Point to Point Telecom, LLC
Specializing in Engineering of Radio Frequency Systems & Equipment
Accessories for GE MDS SD9 928 - 960 MHz Licensed Data Radios
Omni-Directional Antennas -
We suggest buying the very best antenna for your main or master
station, as all communications comes and goes through this single
antenna. There are several very good antenna manufacturers which includes
Sinclair Technologies, RFS, dbSpectra, Commander Technologies, and
Telewave. My preference is Sinclair Technologies for the master antenna. There
are several issues to consider when deciding which model and brand to
purchase. These are outlined on the antenna page, with the link below. Specifications are located HERE. note: A flexible jumper usually made with 16" of RG-214/U and two silver-plated crimp Type-N connectors, connects the antenna to the 7/8" Heliax cable.
SINCLAIR SC-488 928-960 MHz Collinear Omni Ant, 10 dBd Gain, 0 Degree Downtilt - $1,690
Yagi Beam Antennas -
We suggest using the Laird YB8966 black anodized 6 element antenna. We
prefer this as the black anodized coating sheds ice better than other
antennas, and is non-reflective. It has a sturdy mounting bracket
and the connector is a female Type-N, built into the end of the mast.
Specifications are HERE.
Includes heavy duty cast aluminum bracket accommodates up to 2-1/2”
mast. Has gain of 9 dBd, or 11.2 dBi. Generally, these are
mounted to a 1.5 to 2.5 inch pipe. Laird fully welded, black anodized
directional Yagi antenna with 6 elements, 896-970 MHz, . $150
Battery Backed AC Power Supplies -
We prefer the battery backed MeanWell DRC Series of AC supplies, that
can be DIN rail mounted. These are inexpensive and available in
12 or 24 VDC output, with a separate connection for a backup battery.
The input is auto-ranging from 90 to 264 VAC, so it will easily
take power surges on the AC line. We suggest the 60 watt version
to power a single SD9 Radio and the 100 watt version for two SD9
radios. This will allow for sufficient margin to charge the
batteries and run cool. The specifications for the DRC-60 are HERE and the specs for the DRC-100 are HERE. Battery is not included. See your local battery store. The pricing does not include taxes or shipping.
12 VDC - 60 Watt DRC-60A sells for $39.95
12 VDC - 100 Watt DRC-100A sells for $49.95
24 VDC - 60 Watt DRC-60B sells for $39.95
24 VDC - 100 Watt DRC-100B sells for $49.95
Coaxial Cable -
We suggest using Heliax solid copper [with plastic jacket] cable
for all Master station installations and any remote with a cable run of
more than 50 feet. Otherwise, for short remote station installs, we
suggest using LMR400 style cable with crimp connectors. Heliax
cable comes in various diameters, but we suggest using what is
considered 1/2 inch for runs up to 100 ft, and 7/8 inch for 100 ft or
longer runs. The master station should always use 7/8" cable up
to 150 ft, and larger Heliax if longer. Heliax cable is cut to order
and connectors are attached at that time. The connectors can be
removed and replaced easily with normal hand tools should the cable
need to be routed through the wall. 1/2" Heliax with two female Type-N connectors is $xx, plus $xx for each foot of cable
7/8" Heliax with two female Type-N connectors is $xx, plus $xx for each foot of cable
LMR400 with one male and one female Type-N connector - 25 Ft. is $xx
LMR400 with one male and one female Type-N connector - 50 Ft. is $xx
Weather Seal Kit for coaxial cable - We suggest using
Click HERE for our GE MDS SD9 page
Click HERE for our antenna advise page
For purchase of equipment or accessories
Point to Point Telecom, LLC
Post Office Box 9227
Newport Beach, CA 92658
Or email us at
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