-Planar MA-1000 5" VHF Extension Speaker - Black [MA1000RB]

    $4.25
    $72.41
    $4.25
    MA-1000 5" VHF Extension Speakers - BlackThis thin, dual cone waterproof communications speaker with 20 watts of power is ideal for use as a VHF remote. Designed for flush mounting.Features: Comes equipped with a mini-plug. Completely waterproof and corrosion-proof Features stainless steel grills, sturdy...
    $4.25
    $72.41
    $4.25
  • Uniden Battery Pack f/MHS75 [BBTH0927001]
    Uniden

    Uniden Battery Pack f/MHS75 [BBTH0927001]

    $51.15
    $68.22
    $51.15
    Battery Pack for MHS75Uniden marine radio battery specifically for MHS75. Specifications: Type: Batteries Box Dimensions: 1"H x 3"W x 3"L WT: 0.17 lbs UPC: 050633804506
    $51.15
    $68.22
    $51.15
  • Icom BC147SA AC Adapter f/Trickle Chargers 100-240V [BC147SA]
    Icom

    Icom BC147SA AC Adapter f/Trickle Chargers 100-240V [BC147SA]

    $38.36
    $42.64
    $38.36
    BC147SA AC Adapter for Trickle Chargers 100-240VIcom's BC147SA AC Adapter for Trickle Chargers, 100-240V, with a US-style plug. Specifications: Type: Chargers Box Dimensions: 2"H x 3"W x 4"L WT: 0.17 lbs UPC: 731797031396
    $38.36
    $42.64
    $38.36
  • Icom Li-Ion Battery f/IC-M34 IC-M36 [BP252]
    Icom

    Icom Li-Ion Battery f/IC-M34 IC-M36 [BP252]

    $109.42
    $127.49
    $109.42
    Li-Ion Battery for IC-M34 & IC-M36Specifically for Icom's IC-M34 and IC-M36 handheld VHF radios. Provides approximately 9 hours of operating time. Specifications: Type: Batteries Box Dimensions: 1"H x 3"W x 5"L WT: 0.23 lbs UPC: 731797000705
    $109.42
    $127.49
    $109.42
  • Uniden Battery Pack f/MHS335BT MHS338BT [BT338]
    Uniden

    Uniden Battery Pack f/MHS335BT MHS338BT [BT338]

    $51.15
    $68.22
    $51.15
    Battery Pack for MHS335BT & MHS338BTLi-Ion rechargeable battery pack specifically for Uniden's MHS335BT and MHS338BT.
    $51.15
    $68.22
    $51.15
  • Vesper Splitter Patch 2M Cable f/Cortex M1 to External VHF [010-13269-00]
    Vesper

    Vesper Splitter Patch 2M Cable f/Cortex M1 to External VHF [010-13269-00]

    $38.36
    $42.62
    $38.36
    Splitter Patch 2M Cable for Cortex M1 to External VHF2M RG58 Coaxial Splitter Patch Cable (BNC to PL259) to connect an external VHF radio to the Cortex M1. Specifications: Type: Cables Box Dimensions: 1"H x 6"W x 8"L WT: 0.25 lbs UPC: 0793618020330
    $38.36
    $42.62
    $38.36
  • Standard Horizon SSM-21A Speaker Mic f/HX890, HX400, HX400IS, HX380, HX40 HX210 [SSM-21A]
    Standard Horizon

    Standard Horizon SSM-21A Speaker Mic f/HX890, HX400, HX400IS, HX380, HX40 HX210 [SSM-21A]

    $102.32
    $113.70
    $102.32
    SSM-21A Speaker Mic for HX890, HX400, HX400IS, HX380, HX40 & HX210Standard Horizon SSM-21A submersible speaker microphone with heavy-duty belt clip. Compatible with Standard Horizon HX890, HX400, HX400IS, HX380, HX40, and HX210. Specifications: Type: Microphones Box Dimensions: 3"H x 5"W x 7"L WT: 0.45 lbs...
    $102.32
    $113.70
    $102.32
  • Uniden FMB323 Flush Mount f/UM725 Series [FMB323]
    Uniden

    Uniden FMB323 Flush Mount f/UM725 Series [FMB323]

    $17.04
    $18.46
    $17.04
    FMB323 Flush Mount for UM725 SeriesFlush Mount Bracket for UM725 VHF Marine Radio.Fits Models: All UM725 Models (UM725, UM725G, and UM725GBT)   Specifications: Type: Mounting Brackets Box Dimensions: 1"H x 6"W x 6"L WT: 0.15 lbs UPC: 050633502006
    $17.04
    $18.46
    $17.04
  • Uniden FMB-321 Flush Mount Kit - UM525/625/415/380 [FMB321]
    Uniden

    Uniden FMB-321 Flush Mount Kit - UM525/625/415/380 [FMB321]

    $17.04
    $18.46
    $17.04
    This mounting kit is used to flush mount the Uniden Oceanus, UM525, UM415, UM415 and UM625 VHF Radios in your console. Specifications: Type: Mounting Brackets Box Dimensions: 1"H x 2"W x 4"L WT: 0.2 lbs UPC: 050633500316 Quick Guide (pdf)
    $17.04
    $18.46
    $17.04
  • Shakespeare PL-259-8X-G Solder-Type Connector w/UG176 Adapter & DooDad&reg Cable Strain Relief f/RG-8X Coax [PL-259-8X-G]
    Shakespeare

    Shakespeare PL-259-8X-G Solder-Type Connector w/UG176 Adapter & DooDad&reg Cable Strain Relief f/RG-8X Coax [PL-259-8X-G]

    $19.88
    $22.73
    $19.88
    Shakespeare PL-259-8x-G ConnectorShakespeare offers an extensive line of marine grade connectors and adapters for antenna installations. Our new connectors are gold-plated brass to better withstand the elements and to minimize traditional connector-borne signal loss.PL-259-8x-G is a solder-type PL-259 connector with UG176 adapter and a...
    $19.88
    $22.73
    $19.88
  • Standard Horizon Replacement Mic Only f/GX2400B - Black [CS2661701]
    Standard Horizon

    Standard Horizon Replacement Mic Only f/GX2400B - Black [CS2661701]

    $51.15
    $65.31
    $51.15
    Replacement Mic Only for GX2400B - BlackReplacement Microphone only for Standard's GX2400B Black VHF/AIS Integrated GPS/AIS/NMEA 2000 with 30W Hailer.  Specifications: Type: Microphones Box Dimensions: 2"H x 5"W x 6"L WT: 0.6 lbs
    $51.15
    $65.31
    $51.15
  • Garmin Signal RM 100 Remote Station [010-02952-00]
    Garmin

    Garmin Signal RM 100 Remote Station [010-02952-00]

    $994.88
    $0.00
    $994.88
    Signal™ RM 100 Remote StationThe Signal™ RM 100 remote station lets you control your compatible VHF marine radio from a secondary helm or flybridge. Enjoy remote control access to VHF, DSC, AIS, and other Garmin Signal VHF radio functions with this premium fixed-mount remote...
    $994.88
    $0.00
    $994.88
  • Garmin Bail Mount Knobs VHF 115/215 [010-12507-01]
    Garmin

    Garmin Bail Mount Knobs VHF 115/215 [010-12507-01]

    $25.57
    $28.41
    $25.57
    Bail Mount Knobs VHF 115/215Use these two bail mount knobs - with a bail mount (sold separately) - when you secure your compatible VHF radio in place. Specifications: Type: Mounting Brackets Box Dimensions: 1"H x 2"W x 3"L WT: 0.11 lbs UPC: 753759165390
    $25.57
    $28.41
    $25.57
  • Icom External Speaker - Black [SP24]
    Icom

    Icom External Speaker - Black [SP24]

    $85.26
    $99.70
    $85.26
    External Speaker - BlackFeatures: 4x4-inch external speaker, same as supplied Input impedance: 4 ohms Max input power: 7 Watts Specifications: Type: Speakers Box Dimensions: 5"H x 6"W x 6"L WT: 0.99 lbs UPC: 731797810809
    $85.26
    $99.70
    $85.26
  • Garmin Fist Mic Hanger [010-12507-02]
    Garmin

    Garmin Fist Mic Hanger [010-12507-02]

    $19.88
    $21.31
    $19.88
    Fist Mic HangerKeep your microphone close to your compatible VHF radio. Secure your mic with the hanger; mounting hardware included.Compatible Devices: VHF 110 Marine Radio VHF 115 Marine Radio VHF 210 AIS Marine Radio VHF 210 Marine Radio VHF 215 AIS Marine Radio VHF...
    $19.88
    $21.31
    $19.88
  • Garmin Active Speaker [010-12769-00]
    Garmin

    Garmin Active Speaker [010-12769-00]

    $191.86
    $213.18
    $191.86
    Active SpeakerConnect your compatible VHF radio to a handset for on-board communication. The active speaker has a knob to adjust volume up or down as needed on the compatible handset.WARNING: This product can expose you to chemicals which are known to the State of...
    $191.86
    $213.18
    $191.86
  • Garmin Fist Microphone Extension Cable - VHF 210/210i GHS 11/11i - 10M [010-12523-03]
    Garmin

    Garmin Fist Microphone Extension Cable - VHF 210/210i GHS 11/11i - 10M [010-12523-03]

    $127.90
    $142.11
    $127.90
    Fist Microphone Extension Cable - VHF 210/210i & GHS 11/11i - 10MGive yourself a little room when using your compatible VHF radio with this 12-pin fist mic extension cable. Available in 10M (33') lengthWARNING: This product can expose you to chemicals which are known...
    $127.90
    $142.11
    $127.90