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Guest

Sun Mar 10, 2019 12:45 am   



http://tinyurl.com/y6ap9tv3

Computer Nerd Kev
Guest

Mon Mar 11, 2019 2:45 am   



Je?us <j_at_j.net> wrote:
> http://tinyurl.com/y6ap9tv3

"Buzzer system could be to blame for Perth carpark mystery"
- https://www.9news.com.au/2019/03/10/16/45/perth-news-pharmacy-buzzers-blamed-for-keyless-carpark-mystery

A device simply shorting out could also cause enough RF noise to
block the keyless entry transmissions, though over a much smaller
area. Perhaps also industrial equipment using high voltages where
some shielding has come adrift.

I imagine there are a lot of cases involving one or two cars, but
to cause enough chaos to get a news report you probably need
something that's actually designed to transmit RF, or at least
happens to be in contact with something to act as an antenna
(electric fence zapper gone wrong maybe?). The paging system sounds
very likely.

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#_ < |\| |< _#

Taupe
Guest

Tue Mar 12, 2019 12:45 am   



Je腜s wrote:
> http://tinyurl.com/y6ap9tv3

I had Digital TV interference couple weekends ago & am still at a loss as
to what it was.

I use an internal TV aerial, & noticed the TV signal cycle though form 99%
signal strength to 25-30% .

The TV would go from pristine vision to freezing & pixilation, it was
annoyingly unwatchable.

I spent few hours re-arranging TV aerial to fix the problem but didn't work.

I had a set top box, & noticed the interference didn't happen on that, so I
switch to using tuner on set-top box rather than TV .

Problem has now gone & I can use tuner on TV again!?

I wonder are people importing 'electronic devices' without checking , that
are not suited/ don't comply with Australian standards & interfering with
our broadcast spectrum?


Guest

Tue Mar 12, 2019 3:45 am   



On Mon, 11 Mar 2019 00:48:19 +0000 (UTC), not_at_telling.you.invalid
(Computer Nerd Kev) wrote:

Quote:
Je?us <j_at_j.net> wrote:
http://tinyurl.com/y6ap9tv3

"Buzzer system could be to blame for Perth carpark mystery"
- https://www.9news.com.au/2019/03/10/16/45/perth-news-pharmacy-buzzers-blamed-for-keyless-carpark-mystery

A device simply shorting out could also cause enough RF noise to
block the keyless entry transmissions, though over a much smaller
area. Perhaps also industrial equipment using high voltages where
some shielding has come adrift.

I imagine there are a lot of cases involving one or two cars, but
to cause enough chaos to get a news report you probably need
something that's actually designed to transmit RF, or at least
happens to be in contact with something to act as an antenna
(electric fence zapper gone wrong maybe?). The paging system sounds
very likely.


And indeed it was the cause:

"Finally on Monday afternoon, Joondalup Centre advised the incident
was resolved.

For all those armchair detectives investigating the case, Business
Insider Australia has confirmed that an alert system installed at
Chemist Warehouse, which lets customers know when their prescriptions
are ready for pickup, is to blame for the multi-day chaos. It was
causing electromagnetic interference with the car systems due to it
operating on the same frequency. After the prescription buzzer machine
was reset, there have not been any more reported incidents. Joondalup
Centre is monitoring the situation"
https://www.businessinsider.com.au/joondalup-shopping-centre-key-car-locked-out-2019-3


Guest

Tue Mar 12, 2019 3:45 am   



On Tue, 12 Mar 2019 09:32:08 +1000, "Taupe" <jonahreal_at_yopmail.com>
wrote:

Quote:
Je腜s wrote:
http://tinyurl.com/y6ap9tv3

I had Digital TV interference couple weekends ago & am still at a loss as
to what it was.

I use an internal TV aerial, & noticed the TV signal cycle though form 99%
signal strength to 25-30% .

The TV would go from pristine vision to freezing & pixilation, it was
annoyingly unwatchable.

I spent few hours re-arranging TV aerial to fix the problem but didn't work.

I had a set top box, & noticed the interference didn't happen on that, so I
switch to using tuner on set-top box rather than TV .

Problem has now gone & I can use tuner on TV again!?

I wonder are people importing 'electronic devices' without checking , that
are not suited/ don't comply with Australian standards & interfering with
our broadcast spectrum?


That could easily happen, for example buying from eBay. I haven't
looked for ages, but you could, for example, buy a cheap Chinese 4G
repeater that certainly wasn't compliant with Australian standards.

Computer Nerd Kev
Guest

Tue Mar 12, 2019 7:45 am   



Taupe <jonahreal_at_yopmail.com> wrote:
Quote:
Problem has now gone & I can use tuner on TV again!?

I wonder are people importing 'electronic devices' without checking , that
are not suited/ don't comply with Australian standards & interfering with
our broadcast spectrum?


Possibly, but I live far enough away from anyone who could be using
such a faulty device that it couldn't have much of an impact, yet such
occourances happen a few times a year, sometimes for weeks on end and
then it's good. Others in the area have similar problems, and in some
cases I've confirmed that it has been at the same time as I've had
issues.

Subtitles can be somewhat handy to cling onto the plot of a show
until the signal recovers, but usually when it gets that bad for
me it ends up dropping out to "no signal" for extended periods as
well.

I suspect it's something to do with atmospheric conditions. I have
similar bad periods with 3G mobile broadband, though there I wonder
if it might be due to the nearest tower being down. I'll be seeing
if 4G works any better soon, once I get Linux driver problems sorted
out with the modem that I bought.

--
__ __
#_ < |\| |< _#

Taupe
Guest

Wed Mar 13, 2019 12:45 am   



Computer Nerd Kev wrote:
Quote:
Taupe <jonahreal_at_yopmail.com> wrote:
Problem has now gone & I can use tuner on TV again!?

I wonder are people importing 'electronic devices' without checking
, that are not suited/ don't comply with Australian standards &
interfering with our broadcast spectrum?

Possibly, but I live far enough away from anyone who could be using
such a faulty device that it couldn't have much of an impact, yet such
occourances happen a few times a year, sometimes for weeks on end and
then it's good. Others in the area have similar problems, and in some
cases I've confirmed that it has been at the same time as I've had
issues.

Subtitles can be somewhat handy to cling onto the plot of a show
until the signal recovers, but usually when it gets that bad for
me it ends up dropping out to "no signal" for extended periods as
well.

I suspect it's something to do with atmospheric conditions. I have
similar bad periods with 3G mobile broadband, though there I wonder
if it might be due to the nearest tower being down. I'll be seeing
if 4G works any better soon, once I get Linux driver problems sorted
out with the modem that I bought.


atmospheric conditions could have someting to do with it.
The problem with digital TV , it's all or nothing.

I have another theory of mine, it may have been police speed trap up
the road?

Cops could have been waving around radar gun trying to catch speeding
drivers, & the radar waves bouncing off buildings onto my aerial?

I wonder if radar waves are in same range as digital TV to interfere?

keithr0
Guest

Wed Mar 13, 2019 11:45 am   



On 3/10/2019 9:17 AM, Je嚙線s wrote:
Quote:
http://tinyurl.com/y6ap9tv3

Couple of weeks ago, we had great difficulty in getting the garage door
to open using the remotes. I tried different remotes, replaced the
batteries etc but no difference. Next day I was going to dismantle the
unit to fix it but it worked no problem and has done so ever since. It
must have been some sort of interference on that day.

keithr0
Guest

Wed Mar 13, 2019 11:45 am   



On 3/13/2019 9:04 AM, Taupe wrote:
Quote:
Computer Nerd Kev wrote:
Taupe <jonahreal_at_yopmail.com> wrote:
Problem has now gone & I can use tuner on TV again!?

I wonder are people importing 'electronic devices' without checking
, that are not suited/ don't comply with Australian standards &
interfering with our broadcast spectrum?

Possibly, but I live far enough away from anyone who could be using
such a faulty device that it couldn't have much of an impact, yet such
occourances happen a few times a year, sometimes for weeks on end and
then it's good. Others in the area have similar problems, and in some
cases I've confirmed that it has been at the same time as I've had
issues.

Subtitles can be somewhat handy to cling onto the plot of a show
until the signal recovers, but usually when it gets that bad for
me it ends up dropping out to "no signal" for extended periods as
well.

I suspect it's something to do with atmospheric conditions. I have
similar bad periods with 3G mobile broadband, though there I wonder
if it might be due to the nearest tower being down. I'll be seeing
if 4G works any better soon, once I get Linux driver problems sorted
out with the modem that I bought.

atmospheric conditions could have someting to do with it.
The problem with digital TV , it's all or nothing.

I have another theory of mine, it may have been police speed trap up
the road?

Cops could have been waving around radar gun trying to catch speeding
drivers, & the radar waves bouncing off buildings onto my aerial?

I wonder if radar waves are in same range as digital TV to interfere?


No.

Rheilly Phoull
Guest

Wed Mar 13, 2019 1:45 pm   



On 13/03/2019 5:49 pm, keithr0 wrote:
Quote:
On 3/10/2019 9:17 AM, Je嚙線s wrote:
http://tinyurl.com/y6ap9tv3

Couple of weeks ago, we had great difficulty in getting the garage door
to open using the remotes. I tried different remotes, replaced the
batteries etc but no difference. Next day I was going to dismantle the
unit to fix it but it worked no problem and has done so ever since. It
must have been some sort of interference on that day.


Probably the russians

dave
Guest

Wed Mar 13, 2019 8:45 pm   



https://www.stuff.co.nz/national/106902631/dozens-locked-out-of-car-in-invercargill-cbd-because-radio-equipment-blocked-car-remotes



On 13/03/19 10:49 PM, keithr0 wrote:
Quote:
On 3/10/2019 9:17 AM, Je嚙線s wrote:
http://tinyurl.com/y6ap9tv3

Couple of weeks ago, we had great difficulty in getting the garage door
to open using the remotes. I tried different remotes, replaced the
batteries etc but no difference. Next day I was going to dismantle the
unit to fix it but it worked no problem and has done so ever since. It
must have been some sort of interference on that day.


news18
Guest

Wed Mar 13, 2019 11:45 pm   



On Wed, 13 Mar 2019 19:49:30 +1000, keithr0 wrote:

Quote:
On 3/10/2019 9:17 AM, Je嚙線s wrote:
http://tinyurl.com/y6ap9tv3

Couple of weeks ago, we had great difficulty in getting the garage door
to open using the remotes. I tried different remotes, replaced the
batteries etc but no difference. Next day I was going to dismantle the
unit to fix it but it worked no problem and has done so ever since. It
must have been some sort of interference on that day.


As far as I know, there is no requirement for anything electronic
imported into this country to undergo RF certification. So we have piles
of Rf noisy stuff everywhere.

keithr0
Guest

Thu Mar 14, 2019 12:45 am   



On 3/14/2019 8:20 AM, news18 wrote:
Quote:
On Wed, 13 Mar 2019 19:49:30 +1000, keithr0 wrote:

On 3/10/2019 9:17 AM, Je嚙線s wrote:
http://tinyurl.com/y6ap9tv3

Couple of weeks ago, we had great difficulty in getting the garage door
to open using the remotes. I tried different remotes, replaced the
batteries etc but no difference. Next day I was going to dismantle the
unit to fix it but it worked no problem and has done so ever since. It
must have been some sort of interference on that day.

As far as I know, there is no requirement for anything electronic
imported into this country to undergo RF certification. So we have piles
of Rf noisy stuff everywhere.

I can't put my Fetch box adjacent to the radio, it completely jams the
FM band. It has to be about a metre away.

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