Digest for sci.electronics.repair@googlegroups.com - 9 updates in 3 topics

Arlen Holder <arlen_holder@newmachines.com>: Oct 05 12:59AM

> would bother more of them. Some are pissed at how many Ring cameras
> are in the neighborhood. A black helicopter has them hiding under the
> bed. ;-)
 
You must live in my neighborhood! :)
 
You bring up two important issues:
a. Power at the remote site 800 feet away, and,
b. The Fresnel zone of a pole only six feet tall
 
You can look up the Fresnel zone stuff separately, which, in my experience,
is more theoretical than practical since you just shove more directional
beam power to overcome the losses due to lack of height.
 
Power is an issue.
 
I'll ping "alt.internet.wireless" & "sci.electronics.repair" with this
post, who may be able to assist you more so than I can in how to set up the
power (be advised to ignore the three infants on s.e.r if they respond).
 
What we do here in the Santa Cruz mountains, where the zoning is 40 acres
per household, is "bucket routers" which are simply routers plugged into
anything we can plug them into, between homes when we need to clear
obstructions to our Line of Sight (LOS) WiFi transceivers.
 
But your suggestion of solar seems far better than bucket routers.
--
A "bucket router" is just a router under a bucket for weather protection.
Fox's Mercantile <jdangus@att.net>: Oct 04 08:51PM -0500

On 10/4/20 7:59 PM, Arlen Holder wrote:
[ nothing of any importance, as usual ]
 
Piss the fuck off.
 
 
 
--
"I am a river to my people."
Jeff-1.0
WA6FWi
http:foxsmercantile.com
Arlen Holder <arlen_holder@newmachines.com>: Oct 05 01:57AM

On Sun, 4 Oct 2020 20:51:21 -0500, Fox's Mercantile wrote:
 
> On 10/4/20 7:59 PM, Arlen Holder wrote:
 
> Piss the fuck off.
 
As always, Fox's Mercantile (aka Snit) proves he's an infant.
o Let's see if the other two infants on s.e.r show their colors
Fox's Mercantile <jdangus@att.net>: Oct 04 08:59PM -0500

On 10/4/20 8:57 PM, Arlen Holder wrote:
 
>> Piss the fuck off.
 
> As always, Fox's Mercantile (aka Snit) proves he's an infant.
> o Let's see if the other two infants on s.e.r show their colors
 
Like I give a fuck what you think.
And I ain't Snit.
 
 
--
"I am a river to my people."
Jeff-1.0
WA6FWi
http:foxsmercantile.com
"pfjw@aol.com" <peterwieck33@gmail.com>: Oct 05 03:53AM -0700

The cross-posting troll is back!
 
Please do not feed the troll!
Fox's Mercantile <jdangus@att.net>: Oct 05 06:06AM -0500

> The cross-posting troll is back!
 
> Please do not feed the troll!
 
But it's so much fun.
Because he gets his panties in a really tight wad.
 
 
--
"I am a river to my people."
Jeff-1.0
WA6FWi
http:foxsmercantile.com
Arlen Holder <arlen_holder@newmachines.com>: Oct 05 01:33PM

On Mon, 5 Oct 2020 06:06:54 -0500, Fox's Mercantile wrote:
 
> But it's so much fun.
 
The second infantile troll on s.e.r, as predicted, proved me right.
o pfjw@aol.com (aka Diesel)
 
What I find always enlightening is how worthless these trolls prove to be.
o These 3 trolls don't have a purposefully helpful bone in their bodies
1. Snit (aka Fox's Mercantile)
2. pfjw@aol.com (aka Diesel)
3. ... (we're waiting for you)...
 
None have ever posted in their entire lives, anything of any value.
o Any thread with them is 99% their trolls, and nothing of value.
--
They're basically children who post on s.e.r for their own amusement.
jaugustine@verizon.net: Oct 05 07:26AM -0400


> I found light settings where you can turn off Daylight Running Lights,
>Wiper (when it rains) Lights, when you lock you vehicle, but there is
>NO setting to disable headlights turning on when you open the door.
 
UPDATE:
 
Reply (email) from the Jeep dealer, "there is no way to disable that
feature".
 
John
Jeff Liebermann <jeffl@cruzio.com>: Oct 04 10:09AM -0700

>pair of yagis on a hilltop for a client who had no reception at
>all in his house which was located on the blind side of the hill.
>It worked somewhat but was not really satisfactory.
 
Passive repeaters like that don't work. For example, let's take an
over simplified situation.
 
This is for a direct path (no repeater) between the TV station and the
receiving antenna. UHF 14 channel at 500 MHz. 10 mile path. 12 dBi
antenna gain on the receiver end.
<https://www.proxim.com/en/products/knowledge-center/calculations/calculations-free-space-loss>
The 10 mile path produces a 110.6 dB path loss at 500 MHz. Add the 12
dBi antenna gain and the station to receiver path loss is:
110.6 - 12 = 98.6 dB loss
 
Next is with a passive repeater installed at 9 miles from the TV
station and 1 mile to the receive antenna. At the 9 mile point, there
are two back to back 12dBi UHF antennas. This splits the calculation
into two parts (9 miles and 1 mile). Note that there are three 12dBi
antennas involved:
 
The 9 mile path has a loss of 109.7 dB. The first 12dBi antenna
reduces the 9 mile loss to:
109.7 - 12 = 97.7 dB loss
The 1 mile path has a loss of 90.6 dB. The 2nd and 3rd 12dBi antennas
reduce the 1 mile loss to:
90.6 - 12 -12 = 66.6 dB loss
The total end to end loss (including the three 12dBi antennas) is:
97.7dB + 66.6dB = 164.3 dB path loss
 
164dB is a *MUCH* larger path loss than the original direct path of
98.6dB even though it includes the gain from 3 antennas (+36dB).
Specifically, the direct path signal through such a passive repeater
arrangement would be:
164.3 - 98.6 = 65.7dB
or about 4 million times stronger (in terms of power gain) than the
passive repeater derangement. This is why you don't see many passive
repeaters, passive cell phone boosters, or flat panel reflectors, in
service.
 
>house with literally an aluminium coat hanger plugged into the
>antenna socket. By contrast, I could watch the 1990 FIFA World
>Cup only with an array of four yagis *and* an antenna booster.
 
1990 was before repacking and DTV (about 2009), so that wouldn't
explain the signal loss. What seems odd is your "slowly but steadily
degraded". That seems like some kind of TV receiver problem,
mechanical problem (squirrel chewing coax, water in the coax, antenna
rot), that gets worse over time, rather than a sudden change. Were
the neighbors experiencing the same problem with the same station? Are
you on a shared community or building distribution system? Were you
listening directly to the unspecified TV transmitter, or were you
listening to a station owned UHF repeater?
 
 
--
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
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