Tech Staff Meeting Notes August 11, 2014

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

Duty Table updated June 2014


News & Highlights

Kent Moran gave a summary of the CERI Retreat last Thursday related to CERI becoming a department.

The annual CERI Photo and back-to-school lunch will begin at 11:45a on August 21.

Classes begin on Monday August 25.

NetOpsVII is canceled.

USGS seismic networks proposals are due at the end of the month. Mitch will distribute the one for CERI.

We discussed the current state of documentation and the need to make it more accessible to staff (while still keeping it secure). Steve will look into a wiki.

Some of the broadband stations have a fairly significant long period drift. There is nothing wrong with the hardware so presumably its vault or atmospheric. Jim will help prepare a summary of the issue and Mitch will ask someone at ASL to take a look and offer some advice on steps that could be made to mitigate the problem. Then we can have a better idea of what it will cost and whether we can afford it.

There are many loose ends. Jim is going to create trouble tickets for them to keep track.


Some newer radios fail in cold temps (e.g. EPRM, HOPT, SJBM, and WYBT). Replacements are in the works.

Install freewave serial reset at bb stations.



NOTE:  LVAR and TWAR came back up Sunday morning.

Misc Problem
BFAR- spikes see image
PWLA.EHE-drifitng see image

AG Network
FCAR.HNZ- spikes see image

All stations in MO were serviced and TN has been started. Note that LVAR and TWAR outages are likely kudzu and weeds.

Completed 3 ISIS3 upgrades on NMAD node and DLAR. Have 5 more to go.

MTAR needs a new well. Done.

MSAR has storm damage. Fixed (but down again).

GNAR needs better insulating berm.

GNAR/GSAR have networking problems. Needs a site visit.

NODE Tasks


Link to Wilder is stable. Need to order a dish.




Some work remains on the NMAD tower (e.g. a couple shakey preamps).

AZTN/HDBR: Jonah Merritt visited in July and will be back on Aug 18. Jim requested a lane closure so Jonah can see it first hand. After getting some config pointers from Jamie Steidl, Steve has recording at 200sps going. The freewaves don't have enough bandwidth to stream it real-time and the dsl is worse. Steve downloaded a complete set of 200sps data; need to go pick it up from AZTN with a memory stick.


Need to review and update the power systems in 218.

Richardson move.

The ABB is done.

The DBB will be done later this summer.


ISIS4. WMTN, LRVA, VHTN & CCNC are complete. CCNC now transmit to mttn. That completes the upgrades for stations in TN.

Need to replace the 24V regulators at power hungry reftek sites. CCRT, and ASTN are done, PMTN got a new PS when the new media converter was installed.

CCNC is not going through fgtn and instead repeats through ASTN. The 950MHz shot would work so it could be converted to digital.

We're still repeating CPRT through GTTN. It has a shot to Gibbs High School so we could transmit to there, remove all hardware from the lightning prone GTTN site, and move the Seymour fire station hardware to Gibbs High School.


A work order is in to upgrade the Athens DSL. Currently we're a 1.5Mbps download and about 350kbps upstream. The upgrade will increase to 3Mbps and 1.1Mbps.


Misc. Problems
BCRT.HNN - see image
CPRT.EHE - see image

The spikes at SWET are likely horses. Can we extend the electric fence to surround the station to prevent the horses from rubbing on it?

CCRT has a RT130S and we now have a repaired RT130. Because they're 40vpp the RT130S is better matched to trilliums. Mitch changed the CCRT dataless on 2014/142 and is reluctant to have numerous epochs from RT130/130S swaps. So lets leave it for now.

Repaired cable chews and critter damage at CPCT.

We seem to have excessive RT147 problems. Need to follow up with ASL. Mitch will call a meeting of the FDL committee and ask for possession of the K2's. Then we can have VLF transform them into episensors. These can replace the RT147's and end the merry-go-round of replacements.

GTTN was decommissioned. The hardware will be used to upgrade WSNC.

GFM needs to be moved to a more quiet and accessible site. Possible target for digital upgrade.


Pick up BHT hardware. Done.


Internet, accessibility, and high noise inducing RF requires we move the MGNC central receive. John presented several possibilities and investigated both the PSN digitizer and the Menlo Park system. We determined that eventually we'll need to convert all nodes to the Menlo Park system so that we can obsolesce XP. But for now, we need to reconfigure North Carolina as in this figure. Better figure. This includes:
Decommission RBNC
Upgrade WSNC to broadband or S-13/Reftek and cell modem. On Deck.
Rotate CCNC to repeat through fgtn and add to MTTN node. Done.
Establish new node at High Peak.
Transmit MGNC to High Peak.
Repeat TRYN through MGNC.
Transmit GFM to High Peak.
Transmit TVNC to High Peak.
Transmit SMNC to High Peak.

Initial recon at High Peak and meeting with Morgantown rep suggests this plan will work. Still waiting on the Morgantown permission.

Need to get breakouts that connect ISIS4 to both S-13 and L4. That way we can upgrade remaining PII stations to ISIS4 first, then later go back and replace the L4's with S-13's. In progress.


ASTN and PMTN would benefit from reconfiguring the basalts there to record continuous buffer in addition to the 100 sps rt data transfer.

PMTN needs a fence?


Next time each station is visited, need to note antenna model and serno for Smalley.

PTGV and PTGx need a new static IP. James made the request.

AG Network

CCAR- Had water in vault! Put on watch list. Next visit open Vault. Check all vaults on next routine service.

Have a new sm sensor for LCAR. Also need to fix a leak there.


Chris Powell is helping to update the equipment list.


NSMP Station List. All stations were converted to cell modems.


Clean out shed behind house0 to use as field storage.

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