WR7DS
Dual mode (digital/analog) repeater
442.725 MHz (offset +5.0 MHz)
Analog: DCS code 172 (Rx/Tx)
Digital: 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:
- You don't have to use a phonetic alphabet, but if you do, please use only the
ITU phonetic alphabet.
This does not include (and please don't use) "kilowatt" or other "cute" phonetics!!!
Why?
Suggestions:
- You are welcome to "kerchunk" to test coverage! If you do, please mention your location (cross
streets & city); that helps us more accurately determine the effective coverage area.
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).
WR7DS repeater history:
- 2007-03-10
- The Icom D-STAR ID-RP2000V, ID-RP4000V, & ID-RP2D
repeater modules, and ID-RP2C repeater controller, were ordered.
- 2007-03-17
- The Icom D-STAR 2m & 70cm repeater modules & controller were
received.
- 2007-03-21
- The Icom D-STAR 2m & 70cm repeater modules were placed on the air as
WA7RO, on 145.13MHz and 440.350MHz.
- 2007-03-27
- 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.
- 2007-04-14
- Vanity callsign WR7DS (Western Repeater – D-STAR)
replaced sequential callsign KE7MCH.
- 2007-08-04
- 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.
- 2015-01-31
- A Yaesu System Fusion DR-1X dual mode (C4FM and traditional FM) repeater
was ordered.
- 2015-04-04
- The Yaesu DR-1X repeater was received. And, on the same day ...
- 2015-04-04
- The Yaesu DR-1X repeater was installed, configured, and placed on the air as
WR7DS (Western 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.
- 2015-04-18
- 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).
- 2015-05-30
- 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.
- 2015-06-18
- 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).
- 2015-07-01
- We've removed the antenna selection switches and cables that we used for initial
deployment. This has slightly increased the effective coverage area.
- 2015-07-30
- 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).
- 2015-09-20
- The repeater is now officially coordinated by the
Western Washington Amateur Relay Assocation.
- 2017-06-30
- We've switched the DCS code to 172 for consistency with the future
Snohomish ACS repeater plans.
For more information, contact the webmaster for this domain.
Copyright © 2004-2017[-06-30 @ 19:23 UTC] by Dean K. Gibson (3.231.166.56/1.214 on 2021-03-07 @ 08:47:20 UTC + 0). Privacy policy.