Central Idaho Amateur
Radio Club
     
CIARC - Repeater Maintenance Task List
Repeater Maintenance Task List 2017
  1. KC7MCC 2-Meter Repeater (No Business Mountain)

    1. Investigate root-cause of repeater failure in December of 2016 and perform corrective maintenance.

    2. Install DeEmphasis jumper on repeater controller port 1 (main repeater). DeEmphasis was lost when the Yaesu DR-1X repeater was installed with a Micor squelch gate that taps audio directly from the discriminator.

    3. Adjust automatic ID level to < 750 Hz deviation. Although 750 Hz deviation is standard for identifier audio, it is recommended that the setting be reduced to 500 Hz deviation.

    4. Install replacement gas discharge tubes into AlphaDelta lightning arrestors (e.g., 2X)

    5. Repair Kenwood TK-750 transmitter in back-up repeater.

    6. Install a 40-watt light bulb in the cabinet, with relay control to enable / disable the light bulb. This is to provide heat within the cabinet during winter months so that the equipment remains operational and on frequency. This can be turned on/off via DTMF command by the control operator(s).

    7. Install metal box, used to extend the rear cabinet door, to protect the oversized repeater (which has a deeper dimension than the cabinet). Fabrication by John Quinzio [K6JMQ].

  2. KC7MCC 2-Meter Repeater (Brundage Mountain)

    1. Install DeEmphasis jumper on repeater controller port 1 (main repeater). DeEmphasis was lost when the Yaesu DR-1X repeater was installed with a Micor squelch gate that taps audio directly from the discriminator.

    2. Adjust automatic ID level to < 750 Hz deviation. Although 750 Hz deviation is standard for identifier audio, it is recommended that the setting be reduced to 500 Hz deviation. Thermal instability, as winter temperatures take hold, appear to increase this deviation setting.

    3. Install replacement gas discharge tubes into AlphaDelta lightning arrestors (e.g., 2X)

    4. Install a 40-watt light bulb in the cabinet, with relay control to enable / disable the light bulb. This is to provide heat within the cabinet during winter months so that the equipment remains operational and on frequency. This can be turned on/off via DTMF command by the control operator(s).

  3. KC7MCC 70cm Repeater

    1. Install Alinco DR-435 MKIII radios (donated by Ray Montagne [W7CIA]), which will replace the Repco Dimension II repeater.

    2. If battery equipped, this repeater could serve as a portable repeater that could be deployed in support of public service events, such as MCTRC, IMTUF-100, Four Summit Challenge.

  4. N7IBC 70cm Repeater (McCall)

    1. Possible migration to DMR, using the MMDVM board set. TBD...

  5. W7CIA 70cm Repeater (Cascade)

    1. This repeater was replaced in 2016 with a VHF/2m repeater. The operating frequency and frequency coordination were surrendered back to the Idaho frequency coordinator. Some components of this repeater will be redeployed into service with the KC7MCC 70cm repeater.

  6. W7CIA 2m Repeater (Cascade)

    1. Migration to DMR with installation of a Hytera RD-982, scheduled for January of 2017. See W7CIA menu item that is located under the Repeaters menu for additional details.

  7. W7CIA IRLP / EchoLink

    1. Investigating options to move IRLP and EchoLink infrastructure to another site (possibly at K6JMQ at New Meadows).

  8. KC7MCC Surplus Equipment Liquidation

    Recommend liquidating the following inventory items, to be sold to generate revenue:

    1. Repco Dimension II UHF Repeater

      This is a crystal controlled repeater of mid 1980s vintage. Receive sensitivity is somewhere in the 0.3µV area, and does not meet current equipement performance standards. The crystals should be removed prior to sale. CIARC retains a 70cm frequency coordination, and better equipment is available for 70cm. Duplexers, cabinets and other external components are not be sold with this repeater.

      It should be noted that spare FET devices are tapped inside the Repco Dimension II chassis. Spares were acquired after lightning resulted in a failure of the original devices. These spares are to be included with the Repco Dimension II.

    2. Kenwood TK-705 VHF 2m FM Transceivers.

      There are four of these radios in inventory. These made up the original repeater on No Business, circa 2012 (with spares). With the installation of the Kenwood TK-750 and Yaesu DR-1X repeaters at both the No Business Mt. and Brundage Mt. repeater sites, these radios are no longer needed. Two radios were purchased at $30 each while an additional two radios were donated. The radios originally used for the repeater transmit function have had the drive reduced and should have the original power setting restored (along with removal of repeater controller interface cabling) prior to sale. These are 15-watt 16-channel radios. Optionally, these could be made available to CIARC members (a good option for members who run mobile with a hand-held transceiver).

      Although these radios came out of FCC Part 90 service, these radios are not narrow band compliant and cannot be returned to FCC Part 90 service.