3603 REJILLAS
SAN ANTONIO, TX 78228-2738

Hello,

The radio interference that I was trying to locate last Dec 18 in your
vicinity went away a few days into the New Year, but has since resumed at
almost 24/7 since Mar 31, 2012.  In my 40 years at this location I have
never before experienced so intense an interference of such a long-lasting
nature.

I hope that the SAPD satisfactorilly explained what I was attempting to do
back there.  I'd left there (leaving my name and address) believing that it
had all been well understood by both you and Mr. Mario Salas, so was greatly
surprised that the SAPD had suddenly becomed involved in this matter.

Since that time I've acquired some additional equipment to enable better
localization of this interference source.  The latest results using that can
be seen from the figure near the bottom of this Web page (which also recaps
the entire situation) http://www.qsl.net/wa5iyx/RFI_2011-2012.htm
(http://www.qsl.net/w/wa5iyx//images/ne-bearing-ac.jpg)
Also, on June 18th I obtained the assistance of another licensed operator,
K5AUW, and his findings are highlighted in blue near the bottom of that page.

At this point all the indications are for a source on your premises (internal
or external).  Any more precise determination of this source requires added
cooperation involving some access beyond the public street/sidewalk area.
The possible devices that could be causing this are wide ranging - including
(but not limited to) plasma TVs, satellite receivers, computer equipment,
pool pump, battery chargers, lighting, security systems, HVAC system motors,
and so forth.

Even not knowing what the device is at present, its gross malfunctioning like
this could still very well present a definite risk of electrical shock or a
fire hazard.  Depending of the policy of the manufacturer of the device,
they may offer repair/replacement of the device under warranty.

Additional information regarding locating and treating radio interference
from such devices can be found on these sites
     a)  www.arrl.org/information-for-the-neighbors-of-hams
     b)  www.rfiservices.com/tips.doc

Thank you,

Patrick J. Dyer
WA5IYX

pjdyer@swbell.net
435-9986
5315 Silvertip Drive
San Antonio, TX  78228-2744