yes for transmitter antennas, but not for receiver antennas in Austria
Germany Switzerland France Hungary one could have receiver antenna as
long as he want, but the height is limited similarly as in the US
73
KJ6UHN
Alex
On 5/10/2015 7:15 AM, Chuck Harris wrote:
My recollection is that
Is it driven as an inductive loop? That might put it under different
regulations.
On 11 May 2015 17:47, Chuck Harris cfhar...@erols.com wrote:
Yes, but in the case of the lawnmower fence, and the
invisible dog fence, the transmitter drives the fence
as an antenna.
In the US, the antenna
Hi
On most of these “buried” systems, the *intended* output is an audio ( 15 KHz)
signal. Since the carrier is below the bottom end of the regulations, you are
in “who
cares” territory. That’s the intent.
The problem comes from the fact that they modulate the carrier in ways the
reg’s
never
On 5/11/15 12:52 PM, Adrian Godwin wrote:
Is it driven as an inductive loop? That might put it under different
regulations.
On 11 May 2015 17:47, Chuck Harris cfhar...@erols.com wrote:
Yes, but in the case of the lawnmower fence, and the
invisible dog fence, the transmitter drives the fence
Yes, but in the case of the lawnmower fence, and the
invisible dog fence, the transmitter drives the fence
as an antenna.
In the US, the antenna size for free bands is seriously
limited. As an example, the so called Lowfer band at
136KHz is limited to antennas no larger than 15m in length.
Hi,
On 05/10/2015 01:11 AM, Attila Kinali wrote:
On Sat, 09 May 2015 12:15:47 +
Poul-Henning Kamp p...@phk.freebsd.dk wrote:
I spent some time capturing some data today.
The measurements is from my $20 loop-antenna in the attic, which is
something like 8 meters up and 10 meters besides
My recollection is that in the US, certain requirements
exist for antenna length on the so called free bands.
I have no idea what the European requirements might be,
but, perhaps they can be foiled by their allowing their
minuscule amounts of power to flow into an over length
antenna?
-Chuck
On Sat, 09 May 2015 12:15:47 +
Poul-Henning Kamp p...@phk.freebsd.dk wrote:
I spent some time capturing some data today.
The measurements is from my $20 loop-antenna in the attic, which is
something like 8 meters up and 10 meters besides the lawn-mower loop:
