Tech Staff Meeting Notes April 21, 2011

The top priority is always repair of down stations.
NM problem stations
ET problem stations

Duty Table


  • Repair down stations and routine maintenance (priority stations include: RDGT, then CTCT and GLST )
  • Contact all landowners for permission refresh
  • Site visits and Preventive Maintenance at all stations

  • News & Highlights

    The external review panel will meet with seismic and IT staff on Monday April 25 at 11AM in the house 4 seminar room.

    The NLE will be May 16, 2011. We'll be exercising our WinLink system.

    Tentative date for the Fish Fry is July 8.

    Some items, mostly comm issues, are languishing on this list for an exremely long time. Those responsible for those items need to find a solution to the problems or we need to decommission those stations.


    Short Period & Broadbands

    Dynamic NMDown list

    Top priority stations - RDGT, then CTCT and GLST

    MPH.LL / Mitch
    RDGT-sporadic /Dave
    CATM-sporadic /Dave
    CTCT-sporadic /Dave - see image

    Misc Problems
    BRNM - see image
    CTCT - see image

    Gain Channel Problems
    FLPT/Dave (doesn't gain range)
    CATM/Dave -gain ranges every time (canister in the shop being rebuilt)

    Isis Oxidation

    Muted Amplitude

    Strongmo Down

    NODE Tasks


    need a padlock on the door.

    AC unit in the penthouse isn't working. Probably just needs cleaned.

    DSL is installed but the networking is slightly different from lnxt. Steve is working out the problems making both the dsl and the dbb simultaneously accessible.

    Construction is ongoing at the mill.


    Chris got a quote for the service contract for the generator. It raised some questions and he'll get more detail on what it actually includes so we can decide whether to purchase it.


    Need alternate comm path. Telecom says dsl isn't available (though we once had ISDN).

    Does G and D provide internet service? Would it be worth purchasing service from them?

    G and D and the local EMA installed a 25kW generator to power that side of the building. If there's room power-wise would they let us power the rack from it too? We could share the maintenance of the generator. We'd also have to install a transfer switch.

    AZTN: Replaced XLAK clock. Still doesn't work. The new clock tested successfully in the shop. Bad antenna?


    P-plant has a spare Carrier AC unit that we could use a backup for the Liebert. It consists of a large internal unit like the Liebert and an external condensor. Chris will check it out.

    The DBB firewall installed and operating. Only specific ip's are allowed through. You need to use the route command to manually add a route. Evertying behind the firewall is the same D ip number but with 10.156.1 instead of 141.225.156. Remaining items include:


    Ownership, Operation, and Maintenance of the four Charleston, SC stations (C1SC, C2SC, ADSC, and TRSC) will be turned over the Univ. of SC at Columbia. Initial December 8-9 went well. John contacted site owner and IT people for firewall and permissions. He requested CERI access be continued for a tbd transition period. Mitch will work with Phillip to get data flow redirected to Columbia. Then those feeds will get added to the CO network export to CERI. The stations will keep the same name but the network code will change (from NM to CO).

    Paperwork is missing for some visits so the state of some upgrades is not completely known. Remember, the job's not finished til the paperwork's done!

    I added the firmware column to the upgrade list as that seems to be causing problems at some sites. Are there problem sites that have all the hardware but need new firmware that should be added to this list? The worst offenders of this list are CBHT, MCAR and RDST.

    Steve will pursue getting CBHT on an isolated subnet as suggested by the CBHS IT person. Mitch will put RDST on gcf2ew to see if that works.

    Year3 upgrades
    stationyr3 hardwareroutermss100firmwareplugcomment
    RDSTYYN??Al has determined that other RDST IP's are trying to access our router, and Steve will look at routers external connection and security settings
    MCARYYY??upgrade not documented
    CUETYYY?Nupgrade not documented
    CBHTYNY??Steve torequest our 192 IP be put on a private VLAN
    NAITNNN??still not on internet

    Replace foam rubber plugs at all year 1 stations (need to notch it to accomodate the GPS pods): ASAR, CBHT, CUET, CVTN, HDBT, LNXT, MCAR, NAIT, SFTN & TUMT.

    NAIT: Couldn't get the NWS cable modem to cooperate at NAIT (firewall?). Dean was going to ask Comcast about it and maybe get a new modem. Steve will follow up.

    CVVA is upgraded but there remains an unresolved issue with the firewall Steve is working with Merritt Reagan NGC to get them resolved. Merritt says their it security has been slow to respond but they're still working on this. Its due for a routine maintenance visit.

    We need a single document (access database excel spreadsheet) to document information on all freefield strongmotion stations to include contact(s), current IP's(eternal/external), what ports are allowed in from what IP's here at CERI, telnet yes or no, trigger levels etc. etc.


    Awaiting funding approval from TDOT to replace the DAS's with Kinemetrics Granites.


    Bad CMG5 E/W.

    Not getting broadband feed.

    On hold for Boswell comm.


    Replace two bad mss100's.

    Bad 100' accelerometer.

    On hold for Boswell comm.


    Dynamic ETDown list

    How many of these are bad batteries or awaiting power upgrades?. Passing a load test in the summer is not always predictive of performance in the winter.

    Down TRYN-reinstall after tower is rebuilt.

    Strong Mo Down BCRT
    CVVA -firewall issues
    CSTN -very gappy

    Doesn't degain in Xpick/Mitch

    Remaing upgrade stations are DYTN, CCRT, and CPRT (remaining ARRA upgrade is GTTN). See map.
    CCRT is next on the list.
    CPRT is trenched and ready for upgrade. Repeats through GTTN so we want to do these in the same trip.
    DYTN permission is Nashville awaiting a decision
    GTTN is awaiting internet permission (Dollywood is top prospect).

    STAR Node

    BHT move. Latest update from John:

    1. We had planned on moving BHT from it's present location because access has gotten so bad.
    2. I have been working on getting a permission to move it about 3 miles to the E NE to Black Mtn. There is some issue with the permission, but my contact with the Cumberland Trail State Park says he believes we can work it out.
    3. If this station is ever upgraded to a RefTek, it is doubtful we would be able to make the 45 mile radio shot from Black Mtn. to Starr Mtn. so we would have to find a new place to transmit to. It will not repeat through any other station, because it is either blocked by mountains or too long a shot.
    4. Previously, we had discussed trying to find another site to relocate BHT to in order to center it between WMTN and DYTN.
    5. I found a site in the Catoosa Wildlife Area called Pilot Knob Mtn, (36 deg. 322'N, 84 deg. 45'W). It is about 18 miles NE of BHT. It is at an old fire tower site and apparently there is still a good road up to it.
    6. I have also found a couple of potential sites to transmit to where we could get internet.

    So, before I proceed any further, we need to decide if a replacement station for BHT should get a RefTek and if so, do we want to put the station at Black Mtn. or at another site.

    BRBC Node

    Power upgrades: TVNC, RBNC, and TRYN.

    TRYN: Hardware is removed from the tower and will be reinstalled when the new one is complete.

    There seems to be a strange, repeating signal on many of the stations, most notably on WSNC/RBNC. It repeats about every 14 minutes and lasts about 1 sec. Example data are in /gaia/home/mwithers/public_html/STAFF/Analog/2010/20100910_051500_MAN. Click this picture of it on CCNC. John listened for them on the spectrum analyzer at the BRBC node and reports:

    Every 13 min. 53 sec. there is a noise burst that raises the noise floor and knocks out our stuff. I'm wondering if it could be a sideband from something. I listened and I couldn't hear anything but white noise when it happens. I'm wondering if cavity filters and pre-amps will help.

    MTTN Node

    Greentop is getting a new tower too. There will not be internet up at the mountain, so we need to find a place to transmit to. We should be able to hit just about anything in Knoxville, Maryville or Pigeon Forge; is there a preference?


    Replaced RLAP 45W panel with a 130W panel. The freewave was attacked by ants which also caused the Moxa to go dumb. Replaced both and its working now.
    All monuments still need general PM, mainly painting.

    The VLF power supplies and chargers are in house awaiting installation at STLE, MMKM, and RLAP.
    These stations still need to be steinerized: CVMS, MACC, HCES, MAIR, NWCC.

    MAIR is now connected directly to the Water District internet. We can recover the wireless hardware.

    James's May departure may be delayed til July.

    AG Network

    USGS provide RT147 accelerometers for all 6 stations. Two are installed (which ones). Need to install the remaining four as we visit the station (i.e. don't need to make a special trip).

    ARRA Upgrades

    Only GTTN remains. Tied to CPRT upgrade (see above) and awaiting comms permission.



    NSMP Station List.

    Due to remodeling, we pulled K2 1738 from Firestation #2 in Dyersburg, TN in February 2009. It is in the shop with accessories.


    The seisnet group on umdrive is at You will need your uuid and password.

    The pink palace display now includes a heli connection for MPHB. Need to retrieve any remaining hardare (e.g. antenna and reciever on roof).