[lug] [OT] Old Stuff

[Ken MacFerrin]

Nate Duehr wrote:
> Kenneth D. Weinert wrote:
> 
>> I can't imagine a use for these, but can anyone think of a reason to
>> *not* throw out a Hayes 2400 and an Intel 144e modem?
> 
> *IF* the 2400 has the real clicky-click type RELAY in it, there's some
> interesting applications for that in the radio world...
> 
> (The relay closes the "line two" pins together on the RJ11 on the back
> of the modem whenever it's off-hook, and allows for keying a radio
> whenever the modem is told to go "off-hook"... for purposes of sending
> DTMF commands to remote radio sites.)
> 
> Heh... but that's pretty esoteric.  And I think the 1200 was the last
> modem that did it.  I don't think the 2400 did.
> 
> The original Hayes 1200 baud modems also had a "hidden" AT command to
> send Morse Code via a switched single AF tone... so mixed with the
> above, a PC, the modem, and a cable to the radio were all one needed to
> remotely transmit and program something via DTMF over a radio link, and
> also to legally ID the transmitting station!
> 
> Heh... sorry... way out of left field, I know.  I was hunting for a
> Hayes 1200 earlier this year to hook up to do this, and then realized
> that most of them are so old their power supply and filter capacitors
> are completely dried out, and the first power spike they take, they
> usually croak... too much work.
> 
> Easier to just use my existing sound-card interface, generate DTMF there
> which keys the radio via VOX, and plug in a mic to ID it when I'm done. 
> :-)


This, my friend, is a true demonstration of exceptional geek qualities..

;)