DR7003-DK RFM, DR7003-DK Datasheet - Page 3

• Manufacturer Part Number: DR7003-DK
• Description: 3G DEVELOPMENT KIT 303.825 MHZ
• Manufacturer: RFM
• Type: Transceiverr

Specifications of DR7003-DK

• Frequency: 303.825MHz
• For Use With/related Products: DR7003
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 583-1047

RF Monolithics, Inc.
1.0 Overview
The DRXXXX-DK kit allows for full demonstration or development of the third-generation (3G) TRXXXX Virtual
Wire device. The kit provides “Out of the box” operation with or without the accompanying software. Two-way
Range Test capability is included by simply snapping on the included 9V battery, turn on power, and
configuring the opposite board for transmit. A small area is available for custom development with other
popular microprocessors. The DRXXXX Data Radio boards are configured to operate at a data rate of 4.8
kbps. The kits are shipped with a pair of data radio boards and matching antennas. Data Radio boards with
antennas can be purchased separately for development of applications.
2.0 Development Board Operation
Rev1
2.1 Antennas
Two dipole antennas are included. These antennas are tuned for resonance around the device center
frequency and provide excellent performance for range test or other link development. Suitable antennas
are crucial to the success of a Virtual Wire application. Here are several key points to consider in
designing antennas for your application:
• Where possible, the antenna should be placed on the outside of the product. Also,
• Regulatory agencies prefer antennas that are permanently fixed to the product.
• An antenna can not be placed inside a metal case, as the case will shield it. Also,
• Many other antenna designs are possible, but efficient antenna
try to place the antenna on the top of the product. If the product is “body worn”, try to
get the antenna away for the body as far as practical.
Antennas can be supplied with a cable, provided a non-standard connector is used
to discourage antenna substitution (these connectors are often referred to as
“Part 15” connectors).
some plastics (and coatings) significantly attenuate RF signals and these materials
should not be used for product cases, if the antenna is going to be inside the case.
development requires access to antenna test equipment such as a vector network
analyzer, calibrated test antenna, antenna range, etc. Unless you have access to
this type of equipment, the use of an antenna consultant is recommended.
[phone] toll-free in U.S. and Canada
Figure 1. 3G VWO Development Board
www.rfm.com
Email: [e-mail]
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