mcso1h-c ABACOM Technologies, Inc, mcso1h-c Datasheet - Page 3

• Manufacturer Part Number: mcso1h-c
• Description: Am Transmitter Modules
• Manufacturer: ABACOM Technologies, Inc

ANTENNA SELECTION CHART
C) Whip, fig 4c This is a wire, rod, PCB track or combination connected directly to the antenna pin of the
module. Optimum total length is 17 cm (1/4 wave at 418 MHz) or 16.5cm (1/4 wave at 433.92 MHz).
Keep the open circuit (hot) end well away from metal components to prevent serious de-tuning. Whips
are ground plane sensitive and will benefit from internal 1/4 wave earthen radial if the product is small
and plastic cased.
The antenna choice and position directly controls the system range. Keep it (particularly the ‘hot’ end)
clear of other metal in the system, particularly large ones like transformers, batteries and PCB tracks and
any ground plane. The space around the antenna is as important as the antenna itself. The best position
by far, is protruding out the top of the product. This is often not desirable for practical/ergonomic reasons
thus a compromise may be necessary.
Disclaimer:
Technical specifications are subject to change without notice. Whilst every effort has been made to ensure the accuracy of the information contained
in this document, ABACOM Technologies Inc. does not assume responsibility for any errors or omissions that may exist. ABACOM Technologies Inc.
does not assume responsibility for any damage caused through use or misuse of their products and the onus lies entirely with the end user in deter-
mining the suitability of and use of the product for any particular application. ABACOM Technologies Inc. products are not recommended for applica-
tions where human life may be at risk.
Ultimate performance
Ease of design setup
Size
Immunity to proximity effects
ABACOM Technologies, Inc.
•
383 Bering Ave • Etobicoke • ON • M8Z 3B1 • Tel [phone] • Fax [phone]
Helical
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www.abacom-tech.com
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A
433MHz = 24 turns
433MHz = 16.5cm from the antenna pin
315MHz = 22.7cm from the antenna pin
Loop
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B
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Whip
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C
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