[Lowfer] AC utility meter data signal

[Howell, Laurence J]

Looks awful - managed to persuade utility to remove my Turtle which gave pulses across LF with an analogue which is read Manually - more houses coming up nearby so I'm sure it will get worse. I am going to see if I can shunt some of it by decoupling using some 660VAC 13uF's - may get some complaints!

Laurence

----- Original Message -----
From: lowfer-bounces at mailman.qth.net <lowfer-bounces at mailman.qth.net>
To: Discussion of the Lowfer (US, European, &amp;	UK) and MedFer bands <lowfer at mailman.qth.net>
Sent: Thu Feb 10 20:45:21 2011
Subject: [Lowfer] AC utility meter data signal

I just uploaded a spectrum display of my utility meter transmitting it's 
data.  It appears most of the energy is around 4 kHz but the 
transmission can be heard well up into the AM BC band.  Maybe higher.  
I've been trying different antenna configurations trying to detect other 
meter transmissions in the area.  This evening I was able to detect at 
least a dozen.  Fortunately most are very weak.  Only the one on my 
house and another on my property creates significant QRM.

http://www.w4dex.com/misc/ac_utility_meter_data.jpg

Dex
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