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smart meters

Sep 30th 2012, 23:56

K1SCE

Joined: Apr 4th 1998, 00:00
Total Topics: 0
Total Posts: 0
Washington Electric Cooperative, Inc
Po box 8
East Montpelier, Vermont 05651 will be installing Smart meters withing the next few months in my town, Northfield, vermont.
These meters are using wired or power line carrier meter communications, on a 12.5 Kilohertz, between my meter and substation, where the signal is captured, and then delivered via private internet network.

Questions
1. should I be concerned with this 12.5 KHz (or harmonic) being transmitted via power line?

2. Are there any reports published, either negative or positive on these meters (12.5 khz) used in other parts of the country?

3. If there is interference how should I handle it to have it resolved asap?

contact person at Washington electric - Bill Powell, 802-223-5245

I can refuse to have the meter installed but would like to be fair to Wash elec, my neighbors and my self.
thank You
Jim Gricci, k1sce (email my call via arrl)
Oct 1st 2012, 12:10

WB1GCM

Joined: Apr 4th 1998, 00:00
Total Topics: 0
Total Posts: 0
Hello Jim,

The ARRL has a Smart Meter web page that has general information: http://www.arrl.org/smart-meters.

I have not heard of a system that uses current carrier at 12.5 kHz. None-the-less, smart meters fall under Part 15 rules , and thus, must not interfere with licensed radio services, such as the Amateur Service.



Oct 1st 2012, 14:46

w1rfi

Super Moderator

Joined: Apr 4th 1998, 00:00
Total Topics: 0
Total Posts: 0
At this point, we don't have any reports involving these low-frequency meters. More than likely, there is going to be sufficient filtering, as the 12.5 kHz signal needs to be pretty clean or it couldn't be used to transmit data. Please do keep me posted if you have any interference from these devices, as yours is the first report we've received regarding this particular smart-grid technology. Ed Hare, W1RFI@arrl.org.

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