Amateur Radio Public Seismic Network

Progress Log

Note: I use JavaScript (located via page source and available) to round picture corners on other pages at this site.

If this picture () does not present itself correctly, part of the JavaScript in your browser is broken. (fwiw) The broken image will now allow one, with broken JavaScript, to see all images, sans rounded corners.. Firefox is a free browser, for most platforms, that will fix this problem, and available from mozilla.com

Text size can increased/decreased using + and - keys, while, on a PC: pressing and holding control key and on a Mac: pressing and holding command (Apple) key.

200907.03

I moved the VolksMeter sensors off-line because they no longer pertain to ARPSN and will be used in another experiment, along with some equipment I have constructed.

I am working on a second site (ARPSN-2), that aligns with ARPSN-1, which has a massive, extra thick, slab with eight inch concrete walls, and on a new personal seismic electronics lab, which will be used to cross reference ARPSN-1 and personal seismic data.

I have been working on the missing "White Paper" and hope to finalize this project before the end of 2009.

200905.05

It has been a while since I posted any progress and here is why. We ended up without having a winter again; which means, I never had an opportunity to sit down and get any computer or paper work done.

On March 30, 2009 N6ECT-1 ARPSN APRS celebrated one year of continuous operation.

On April 4, 2009 ARPSN-1 Seismic Data celebrated one year of continuous operation.

Annual Equipment Report Card
All Equipment Was Purchased by N6ECT - No Free Equipment Here

Kenwood TM-D700AG - B

Comet GP-9 - A

VolksMeter II - 2RU sensors - A

Mark Products L15B sensors - A

Davis 6152c (cabled) Weather Station - A

HP Vista Laptop - D

http://flyingsnail.com/AmateurRadio/equipment.html

Following APRS links - A

http://www.findu.com/ -- http://www.norcalaprs.net/

Comments

I gave Kenwood's TM-D700AG a "B" because of (what I call) 'phantom transmit'. This radio has the most recent update, and has been in continuous operation, without 'down time', for over a year.

There is no microphone plugged in, there is no computer plugged in, all instructions entered into the D700 are continually verified, and I manually transmit one packet a day, using the Beacon (BCON) Button.

During the past year I have observed the D700 transmit my beacon, by itself, with no other activity going on, and (fwiw) since it is an ID, and maybe happened +/-20 times, I ignore it.

The Comet GP-9 antenna is quite incredible, but (imo) overkill for my QTH. I run low power and when conditions are excellent, bring up more than one repeater.

It is my intention to move N6ECT-1/ARPSN-1to a J-pole or mobile whip and use the Comet for emergency disaster communication or another project I have in mind.

A full, consecutive, progress log is available for viewing here:
Progress Log: Complete

There are some things that need seriously to be clarified concerning theory of seismometers, since there is so much confusion; not only among amateur seismologists, but also even many professional geoscientists.

Ultimately, the ONLY source of seismograph excitation (no matter the instrument design) s ENERGY. Additionally, the ONLY thing that delivers energy to the seismometer is Earth's ACCELERATION at the site of the instrument. This is true not only for the instrument's response to earthquake waves whose periods are shorter than about 300 s, but also for earth 'hum' in which the instrument responds mainly to tilt, when the periods are greater than about 300 to 1000 s. - Dr. Randall D. Peters - http://physics.mercer.edu/

ARPSN-1 Alerts are intended to begin at >= 5.0 magnitude in our (as of now, undefined) local area and the VolksMeter will cover teleseismic and LFE (low-frequency earthquake) events.

---

Previous Logs

200803.30 - 200804.01 - 200804.03 - 200804.04 - 200804.05 - 200804.07 - 200804.09 - 200804.10 - 200804.12 - 200804.13 - 200804.14 - 200804.15 - 200804.16 - 200804.17 - 200804.20 - 200804.23 - 200804.24 - 200804.28 - 200804.30 - 200805.01 - 200805.05 - 200805.07 - 200805.12 - 200805.13 - 200805.15 - 200805.19 - 200805.20 - 200805.21 - 200805.22 - 200805.26 - 200805.30 - 200806.04 - 200806.06 - 200806.10 - 200806.18 - 200806.21 - 200807.08 - 200808.06 - 200808.20 - 200808.27 - 200809.14 - 200809.18 - 200809.22 - 200809.26 - 200809.28 - 200810.06 - 200810.09 - 200810.20 - 200810.29 - 200812.10 - 200902.18 - 200905.05 -

---