Central Idaho Amateur
Radio Club
CIARC - Repeaters - 70cm DMR
KC7MCC UHF/70cm DMR Repeater

Table Of Contents

The KC7MCC UHF/70cm repeater is located in Adams County, near New Meadows.

It is absolutely essential that all operators become familiar with the DMR operating guidelines. These can be found on the Idaho ARES web-site by clicking here, or on this (i.e. CIARC) web-site by clicking here. These guidelines provide a context regarding the shared resource nature of DMR and wide-area networked repeater operation, and are structured to make the operating experience more enjoyable for all operators.

Operators who do not comply with the above mentioned guidelines may find themselves subject to FCC part 97.205(e) restrictions.

Operators hearing stations that do not adhere to the DMR operating guidelines are encouraged to not respond to operators that operate in violation of the guidelines in an effort to discourage poor operating practices.

KC7MCC UHF/70cm Repeater Access Parameters
MODE Timeout
KC7MCC 311604 Adams Co. 447.500 442.500 DMR 10

CONTRUCTION of this repeater is a work in progress. Access may be intermittent until all development tasks have been completed. Completion of work is anticipated to occur in the early Spring of 2017. Check the repeater status page for information on availability of this repeater.

The KC7MCC 70cm Repeater has migrated from analog FM to Digital Mobile Radio. This was accomplished with the use of an MMDVM / RaspberryPi, duplexer and radios donated by W7CIA. This configuration does not have a direct linking capability to the KC7MCC link back-bone, but indirect linking on time-slot 1 is available through the W7CIA time-slot 1 cluster. See the page on the W7CIA repeater for additional details.

If your station is not DMR equipped, and you attempt to listen directly to the KC7MCC repeater on 442.500 MHz, you will only hear digital communications, which will sound like noise. It is recommended that stations equipped with standard analog FM capability use either the No Business Mt. or Brundage Mt. CIARC analog 2-meter FM repeaters.

DMR Code Plug Parameters

For those wishing to add the KC7MCC UHF/70cm DMR Repeater to their DMR code-plug, the following programming parameters should be employed:

KC7MCC UHF/70cm DMR Code-Plug Parameters
1 BM ID 3116 DYNAMIC 1 3116 1 180
2 BM MT 3130 DYNAMIC 1 3130 1 180
3 BM NV 3132 DYNAMIC 1 3132 1 180
4 BM OR 3141 DYNAMIC 1 3141 1 180
5 BM TX 3148 DYNAMIC 1 3148 1 180
6 BM UT 3149 DYNAMIC 1 3149 1 180
7 BM WA 3153 DYNAMIC 1 3153 1 180
8 BM ZONE 7 DYNAMIC 1 31097 1 180
9 BM TAC 5 DYNAMIC 1 8955 1 180
10 BM SNARS 31328 DYNAMIC 1 31328 1 180
11 BM SOCAL 31066 DYNAMIC 1 31066 1 180
12 BM NORCAL 31068 DYNAMIC 1 31068 1 180
13 TS1 NET STATIC 1 8 1 180
14 TS2 NET STATIC 2 2 1 180
15 BM ARES-ID 31160 STATIC 2 31160 1 180
16 BM EMCOM 9911 STATIC 2 9911 1 180

If you are constructing a code-plug that supports the KC7MCC, N7IBC and W7CIA DMR repeaters, it is recommended interleaving channels for each of the repeaters as contiguous channels of a like talk-group to promote driving safety. For example, if the TS1 NET for the KC7MCC DMR repeater is adjacent to the channel for the N7IBC DMR repeater, and then the W7CIA DMR repeater, you will not need to change zones when mobile operation requires you to move from one repeater to the next. You will only need to change channels.

Dynamic talk-groups (i.e. push-to-talk talk-groups), residing on time-slot 1, are available to stations directly using the KC7MCC DMR repeater with DMR Tier II equipment, or by stations using analog repeaters that are on the CIARC 33cm link back-bone (when enabled). While stations on DMR will have the ability to activate a specfic dynamic talk-group, users from the CIARC link back-bone do not have the ability to select a talk-group and can only use the talk-group that is currently activated.

Calls initiated from other repeaters that are on the BrandMeister network, and appearing as a dynamic talk-group on time-slot 1, will be heard on the CIARC repeater network whenever the 33cm link is enabled. Any traffic on the CIARC repeater network will be heard on the active dynamic talk-group on time-slot 1. This means that your traffic may be heard on other repeaters in Idaho (and other regions, states, countries). The 33cm link will be disabled during the monthly CIARC NET, and at other times at the discretion of the control operator(s).

Dynamic talk-groups on time-slot 1 may be scheduled to operate as static talk-groups to coincide with specific NET activiies. See the CIARC home page for NET details. See the BrandMeister 311604 Repeater information page for current static talk-group and timed static talk-group information.

Note that the BM prefix in the channel naming indicates that the channel is routed to the BrandMeister network.

NOTE: Dynamic talk-groups are advisory. Technically, it is possible to program any talk-group into your radio's code-plug file and use it. There are no technical restrictions applied by the repeater or the BrandMeister network with respect to dynamic talk-groups. However, the repeater trustee recommends that operators adhere to using the talk-group listing above in as much as is practicable.

Information on the KC7MCC repeater that is published on BrandMeister can be viewed by clicking here.

Station operators are requested to limit their use of high-volume traffic talk-groups, such as California statewide 3106 or USA Nationwide 3100. If you need to use a high-volume talk-group, please limit that usage to making a call and then move to a talk-group with lower traffic volume.

Private Calls

Stations making Private Calls are asked to restrict private calls to time-slot 1. Private Calls, whether initiated while on a talk-group, or programmed by setting the TX Contact to a private call contact, can be carried out on time-slot 1. If you do not use a pre-programmed channel for a private call, please make sure that you are on a channel that specfies time-slot 1 prior to initiating a private call. If you are on a time-slot 2 channel when you receive a private call, please, at your earliest convenience, coordinate a pause and switch to a time-slot 1 channel prior to resuming a private call.

KC7MCC Repeater Block Diagram

KC7MCC Repeater Coverage Footprint


Clustered Time-Slot / Talk-Group Pairs

The KC7MCC 70cm/UHF DMR Repeater, N7IBC 70cm/UHF DMR Repeater and W7CIA 2m/VHF DMR Repeater are configured to subscribe to a cluster on Time-Slot 1 / Talk-Group 8 and to another cluster on Time-Slot 2 / Talk-Group 2. Respectively, these channels are named TS1 NET and TS2 NET. Any communications occurring on any of these repeaters will be heard on that repeater and the other two repeaters when one of these channels is used. Clustered Talk-Groups are STATIC.

The maintaining of a static talk-group on both time-slots is not conventional. The purpose of doing so is to support primary NET operations on one time-slot, and allowing traffic to be moved off of the primary NET and onto the secondary NET in order to maintain communications capability while allowing the primary NET to serve, unimpeded by traffic, as a coordinating NET. The convention that has been established for these two clustered time-slot/talk-group pairs is that the primary NET operations will be conducted on TS2 NET while off NET traffic will be handled on TS1 NET.

A composite coverage prediction for repeaters included in these clustered channels is shown below: