I bought a pair.  They work.  I fed a 1Khz square wave
into the transmitter and scoped the receiver output.
I have not actually used them yet for data, but I imagine
that a set of Holtek remote control decoder chips would
work well, or you can roll your own serial protocol.

One thing I would recommend, if you roll your own
protocol, is to make sure that on and off time
are balanced. An NRZI type algorithmic perhaps...
(Please don't ask *me* about NRZI, I only mention
it because I know of it as one of the balanced
code schemes out there.)  The receiver as a very active
gain control and you don't want it jumping all over trying
to track the average energy of your carrier as it
bounces all over.

If and when I get to it, I'll share my success / failure
with the list, but it will be a while.  Too many other
tasks and too little time.

Dan

On Tue, 5 Oct 1999 10:30:16 -0500, Adam Bryant wrote:

>All,
>Browsing through the latest Tech America (now Radioshack.com) catalog, I
>came across the following RF Transmit/Receive modules.  As the question
>of where to buy RF modules appears frequently on the list I thought I
>would pass along this info FWIW.
>
>Cat #: 900-6896 Mfr's #: TX433  UHF Transmitter 433.92MHz       $9.85   3-12v
>operating voltage range, 200 meter range.
>Cat #: 900-6895 Mfr's #: RX433  UHF Receiver 433.92MHz  $9.95   4-5.5v
>operating voltage range.
>
>If anyone has used these modules, please provide us some feedback.  These
>look perfect for a semi-autonomous (a la Mars Sojourner) robot I have
>been thinking about building (PIC based, of course).
>
>Adam Bryant (age 0x23)
>abryant@peaktech.com (work)
>adamdb@juno.com (home)
>Parker, CO, USA
>Robotics, RC Airplanes, anything using a PIC
>
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