Ventilation Hood User Manual
Version 4 27 Feb 08 
 3 6 9  12 15  18 21
0 1.5
All Numbers
in GHz.
Antennas
 3-9*
 9-15
 15-21
 4.5 7.5 10.5  13.5 16.5 19.5 
MDC-900 only
*The MDC-900 only covers the band 1 frequency range.
Figure 2: ILLUSTRATION OF THE MDC-2100 DOWNCONVERSION PROCESS 
The OSCOR (version 5.0) displays up to six 1.5GHz (1500MHz) windows simultaneously, 
or the spectrum may be separated into three antenna frequency bands: 3 to 9GHz, 9 to 
15GHz, or 15 to 21GHz with two 1.5GHz windows displayed simultaneously. 
Note: The MDC-900 has a single antenna and covers the band from 3 to 9GHz. 
Built-in microwave filters can reduce the display even further. These filters are referred to 
as Filter A and Filter B. The Identify function allows for the determination of the 
frequency. Below is a chart representing the display of the frequencies in response to the 
selected antenna and microwave filter. Understanding Figure 3 is critical to 
understanding the OSCOR operations using the MDC-2100 and MDC-900. 
Note: The OSCOR always super-imposes the various 1.5GHz windows. 
ANTENNA BAND  Filter A  Filter B  Filter A & B 
(Not applicable for OSCOR 5.0) 
3 – 9GHz 
4.5 -- 6 
6 -- 7.5 
3 -- 4.5 
7.5 -- 9 
4.5 -- 6 3 -- 4.5 
6 -- 7.5 7.5 -- 9 
9 – 15GHz 
(MDC-2100 only) 
10.5 -- 12 
 12 -- 13.5 
9 -- 10.5 
13.5 -- 15 
10.5 -- 12 9 -- 10.5 
12 -- 13.5 13.5 -- 15 
15 – 21GHz 
(MDC-2100 only) 
16.5 -- 18 
18 -- 19.5 
15 -- 16.5 
19.5 -- 21 
16.5 -- 18 15 -- 16.5 
18 -- 19.5 19.5 -- 21 
Figure 3: OPERATIONAL FREQUENCY BANDS 
REI  MDC-2100/MDC-900  4 










