Digest for sci.electronics.repair@googlegroups.com - 20 updates in 7 topics

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"pfjw@aol.com" <pfjw@aol.com>: Apr 29 09:39AM -0700

Does anyone know what type of 5-pin plug HK specified for their Citation 17? This allows the pre-amp to control multiple sets of speakers from its front panel.
 
Thanks in advance!
 
Peter Wieck
Melrose Park, PA
novalves@gmail.com: Apr 28 03:56PM -0700

How bout ultrasound
 
 
And how about using theIR filtering lenses from vcr's tv's and remote controls etc. ?
 
How about hitting the wall with an Infreared heat lamp?
"Ron D." <Ron.Dozier@gmail.com>: Apr 29 08:33AM -0700

Will the "old trick" of very thin paper (tissue/tracing paper) and a pencil work.
 
You put the paper down and use a pencil, The edges generally get defined.
N_Cook <diverse@tcp.co.uk>: Apr 29 05:18PM +0100

On 29/04/2015 16:33, Ron D. wrote:
 
> Will the "old trick" of very thin paper (tissue/tracing paper) and a pencil work.
 
> You put the paper down and use a pencil, The edges generally get defined.
 
So like brass-rubbing? or last message written on the notepad business.
I'll give it a go when I've finished with the other methods. I had tried
very oblique/acute ? lighting and saw nothing emerging.
 
My close-coupled pyro and resistor heater cone seem to be showing about
1 deg F difference between black and white areas, about 17 degrees F
above ambient. I'll have to give it a proper tryout , moving the probe
consistently in , decided on preliminary results, the cool or preheated
direction and take a grid of readings after a specific number of
seconds. My moulded up combination mount is edged with right-angle faces
so I can run it along the horizontal face of a plastic spirit level and
along the vertical wall face. The axial offset between pyro and heater
cone is a bit larger than 90 degrees because of the horizontal
separation of both. Take readings every 1/4 inch , then raise the level
1/4 inch etc.
I'll also try shining a 150W photoflood filament lamp from a fixed spot
and run the pyro around , angled so not directly in the beam and not in
its shadow either.
etpm@whidbey.com: Apr 29 09:17AM -0700


>If I could go back in time I would buy one with cash money and give a false name.
 
>but I think you are going to find it quite difficult to see through clothes, if you were thinking of that. I do believe just about all cmaeras ar designed to prevent it. Of course the TSA uses it now, but the technology was there back in the 1980s.
 
>Filters were alot of fun with black and white. Color kinda limits what you can do in some ways.
I remember all the hoopla about that. I had a black and white darkroom
when I was a kid and always wanted color. Now I'm fascinated by this
particular form of B&W.
Eric
thekmanrocks@gmail.com: Apr 29 06:28AM -0700

Leif:
 
We get it, we get it, we get it! Digital transmission stays
intact from transmitter to receiver. Fine.
 
 
But that's NOT what we're talking about, not me at least.
 
 
Folks, please let Leif believe what he wants to, and not
argue with him.
 
 
Interesting thing I'd like to point out: I posted this topic also to
rec.video and alt.video, and guess what: NO traffic there. That's like
a Pacquiao V Mayweather thread getting no comments on a
BOXING newsgroup. smh...
Michael Black <et472@ncf.ca>: Apr 29 10:32AM -0400

N_Cook <diverse@tcp.co.uk>: Apr 29 07:56AM +0100

On 28/04/2015 20:48, Gareth Magennis wrote:
 
> Its a lot less hassle to simply get it off with a Stanley knife.
 
> Gareth.
 
Its the first time I've reconed using a kit, so I suppose in these
circumstances attacking with a Stanley knife would be sensible. Previous
reconings were where the cone/spider have come unstuck due to ,
normally, storage in damp garage then aluminium corrosssion and then
glue failure, requiring clean removal of cone , cleaning up and
refitting the original.
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Digest for sci.electronics.repair@googlegroups.com - 25 updates in 5 topics

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Digest for sci.electronics.repair@googlegroups.com - 18 updates in 8 topics

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