Re: Null modem cable

[brian.hammack@rook.wa.com (Brian Hammack)]

 John left this scat:

[speaking of null-modem cables]
>I need to find one of these.  Is this something I can find at a radio
>shack, or a cable store, or do I need to make it myself.

If you go into a RatShack and ask for a null-modem cable, you will get
a negative response.  (Heck, if you say it's for your Apple, you'll even
get a blank stare or a "We don't carry Apple products" here, while
leaning on the wall of printer ribbons -- they no longer carry Image-
writer black ribbons but the Immy2 color ribbons went from $13 to $7.)

However, if you go into a RatShack and you ask for a 26-1496 (which
retails for $5), you will have better luck.  It's a null modem adaptor,
25-pin on both sides.  [The 9-pin version is 26-264, $4.]  Slap that
on whichever end of the cable you are using right now it will fit on,
plug it back in to what you pulled it out of, and you're set.

If by some chance you're trying to get between two things which do not
have D9 or D25 ends, uhh, go to a computer store -- or do what I have
always done, connect the phone IN lines between your modems.  The two
ways I've accomplished this:  1) If you have two phone jacks in your
house on the same line, put both computers on the phoneline, take one
off the hook and wait for the beep-beep-beep to end, then do an ATA on
one computer and an ATD on the other from your term programs.  When they
connect, hang up the phone.  2) Take an inline coupler (RatShack part
279-358, $3) and connect the two lines -- note, you must have an even
number of lines to do the "nulling" because an odd number (like if you
had a third piece of phone line to connect those two ends) cancels it.
Follow the same procedure as above with the term programs (ATA & ADT).

And remember, if you're null-modeming between cards/ports you can go
the fastest the systems will handle (19.2 on an unmodified Apple), but
if it is between the modems themselves (the procedure I've described
last paragraph) it is the highest speed of the slowest modem.


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--                                                                   -- 
yet another annoying post by brian.hammack@rook.wa.com -- deal with it.