George Bush video camera jammer

[Rod Speed]

Kevin Ettery <kpettery@dcsi.net.au> wrote in message
news:3fac50da@news.leadingedgeinternet.net.au...

Rod Speed <rod_speed@yahoo.com> wrote
Allan <allanaws@hotmail.com> wrote

And whats the betting the Tape did have colour bars already on it,

Sure, thats one obvious possibility.

The other is that the camera can generate those and the
substantial RF from the van managed to put it into that mode.

thus when the recording signal failed due to the high energy RF these
Guys where TXing, thus allowed the original recording to come through,

As most Broadcast VTRs and DV VTR's use a flying erase
head. There would be no apparent Signal interrupition when
the interference started ,in the playback of the tape.

Its more likely that the substantial RF just got
the camera to produce the color bars itself,
just like its capable of doing on user command.

The Third possibility is that the van had video gear on board and that a
piece of gear that should have been in standby (or switched off) was active.

Dunno, its a bit unlikely that a handheld video camera would accidently
demodulate an RF signal and put the signal on the tape accidentally.

This may have caused enough signal to overwhelm the camera
- it may have even been blasting out a colour bar itself. The
techs in the van may not even have been aware of it (the
frequency would not interfere with normal radio comms).

(BTW the van is probably there to let the prez contact other
members of the cabinet, etc., and vice-versa, in the event of an
emergency - nuclear attack/response being one such situation)

Yep, thats certainly what its there for, full time comms
in case the shit hits the fan rather comprehensively.

"Rod Speed" <rod_speed@yahoo.com> wrote in message
news:bo8vo5$1b1h1i$1@ID-69072.news.uni-berlin.de...

Pat Sproule <patsproule@ozemail.com.au> wrote in message
news:OZSpb.548$Ka1.11151@nnrp1.ozemail.com.au...

Well - I didn't suggest that it was broadcasting bars to the camera
- only that the camera was switching to it's bars generator. I am
just as sceptical as you - even a sceptical as 'Rod Speed' appears
to be and as such I remain unconvinced that jamming has happened.

Yeah, they wouldnt be that stupid. It would be so obvious what they
were doing if they were stupid enough to attempt deliberate jamming.

Its gotta be just some transmissions from the van, presumably
used to communicate back to whatever they use for comms,
getting into that particular camera and fucking it up unintentionally.

The van is obviously just there in case the prez gets shot etc.
And maybe its part of the system that allows the prez to nuke
the ruskys back to the stone age if they launch on the US etc.

However, having seen the tape and the break-up I know that
something other than a camera stop/start transition occurred
at either end of the bars on tape and that the switch to bars
occurred when the van came into close proximity in the shot
and switched back when it was some distance away (as
evidenced in the shot that came back).

Sure, easy to see how higher powered transmissions
from the van could do that. Thats not jamming tho.

The initial transition appears as a
DV head clog would, but only briefly.

Re the mobile phone Rod, This one is from
an electronics engineering magazine (printed).

Its bullshit. If it was that easy, they'd be using
then in changing rooms etc right from the start.

Perhaps not an infallible source but better than the net.

Depends on the rag. It may well have got it from the net.


"KoRRupT" <me@nowhere> wrote in message
news:3fa74568$1@duster.adelaide.on.net...

"Pat Sproule" <patsproule@ozemail.com.au> wrote in message
news:EzVob.993$xL4.24059@nnrp1.ozemail.com.au...
Perhaps some of you have a take on this one...

If the van did transmit some kind of 'coloured bar' jamming
signal,
the DV
camera would need to be able to pick it up, decode it, digitise it
and
write
it to the tape...

sounds like science fiction...

 

[Rod Speed]

"Russ" <russ_spmtrp@hotmail.com> wrote in message news:boiooh$1f96l9$1@ID-192123.news.uni-berlin.de...

"Kevin Ettery" <kpettery@dcsi.net.au> wrote in message
news:3fac50da@news.leadingedgeinternet.net.au...

"Rod Speed" <rod_speed@yahoo.com> wrote in message
news:boh8p9$1ds8hi$1@ID-69072.news.uni-berlin.de...

Allan <allanaws@hotmail.com> wrote in message
news:mKCqb.88$aT.57@news-server.bigpond.net.au...

And whats the betting the Tape did have colour bars already on it,

Sure, thats one obvious possibility.

The other is that the camera can generate those and the
substantial RF from the van managed to put it into that mode.

thus when the recording signal failed due to the high energy RF these
Guys where TXing, thus allowed the original recording to come through,

As most Broadcast VTRs and DV VTR's use a flying erase head.
There would be no apparent Signal interrupition when the interference
started ,in the playback of the tape.

Its more likely that the substantial RF just got
the camera to produce the color bars itself, just
like its capable of doing on user command.

The Third possibility is that the van had video gear on board and that a
piece of gear that should have been in standby (or switched off) was
active.
This may have caused enough signal to overwhelm the camera - it may have
even been blasting out a colour bar itself. The techs in the van may not
even have been aware of it (the frequency would not interfere with normal
radio comms).

It's highly unlikely the van was broadcasting colour bars - if it was, it
would more likely be an NTSC signal, not PAL, and the bars would be SMPTE
bars as used in the US, not EBU bars as used in Australia - the original
poster said they were EBU bars.

There is the distinct possibility that the tape was pre-striped with
internal camera bars, which the operator has denied, but this seems to be
the most likely explanation, and some signal from the van caused the camera
to stop recording.

The last possibility is some inbuilt mechanism within the camera to switch
to the internal bar generator in response to a specific signal broadcast
from the camera - being a semi-pro camera the XL-1 does have an internal
bars generator. This last explanation is the most sinister, as it implies
some involvement by the manufacturer. However, as the other non-DV cameras
weren't affected - the SX cameras probably being of a similar age to the
XL-1S in question - it seems dubious that this "feature" would only be
enabled on this semi-pro camera, but not on other pro cameras.

The conspiracy theory stuff is completely silly.

By far the most likely explanation is that the camera does indeed
have an internal color bar generator and that that got ACCIDENTALLY
switched on by the high level RF transmission from the van.

 

[Pat Sproule]

"Russ" <russ_spmtrp@hotmail.com> wrote in message
news:boiooh$1f96l9$1@ID-192123.news.uni-berlin.de...

There is the distinct possibility that the tape was pre-striped with
internal camera bars, which the operator has denied, but this seems to be
the most likely explanation, and some signal from the van caused the
camera
to stop recording.

They swear black and blue that it was a virgin tape - just un-wrapped and
thus not striped with bars.

Pat (original poster).

 

[Pat Sproule]

"Rod Speed" <rod_speed@yahoo.com> wrote in message
news:boh8k1$1d5ac9$1@ID-69072.news.uni-berlin.de...

Allan <allanaws@hotmail.com> wrote in message
newsACqb.76$aT.56@news-server.bigpond.net.au...

And it would not make it go to colour Bars..

You dont know that if the camera has an internal color bars function.

There is no way a Transmitter can transmit
such a Strong signal that it would
(a)erase / jamm a signal from the Video heads
(b)create a Colour bar signal..

Doesnt need to create it, just monster the camera
into that mode that it can do on user command.

An XL1S has an internal generator that outputs EBU bars. I am leaning
towards the suggestion that interference tripped it into the bars mode. I
still find it hard to believe but that is about the only option / suggestion
that is (remotely) plausible.

Pat (original poster).

 

[Bushy]

Maybe you should buy your student a roll of aluminium foil!

Peter

 

[Allan]

I checked with a couple of guys from Seven's Production Unit, the Digital
cameras do have a Colour Bar generator,
but he has not heard of this incident, which is strange as I would have
thought they all would have been talking about it..
Allan

"Rod Speed" <rod_speed@yahoo.com> wrote in message
news:bojo7o$1f8lel$1@ID-69072.news.uni-berlin.de...

"Russ" <russ_spmtrp@hotmail.com> wrote in message
news:boiooh$1f96l9$1@ID-192123.news.uni-berlin.de...

"Kevin Ettery" <kpettery@dcsi.net.au> wrote in message
news:3fac50da@news.leadingedgeinternet.net.au...

"Rod Speed" <rod_speed@yahoo.com> wrote in message
news:boh8p9$1ds8hi$1@ID-69072.news.uni-berlin.de...

Allan <allanaws@hotmail.com> wrote in message
news:mKCqb.88$aT.57@news-server.bigpond.net.au...

And whats the betting the Tape did have colour bars already on it,

Sure, thats one obvious possibility.

The other is that the camera can generate those and the
substantial RF from the van managed to put it into that mode.

thus when the recording signal failed due to the high energy RF
these
Guys where TXing, thus allowed the original recording to come
through,

As most Broadcast VTRs and DV VTR's use a flying erase head.
There would be no apparent Signal interrupition when the
interference
started ,in the playback of the tape.

Its more likely that the substantial RF just got
the camera to produce the color bars itself, just
like its capable of doing on user command.

The Third possibility is that the van had video gear on board and that
a
piece of gear that should have been in standby (or switched off) was
active.
This may have caused enough signal to overwhelm the camera - it may
have
even been blasting out a colour bar itself. The techs in the van may
not
even have been aware of it (the frequency would not interfere with
normal
radio comms).

It's highly unlikely the van was broadcasting colour bars - if it was,
it
would more likely be an NTSC signal, not PAL, and the bars would be
SMPTE
bars as used in the US, not EBU bars as used in Australia - the original
poster said they were EBU bars.

There is the distinct possibility that the tape was pre-striped with
internal camera bars, which the operator has denied, but this seems to
be
the most likely explanation, and some signal from the van caused the
camera
to stop recording.

The last possibility is some inbuilt mechanism within the camera to
switch
to the internal bar generator in response to a specific signal broadcast
from the camera - being a semi-pro camera the XL-1 does have an internal
bars generator. This last explanation is the most sinister, as it
implies
some involvement by the manufacturer. However, as the other non-DV
cameras
weren't affected - the SX cameras probably being of a similar age to the
XL-1S in question - it seems dubious that this "feature" would only be
enabled on this semi-pro camera, but not on other pro cameras.

The conspiracy theory stuff is completely silly.

By far the most likely explanation is that the camera does indeed
have an internal color bar generator and that that got ACCIDENTALLY
switched on by the high level RF transmission from the van.

 

[Clifford Heath]

Pat Sproule wrote:

Perhaps some of you have a take on this one...

There's been talk recently about protecting the forces in Iraq
from radio-triggered roadside bombs using electronic means,
either jamming transmissions, blasting signals into devices,
building only phones that can be shut down remotely, etc.

It's quite possible that GB's entourage carries such a device
to protect him - even if it's not guaranteed to work it would
offer some protection. I think it's quite likely in fact.

Clifford.

 

[Rod Speed]

Allan <allanaws@hotmail.com> wrote in message
news:XbYsb.10155$aT.7625@news-server.bigpond.net.au...

I checked with a couple of guys from Seven's Production Unit,
the Digital cameras do have a Colour Bar generator, but he
has not heard of this incident, which is strange as I would
have thought they all would have been talking about it..

Presumably that fortuitous triggering of the internal color bar
generator didnt happen with theirs. Not surprising that that
sort of fortuitous triggering by higher level RF from the van
didnt affect every camer with an internal color bar generator.
In fact it would be a hell of a lot more surprising if it did.

Presumably the particular design the kids were using
isnt as well designed on rejection of external RF etc.

"Rod Speed" <rod_speed@yahoo.com> wrote in message
news:bojo7o$1f8lel$1@ID-69072.news.uni-berlin.de...

"Russ" <russ_spmtrp@hotmail.com> wrote in message
news:boiooh$1f96l9$1@ID-192123.news.uni-berlin.de...

"Kevin Ettery" <kpettery@dcsi.net.au> wrote in message
news:3fac50da@news.leadingedgeinternet.net.au...

"Rod Speed" <rod_speed@yahoo.com> wrote in message
news:boh8p9$1ds8hi$1@ID-69072.news.uni-berlin.de...

Allan <allanaws@hotmail.com> wrote in message
news:mKCqb.88$aT.57@news-server.bigpond.net.au...

And whats the betting the Tape did have colour bars already on it,

Sure, thats one obvious possibility.

The other is that the camera can generate those and the
substantial RF from the van managed to put it into that mode.

thus when the recording signal failed due to the high energy RF
these
Guys where TXing, thus allowed the original recording to come
through,

As most Broadcast VTRs and DV VTR's use a flying erase head.
There would be no apparent Signal interrupition when the
interference
started ,in the playback of the tape.

Its more likely that the substantial RF just got
the camera to produce the color bars itself, just
like its capable of doing on user command.

The Third possibility is that the van had video gear on board and that
a
piece of gear that should have been in standby (or switched off) was
active.
This may have caused enough signal to overwhelm the camera - it may
have
even been blasting out a colour bar itself. The techs in the van may
not
even have been aware of it (the frequency would not interfere with
normal
radio comms).

It's highly unlikely the van was broadcasting colour bars - if it was,
it
would more likely be an NTSC signal, not PAL, and the bars would be
SMPTE
bars as used in the US, not EBU bars as used in Australia - the original
poster said they were EBU bars.

There is the distinct possibility that the tape was pre-striped with
internal camera bars, which the operator has denied, but this seems to
be
the most likely explanation, and some signal from the van caused the
camera
to stop recording.

The last possibility is some inbuilt mechanism within the camera to
switch
to the internal bar generator in response to a specific signal broadcast
from the camera - being a semi-pro camera the XL-1 does have an internal
bars generator. This last explanation is the most sinister, as it
implies
some involvement by the manufacturer. However, as the other non-DV
cameras
weren't affected - the SX cameras probably being of a similar age to the
XL-1S in question - it seems dubious that this "feature" would only be
enabled on this semi-pro camera, but not on other pro cameras.

The conspiracy theory stuff is completely silly.

By far the most likely explanation is that the camera does indeed
have an internal color bar generator and that that got ACCIDENTALLY
switched on by the high level RF transmission from the van.