Tech Staff Meeting Notes November 30, 2020
The top priority is always repair of down stations.
NM problem stations
ET problem stations
Funding for 2020DM is approved. It includes SLU adoptions and 8 NM analog station upgrades. Work is to be completed by June 30, 2021.
S5NC isn't very and needs surface thermal insulation (e.g. a bail of hay).
Data gaps persist. The start of the problem is coincident with SLU adoptions though we were already processing those stations in real-time so there aren't additional channels. James and Steve are investigating.
It was noted that better hotels have better COVID protocols but are above per diem rates. Can we get an exception? (e.g. standard rate in TN is $96 but the holiday in express in Dyersburg charges $112). Mitch will ask about a temporary increase.
COVID-19 protocols remain in place and include:
Data gap problems persists. James is working on the missed messages in the bofur and gimli import shared memory rings.
NM Broadband upgrades (replace refteks with centaurs) are complete except for HICK (no access due to crops).
SM upgrades (CMG5TD to etna2) are complete except for CSTN (no access due to coronavirus closures).
Remaining Refteks ready for Centaurs in NM are: PWLA, CLTN, and HICK. Cables will arrive Thursday so we can get to work on these as well as RDGT.
WALK needs to move, Dave has a new site selected.
SLU Adoptions are progressing. Next up is SIUC, CGM3, and PVMO. CGM3 will need a site visit. Remaining two adoptions are CBMO and PLAL. Mitch will ask Michelle about the 4 needed cell modems to replace SLU modems. The 2020 supplment is paying but they will eventually go onto the seisnet base.
NMDown
Down
BOAR.EHN
Misc Problems
CACT.EHE - drifting
BRNM.EHN - flat See image
The Cascadia for RDGT and Compact for PWLA are in house. The PWLA TC is returned from the Sparta deployment.
Make permanent, repair receive mast for WYBT at HOPT install four 52 watt panel.
DBB:
MKTA:
LNXT:
NMAD:
AZTN/HDBR:
CERI:
GE radios did not work well in the relay from fgtn to mttn so the link was replaced with 900M and caused interference at GRBT. We should not have similar issues for the remaining stations at HPNCthough the VHF there will require cavity filters. John found a school near TRYn that may host internet for us (TRYN is outside the Choctaw license).
Remaining Refteks ready for Centaurs in ET are: CPCT, BCRT, CMGA, DYTN, WSNC, SWET, and FPAL.
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.
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.
BCRT had an intermittent 40Hz spike.
ETDown
Down
CSTN
WSNC
TRYN
S5NC.HHN see image
Misc Problems
S5NC.HH see image
GMG.HN see image
STAR Node
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.
John will send the STAR SOH hardware to James to figure out how to send alarms.
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
Bob is now ready to get going on the 6 stations ready for Septentrio receivers. We'll try to get these done by 1/11/21 so it can go into his annual report.
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. This too is ready to go as time permits.
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 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
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.
