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    Central Idaho Amateur
Radio Club
     
CIARC Meeting Minutes - July 2012
Meeting Minutes - July 2012
Attendance

Attending Members:


W7LCC David McQuade
KF7JPJ Bob Renn
N7IBC Larry Stokes
W7CIA Ray Montagne
KE7TQV Peter Lakomski

Guests:


  Jeremy Humphrey
  Brandi Humphrey

Agenda Items
  1. Membership Report.
    1. Welcome New Members
      • There have been no new members joining CIARC since the June meeting
    2. Number of members in good standing
      • The number of members in good standing remains at 13.
  2. Treasurer's Report.
    • There have been no debits or credits since the June meeting and the CIARC balance remains unchanged.
  3. Repeater Report.
    • The status of the 2-meter repeater was previously reported on the web page (see News) and was emailed to all members in good standing. That report is inserted here.
      • July 3, 2012 : 2-Meter Repeater Update

        Larry Stokes (N7IBC) and Ray Montagne (W7CIA) travelled to Brundage Mountain to look into the intermittent behavior of the 2-meter repeater with respect to coverage going up and down on both transmit and receive. The coax was replaced with LDF4-50 Hardline. A high SWR was evident but there was no time to return to the roof to investigate root cause. A second trip to the mountain will be made to place a dummy load on the end of the hardline to verify the hardline, then migrate the dummy load to the end of the diplexer that is located at the base of the antenna and then verify the antenna. Since the antenna system is not functioning properly, a mobile mag mount antenna is in use temporarily, with the transmitter power amplifier disabled to avoid receiver de-sense (with the antenna attached to the repeater cabinet and in very close proximity to the receiver). As a result, coverage will be greatly diminished until the antenna system is repaired.

        Reports of spurious emissions received on a Radio Shack Realistic Scanner appear to be an issue with the scanner. The report indicated spurious emissions at 168 MHz. The transmitter output was verified to be clean from the primary frequency of 147.020 MHz up through 180 MHz. No emissions could be correlated to the repeater transmitter. It should be noted that scanners are not selective by design. As such, it is possible that the scanner has an image appearing at the local oscillator frequency + the IF frequency or the local oscillator - the IF frequency.

        Harmonic content from the 2-meter transmitter at 294.04 MHz and 588.08 MHz appears to be acceptable.

        The deviation of the encode tone on the 2-meter transmitter was reduced from 1.5 KHz to 750 Hz. This is the proper level for encode and should greatly reduce the buzz heard on the 2-meter transmitter.

        The 900 MHz link radios were installed but since the antenna system problem also impacts 900 MHz, the 900 MHz transmitter was left disabled. The 900 MHz receiver is active but is attached to the non-resonant temporary 2-meter mobile antenna. The audio levels were not adjusted for the 900 MHz radios due to a lack of time and will be addressed during the next trip to the hilltop.

        The 2-meter transmitter output was verified to be stable with 31 watts coming out of the cabinet.

        In summary, the performance issues appear to be isolated to the antenna system.

        Final resolution requires working from the roof of the building. For safety reasons, at least two individuals are needed to complete the antenna system repair.

    • Ray Montagne (W7CIA) and Larry Stokes (N7IBC) intend to travel to Brundage Mountain on Sunday (8 July) to complete installation / repair of the antenna & feed system.
  4. McCall Trail running Classic
    1. Jeremy & Brandi Humphrey
      • We had a lively and fruitful discussion regarding the McCall Trail Running Classic (see below).
      • Registration will close on July 10th. Upon closing of registration, Brandi will make information packets available for radio staff. These packets will be picked up by Ray Montagne (W7CIA) and delivered to radio staff along with an updated radio procedures document.
      • Jeremy Humphrey plans to move aid station 4 up the hill from the current location. Jeremy will provide updated coordinates via a '.gpx' file. Ray Montagne (W7CIA) will integrate this information into the MCTRC web page.
      • Jeremy and Brandi will provide cut-off times for Lake Fork (Aid 5), Boulder (Aid 3) and the Finish (Aid 1).
      • Trails are being marked with white sprinkler markers, blue & white tape, and signs.
      • Barb Pyle of Donnelly Fire Department will be on staff.
      • David Carey is offering vehicles for use by MCTRC staff.
    2. Station Assignments

      McCall Trail Running Classic - Station Designators
      Aid Station Call
      Sign
      Name Arrival
      Time
      Tactical
      Callsign
      Location
      1 W7CIA Ray 0600 Net Jug Mt. Ranch
      2 N7IBC Larry 0700 Aid 2 Jug Meadows Saddle
      3 KE7TQV Peter 0800 Aid 3 Boulder / Louie Lake Trailhead
      4 W7LCC Dave 0830 Aid 4 Shaw Twin Lakes Ridge
      5 KF7JPJ Bob 0900 Aid 5 Lake Fork Trailhead

    3. Review Procedures
      • Our plan for tracking participant arrivals and departures and relaying that information to the net control operator at Aid 1 parallels the MCTRC procedures and appears to be a good plan.
      • Since aid stations do not need to be manned until just prior to participants arriving at the aid station, a staggered schedule for radio staff arriving at the aid stations has been planed and is included in the table of staff assignments.
      • As radio staff arrive at their stations, they should contact net control to check-in and request a list of cancellations.
    4. Other planning
      • Ray Montagne (W7CIA) and Bob Renn (KF7JPJ) will drive test aid station 5 prior to the event but after a trip to the repeater to address the antenna system issues has been completed.
      • Ray Montagne (W7CIA) and Peter Lakomski (KE7TQV) will travel to aid station 3 on 13 July for familiarization.
      • Ray Montagne (W7CIA) will provide a high power radio (with antenna adapters) to Bob Renn (KF7JPJ) in support of aid station 5.
      • Ray Montagne (W7CIA) will provide a high power radio and mobile antenna to Peter Lakomski (KE7TQV) in support of aid station 3.