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Iliamna

Iliamna

Mar 14, 2018

Station Notes

  • Iliamna Communications hub which serves O18K and P18K
  • Smart RG DSL modem - in bridge mode and passing its IP to Linksys router
  • Linksys router - running in PPPoE mode. It's LAN address is 192.168.33.1. It can be remotely accessed at http://67.59.99.245:8331/
  • O18K B44 - 192.168.33.2, baseport 5330
  • P18K B44 - 192.168.33.3, baseport 6330
  • O18K Gateway FGR2 radio (installed in Iliamna) - 192.168.33.10:5398. It can be accessed remotely at http://67.59.99.245:5398/
  • O18K End point FGR2 radio (installed in O18K hut) - 192.168.33.11:5399. It can  be accessed remotely at http://67.59.99.245:5399/
  • Wifi network may be hidden so you may need to add manually

    • Name/SSID: IRIS-iliamna

    • PW: same as the wifi for AOC

    • Security: WPA2/WPA-PSK

Service Plan

  • None at this time

Site Access

  • Call the Iliamna Air Taxi office (907-571-1248 or 907-571-1445). Let them know you are with IRIS and have earthquake monitoring equipment in their hanger in Iliamna. See if you are able to access the equipment on the day you wish to go there. While you have them on the line, you can book your flight to Iliamna. Otherwise, go to their website to book (https://www.iliamnaair.com/)
  • The TA communications box is located in the upstairs of the Iliamna Air Taxi Hanger which is attached to their office and passenger waiting building
  • Once you land in Iliamna, go into the Air Taxi office and let them know you are with IRIS and would like to work on the equipment in the hanger
  • Go up the stairs in the hanger. At the top of the stairs mounted to the wall on your left is the IRIS comms enclosure. Use a ladder or chair to reach the enclosure

Site Contact

Site Visits

  •  2017_05_12 (Service- D. Bloomquist)

    USArray Station Service Report
    Form V1.0

    STATION CODE:
    Iliamna Communications hub which serves O18K and P18K

    STATION Locale Description:
    Iliamna, AK

    STATION SERVICE LOG DATE:
    20170512

    STATION/SENSOR DOWN TIME (UTC):
    Comms down for a few hours but no loss of data

    SERVICE DESCRIPTION:
    Move the SmartRG DSL modem to bridge mode and then install a Linksys router. Install new Raydom Yagi antennas.

    UPON ARRIVAL:
    DSL modem was functional.

    ACTIONS TAKEN:
    Called TelAlaska to initiate transition to bridge mode for DSL modem
    Installed Linksys router
    Installed raydom yagi antennas on the roof of the hanger

    EQUIPMENT REMOVED:
    Two black yagi antennas

    EQUIPMENT INSTALLED:
    Two Kathrein Scala Raydom Antennas (PN RY-900B)
    Linksys router (no barcode)

    COMMENTS:
    I performed a speed test on the DSL modem BEFORE moving it to bridge mode. The average data rate was 37.8 KB/sec (0.31 Mbps). I ran out of time to perform a similar test after the modem was moved to bridge mode unfortunately.

    I connected to both stations with Willard to verify settings. The connection to P18K was fast and without issues. The connection to O18K was plagued with command timeouts. I made the connection to each station several times in an attempt to get an idea of their relative performance and P18K definitely seems to be the better performing and more robust link.

    Contacting TelAlaska to move the DSL modem into bridge mode went smoothly and once the Linksys was configured to run in PPPoE mode both stations began dumping data to ANF.

    Installing the two Raydom yagis also went smoothly. The pipe they are installed on is securely attached to the building but it is able to flex and move in the wind. I attempted to remove some of this play by hose clamping it to an adjacent pipe.

    Once the antennas were swapped, the P18K radio immediately connected and data started dumping. That was not the case with the O18K radio. The LEDs on the radio in Iliamna indicated that the radios were connected but I was unable to ping or otherwise access the equipment at the site. I "fine-tuned" the pointing as best I could and was eventually able to get a connection and the station began dumping data to ANF.

    I do think the 900MHz radio link to O18K is not very robust. The radios are programmed in a point to multi-point configuration and the RF Data rate is set to high (as opposed to normal). These settings are fine for a short RF link but they are not ideal for a longer distance shot. Additionally, the Yagi antenna at the station is inside the hut and partially blocked by solar panels. I think that updating the configuration and moving the station yagi outside of the hut will substantially improve the RF link. Unfortunately, these changes will require a visit to the station since the configuration of these older model FGR radios cannot be done remotely.

    VISITOR:
    D. Bloomquist (report author)

    ON NEXT VISIT:
    Install new freewave radios for O18K and possibly P18K

    CHANGES AFFECT INSTRUMENT RESPONSE:
    None

  •  2017_10_11 (Service- D. Bloomquist)

    USArray Station Service Report
    Form V1.0

    STATION CODE:
    Iliamna Communications hub which serves O18K and P18K

    STATION Locale Description:
    Iliamna, AK

    STATION SERVICE LOG DATE:
    20171011

    STATION/SENSOR DOWN TIME (UTC):
    None

    SERVICE DESCRIPTION:
    Swap out O18K's older model Freewave gateway for a new FGR2 gateway radop.

    UPON ARRIVAL:
    Comms box was functioning normally and in good shape.

    ACTIONS TAKEN:
    Installed new FGR2 gateway

    EQUIPMENT REMOVED:
    Older model FGR gateway - 5004505 (884-1384)

    EQUIPMENT INSTALLED:
    FGR2 gateway - 5018386 (SN 950-4391)

    COMMENTS:
    Once the new FGR2 radio was installed, the time needed to connect to the Q330 at O18K with Willard dropped considerably and appeared to be a much faster and more reliable link. The power cable to the new FGR2 is wired to the output of the timer relay which will power cycle the radio once per day.

    The current network configuration at Iliamna is:

    Smart RG DSL modem - in bridge mode and passing its IP to Linksys router

    Linksys router - running in PPPoE mode. It's LAN address is 192.168.33.1. It can be remotely accessed at http://67.59.99.245:8331/

    O18K B44 - 192.168.33.2, baseport 5330

    P18K B44 - 192.168.33.3, baseport 6330

    O18K Gateway FGR2 radio (installed in Iliamna) - 192.168.33.10:5398. It can be accessed remotely at http://67.59.99.245:5398/

    O18K End point FGR2 radio (installed in O18K hut) - 192.168.33.11:5399. It can  be accessed remotely at http://67.59.99.245:5399/


    VISITOR:
    D. Bloomquist (report author)

    ON NEXT VISIT:
    Install new freewave radios for P18K

    CHANGES AFFECT INSTRUMENT RESPONSE:
    None

59.756,-154.907, Elev: 137ft


Permits

  • None


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