There's your problem - dropping antenna gain

Boris Mohar <borism_void_@sympatico.ca> wrote:
> http://www.youtube.com/watch?v=cZkAP-CQlhA

Acorn bank ?

Greg
 
Boris Mohar wrote:
> http://www.youtube.com/watch?v=cZkAP-CQlhA

Maybe he liked 'em toasted.
 
On Sun, 27 Oct 2013 18:51:14 -0400, Boris Mohar
<borism_void_@sympatico.ca> wrote:

>http://www.youtube.com/watch?v=cZkAP-CQlhA

Cute. I frame grabbed the least out of focus section of the video.
I'm not certain but the uniform color of the nuts and oblong shape
seems more like peanuts in the shell, than acorns:
<http://802.11junk.com/jeffl/crud/acorns-or-peanuts.jpg>

Acorns:
<https://www.google.com/search?tbm=isch&q=acorn>
Peanuts:
<http://acenutrients.com/wp-content/uploads/2012/12/peanuts.jpg>

--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
 
"Boris Mohar"

http://www.youtube.com/watch?v=cZkAP-CQlhA
Click to expand...

** It's clearly a very dumb fake.

They're plainly not acorns, squirrels cannot change themselves into
woodpeckers and video cameras are not waiting when you discover a freakish
thing.

Pwned again.



.... Phil
 
On Mon, 28 Oct 2013 23:00:51 +1100, "Phil Allison" <phil_a@tpg.com.au>
wrote:

"Boris Mohar"
http://www.youtube.com/watch?v=cZkAP-CQlhA

** It's clearly a very dumb fake.

They're plainly not acorns, squirrels cannot change themselves into
woodpeckers and video cameras are not waiting when you discover a freakish
thing.

Pwned again.
... Phil
Click to expand...

Squirrels also need something made of wood to climb. They can move
across metal and wire structures, but can't climb a metal monopole
without something to sink their claws into. There's also no available
perch or foothold for the squirrel to use to maneuver from the antenna
mount to the front of the dish. If on top, it would just slide off to
one side. Much the same applies to a woodpecker.

Dropping acorns into a hole in the radome is not very clever as it's
unlikely that the squirrel or woodpecker can later recover the acorns.
Woodpeckers also pound their acorns into a hole, to keep them from
being stolen by the squirrels. The don't drop them into a hole.

Since the hole is about half way up the dish, a maximum of half the
dish will be blocked by acorns or peanuts. If half the dish
were blocked, that would only be a -3dB decrease in signal level,
which would be detectable, but well within the usual 10-20 dB fade
margin. Since the acorns or peanuts are absorptive, rather than
reflective, there would be little change in VSWR (reflected RF).

--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
 
On Mon, 28 Oct 2013 09:36:44 -0700, Jeff Liebermann wrote:

Squirrels also need something made of wood to climb. They can move
across metal and wire structures, but can't climb a metal monopole
without something to sink their claws into.
Click to expand...

Heh... The ones around my yard can climb a 40' Rohn 25 tower!
Last Winter I put some bird food (suet (sp?) with nuts, etc.) in a mesh
bag and lashed it to a rung on the tower about 30' up. I'd had failure
with trying to otherwise feed the birds and not have the squirrels take
it all.

By the 2nd or 3rd day they had spotted it, and within 4-5 days the
mesh bag was torn open and it was all gone.

Now to try it with a 6-10 foot yard arm at 30' -- up at a 50-60 degree
angle....

Jonesy
 
On 28 Oct 2013 23:17:42 GMT, Allodoxaphobia
<knock_yourself_out@example.net> wrote:

On Mon, 28 Oct 2013 09:36:44 -0700, Jeff Liebermann wrote:

Squirrels also need something made of wood to climb. They can move
across metal and wire structures, but can't climb a metal monopole
without something to sink their claws into.

Heh... The ones around my yard can climb a 40' Rohn 25 tower!
Click to expand...

They can wrap their paws around the 1/4" rod cross bracing on the
tower. The big wide (12" ??) monopole in the video is far more
difficult. Same with climbing into a small hole in the vertical face
of the radome.

Last Winter I put some bird food (suet (sp?) with nuts, etc.) in a mesh
bag and lashed it to a rung on the tower about 30' up. I'd had failure
with trying to otherwise feed the birds and not have the squirrels take
it all.
Click to expand...

I have a 3ft wide circular plastic platter sitting on top of a 1.25"
steel mast about 10ft off the ground. The squirrels and cats try to
climb it, or jump across from a tree, but usually fail.

By the 2nd or 3rd day they had spotted it, and within 4-5 days the
mesh bag was torn open and it was all gone.
Click to expand...

Oh well... nice try.

Now to try it with a 6-10 foot yard arm at 30' -- up at a 50-60 degree
angle....
Click to expand...

Squirrels can easily traverse a horizontal, or nearly horizontal pipe
or cable. The yard arm should be easy for them. Vertical is far more
difficult.

--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
 
In article <slrnl6ts4m.e7o.knock_yourself_out@vps.jonz.net>,
Allodoxaphobia <knock_yourself_out@example.net> wrote:

Now to try it with a 6-10 foot yard arm at 30' -- up at a 50-60 degree
angle....
Click to expand...

.... well greased.
 
On 10/28/2013 04:17 PM, Allodoxaphobia wrote:
On Mon, 28 Oct 2013 09:36:44 -0700, Jeff Liebermann wrote:

Squirrels also need something made of wood to climb. They can move
across metal and wire structures, but can't climb a metal monopole
without something to sink their claws into.

Heh... The ones around my yard can climb a 40' Rohn 25 tower!
Last Winter I put some bird food (suet (sp?) with nuts, etc.) in a mesh
bag and lashed it to a rung on the tower about 30' up. I'd had failure
with trying to otherwise feed the birds and not have the squirrels take
it all.

By the 2nd or 3rd day they had spotted it, and within 4-5 days the
mesh bag was torn open and it was all gone.

Now to try it with a 6-10 foot yard arm at 30' -- up at a 50-60 degree
angle....

Jonesy
Click to expand...

They do real well on my neighbor's (ugh) white vinyl fence.
 
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