Operations and Maintenance Manual

JANUS

Multi-Protocol Reader 2.4 Appendix

Confidential UM 360467-110 Revision: B Page 244 of 247

All information contained herein is proprietary to, and may only be used with express, written permission from, Kapsch TrafficCom Canada Inc.

FILE: UM 360467-110 REV B3 MPR 2.4 CLEAN.DOCX 03/02/2021 1:01

Kapsch TrafficCom

In addition the following rules apply for FDM protocols:

The same channel frequency should not be used on adjacent lanes, including straddle and shoulder lanes

(recommended at least 24 ft separation between in-line antennas and 21 ft. separation between staggered

arrangement antennas).

The frequency spacing used shall be at least 2.5 MHz between adjacent antennas (i.e. in-line or straddle

antennas).

For 6C read in ORT an in-line configuration can be used. For all other FDM protocols in ORT and for 6C

write in ORT a staggered configuration should be used.

For the in-line and staggered antenna configurations outlined in Installing a Lane Kit, page 156, this means that

a 4 or more channel frequency plan (i.e. can repeat every 5

antenna) must be used for in-line configurations

and a 3 or more channel frequency plan (i.e. can repeat every 4

antenna) must be used for staggered

configurations.

For example within the FCC limits and a staggered ORT antenna configuration a suitable selection can be made

that covers all protocols with the following ranges

F2 (+2.5 MHz)

F3 (+5.0 MHz)

911.5 to 914.5

914 to 917

916.5 to 919.5

For example using this, a larger 7 channel frequency plan can be easily realized respecting all the rules on a

staggered site.

Antenna #

1 2 3 4 5 6 7

Position

Main Straddle Main Straddle Main Straddle Main

Frequency (Mhz) 911.5 914 916.5 919 911.5 914 916.5