Rochester Area Repeaters

The following amateur radio repeater facilities are located in Olmsted county near Rochester, Minnesota. Repeaters using the call sign WØMXW are owned and operated by the Rochester Amateur Radio Club.

Click on the repeater call sign for a brief description of each repeater facility. For a map showing the repeater location, click on the map link. The repeater location is marked by a small red cross approximately in the center of the United States Geological Survey (USGS) topological map views. The map scale and size can be changed by clicking on options along the top map border.

Notes:

• All RARC repeaters use the club call sign WØMXW. The WØMXW trustee is Gil Baron, WØMN.
• The RARC 146.82 and 146.625 repeaters are sometimes set to require a 100 Hz tone access to resolve interference problems. Repeater users are encouraged to set their radios to normally use a 100 Hz tone when using the repeaters.
• The WØEAS/R repeater is owned and operated by Olmsted County Office of Emergency Management. The trustee is Dave Carr, WØEAS.
• The KGØBP/R repeater is owned and operated by KGØBP.

WØMXW 146.625 Mhz Repeater

The WØMXW 146.625 Mhz repeater, owned by the RARC club, is located on the top of a Mayo Clinic building in downtown Rochester. At a height of 250 feet, the repeater provides excellent coverage of central Rochester.

The WØMXW 146.625 Mhz repeater output frequency is 146.625 Mhz and the input frequency is 146.025 Mhz. The offset is -600 kHz.

In December, 2003, the RARC club purchased a new Advanced Communication Systems KRP 5000 Repeater with the following features: CAT 1000 Controller, ED 1000 Windows Editor for the CAT 1000, DR-1000B Digital Voice Recorder, DL-1000 Audio Delay Board and CTCSS Board. A new antenna and feedline was also installed on top of the Mayo Clinic building. The new repeater is currently in operation with a transmitter output power of approximately 100 watts.

Repeater User Functions

The following user functions are availble on the WØMXW 146.625 repeater. Each user function is activated by keying a 3 digit DTMF tone control code.

Repeater User Function	Code	Description
Time	400	Announces current time.
Echo	725*	Echo function allows user to record and play back a sample of received audio of up to 7 seconds. Enter the 725 control code followed by a "*" key. Release your PTT key following the "*" key. You will then hear the repeater say "Start test now." Key your PTT and begin speaking for up to 7 seconds. When your transmitter PTT switch is released, the repeater will beep and then play back the test audio message.
DTMF Keypad Test	375	To test your radio DTMF tone keypad, press your PTT on your transmitter and press the DTMF buttons or keys that you wish to test. Release your PTT and the repeater will read back, in audio voice, all of the keys that were decoded.

WØMXW 146.82 Mhz Repeater

The WØMXW 146.82 Mhz repeater is owned and operated by the RARC club and provides reliable amateur radio communications for a wide area including Rochester, Olmsted county and southeast Minnesota area.

The WØMXW repeater output frequency is 146.820 Mhz and the input frequency is 146.220 Mhz. The repeater is located at an elevated site approximately two miles west of the center of Rochester. The lat/lon coordinates are N44° 01.270' N, W92° 32.500' W. The repeater antenna is located in an inverted position at a height of 275 feet. The total height of the tower is 325 feet. The base of the tower is 1204 feet above sea level.

In August, 2003, the RARC club purchased a new Advanced Communication Systems KRP 5000 Repeater with the following features: CAT 1000 Controller, ED 1000 Windows Editor for the CAT 1000, DR-1000B Digital Voice Recorder, DL-1000 Audio Delay Board and CTCSS Board. The new repeater is currently in operation with a transmitter output power of approximately 100 watts.

146.82 Repeater Video Tour Take a short tour of the 146.82 repeater site provided by John NØHZN. (Click on image at left to download and play video) wmv video file format, 6.5 Mbytes

Autopatch

The WØMXW 146.82 repeater repeater autopatch operates as an "open" autopatch and is available for use by any amateur radio operator. However, an access code is required for autopatch operation. The autopatch access code may be obtained from a RARC club member and should not be broadcast on the repeater. Visiting hams to Rochester are welcome to use the autopatch function by requesting a RARC club member listening on the repeater to bring up the autopatch function.

To initiate an autopatch operation, key your transmitter by pressing your transmitter PTT (push-to-talk) and identify that you are accessing the autopatch. Then immediately enter the autopatch access code followed by the telephone number your are calling using the DTMF tone keys on your radio. (Do not release your PTT or "un-key" your transmitter between keying the autopatch access code and the telephone number.) When you release the PTT on your transmitter, the repeater controller will redial the phone number and you will hear a series of beeps on the repeater output to indicate that telephone dialing is in progress.

To terminate the autopatch operation, key your transmitter and enter the autopatch termination code using your DTMF tone keys. At the end of your transmission, the repeater voice will acknowledge autopatch termination by logging the current time. An example message may be "Autopatch completed at 7:30 p.m."

Speed Dial

The set of autopatch speed dial numbers is stored in the repeater controller to facilitiate rapid dialing of telephone numbers. Speed dial numbers are only available to current RARC club members. To obtain a speed dial number assignment, contact John, NØHZN.

To use your speed dial autopatch number, key your transmitter by pressing your PTT and identify that you are accessing the autopatch. Enter your three digit speed dial number using your DTMF tone keys. When your transmission drops, the repeater will announce the call sign of the station being dialed and will then dial the speed dial telephone number.

The speed dial operation is terminated in the same manner as a normal autopatch call operation.

Repeater User Functions

The following user functions are availble on the WØMXW 146.82 repeater. Each user function is activated by keying a 3 digit DTMF tone control code on a 2 meter radio operating on the 146.82 repeater frequency.

Repeater User Function	Code	Description
Time	400	Announces current time.
Echo	725*	Echo function allows user to record and play back a sample of received audio of up to 7 seconds. Enter the 725 control code followed by a "*" key. Release your PTT key following the "*" key. You will then hear the repeater say "Start test now." Key your PTT and begin speaking for up to 7 seconds. When your transmitter PTT switch is released, the repeater will beep and then play back the test audio message.
DTMF Keypad Test	375	To test your radio DTMF tone keypad, press your PTT on your transmitter and press the DTMF buttons or keys that you wish to test. Release your PTT and the repeater will read back, in audio voice, all of the keys that were decoded.
Current Temperature	70030	The current outside temperature at the repeater site will be provided by the repeater in an audio voice.
Maximum and Minimum Temperatures For The Day	70032	The maximum and minimum outside temperatures for the day at the repeater site will be provided by the repeater in an audio voice.

Please enter the repeater user function control codes slowly and carefully.

If there are any problems using the repeater user functions or if the repeater does not appear to be operating correctly, please contact John, NØHZN.

WØEAS 147.255 Mhz Repeater

The WØEAS 147.255 Mhz repeater is owned and operated by Olmsted County Emergency Services. The repeater is located east of Rochester atop a 300 ft. tower east of Century High School in northeast Rochester. The approximate GPS coordinates are N44° 02.672', W92° 23.883'.

The repeater output frequency is 147.255 Mhz and the input frequency is 147.855 Mhz. The access tone frequency is 100.0 Hz. The repeater transmitter output is 100 watts.

The repeater trustee is Dave Carr, WØEAS.

KGØBP 442.750 Mhz UHF Repeater

The KGØBP UHF repeater operates on 442.750 Mhz with a positive 5 Mhz offset. An access tone of 110.9 Hz is required. The repeater is located at the Emergency Operations Center (EOC) facility on Brattas Drive SW at the Rochester airport. The primary purpose of the UHF repeater is to support Emergency Service operations; however, the repeater is generally available for normal amateur radio use.

In December, 2004, the KCØBP UHF repeater was linked to the N9QIP UHF Wisconsin linked repeater system. Cities and area that is covered by the N9QIP linked system as of January 2005 are: Rochester, Galesville/La Crosse, Barabboo, Eau Claire/Albertville, Edgerton, Fon du Lac, Hollandale, Milwaukee, Northfield, Rice Lake, Richland Center, River Falls, Tomah and Wausau. Users of the KCØBP repeater should wait approximately 5 seconds after keying the repeater before speaking to allow the linking operation to take place.

The repeater is owned and supported by KGØBP.

WØMXW 443.850 Mhz UHF Repeater

WØMXW UHF Repeater

The WØMXW UHF repeater, owned by the RARC club, is located at the top of the bell tower at Assisi Heights near U.S. Highway 52 and 19th Street NW in the northwest part of Rochester. The approximate GPS coordinates are N44° 02.438', W92° 28.831'.

The UHF repeater output frequency is 443.850 Mhz and the input frequency is 448.850 Mhz. The tone access frequency is 71.9 Hz.