HomeMy WebLinkAbout07-17-2012 C2 MattinglyRECEIVED
JUL 17 2012
i council memoRAnb Ciw CLERK
crty of san Luis owspo, abmmistRation aepaRtment
DATE: July 17, 2012
TO: Mayor and City Council
VIA: Katie Lichtig, City Manager
FROM: Carrie Mattingly, Utilities Director
AGENDA
CORRESPONDENCE
Date? 1' -111 item# C a-
SUBJECT: Radio Survey, Attachment B -July 17, 2012, agenda Item C2
Attachment B, Radio Survey, to Request for Proposals for the Design Services for SCADA
System Upgrade Project, Specification No. 91062, is attached.
Documentl
COMMUNICATIONS
CELLULAR * PAGING * TWO -WAY RADIO * SALES * SERVICE
Steve Schmidt
City of San Luis Obispo
San Luis Obispo, CA 93401
July 11, 2012
Dear Steve:
Attached is the information compiled during the RF survey for telemetry utilizing the City's existing 900
MHz, 4 Watt, GE MDS radios to transmit with and our calibrated spectrum analyzers to record signal strength
readings. We used an Omni directional antenna with 20 feet of RG213 for the potential fiber node sites and a
6dB gain yagi with 20 feet of RG213 for the remote sites. Testing was done on your existing repeater input
frequency for WWCS. Grid coordinates were verified and recorded. For this area, WGS84 Datum and
NAD83 Datum are the same.
The attached spreadsheet shows the signal strength measured in both directions for each remote site and
potential fiber node. The readings colored green are excellent, the readings in yellow potentially marginal and
the readings in red we need to find alternatives for.
Please don't hesitate to call if I can answer any further questions for you.
Thank you for considering Sterling Communications for your communication needs.
Sincerely,
Alex R. Weidner
P.O. Box 1320, Arroyo Grande, CA 93421 * 2232 S. Depot St. #G, Santa Maria, CA 93455 Tel: (805) 489 -2256 * (805) 739 -9259 FAX: (805)
739 -5349
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