Tech Staff Meeting Notes September 8, 2020

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

Duty Table updated March 2020

Priorities

• ET analog to digital conversions
• Freewave replacements
• Remaining Reftek replacements
• Station repairs
• Preventive Maintenance (especially NM shortperiod)

Secondary Priorities
• CERI and STAR SOH monitoring replacement
• STAR camera config

News & Highlights

The annual CERI R&O meeting is September 21 at 2:30p via zoom.

Funding for 2020DM is approved. It includes SLU adoptions and 10 NM analog station upgrades. Work is to be completed by June 30, 2021. SLU Adoptions need to be complete by December 1.

COVID-19 protocols remain in place and include:

• Overnight trips are permitted. Avoid restaurant dining rooms and other areas where people gather. Maintain social distancing and wear masks when around people other than those you live with.
• Those who are able should continue to telecommute.
• The following are on the list sent to the college as essential on-campus: Brewer, Horton, Bollwerk, Steiner, Shivers, Marshall.
• Practice vigilant social distancing and hygiene at all times
• Inform Mitch of any telecommuting needs.
• USGS asked to be informed of any significant operational disruptions. They are our backup.

NMSZ

NM Broadband upgrades (replace refteks with centaurs) are complete except for HICK and LPAR (no access due to crops), and GNAR (IT issues at the school).

SM upgrades (CMG5TD to etna2) are complete except for SHTN and CSTN (no access due to coronavirus closures).

SEAR Etna2 is dead. Needs a site visit.

Remaining Refteks are PWLA, CLTN, and a few ET stations.

NMDown

The Cascadia for RDGT and Compact for PWLA are in house. The PWLA TC was loaned to the Sparta deployment.

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

NODE Tasks

DBB:

MKTA:

LNXT:

NMAD:

AZTN/HDBR:

CERI:

ETSZ

The GFM sensor was replaced and the noise is much better. But it is still noisy on the horizontals in the 0.1 to 0.08 band and the noise in irregular. The cable may still be tugging on the instrument. The tall trees may also be a factor though we haven't had consistent clear weather to test it. We are investigating the feasibility and ability to get a permit for a helicopter drop (600-1,000 lbs) to install a new CERI-style vault (the type used in our freefield strongmotion sites). We may be able to get assistance from the Guard if we go through TEMA. This is on hold. Mitch did not request it in 2020 DM due to travel concerns related to the pandemic.

GFM has a recurring power problem combined with poor cell coverage. This was repaired but weak cell signal remains. Need a booster.

CPRT needs new VPN creditials to connect to new server that replaced rhydra4. Currently udp is sneaking through on the reftek rdp but need the credential to make direct connections with two-way communications. Site access is under coronovirus restrictions.

Camera at Star Mt was replaced and the new one is working great. It needs some quality time with the configs to make it more useful.

ASTN-MTTN had antenna upgrades and the GE radios were replaced with Freewaves. It remains unclear why exactly the GE radios did not work though they appear much more sensitive to degraded signal strength. This links repeats 9 channels and MTTN has a lot of RF noise so the GE radios should be less problematic on strong links with a single station. We will try Zetawave radios there.

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

ETDown

STAR Node

John will send the STAR SOH hardware to James so I can figure out how to send alarms.

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

MTTN is next up for digital conversions. CCNC, VHTN, LRVA, and flat gap all need upgrades.

GPS

New station near Clifton, TN was installed the first week of December, 2019. There is currently no telemetry. The plan is to telemeter to a nearby water tower, then to a local community college on public internet.

Lake County upgrade hardware is ready to go.

NWCC needs a new receiver from Bob.

MAIR needs a new antenna. Probably best to just upgrade to a Septentrio. Need a receiver from Bob.

AG Network

FCAR has a borrowed T120. The FCAR sensor is in the test vault where Dave found secondary firmware image is corrupt. The manufacturer recommends returning the sensor to have the firmware upgraded (there are two copies to facilitate updates and failure recovery). If it goes back to the manufacturer, then the paperwork needs to be completed to "move" the spare from the lab to FCAR in the inventory.

WHAR can be put back on the local network.

FCAR telemetry upgrade needs to be mocked up and installed. We can then remoe the repeater.

FDL

FDL needs better battery storage (should be on contained platform rather than the floor).

FDL cleanup continues. Rather than obsolesce the old mk2/serial fire-wire CMG6TDs, we'll put them in long term storage instead (fdl attic, mcgoldrick garage attic, or house 3 cedar closet are all good candidates).

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.