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- Path: sparky!uunet!olivea!spool.mu.edu!umn.edu!doug.cae.wisc.edu!kolstad
- From: kolstad@cae.wisc.edu (Joel Kolstad)
- Newsgroups: comp.sys.hp48
- Subject: Re: Radio for HP48sx
- Message-ID: <1992Dec14.192605.19394@doug.cae.wisc.edu>
- Date: 15 Dec 92 01:26:05 GMT
- References: <TAL.2@sarpih.no> <{m#@byu.edu>
- Organization: U of Wisconsin-Madison College of Engineering
- Lines: 24
-
- >In article <TAL.2@sarpih.no> TAL@sarpih.no (Tor Atle Lunde) writes:
- >
- >> This subject facinates me a lot. I have been thinking of this since
- >>i made a chat program for the hp48sx, and i hope this problem will be solved
- >>nice and easlily! FM receivers can be bought (and made) very cheap and
- >>small, but the transmitter makes some sort of problems. Of course, since I
- >>am thinking of using this on school with my classmates, we cannot have
- >>walkie-talkies on our desk. So does anyone know of a transmitter that is
- >>compact enough to use at school ??
-
- I know this isn't what you wanted, but, if you stretch the definition of
- "radio" a little, you already have one built in -- the IR port! This built
- in radio just happens to be transmitting up in the GHz range and has
- a line of sight transmission pattern. :-)
-
- It'll happily zap programs, etc. to someone all of... 6 inches?... away.
- The IR LED has plenty of zing in it, but HP hobbled the receiver so that
- people wouldn't be tempted to CHEAT ON EXAMS. Ahem.
-
- (This is actually an interesting move... it lets the 48 still act like a
- remote control, vs. hobbling the IR LED which would save a lot of power,
- but diminish the 48's hacker value. Hmm.)
-
- ---Joel Kolstad
-