From efh@efh Mon Nov 01 16:09:31 1993 Received: from efh by mt with SMTP id AA29862 ; Mon, 01 Nov 93 16:09:31 EST Date: Mon, 01 Nov 93 16:05:55 GMT Message-Id: <114510@efh> From: efh@efh (Ed Hare - KA1CV) Reply-To: efh@efh To: mt@mt Subject: \public\info\tis\fence.txt Info on Interference From "Hidden Fence" Several members have reported interference from a new product called the "Hidden Fence." This product uses a VLF transmitter, a large perimeter loop, a receiver on a dog collar and a shock device to help teach a dog to remain within your property lines. Earlier versions of this were marketed without FCC approval and may generate interference to much of the HF band. The interference is characterized by a pulsing harmonic (like CW dits) every 35 kHz or so. I contacted the Hidden Fence Company and was told that a "suppressor kit" is available free of charge. When you call, it is a good idea to ask for "Cheri" because others may not know about the suppressor kit. The ARRL RFI desk (that's me!) is looking for any report from someone who can verify that this suppressor kit is effective. Contact me here at HQ by phone, letter or email (ehare@arrl.org). Hidden Fence Pet Containment, Co. 1725 NW 33rd St Pompano Beach, FL 33064 (305) 972-6791 (305) 972-9833 (800) 226-4896