[R-1051] Power interlock questions

[flood at Krohne.com]

Thanks Mike,

As long as you guys don't tell my wife how to DF me when I should be doing
house stuff I'll be all set.

John Flood
TASC Department
KROHNE, Inc
7 Dearborn Rd.
Peabody, MA   01960
Tel.:  978-535-6060 / 800-356-9464
Fax:   978-535-8180


                                                                                                                                        
                      mikea                                                                                                             
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                      03/23/2004 12:26                                                                                                  
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On Tue, Mar 23, 2004 at 12:04:43PM -0500, flood at Krohne.com wrote:

> Got my R-1051B mounted in a rack (ouch) and checked out the R-1051
> "Plain"....  I hope I used the correct term as I don't want to start up
> something like the R-390 "Non A" war over here. The power interlocks are
a
> bit touchy but operational on the "B" but on the "plain" the nylon(?)
wedge
> was cracked.  When I manually activate it the radio works fine, or should
I
> say worked fine once I figured out that this version has two interlocks,
> one of them switchable!!!  As if this thing isn't complex enough.  Other
> than safety and the "No User Serviceable Parts Inside" concerns.  Is
there
> any reason I shouldn't bypass these microswitches?

I suppose you could always call it "Vanilla", or "Original", although
I hope never to see an R-1051-Extra-Crispy or -Chocolate.

I could be wrong, but I suspect _strongly_ that the switch is there to
prevent "undesired or compromising emanations". I haven't seen any
data on how loud the R-1051 is when it's powered-up outside its case,
but it might be an interesting project for someone with the right set
of gear.

If you're out in the middle of the ocean, radio-silent, you _don't_
want someone opening up anything that could radiate enough to let
someone find you. Remember how, in his book _Spycatcher_, Peter Wright
told of catching spies by DFing on the IFs or LOs of their superhet
receivers, and of listening to the data on the IFs?

--
Mike Andrews
mikea at mikea.ath.cx
Tired old sysadmin
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