Re: [Amps] L4-B

[Michael Tope <W4EF@dellroy.com>]

It is used pretty extensively in the flight hardware that JPL builds for 
space. I know for a fact there was a bunch used on the landing radar for 
the Curiosity rover. I am sure there is a bunch of it on the rover as 
well. In fact, I would be real surprised if there are any JPL spacecraft 
in service that don't use at least some of the stuff.
On earth people use duct tape, in space they use Kapton tape :-)

73, Mike W4EF................

On 3/31/2014 4:33 PM, Bryan Swadener wrote:
> Yes, really.
>
> We used it for decades, in both tape form and Kapton-insulated
> wire form, in critical applications at the world's largest OEM
> of RF-driven sealed CO2 Lasers.
>
> The stuff is VERY tough.  The only way we found to remove
> the insulation from wire ends was by blasting it with one of our
> more powerful (> 100W) Lasers or, by mechanically scraping it off.
>
> vy 73,
> Bryan WA7PRC
> --------------------------------------------
> On Mon, 3/31/14, Mark Bitterlich wrote:
>
>   Subject: Re: [Amps] L4-B
>   To: Bryan WA7PRC, amps@contesting.com
>   Date: Monday, March 31, 2014, 4:26 PM
>   
>   Really?   Interesting.
>   Just FYI, Kapton insulated wire was removed from ALL
>   military aircraft after some very impressive tests were done
>   showing how it
>   tended to blow and burn under certain conditions.  Of
>   course, that was the
>   Kapton insulated wire.  I know zip, nada, ZERO about
>   the tape.  Possibly it
>   is A-OK.
>   
>   v/r,
>   
>   Mark Bitterlich
>   WA3JPY
>   
>   
>   ----- Original Message -----
>   From: Bryan WA7PRC
>   To: <amps@contesting.com>
>   Sent: Monday, March 31, 2014 7:18 PM
>   Subject: Re: [Amps] L4-B
>   
>   
>   > Also, Kapton(tm) aka polyimide tape will work FB.
>   > It works well at high temperature and high voltage.
>   >
>   > vy 73,
>   > Bryan WA7PRC
>   > --------------------------------------------
>   >
>   >
>   > Date: Sun, 30 Mar 2014 23:07:13 -0500
>   > From: Edwin Karl
>   > To: amps@contesting.com
>   > Subject: [Amps] L4-B
>   >
>   > Just be very careful with the power resistors used in
>   the
>   > bias cutoff/
>   > bleeder
>   > They are mounted on long screws that run through the
>   center
>   > of the
>   > resistor. In
>   > repairing an amplifier for a buddy, I had the
>   resistors
>   > short through the
>   > porcelain of the resistor.
>   >
>   > The fix is use good 3m glass tape to insulate the
>   screw, and
>   > enough on
>   > the ends to insure centering the resistors. Unlike
>   > electrical tape,
>   > glass tape
>   > is rated at 240 degrees and will withstand the high
>   heat.
>   > Make sure to
>   > reinstall
>   > the mica insulators.
>   >
>   > Good Luck!
>   > We're all counting on you ...
>   >
>   > 73
>   >
>   > Ed K0Kl
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