Missouri S&T Amateur Radio Club has two amateur radio repeaters on top of the Thomas Jefferson Hall South Tower in Rolla, Missouri. These allow operators to use inexpensive handheld radios (walkie-talkies) to communicate over 60 miles away from almost anywhere inside Phelps County, and across the world if going through our internet linking systems. A Technician Class license is required to utilize them.
Both repeaters are equipped with battery backup sufficient to keep them online for several hours of operation, and the entire building is supplied with emergency power from a Diesel generator. At this time, it is unknown if internet linking will remain operational if commercial power is lost.
Please direct all questions, comments, and coverage reports to w0eee@mst.edu.
VHF 2 meter Repeater
This is the primary repeater used by the club.
The VHF repeater operates on 145.450 MHz with a negative (-) 0.600 MHz offset. A PL tone of 110.9 Hz is required and transmitted by the repeater.
This repeater is a Motorola MTR2000 operating at 50 watts, and uses a stack of 4 folded dipoles.
UHF 70cm Repeater
The UHF repeater operates on 443.825 MHz with a positive (+) 5 MHz offset, and will operate on analog, YSF, or DMR. It is activated on DMR using Color Code 12, or on analog using a PL tone of 110.9 Hz. The repeater transmits PL 110.9 Hz when operating on analog, which may be used to suppress the sound of digital traffic out of the repeater.
WiresX is available on this repeater, and there is no default reflector. Reflectors are automatically disconnected after 10 minutes of no RF activity.
DMR TS 1
- 2 Missouri S&T Miner Net
- 3129 Missouri Statewide
- 9500 Collegiate
- 31291 Southwest Missouri
- 31292 St Louis Metro
- 31295 Central Missouri
DMR TS 2
- 31201 Backyard Repeater Group – Kansas City (BYRG)
Notes:
Local 2 (TG 2) on TS1 is connected to TG 312944 (Missouri S&T Miner Net).
TG 312944 can be used remotely to talk on TS2 of the Rolla DMR repeater.
DO NOT USE TG 312944 ON THIS REPEATER.
In the event you would like to use another talkgroup that is on the Brandmeister network, we ask that if you want to activate any other talkgroup other than the ones listed above, please use time slot 1.
Example, if you want to talk on TG91 (Worldwide) or TG93 (North America), program your radio to use slot 1.