Rod, at 10:44 on Dec 03 1996, you wrote to Bill Grimsley...

BG> Somewhat similar to what I'm using here, except mine is a 
BG> clear IR LED wired to the CRO, so I can physically see the 
BG> PCM from remote transmitters.

RG> Sounds good, but in all my years of servicing I can't recall 
RG> a single time where I've needed to see the PCM - In my 
RG> experience IR RC's either Xmit the correct data or they don't 
RG> xmit at all..   generally speaking that is.

True, they appear to either work properly, or not at all.  It was just
easier at the time to stick a LED in a BNC plug, and bung it in the Ch2
connector on the CRO (I don't use dual-trace all that often), so that it's
always instantly available if I need it.

BG> However, this is NOT the application my friend has in mind, but I really 
BG> can't be any more specific than that, as I believe that what he has in mind 
BG> is possibly bordering on illegal.

RG> If I supply the solution, will he guarantee me 50% of his takings? 

Sure, as long as you guarantee to do 50% of his gaol time if caught.  :)

RG> Incidently, if he wants this to avoid or bypass IR security 
RG> systems then he's not gunna have much luck, 'cos the passive 
RG> IR sensors that are most commonly used are exactly that. 
RG> Passive!.  They don't *emit* IR, they sense it.

I've finally managed to talk him out of it, but AFAIK, they were not PIR
sensors at all, but the beam type with a Tx and Rx diode (just like those
portrayed in "The Wrong Trousers").

Regards, Bill

--- MsgedSQ/2 3.50