Tech Staff Meeting Notes April 3, 2017

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

Duty Table updated June 2014


News & Highlights

Fish Fry will be Friday May 5, Cinco de Mayo. Cost remains $6.

Arch asked about updating the signpost outside the middle house.

Cool site with info on the August eclipse is at

We had a discussion on ISIS3 upgrades. There are 13 remaining ISIS stations in the MKTA node that would cost ~$31k to complete. Mitch asked if we would be better off using that money to convert them to RaspberryShake. A 3-c RasberryShake is $1k ( Of course we'd also need telemetry. Jim suggested adding just a raspberry pi to our existing geophones much like a collegue in Argentina has done. He will email to get particulars. How many stations can actually make the 900MHz digital telemetry shot? What is the power consumption?


ET and AG are done.

NM is in progress.


GX620 at mttnworm needs to be visually checked. All others with "puffy caps" have been repaired. We have five spare motherboards.


Data taken from: /gaia/smeagol/dat2/Working/NM/201703/20170319_142442_MAN

NM Down

Misc Problems
BOAR- spikes
CPAR - " see example image
LVAR - "
TYAR - "
BACM - "
BRNM - "
HBAR- ? see image

AG Misc Problems
X601 - spikes

Low solar dropouts have several different sources though common problem is an extraordinarily overcast January. Other factors include mis-wiring, ISIS3 xmiters draw more power (so need more solar), AGM's have problems with low power charge, etc. Jim's spreadsheet shows 9 stations that need an upgrade, 10 on the edge, and 13 that need to be checked.
Need to accomplish this task as we visit each station for the annual PM.

Need a site for MORT2.

There was an email discussion on the history of OXF which led to digging up the MOU from 1993. Mitch checked with Dave Wilson at ASL and it may be possible to replace the MOU, which is endorsed at a fairly high level within USGS, with a "station agreement" which is less formal.

I40 Bridge comms.
The Afar radios from Jim Smith work well. We'll need two access points at the Law School connected to a pair on the bridge. The DAS's on the bridge will communicate with each other under the bridge. The access points automatically balance the load between the two.

The spectre routers have a relatively short character limit for url's. But when you change a config using the web interface with the obsidians, they try to resend the entire configuration using a url and its gets truncated when coupled with a spectre router. So make sure the configs are correct because it requires a site visit to change them.

NODE Tasks

All nodes are due a firmware upgrade that will sufficiently change things such that the the initial upgrade and configure should be done at CERI, then swap hardware at the node. This will be done as machines are replaced.

DBB: DBB upgrade is complete to LNXT. Hardware is mocked up for the last link to NMAD. It seems to do much better during Thunderstorms. We have a box of 30 aironets in various stages of repair. The goods are worth about $30. There are no antennas. The consensus was to put the good ones in a box and store them and recycle the others.


Replace siding on equipment hut.

Property at MKTA node will possibly be sold. Chris is looking into to it to make sure we can retain our presence.

Getting interference at the node causing spikes in CPAR, LVAR, LRAR, and TYAR.



Turn off the heater at the node.

AZTN/HDBR: Need to pull the 200' sensor at the weigh station. Probable water damage.


Flooding in the expansion space has become a problem. A Workorder was submitted and P-plant engineers were on-site to assess the problem. The most likely solution will be a retention wall and removal of material to make the foundation above grave. There are several open work orders. Jim will make a prioritized list and speak with zone supervisor.


Need to schedule three primary ET trips for spring-early summer.

Replacement station for GTTN and RBNC being evaluated and permissioned for Southern Highlands Science Learning Center at Purchase Knob (MaggieValley), a part of the Great Smoky Mountains National Park. Noise study picked up compressor noise from a nearby air quality station. John has the hardware to isolate the compressor. Take a CMG6TD and test to see how much the noise is reduced. No need to do a full noise test, just look for the compressor.


It's been too quiet to really see problems on most of the strong motion stations.

Data taken from:


Misc Problems
MGNC.EHZ see image
CPCT.HNN see image

CPCT had the RT147 replaced but still has problems. Possibly a bad cable or connector.

GMG has had a power upgrade, new batteries, new solar contoller, and better surge suppression. And it still went down on 1/18. James can get to the radio at the station which is on a separate power feed than the reftek. Jim will send a new BC10 and John will investigate.

John's updated todo list .

Spikes at CVVA most likely originating at flat gap.


Improve RCGA AC power and perform maintenance work on shed.

Move PMTN due to excessive noise and vandalism. The trees at Lone Mountian are too tall to get a signal out. Looking for an alternate site.


HPNC node is up. Need to fix Win7 to allow earthworm commands (e.g. status, restart etc) from the ssh command line. 9 channels(GFM, MGNC, and DSNC) are being exported over a cell modem temporarily until internet is established. Competion of fiber and supporting hardware should be done, we're told, by late April. Need to add the node end of the radio link for GFM2.

GFM2 is good to go. It will be a reftek with S-13's. Do we need to take student volunteers to help with the GFM decommission?


WMTN pit needs to be moved due to erosion.

CPRT comm reconfig. John says, "CPRT is going through the Senior Center at Corryton (cort). We removed everything from svfd an everything but what is on the tower at gttn. cort is indeed using dynamic addressing but data is flowing. Greg Hill the director at the senior center is supposed to be contacting his IT person to see what can be done. I left a message for Greg last week but still haven't heard back. I want to get Greg's IT guy in direct contact with either Steve or James so they can figure it all out."


CVMS has intermittent connection problems with wireless. Its hardwired for now but the wireless needs to be replaced to preserve electical isolation between the building and vault.

AG Network

X40A upgrade to AG standard is complete. Still have U40A and Z41A to do. U40A is on deck.


Needs some clean up.

The FDL wiki is here:


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

The seisnet wiki is at You will need your uuid and password.