Yaesu System Fusion
Dual mode (digital/analog) repeater
Currently off-line for upgrade. See the repeater history below.
442.725 MHz 25kHz channel Offset +5.0 MHz
Analog FM (16K0F3E) DCS code 172 (Rx/Tx)
Digital C4FM (9K36F7W) (no code required)

See WA7RO Amateur Radio Operations Group for general information about the club's operations.

If you use our repeater, we ask that you adhere to the following:


The repeater coverage area (map courtesy of Radio Mobile Online from VE2DBE) includes Mill Creek, Silver Firs, Everett, Snohomish, and the Snohomish valley (hwys 9 & 2).

Repeater       Coverage map detail: 15 mi 30 mi 60 mi 120 mi None

WR7DS repeater history:

The Icom D-STAR ID-RP2000V, ID-RP4000V, & ID-RP2D repeater modules, and ID-RP2C repeater controller, were ordered.
The Icom D-STAR 2m & 70cm repeater modules & controller were received.
The Icom D-STAR 2m & 70cm repeater modules were placed on the air as WA7RO, on 145.13MHz and 440.350MHz.
Sequential callsign KE7MCH was obtained for D-STAR repeater operations, since the D-STAR US-Trust repeater system requires a unique & non-user (eg, club) callsign. This freed up callsign WA7RO for use by normal (eg, non-repeater) D-STAR radios.
Vanity callsign WR7DS (Western Washington Repeater – D-STAR) replaced sequential callsign KE7MCH.
Due to the rigidity of the design and implementation of the Icom D-STAR gateway software at that time, the entire D-STAR repeater stack was donated to the Federal Way Amateur Radio Club. It operates there today as WA7FW.
A Yaesu System Fusion DR-1X dual mode (C4FM and traditional FM) repeater was ordered.
The Yaesu DR-1X repeater was received. And, on the same day ...
The Yaesu DR-1X repeater was installed, configured, and placed on the air as WR7DS (Western Washington Repeater – Digital System) in Mill Creek, Washington (47°51'40.2"N, 122°11'23.4"W, 485ft), operating on 444.075MHz (offset +5.0MHz), with a CTCSS tone of 103.5Hz (for analog input and output). It's currently operating in "AMS" (ie, "Automatic Mode Select" between analog & digital) modes on input, and analog FM on output. The antenna elevation is currently 485 feet above sea level, so check the coverage area map.
In testing, we discovered that a Vancouver, BC repeater (VE7TOK) is on 444.075MHz, running 120W with (usually) no CTCSS tone squelch on the input. As a result, we have reconfigured the repeater to 442.725MHz (offset +5.0MHz), with a CTCSS tone of 100.0Hz (for analog input and output).
Now that it appears that operation on 442.725MHz is not causing or receiving interference, we did a better job of tuning the duplexer. This has improved the effective receiver sensitivity by about 11dB, and the effective transmitter power by about 1dB. This should more than double the radius of the effective coverage area, particularly for low-power/handheld communications.
Now that we have a YSF handheld transceiver and can remotely monitor digital output, we've changed the repeater Tx mode from FM (analog) to "AMS" (analog & digital).
We've removed the antenna selection switches and cables that we used for initial deployment. This has slightly increased the effective coverage area.
We've decided to try using DCS (code 125-NN) instead of CTCSS for access control. This will eliminate the "squelch tail" being heard from the repeater, which it currently does not suppress when using CTCSS. All modern FM transceivers support both CTCSS and DCS (sometimes called DTCS).
The repeater is now officially coordinated by the Western Washington Amateur Relay Assocation.
We've switched the DCS code to 172 for consistency with the future Snohomish ACS repeater plans.
We've returned the repeater to Yaesu for a hardware/firmware upgrade to provide for FM-narrowband operation. Our best estimate of being back on-the-air is early June. At or after that time, we may switch the repeater to exclusively narrowband operation. Since that switch also affects the System Fusion digital (C4FM) mode bandwidth, that may make the resultant digital mode operation incompatible with some or all Yaesu user radios, leaving the repeater as effectively an FM-only (analog) repeater.

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