Amateur Radio Relay Group, Inc.
An Oregon Non-Profit Public Service Team since 1977
Operating the K7RPT Repeater System

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Portland to Salem
Metro Area Repeaters

Sylvan Hill
147.040 + 100.0 hz 
442.225 + 100.0 hz
(linked to 444.125)

Cedar Mill
147.380 + 100.0 hz
443.750 + 100.0 hz 
(linked together fulltime)

Chehalem Ridge
444.125 + 100.0 hz
(linked to Sylvan 442.225)

444.400 + 100.0 hz
(linked South Saddle)

South Saddle Mountain
147.320 + 100.0 hz
442.325 + 100.0 hz
(linked to Skyline 444.400)

Mt. Hood
147.120 + 100.0 hz
444.225 + 100.0 hz 

Regional Repeaters

Central Oregon

Cinder Butte
Redmond / Bend

147.040 + 114.8 hz
-linked to Hood and Eagle Butte

Eagle Butte
Warm Springs
442.225 + 114.8hz
-linked to Hood and Cinder Butte

La Grande
147.260 + 103.5.0 hz

147.020  + Open


145.330 -  Open

Welcome to ARRG and the K7RPT Repeater System


This is the official site of the Amateur Radio Relay Group, Inc, otherwise known as ARRG.

 ARRG owns and operates the 17 repeaters that make up the K7RPT repeater system.


We are a technical communication team and our primary purpose is to build, install and maintain modern repeater communication systems for use by Amateur Radio Community.


ARRG also freely provides our repeater systems for the use of emergency / disaster communications teams which include State, County and City Agencies, as well as the ARES D1 group, Beaverton CERT, Search & Rescue Teams and many other public service organizations in and Oregon State and the surrounding area.


The repeater group that was to become ARRG started back in 1972 with its very first repeater on South Saddle Mountain and later became officially incorporated as ARRG by the State of Oregon in October 1977.

ARRG is one of Oregon's original Amateur Radio groups and is still one of the larger Amateur Radio teams that are active.

ARRG has been a American Radio Relay League (ARRL) affiliated group since February 1983.


ARRG, Inc. is an Oregon Non Profit Charitable Organization and we are a tax deductible 501 C 3 group.


We Still Need Your Help!

The Sylvan Hill KOIN TV transmitter tower 147.040 and 442.225 Antenna Fund drive


Thanks to all that have already donated an extra $50 here and there, we have $960 dollar already collected towards the total.


Here's the latest Thanksgiving update on the Emergency Antenna Fundraiser


Located high up on the KOIN TV transmitter tower lives the 147.040 and 442.225 repeater antennas.

Feeding those two repeater antennas are 250' runs of Andrews Heliax; the 040 machine uses a ½” run and 225 machine uses a 7/8ths run.


A few years ago the technical team began to notice some antenna system issues with both the 147.040 and 442.225 repeaters - this included high swrs and noticeable coverage problems as reported by many of you. 


During 2014, the 147.040 system was having the most trouble and showing high SWR readings - sometimes lasting many weeks, only to clear up by itself. The team is pretty sure that this is indicative of water damage and the continuing corrosion that is occurring.


As most of you are already aware, the 442.225 antenna system failed earlier in the year as well and as of Turkey day, we have been unable to afford to fix the antenna system the way it oght to be fixed.

The 442.225 has been on the air this summer ONLY because the repeater is currently operating on a borrowed UHF commercial antenna which belongs to our site host.


On Oct 9th, ARRG hired our lowest bidder to install the new antenna ARRG members recently purchased (thank you) but once up the tower, the tower company found that the new antenna could not be hooked up to the old hardline, because it was water corroded and bad.


Currently, there is a brand new 440 antenna mounted in place on the KOIN tower but without a viable way to feed it, it's being wasted and unused.



For the first time in ARRG’s 38 year history, there is a good chance that ARRG will have to pull the plug on one of the systems busiest repeaters.


We shouldn't forget that our KOIN Sylvan Hill site is one of Portland's most popular repeater systems and without the 147.040 and 442.225 system operational, the following events will be adversely affected by the situation;  Hood to Coast, Race for the Cure, Bridge Pedal and a dozen other events.  


It should be noted that even though our team initially did all the tower work at KOIN over a decade ago, no Amateur Repeater techs or climbers are allowed on any commercial broadcast towers anymore due to new commercial climbing regulations and increased insurance liability insurance.


Please realize that those that serve you on the Board and Technical Team hates to ask any of you for additional financial support without first doing all we can do to raise as much money as we could, first, before publically asking for more.


As many of you have noticed over the summer, our team has been putting in overtime in a last minute push to raise money to help cover the KOIN situation.  A small handful of your technical team worked their butts off this summer cleaning up estates, doing tower work, setting up and running swap tables at Mic & Key, Rickreall, OMSI Makers Faire and SEAPAC - all in an attempt to raise funds so we wouldn’t have to once again approach the general membership with our hands out.


Even with all these efforts, the team was only able to cover the cost of the new Telewave antenna and some of the October 9th install bill. 


As of November 9th, 2015, the total bid came in at $6300.00 to fix 147.040 and 442.225 completely. This will be a brand new coax run to 442.225 and to 147.040, plus a spare backup dualband antenna in case either the 442.225 or the 147.040 antenna were to fail.


Plus the backup antenna is primary for the Hood to Coast race system. Without it, we can no longer hold the HTC race on the KOIN system from the site. Instead we'll be using crossband radios from multiple locations to feed the system in a piece meal attempt.


Repairing it will cost thousands; not doing anything will eventually cause the team to take one or more off the air until which time as the team can afford the repairs in the future. This is just the reality of keeping our repeaters at a commercial broadcast site with all the strict new rules and regulations. This isn't just happening to ARRG, it's also occurring with many other groups that have repeaters housed at Radio or TV sites.


ARRG still needs your help! 

 Your donation is covered, we are a 501 (c)3 team and all donations are 100% tax deductible and we'll provide you an IRS approved receipt


Click in the donate button to securely donate any amount to the ARRG Antenna fund.

Your donation to ARRG (we are an official non-profit 501(C)3) is tax deductible.

Make sure to print out your PayPal receipt for your records or contact if you need a full receipt letter. 


Don't have a credit card and still wish to make a difference by donating? 

Please send a check to ARRG, Inc.  PO Box 91213, Portland, OR. 97291




The next monthly ARRG Breakfast get together will be held at 9 AM on

Saturday, November 28th, 2015

at the Peppermill Restaurant  located at 17455 SW Farmington Rd, Aloha, OR 97007


System Fusion Digital Analog System

ARRG is now running the latest DR1X System Fusion Platform

The System Fusion DR1X repeater is operational in auto AMS mode on our Sylvan Hill site on 442.225 + 100.0 hz.


Just updated...

Click here for latest help on

ARRG's System Fusion Repeater System


Did you know that ARRG helps with Ham Radio Estate clean-up, support and even tower removal?

100% of all equipment donated to ARRG, Inc. is fully tax deductible. ARRG is an official Oregon Charity and operates under the IRS 501c(3) charter.Our team of experts will help you clean up a Ham's Shack and properly sell or donate your loved ones

Ham's gear to one or more fully  tax deductible Amateur Radio Public Service teams.

Check out Roland, KG7FOP working Josh, KE7CXS via the 147.120 machine.
Roland was on Mary's Peak, about 100 air miles from the Timberline repeater.

Web Hosting for ARRG is provided as a Public Service by our friends over at
Canvas Dreams, Portland Copyright 2015 ARRG Inc.

In our goal to offer the nightly ARES District One Net better coverage into the five counties that the D1 serves, the ARRG technical team is testing a new linking system that will connect both the South Saddle system and the Sylvan Repeater System on a daily basis.

The D1 net, which is currently carried on the South Saddle System via the 147.320, 442.325 and the SKYLINE 444.400 linked repeaters is now being carried nightly on the Sylvan 147.040 + 100.0 hz

The new controller we installed and programmed will auto connect and then later auto disconnect the two sites per the following schedule

Regular District 1 Net
Mon, Tues, Thurs, Fri and Sat
Repeaters will automatically link together at 07:15 PM and the link will automatically drop at 8:15 PM

Wednesday 07:15 PM to 9:00 PM
For the D1 and SKYWARN nets: repeaters will automatically link together at 07:15 PM and will stay linked up through the SKYWARN net until about 9:00 PM.

Sunday 07:15 - 10:00 PM

The D1 will be linked up and the system will remain linked throughout the 8PM Neighborhood Emergency Net

Latest C4FM News

The C4FM System Fusion Page has been updated with a bunch of new repeaters


October 9th, 2015 442.225 Sylvan Work

A new 70cm Repeater antenna was installed today, however the antenna cannot be used because during the install, the tower crew found that the feedline is also bad.Currently, the 442.225 repeater is running on a temporary borrowed 450mhz antenna. The owner of that antenna has asked for it back as soon as possible.

 If we can't get new hardline purchased and installed before winter, the 442.225 might be forced off the air until next summer.

Cross your Ham fingers:)

New K7RPT Repeaters

 on the Air


October 5, 2015

The 147.120 Timberline System just expanded it's footprint farther into Central Oregon. Both the repeaters below are linked fulltime into Mt. Hoiod.

Eagle Butte 442.225 + 114.8  located at Warm Springs and covers Hood to Bend. The site is at 3800' and linked f/t into Timberline147.120

Cinder Butte - Redmond 147.040 + 114.8 replaced the old Awbrey Butte repeater, eventually will be moved up to our building on Gray Butte.


SEAPAC was incredibly entertaining this year. The entire organization really appreciates each one of you who stopped by to say hello or who supported ARRG by purchasing raffle tickets or buying gear from off the upstairs ARRG swap table.

Congrats to the 2015 ARRG raffle winners

Randy Everson, KF7TPK won the special 'last minute' added prize of a Yaesu FT-60, Jerry Keisler, KG7OX won the grand prize which was a Yaesu FT-8800R. Pat Roberson, W7PAT won the Baofeng UV6B Dualband walkie

A special thanks goes out this year for our 'booth' team and we wish to thank Warren Winner, W7JDT and his wife Barb  for helping to setup and fill in at the booth. A very special thanks goes out to our booth manager, Dale Justice, K7WW and his better half, Mary for all their hard work, setup, booth fill in and take down.

We also appreciate the wonderful energy and work that the following people put in by manning both the
Member ARRG booth and the swap table upstairs.

Mark Steel, KI6RB ♦  Darin Miller, W7DMX  ♦   Brian Nordlund, AC7QE
Marc Douglas, AE7KK ♦  Gerard Davis, KE7CF  ♦ Marlys Davis, KD7SJ
Marc Peterson, W7PM ♦  Tony Hair, no call

Latest up to the minute repeater news and events are announced on our FACEBOOK page first

We are an ARRL Affliated Club