Tech Staff Meeting Notes March 2, 2023

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

Duty Table updated March 2020

Priorities

• station repair see NMDown and ETDown
• Test PARI internet
• fgtv power upgrade
• 2022 DM
• Preventive Maintenance

News & Highlights

The exceptionally wet winter is continuing into spring and making field work very difficult. If it keeps up, we'll start bumping into planting season (though it will be difficult for landowners to plant if its this wet).

2023 DM request is in progress.

Fish Fry will be May 5.

Don't forget your effort certs. They are every month now. Michelle will tell us when she's reviewed them.

This is from January but remains as a placeholder. Discussion on the ABB channels. We now have 12 NM sp digital stations contributing to automatic locations. The new postgres AQMS system has trouble with non-standard seed channel names (specifically, the waveform_gifs in the DRP). Should we just close those channels? Yes, though we still need mudworm to digitize EBZ and SFTN. EBZ can be closed but SFTN can not. Need to coordinate with Holly and decide when to turn off the ABB--we should likely have a few more digital stations first.

NMSZ

Discussed NM digital upgrade plan What to do about stations that need major work but are to be closed as part of the plan. Need to have a prioritized list of station upgrades and target the ones near problem stations first. So that as we do the uprades, we can close those nearby that are scheduled to be closed.

2022 DM. SFTN hardware is mostly ready, waiting on an enclosure but can get started before then. Got the wrong cable and a bad Titan for X40A and waiting on replacements. The others, WLAR, U40A, and Z41A are all built up and ready to go. Just need a break in the weather.

HOPT2 needs an antenna upgrade at the node receive. So do PENM and PGVM. Eventually all node 900MHz antennas need an upgrade to allow sharing digital bandwidth. Adjusted the azimuth of the HOPT2 antenna which will hopefully help in the mean time.

We operate 18 cell routers and there are seven remaining upgrades to FirstNet. There are 3 in ET, 3 are the AG DM 2022 upgrades and the other is the GPS monument SCCF in Clifton, TN. These are all configured and ready to go. Weather is making it difficult to access stations.

WYBT was orphaned by the HOPT2 digital upgrade. James will close the hardware epoch in SIS and leave the station open for now until a final decision is made on the digital network configuration (i.e. when we decide how many and which analog stations are closed).

2021 DM ISIS5 upgrades are complete. Two loose ends remain:
Decommission CWPT. TMAR, LRAR & MTAR

Note, there are still 3 ISIS2 stations, TMAR, LRAR, and MTAR, and we now have spare ISIS3 canisters. Should they be upgraded or wait until the digital plan is finalized? (recall ISIS2 suffered from the bad ground a the bottom of the canister.)

Replacement batteries are in house for DBB nodes at Wilder, MKTA roof.

MPHB continues to hang; it's an old serial to inernet DM24 system. The sensor hasn't been calibrated in three decades and has been in the borehole for nearly two of them. It is not being archived at IRIS and there is no metadata (Mitch has the original Guralp documentation though it is likely no longer accurate). We discussed whether to turn it off. It doesn't cost anything though isn't useful either. It is a nice borehole in a very noisy location so also not particularly useful from a monitoring perspective. It can be obsolesced as time permits.

WALK needs to move, Dave has a new site selected.

STAM needs to move. Landowner is prepping a new site for us.

HOVM has telemetry interference at the Luxora repeater. No good workaround. Convert it to digital. Done, got Centaur, I5/titan upgrade Oct 2022.

Both UALR pipe vaults were full of water. Will replace them with a CERI style surface vault.

NMDown

QUAR needs a tower.

NODE Tasks

DBB:

SFTN needs improvements in backup power. Line power is supplied by the no-longer occupied residence owned by the University. We hook in at a circuit box in a nearby shed. Need to add more battery and solar to last up to a week. Funded with 2022 DM. Need to purchase the hardware--the clock is ticking and June is sooner than we think.

MKTA:

LNXT:

Generator is due for a service and load test. Do this in February to put it in the new budget year. We'll do the routine maintenance now and have Cummings do a load bank test later this year. Checked the maintenance records and Cummins made repairs w/load bank test in Sep 2021. Unless there's a problem we were planning on a load bank service every 24 months. 2022 was first year since 2012 we didn't spend $$ on the generator. 2012-2021 total was $29,372.51 or an average of $2,937/year

NMAD:

AZTN/HDBR:

CERI:

ETSZ

MGNC needs more solar and a new antenna. Done, may need even more solar.

Need to test the internet at PARI. Have an ip and everything we need to test.

RCGA needs to move. John found a City Park in Chattannooga that is a former ammo dump. He's trying to get a permission to do a noise study to relocate the station into one of the bunkers. The city is willing to let us use the park internet. This lead is a bust, looking for a new location.

fgtn needs a solar upgrade. Built up and ready to go. Waiting on a break in the weather.

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

Five faulty geobits sent to ISTI. Did we get these back? Yes, John put the bill on his card.

ETDown

CVVA may need a cell modem.

STAR Node

DYTN owners are allowing us to stay. They asked for a load of gravel for the access driveway.

The Dalton link is dead and we're currently using a cell modem. The cell modem is doing a very good job but we still would prefer to use it as a backup not primary. Long story short, Dalton thinks their stuff is working and correct but we still can't connect. Discussed options but the Dalton link is still the best option so need to figure it out and make sure what they have configured is the same as what we think they have configured.

John will send the STAR SOH hardware to James to figure out how to send alarms. If this isn't in production soon, we're going to bail and get something off the shelf. The GX620's need to be retired. What is the status of this? It's almost there.

Move PMTN due to excessive noise and vandalism. The new site, CATN, is permitted and ready to install.

HPNC Node

WSCN noise appears to be a local source not telemetry; appears to be a pump-like source. We would like to identify the noise but it is a heavily used repeater site for multiple parties. There may be nothing that can be done. It's a good enough station that we may need to just tolerate it if a source can't be identified and mitigated. If it is a pump could we offer to pay to base isolate it?

MTTN Node

Move the atom to the host's rack and remove our rack.

VHTN seems to eat sensors. There isn't a pattern in needed repairs.

GPS

PIGT is down. Can get to the web page but it's not populating due to no data from the receiver. Have a cable analyzer to help troubleshoot.

AG Network

see note above on 2022 DM for four remaining AG centaur ugprades.

FCAR T120 has to go back to nanometrics. But the new T120 also has excessive long period drift. Both the datalogger and sensor have been ruled out. Jim will get a cable to swap it out. Could still be an issue with wiring and power. Cables are on backorder.

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.