Columbia City

Fort Wayne

Indianapolis

SCADA Propagation Studies

J & K is known for designing, supplying, and servicing quality data and voice radio communication systems. We have performed numerous physical propagation studies and have covered most of Indiana, Southern Michigan, various areas of Ohio, Kentucky, and even one physical propagation study on the island of Maui. This experience includes a wide variety of terrain and vegetation from very rural to large cities.

The physical portion of a study consists of transmitting a calibrated 150 MHz, 450 MHz or 900 MHz MAS or Spread Spectrum signal from one end of every path. The transmitting antenna system will exhibit the same overall gain as the proposed systems locating the antenna in it's proposed location. The signal level is measured at the other end of the path at various heights at the exact proposed location. The optimum time of year to perform studies is during the season when leaves are fully developed, providing the highest resistance to RF propagation normally found through the year. These conditions facilitate the most accurate and useful study.

J & K also provides system design recommendations and recommended antenna heights including the following considerations:

1. Reliable communications paths year round for all RTU sites to its respective master station

2. 15 year path design goal

3. Specialized antenna systems such as top mounted water tower antennas designed to eliminate welding to tanks

A radio design diagram is included with each study which depicts the system layout and includes the recommended antenna heights. The intent of the diagram is to provide a non-technical view of the entire system at a glance. The installer must always measure the received signal strength and adjust the antenna orientation and height in order to maintain system integrity.

Also included in our reports are site drawings, site pictures, all signal strength readings taken during the study, longitude and latitude coordinates, and the antenna orientation.