[Lowfer] AC utility meter QRM on LF

[Johan H. Bodin]

Dex,

your Landis & Gyr meter has a TWACS communication module. TWACS is a PLC system
designed by Aclara Power-Line Systems Inc.

  http://www.aclara.com

There's a lot of marketing bla bla on the site, I doubt that you will find any
technical information there but you may find some info' in patent documents. For
example U.S. patent 7,733,245 and patent application 20100054349.

Another horrible example, 35 million units in France:
http://meterpedia.com/mwp/2009/09/07/plc-standard-for-france-revealed-by-erdf/

The days of quiet LF bands are over... :-(

73
Johan SM6LKM

Dexter McIntyre W4DEX wrote 2010-10-06 19:05:
> http://w4dex.com/temp/ac_utility/utility_meter_landisgry_focus.jpg