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• Information about EchoLink and IRLP on W6CX

• Mount Diablo Amateur Radio Club Repeater Operation Rules

W6CX and Northern California 440 Repeater Restrictions

The power output on our 70cm (440) repeater has been reduced by 50dB due to a request from the US Air Force. This change is necessary to mitigate the interference issue affecting the PAVE PAWS radar (PPR) system operating in the 70cm band. This has resulted in the following changes to our repeater system:

• 440 and 220 are now permanently linked.

• The Morning nets that were run on 220 linked to 440 are now run on 220 linked to 2m.

• EchoLink and IRLP are both now accessible only from 2m.

• The Thursday evening net will be conducted on 2m linked to 220 and 440.

• The ATV output has been moved from 427.25 MHz AM to 1244.50 MHz Digital.

This is an issue that affects all Northern California 440 repeaters. Read more here:

The latest round of ARRL Communications to 440 UHF Repeater Owners in Northern California

W6CX Voice Repeaters

147.060 MHz + / PL 100 Hz - EchoLink: W6CX-R /133896, IRLP: 3057

Radios receive on 147.060 MHz where the repeater transmits or outputs.

Positive transmitter offset of +600 kHz means 147.660 MHz.

Most radios recognize this transmitter offset.

Radios transmit at 147.660 MHz where the repeater listens or inputs.

Radios can listen to the repeater input for weak and/or local signals.

Private Line (PL) or Continuous Tone-Coded Squelch Systems (CTCSS)

is a subaudible tone at 100 Hz sent by your radio to

verify to the repeater you are transmitting and not a spurious emission.

Users may use the output frequency of a disabled repeater to continue their conversation.

80 watts output.

224.780 MHz  -1.6 MHz, split / PL 77 Hz

Negative transmitter offset of -1.6 MHz means 223.180 MHz.

PL is a sub-audible tone at 77 Hz.

Users may use the output frequency of a disabled repeater to continue their conversation.

441.325 MHz + / PL 100 Hz

Positive transmitter offset of +5 MHz means 446.325 MHz.

PL is a sub-audible tone at 100 Hz.

Users may use the output frequency of a disabled repeater to continue their conversation.

50 milliwatts output due to USAF PAVE PAWS radar restrictions.

W6CX Amateur Television (ATV) Repeater

Inputs

430.0 MHz Digital
915.0 MHz Digital
1270.00 MHz FM
1273.0 MHz Digital
1292.50 MHz Digital

Output:

1244.50 MHz Digital

W6CX Digital Voice Repeater

145.000  DUP +   Offset 2.5  (Port C) 

Full Details – click here

W6CX DMR Repeater
Repeater Output: 144.925 MHz
Repeater Input:    147.425 MHz
Color Code: 1
Slots 1 & 2 linked

BrandMeister Dashboard for W6CX DMR

Packet / APRS

W6CX-3 Packet Node 144.39 This node is used for keyboard-to-keyboard packet and APRS (Automated Packet Reporting System). Node Name RRRG.

Repeater Malfunction Protocol

Users may use the output frequency of a disabled repeater to continue their conversation.

If there is a malfunction with any of the repeaters or nodes, please send us a short message to technical@mdarc.org. Do not assume that someone else has already notified us. We would rather have duplicate notifications than have none at all.

Please include the following information in your note:

• Your name.

• Your call sign.

• Your phone number and/or email address (preferably both). This so we can contact you, should we need additional information.

• The repeater or node with the problem, e.g., the frequency.

• A description of the problem.

Thank you for your help.