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  • Home
  • Become a Member
    • Code of Conduct
    • Member Survey
  • About
    • Leadership >
      • 2021 Leadership
    • Documents
    • SF Proclamation
  • Upcoming Events
    • 2023 SFRC Winter Field Day
    • 2023 Kaiser Half Marathon
    • Events Archive >
      • Previous Events >
        • 2022 SFRC Holiday Social
        • 2022 June Field Day
        • 2022 SF Marathon
        • 2022 Kaiser Half Marathon
        • 2021 Events
        • W6P SFRC Special Event
        • 2020 Winter Field Day
        • 2m Critical Mass
        • Boats On The Air!
        • SFRC FIELD DAY 2021!
        • 2021 SF Marathon
        • 2019 SF Marathon
        • 2019 Field Day
        • 2019 Kaiser Half Marathon
        • 2019 SOTA Activation
        • 2019 2M FM QSO Party
        • 2018 SOTA Activation
        • 2018 Holiday Party
        • 2017 Holiday Party
        • 2017 SF Marathon
        • SF Bay Half 2017
        • Field Day Photos
        • Virgin SF Bay Half Registration
        • 2016 Holiday Party
        • Brain Tumor Walk
        • 48th Campout Party
  • Press Releases
  • Club Shop
  • Meetings
    • Monthly Meetings
    • Map & Directions
    • Meetings Archive >
      • 2021 Monthly Meetings
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San Francisco Radio Club

System Fusion Tips & Hints

Analogue and Digital Harmony​
(How to block digital noise on your radio)

One of the most awesome advantages of System Fusion is that end users don't have to buy new radios. Our DR-2X repeaters allow both FM and C4FM (digital) traffic to coexist. Our repeaters are set on AUTO/AUTO mode which means 1) FM traffic in = FM traffic out, 2) Digital traffic in = Digital traffic out, 3) FM + Digital traffic in (mixed users) =  FM traffic out, everyone happy!

If you own a System Fusion capable radio then all you have to do is set it to Auto mode [visual designation is the DN symbol with a bar over it]. This allows the radio to automatically switch to the correct mode of transmission when responding to different types of received signals. 

If you own a FM only radio, then you will want to lock out digital traffic (digital noise) when only digital users are interacting with the repeater. Our repeaters are set to receive and transmit a DCS (Digital Code Squelch, otherwise known as DTCS, Digital Tone Code Squelch) code when on FM mode. If you set your radios with DCS on receive, digital noise will be blocked out! Here are instructions for some common radios:

Yaesu VX-8DR

1) Press FW
2) Press SPSSQ [Mode]
3) This gets you SQL-Type
4) Rotate dial until you see DCS
5) Press SPSSQ to save [Mode]

Kenwood TH-F6A

1) Press Tone until CT appears 
2) Press PTT
3) Press F, then DCS
4) Turn knob to select 664
5) Press MNU to store new setting

ICOM ID-51 Plus

1) Press Quick 
2) Select Tone
3) Press D middle
4) Select DTCS((.))

Baofeng UV-5R

This works in VFO (frequency) mode.  This setting
cannot be changed directly in MR (channel) mode.

1) Press Menu 
2) Type 11 to select R-DCS
3) Press Menu again
4) Press ^ (up arrow) until you get to 664
5) Press Menu again 

Yaesu FT-250R & FT-60R

1) Press [F/L] or ​[F/W]
2) Press [1 (SQ TYP)]
3) This gets you to SQL TYPE
​4) Rotate dial to DCS
5) Press PTT ​to save

Yaesu FT1DR / FT2DR

1) Press and hold DISP
2) Select or touch SIGNALING
3) Select or Scroll to SQL-TYPE
4) Set or Roll to select DCS

5) Press Display/Back 3 times to exit

Yaesu VX-6R

1) Press the F/W key
2) Press the [MODE(SP S)SQ TYP] key
3) Rotate dial to DCS
4) Press PTT to save
If your radio is not included in this page don't worry. Check out your radio's manual and focus on the DCS section, hint: it's usually grouped with TSQ or TSQL!
San Francisco Radio Club (SFRC)
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