Filters & Bandwidth
The sBitx provides smooth, ring-free filtering, allowing skilled operators to use filters effectively to isolate weaker signals.
Narrow Bandwidth Reception
A narrow bandwidth reduces surrounding noise, though excessive narrowing can make the signal difficult to understand.
FT8 Filter
For FT8, set the filter to 4 KHz. This wider bandwidth allows the sBitx to capture nearly double the signals of a conventional analog radio and avoids the need for SPLIT to transmit or receive far from the base frequency.
SSB Filters
Filters ranging from 1.8 KHz to 3 KHz work well for SSB, with 2.2 KHz being a versatile choice for all voice modes, including SSB.
CW, RTTY, and PSK31 Filters
For CW, both wide and narrow filters are useful. Use a wider filter when searching for CW signals. A very narrow filter, like 200 Hz, with 1 KHz step size may skip signals in the remaining bandwidth. A wide filter helps in initial signal detection.
Once a signal is selected, switch to a narrower tuning step size (10 Hz is optimal), apply a narrower filter (e.g., 400 Hz), and center the signal within the bandwidth for optimal decoding and audio clarity.
Recent Comments