Tech Staff Meeting Notes August 6, 2019

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

Most of the meeting was focused on updating the Duty Table. Duty Table updated August 2019

Priorities

• Station repair and routine maintenance
• Clifton GPS mockup/training
• ISIS Training
• ET Digital Conversions, WMTN2 and ASTN

Please verify lat/lon with each station visit. Four digits past the decimal are required (~10m).

News & Highlights

Welcome new Res. Equip. Tech. Patrick Shiver.

NetOps will be Nov 4-5, see the webpage

Benz would like to install a posthole sensor as a test for a replacement of the NM analog stations. GLST/GLAT is a good candidate.

USGS funding is in place for our three approved Deferred Maintenance items.

• AQMS upgrade: replace obsolete AQMS systems with new redundant linux/postgresql developed at PNSN. GOAL: Linux/Postgres in production parallel to Solaris/Oracle by the end of August 2019.
• New transfer switch for NMAD and new resets for each of the NMSZ nodes
• 4 ET analog to digital conversions (6 channel) for GRBT, ETT, CCRT, and GFM. Three will stay shortperiod and add a sm. GFM will convert to broadband. Hardware will be Centaur DAS, Titan sm, and a Trillium PH for GFM. Hardware orders are in process now.

USGS will provide 2019 DM funds that will essentially replace all remaining older digital hardware.

GFM permission is complete.

Clifton GPS agreement is also complete

The Trimble GPS pods for some Guralps will be impacted by a gps week rollover issue on July 28. Will be addressed by DM 2019.

There was a discussion on the accuracy of station locations, particularly for older stations. A handheld garmin accurate to 4 decimals in degrees (about 10m) physically at the station is still the preferred method.

SIS

XP retirement. ET will be entirely digital by summer 2019 if all goes as planned. We need a plan for NM.

RTCC on Ubuntu 16 is able to get /parameters but fails with /status-control on loopback and RTPD hangs. It works in Ubuntu 18 but openvpn does not. Wait for that fix then leapfrog OS to 18.

A p-plant Contractor performed a detailed review of the two lieberts in room 218. The report is under review and a PO is being issued by p-plant to complete the repairs.

NMSZ

NMDown

There are 1 of 7 ISIS3 upgrades remaining (NHAR).

Make permanent repair receive mast for WYBT at HOPT install four 52 watt panel.

Strongmotion stations NAIT, SEAR, and NHIN are having trouble moving up the priority list. of the three, SEAR is most valuable. NHIN is probably a fuse but can wait until there is a new obisidian to replace the 5TD.

NODE Tasks

DBB:

MKTA:

LNXT:

NMAD:

AZTN/HDBR: Need to pull the 200' sensor at the weigh station. Probable water damage. There is no budget for this. Should we try to repair the sensor at MPHB and put it at HDAR2 (MPHB is over two decades old, possibly closer to three)? Should we turn off the HDAR2.*.20 channels until the sensor can be replaced?

CERI:

ETSZ

The upgrade at CCRT still has loose ends.

Conversion to Digital

We have 4 USGS funded upgrades, and will have 9 remaining under the Choctaw project. USGS deadline is 1/31/2020 so the Choctaw upgrades are the priority

Geobits are working well

DYTN and GRBT are using the new AMTS spectrum model with a single 50KHz channel. There is a power splitter on the radio at Star Mountain to connect two antennas and receive both stations, 6-c each, on the same channel. The web ui for the radios is a pig (use ssh instead) though it works well with the geobit web UI.

Replacement station for GTTN and RBNC needs a new plan. A cell modem would provide more options.

Need to remove antennas, coax, and any other hardware from the tower at Greentop. John and Chris will schedule a trip.

ETDown

STAR Node

BCRT had an intermittent 40Hz spike.

Move PMTN due to excessive noise and vandalism. John has a site and sent a draft MOU to Mitch. The University did not ask for changes and asked for the WMA director to sign first, its currently in Nashville for approval. A portable was installed and shows no surprises, it should a good quiet site.

HPNC Node

MTTN Node

GPS

New station near Clifton, TN is ready to install. Smalley will work with Dave and Patrick on the mockup. The mockup will be used as training. Telemtry will complicated and has to repeat at a Water Tower before getting onto public internet at a local school.

Eleven receivers for 2018 Deferred Maintenance arrived. But they consume significantly more bandwidth than the older receivers. Bob is attempting to get cheap radios that provide the bandwidth though the user interface is much less useful and will require more maintenance time. Proposals for new cooperative aggrements are due the end of August at which time more tech staff time will be needed in the GPS proposal.

AG Network

Z41A has a leaky vault. It will need to be replaced with a CERI style vault.

HHAR needs a bigger solar regulator. The new one should last a year.

FDL

The FDL wiki is here: https://umwiki.memphis.edu/display/FDL/CERI+FDL

MISCELLANEOUS

The seisnet group on umdrive is at http://umdrive.memphis.edu/mwithers/seisnet You will need your uuid and password.

The seisnet wiki is at https://umwiki.memphis.edu/display/CERITech/CERI+Tech You will need your uuid and password.