Newsgroups: comp.robotics
Path: brunix!news.Brown.EDU!agate!ihnp4.ucsd.edu!swrinde!sgiblab!news.cs.indiana.edu!cyliax@cs.indiana.edu
From: "Ingo Cyliax" <cyliax@cs.indiana.edu>
Subject: Re: Wireless RS232 link
Message-ID: <1994Mar14.081139.20959@news.cs.indiana.edu>
Organization: Computer Science, Indiana University
References: <24.4842.2500.0NB2DCE7@pcohio.com>
Date: Mon, 14 Mar 1994 08:11:37 -0500
Lines: 57

In article <24.4842.2500.0NB2DCE7@pcohio.com>,
Andrew Jenkins <andrew.jenkins@pcohio.com> wrote:
>AJ> and second, they are outrageously priced! I have been investigating ju
>AJ> such a purchase for the facility I work at, and prices in the 
>AJ> neighborhood of $2000 per unit are what I've seen. (granted 9600 baud, 
>AJ> but...)
>
>K >CommRad has a spread-spectrum 900Mhz radio modem for $429/pair.
>K >Full duplex, up to 38400 baud, although I've only gotten reliable
>K >transmission at 9600.  --kk
>
>Nice price. It looks like I've been running into "Oh goodie, a 
>government purchase!" $$$;> ) companies. Do you know if an FCC licence is 
>required?
>
>BTW Would you post their address? (if you have it, of course :)

Well, here are their address and some specs. This is probably not top of
the line high-tech. equipment, but it's something you can buy today that
seems to work and you don't need a license. The only reservations I have
about these units is their weight & size. Other than that, they apear to
work and they have been good about answering our questions.

COMRAD
Coummunications Research & Development Corporation
7210 Georgetown Rd, Suite 300
Indianapolis, IN 46268
Tel: 317 290 9107
Fax: 317 291 3093

Model		Description					Price
CCL901-DP	Duplex pair with software and cables		$449.95
CCL901-DPX	Duplex pair without software and without cables	$429.95
CCL901-TR	Single Transceiver				$229.95
BP901		8hr. rechargable battery pack			$99.95

Specs.

Size	6 3/8" x 3 3/4" x 1 1/2"
Weight	12oz without ingternal battery/20oz with

Frequency of Operation
	Remote	923.050-926.950 Mhz
	Host	905.050-908.950 Mhz


There are 2 data channels (transmit/receive) for duplex operation. Als
there is a control channel in either direction that can be used to control
one of the modem control signals (DTR,DSR,DCD,RTS,CTS).

Hope that helps, -ingo

PS: I don't have anything to do with them except being a (potential)
customer.

-- 
/* Ingo Cyliax, cyliax@cs.indiana.edu, +1 812 333 4854, +1 812 855 6984 (day) */
