DAVIS SPREAD-SPECTRUM RADIO MODEM Manual

I
NTRODUCTION
The Spread-Spectrum Radio Modem Installation Kit contains the materials nec-
essary to connect a WeatherLink
modem. You will need to obtain the radio modem (RM) directly from YDI. See
the accompanying sheet for YDI product and contact information.
Three versions of the installation kit are available. One includes an omni-direc-
tional antenna (#7623-003) and mounting hardware, one a directional (Yagi)
antenna (#7623-008) and mounting hardware, and one includes the mounting
hardware, with no antenna (it is intended for use with the 12dB Yagi antenna
from YDI). Installation instructions for all three kits are contained in this man-
ual. You will need one installation kit for each node in your communications
net. Two are required for a point-to-point link.
C
OMPONENTS
All versions of the installation kit contain the following components. Please
make sure you have all components before continuing.
Power Adapter
Mounting Plate
Velcro Strap
#6 x 3/8" Sheet Metal Screws
#4 x 3/8" Sheet Metal Screw
#6 x 3/4" Wood Screws
S
P R E A D
R
A D I O
I
N S T A L L A T I O N
F Y DI R
O R
O
M N I -
D
I R E C T I O N A L
data logger to a YDI model 910-DAVIS radio
®
Power Cable
Terminal
Block
Phone Modem
Adapter (L1)
-S
P E C T R U M
M
O D E M
,
A D I O S
D
I R E C T I O N A L A N D
( Y
A G I
AOM Wires (Yellow, Green, & White)
Modular Cable,
4' (1.2 m)
WeatherLink
PC Radio DB-25
Adapter (L2)
Product # 7632-003, 7632-008 & 7632-912
K
I T
) A
N T E N N A S
Jumper
Battery Wire
Tab Adapter
Modem Configuration
Disc