|Filter Selection Screenshots||Operating Screenshots (Filter Selected)|
|Fig.1: 800Hz non-BPF. BW icon: long baseline.||Fig. 2: 800Hz non-BPF. Trapezoidal BW icon.|
|Fig.3: 450Hz BPF. BW icon: short baseline.||Fig.4: 450Hz BPF. Keystone BW icon.|
|Fig.5: 500Hz non-BPF. * = set via Twin PBT.||Fig. 6: 500Hz non-BPF. Trapezoidal BW icon and *.|
On the IC-746Pro filter selection screen, the exact equivalent of the BPF Indicator is a short baseline below the BW (IF passband icon) in the bottom section of the display. This is illustrated in Figure 3.
On the IC-746Pro operating screen, the exact equivalent of the BPF Indicator is a keystone-shaped IF passband icon in the bottom right-hand corner of the display (above SCP). This is illustrated in Figure 4.
On the IC-746Pro filter selection screen, a long baseline below the BW (IF passband) icon in the bottom section of the display indicates a non-BPF shape factor. This is illustrated in Figures 1 and 5.
On the IC-746Pro operating screen, a trapezoidal IF passband icon in the bottom right-hand corner of the display (above SCP) indicates a non-BPF shape factor. This is illustrated in Figures 2 and 6.
If the initial filter bandwidth setting > 500 Hz, and the bandwidth is then reduced to 500 Hz or less by offsetting the Twin PBT controls, the filter will have a non-BPF shape factor (as in the IC-756Pro II). The filter selection screen (Figure 5) will show a pair of offset BW icons with a long baseline (indicating non-BPF), and an asterisk (indicating that Twin PBT is offset from zero shift.)
For the case described in Note 5 above, the operating screen will show a trapezoidal IF passband icon with the asterisk to the right of it.
If the Twin PBT controls are offset to reduce the bandwidth of a filter which already has a BPF shape factor, the screens will be similar to those in Figures 5 and 6 except for a short baseline in the filter selection screen and a keystone-shaped passband icon in the operating screen.
Click here for further information on the BPF Indicator feature. Also refer to the IC-746Pro User Manual, pages 50 & 52.
Copyright © 2003 A. Farson VA7OJ/AB4OJ. All images copyright © 2003 George T. Baker W5YR. All rights reserved. Last updated 09/25/19