SCART ATV Group – South Coast Amateur Radio & Television

Fort Widley Repeater Help

Work in progressRefreshes every 15 seconds. Read-only status page.

Repeater access settings and future remote user functions for Fort Widley. Confirmed details are listed below; settings awaiting confirmation are clearly marked. Command examples will be added when the functions are ready.

GB3FW D-ATV Top ↑

Information · GB3FW receive / your transmit

SettingInformation
Analogue ATV input1249 MHz
Digital ATV (DATV) input1249 MHz
Receive polarisationHorizontal · Alford slot
DATV symbol rate (SR)To be confirmed
DATV receive standardTo be confirmed
DATV video decodingH.264 (MPEG-4 AVC) · planned setting; confirmation pending
Analogue input standardTo be confirmed
ATV talkback144.750 MHz NBFM · X50
Receive FEC / automatic detectionTo be confirmed
Receive constellation / modulationTo be confirmed
Additional supported video codecsTo be confirmed

Use the input frequency to transmit into GB3FW. Match the published DATV preset once symbol rate and other settings are confirmed.

Information · GB3FW transmit / your receive

SettingInformation
DATV output frequency3406 MHz
Transmit polarisationHorizontal · slotted waveguide
Broadcast standardDVB-S (TBC)
Symbol rate (SR)2 MS/s (2000 kS/s) (TBC)
Constellation / modulation typeTo be confirmed
FEC (Forward Error Correction)7/8 (TBC)
Video encodingH.262 (MPEG-2) (TBC)
Output power / ERPTo be confirmed
Audio encoding / audio settingsTo be confirmed
Video resolution720p (TBC)

The selected programme is used for both RF transmission and the BATC stream. The stream is not an off-air check of the transmitted signal.

Candidate digital output preset: symbol rate, standard, FEC, encoding and resolution remain to be confirmed for GB3FW.

Operation and reception

The fields below will be completed from GB3FW commissioning tests. Unconfirmed settings are not operating instructions.

Operating notes

ItemInformation
Receive scan / preset sequenceTo be confirmed
Expected lock and relay delayTo be confirmed
Beacon / test-card and identification scheduleTo be confirmed
Operating hours / availabilityTo be confirmed
Coverage / reception guidanceTo be confirmed
Settings last verifiedTo be confirmed

Programme source selection

ItemInformation
Available programme sourcesTo be confirmed
Source selection method / access linkTo be confirmed
Authorisation requiredTo be confirmed
Default source / timeout behaviourTo be confirmed

Browser and VLC viewing are explained below. The BATC programme stream does not confirm off-air RF reception. Source selection details will be published only after the available controls and access rules have been verified.

Streaming

Streaming Out

The GB3FW video stream is sent to the BATC Live Video Streamer.

Watch GB3FW on BATC (HTML5), or connect directly using VLC Media Player.

Web browser viewing (HTML5)

For viewing in a web browser, use the HTML5 player. The BATC link above selects HTML5 automatically. If a player choice is shown, choose HTML5. No VLC installation is required for browser viewing; use VLC with the direct stream address below.

Direct stream address

rtmp://rtmp.batc.org.uk/live/gb3fw

Desktop viewing

  1. Open VLC and choose Media → Open Network Stream → Network.
  2. Paste the address above into Please enter a network URL.
  3. Select Play. Allow a few seconds to connect and buffer.

Mobile viewing

  1. Open VLC on Android, iPhone or iPad and select Network.
  2. Choose Open Network Stream or New Stream, depending on your device and VLC version.
  3. Enter the address above, then select Open Network Stream or Play. Allow a few seconds to connect and buffer.

Save the stream as a favourite or playlist entry where supported.

Supported devices

VLC Media Player is available for Windows, macOS, Ubuntu and other Linux distributions, Apple iOS and tvOS, Android, and selected game consoles.

Troubleshooting

Check the stream address and your Internet connection.

Stop and reopen the stream. If necessary, completely close and restart VLC.

Note

The stream is not currently running.

Streaming In

Registration

To send a video stream to GB3FW, you must be a registered user and hold a valid Amateur Radio licence.

Stream key and access details

Authorised users will be issued with the required stream key and access details.

Your stream key is unique. Keep it secure: it provides access to the GB3FW streaming input.

Sending video

Use streaming software such as OBS Studio (Open Broadcaster Software).

  1. Configure OBS with the supplied GB3FW server address.
  2. Enter your valid stream key before starting the stream.

Only authorised users with a valid stream key can stream content into GB3FW.

Note

Stream In is not currently enabled.

User commands

Remote user functions are being defined. This table will explain each command, its purpose and any access requirements when available.

FunctionCommandWhat it doesAvailability
User functionsTo be definedInstructions and examples will be added after testing.Not yet available

GB7FW D-STAR Top ↑

Information · GB7FW radio settings

SettingInformation
ModeD-STAR DV · 70 cm · Module B
Repeater transmit / your receive439.6750 MHz
Repeater receive / your transmit430.6750 MHz
Duplex offsetMinus 9.000 MHz
PolarisationVertical
MY / your callsignYour own licensed callsign
UR / TO · general callCQCQCQ

Information · GB7FW callsign routing

SettingInformation
RPT1 / R1 · repeaterGB7FW B
RPT2 / R2 · gatewayGB7FW G
Module B70 cm DV repeater module
Module GGateway routing
Gateway accessSet RPT2 to GB7FW G rather than NOT USED when gateway access is required

RPT1 and RPT2 are eight-character fields: put B or G in position 8, with two spaces after GB7FW. Listen before calling and use a short identifying test transmission.

User commands

Remote user functions are being defined. This table will explain each command, its purpose and any access requirements when available.

FunctionCommandWhat it doesAvailability
User functionsTo be definedInstructions and examples will be added after testing.Not yet available

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