Hi Tony,
I have a lot of experience with invisible fence transmitters, and I even
reverse engineered (decoded the 8 bit code my transmitter sends) and then
designed and built my own in case my purchased one ever dies. For my
purchased transmitter I had to make my own low pass filter using some radio
shack snap on RF choke Frames (part number 273-0104), and would be glad to
sketch up my filter if you can't resolve the problem another way. I
installed my invisible fence transmitter loop antenna wire above ground
along the top of my vinyl coated chain link fence, and it is not far from
my 160 meter TX vertical or my 3 small receive pennants (30 feet or less).
The problem I had was that my dog was jumping over my fence, so I installed
the transmitter loop wire at the very top of my fence and turned the power
way down so my dog would only gets a correction if its collar gets within a
foot of the top of the fence (this fixed my problem while still allowing my
dog full use of the yard). Having the loop above ground is a worst case
condition, so very pleased that I was able to rid myself of the
interference using the above mentioned choke. One of my next door
neighbors has the identical transmitter I have but it is underground and
about 10 feet from my property line and I have no problem with his system.
Also another next door neighbor has a different brand transmitter (probably
similar to your neighbors), and I don't have any problem from his system.
It looks like the transmitter you are talking about is made by a company
called Radio Systems Corporation, and they are a big player. The unit you
have is part of their Pet Safe brand. They also have another brand called
Innotek (which is the brand I have experience with).
Some models have a transmitter output power level control, but other models
have a fixed output level.
I suggest you call Pet Safe and discuss the problem with them on the phone
and see what kind of help they can provide (their on line technical support
line is very friendly). Their phone number is 1-866-738-4379. It sure
would be nice if they sold a filter, but this is something I have never
discussed with them. If you hit a dead end let me know and I will sketch
up my filter design for you.
73,
Don (wd8dsb)
On Thu, Jan 28, 2016 at 2:28 PM, N2TK, Tony <tony.kaz@verizon.net> wrote:
> Next door neighbor installed an ICT-801 Invisible Dog Fence.
>
> It is supposed to run at 7KHZ. But it is sure strong on 160M and to a
> lesser
> degree on 80M. The buried wire is about 10' from my inline verticals for
> receiving. But I can also hear it somewhat in a Pennant that is about 30'
> away. I can hear it as hash (but not loud) up to 15M when pointed in that
> direction.
>
>
>
> Does anyone know if this is normal for these units to put out so much
> noise?
> Does ferrite on the wires from the unit to the buried wires and the battery
> backup unit help at all? Before I ask the neighbor if it is okay to try
> some
> ferrite snap on cores I wanted to ask here if anyone has had success
> cleaning up this thing.
>
>
>
> 73,
>
> N2TK, Tony
>
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