Data Delivery Devices VHF, UHF & ISM Wireless RTU RFScada 8ADI-9DO 4ADI-5DO User Manual

RFScada 8ADI-9DO/4ADI-5DO Manual Ver 3.6 Copyright ©2005 Data Delivery Devices LLC Page - 71 – Bartlesville OK Tel 918-335-3318      FAX 918-398-9990 
Radio Options 
  The two RFScada devices described in this manual may operate with many different wireless 
(and hard wired) communication options. The most popular units have low power ISM 902-928MHz 
spread spectrum radios installed, but these are not suitable for all applications. The following table 
summarizes current standard options; please note...

RFScada 8ADI-9DO/4ADI-5DO Manual Ver 3.6 Copyright ©2005 Data Delivery Devices LLC Page - 72 – Bartlesville OK Tel 918-335-3318      FAX 918-398-9990 
 
 
VHF / UHF Operating Frequency and Power Selection.   
Selecting the optimal frequency band has several implications when using the VHF and UHF 
radios. In most cases either frequency band will give excellent results; however license and antenna 
factors should also be evaluated when deciding which range to use as it can have significant affect on 
the...

RFScada 8ADI-9DO/4ADI-5DO Manual Ver 3.6 Copyright ©2005 Data Delivery Devices LLC Page - 73 – Bartlesville OK Tel 918-335-3318      FAX 918-398-9990 
Typical VHF / UHF Radio Band Selection  Flowchart 
 
 
 
 
 
VHF / UHF High 
Power Radios 
Required. 
Select Frequency 
Band, VHF or UHF
Required to 
communicate with 
existing system?  
 
YES 
NO
Existing VHF? 
 
Existing UHF?  Select VHF 
Select UHF 
Comparatively  short 
range / shallow hills? 
 
YES 
NO
Select UHF 
Select UHF 
Select UHF 
Line of sight...

RFScada 8ADI-9DO/4ADI-5DO Manual Ver 3.6 Copyright ©2005 Data Delivery Devices LLC Page - 74 – Bartlesville OK Tel 918-335-3318      FAX 918-398-9990 
Typical VHF / UHF Radio Power Selection  & FCC License  
Application Process Flowchart 
 
VHF or UHF 
Frequency Band 
Already Selected 
Select Radio Power 
Output
Required to 
communicate with 
existing system?  
 
YES 
NO
Select power 
depending on 
existing system 
/ license 
Can system be fulfilled 
with 20 or less radios 
each 2 Watts or less ? 
 
YES...

RFScada 8ADI-9DO/4ADI-5DO Manual Ver 3.6 Copyright ©2005 Data Delivery Devices LLC Page - 75 – Bartlesville OK Tel 918-335-3318      FAX 918-398-9990 
Advanced Radio and Network Diagnostics. 
For monitoring complex systems and troubleshooting individual radios an additional software 
tool, RFMonitor is available from Data Delivery Devices. This software program connects directly via 
the PC’s serial port to a radio module (not an RFScada unit) and allows the PC to monitor over the air 
radio traffic in...

RFScada 8ADI-9DO/4ADI-5DO Manual Ver 3.6 Copyright ©2005 Data Delivery Devices LLC Page - 76 – Bartlesville OK Tel 918-335-3318      FAX 918-398-9990  

RFScada 8ADI-9DO/4ADI-5DO Manual Ver 3.6 Copyright ©2005 Data Delivery Devices LLC Page - 77 – Bartlesville OK Tel 918-335-3318      FAX 918-398-9990 
External Antennas. 
In some situations, due to distance, obstacles or other factors an external antenna may need 
to be installed on one or more units. There are several sizes and styles available from Data Delivery 
Devices LLC, depending on the application. FCC approved Yagi type antennas and omni-directional 
models are offered for operation with the...

RFScada 8ADI-9DO/4ADI-5DO Manual Ver 3.6 Copyright ©2005 Data Delivery Devices LLC Page - 78 – Bartlesville OK Tel 918-335-3318      FAX 918-398-9990 
 
Several styles of antennas are available, including short Yagis, low 
profile antennas, omni-directional whip types etc.  
 
 The antenna signal 
dispersion patterns are 
shown. One (the E-
Plane) shows the 
radiation pattern as 
viewed from above; the 
other (H Plane) shows 
the pattern viewed from 
the side. 
Normal Orientation for Yagi Antennas  

RFScada 8ADI-9DO/4ADI-5DO Manual Ver 3.6 Copyright ©2005 Data Delivery Devices LLC Page - 79 – Bartlesville OK Tel 918-335-3318      FAX 918-398-9990 
E plane  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
H plane 
             
  
  

RFScada 8ADI-9DO/4ADI-5DO Manual Ver 3.6 Copyright ©2005 Data Delivery Devices LLC Page - 80 – Bartlesville OK Tel 918-335-3318      FAX 918-398-9990