Newsgroups: comp.robotics
Path: brunix!cat.cis.Brown.EDU!agate!usenet.ins.cwru.edu!news.csuohio.edu!dpalmer
From: dpalmer@csuohio.edu (Darryl Palmer)
Subject: Re: REQUEST: Simple Single Channel 27MHz TX/RX circuit diagram
Message-ID: <1994Jul13.022011.22959@news.csuohio.edu>
Sender: news@news.csuohio.edu (USENET News System)
Organization: Cleveland State University
X-Newsreader: TIN [version 1.2 PL2]
References: <2veb0m$k5m@unixfe.rl.ac.uk> <quartlowCsK3v3.MJs@netcom.com> <CsKMKJ.3r4@nntpa.cb.att.com> <1994Jul7.171732.13497@news.csuohio.edu>
Date: Wed, 13 Jul 1994 02:20:11 GMT
Lines: 44


Darryl Palmer (dpalmer@csuohio.edu) wrote:

: Wally Blackburn (wrb@ccsitn.cb.att.com) wrote:
: : Since we're on the subject of wireless data links:

: : I've been toying with the idea of a wireless data link along the lines of
: : the one in Jan Axelson's MicroComputer Journal article.  She used a pair of
: : Ramsey FM-10 transmitters and cheap FM radios with some AM7910 modem chips.
: : Anyway, I've been looking at that and other possibilities and I came across
: : the Holtek tx/rx boards in the Digi-Key catalog.

: : They have a 310 MHz serial data input AM SAW transmitter for $17.16 and a
: : companion receiver for $20.30.  So I said "Bloody hell, why am I messing
: : around trying to build a 1200 baud link for $100 when I can buy these
: : things for about $40?!"

: : Has anybody used them?  What is the max data rate?  What is range like?

: : PS.  They also have an FM pair for TX: $50.09, RX: $62.64.  Any experience
: :      with these?

: : -- 
: :    Wally Blackburn		   Clinton-Gore - Socialist Leadership
: :    wrb@ccsitn.cb.att.com		          for the 90s!
: :    Amateur Radio Station AA8DX	   I'm the NRA.
: :    '91 FXR	DoD #1375

<stuff deleted>

We bought our transmitter/receivers from Marlin P. Jones and Assoc. Inc.
Their tele is 407-848-8236 (I think they are listed in the 6.270 Docs).
Their entire kit with the Key Chain and PC Board Transmitter and PC Board
Receiver is only 49.95, so that kindof beats Di$i-Key prices.

Note: I am not affiliated with Marlin P. Jones and Associates or Digikey,
  I just believe in the bottom line being the lowest cost, which MPJ will
  give ya.


Darryl Palmer
Grand Poobah and President
IEEE Student Chapter
Cleveland State University
