On Tue, Dec 10, 2019 at 06:19 AM, Howard Fidel wrote:
There is no advantage. The 101 points are across the frequency range displayed.
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The advantage comes in how the 101 points are used.
If your original configuration was for 50k -900M, then the 101 measurement points are about 8.9 MHz apart. The stored calibration points are also 8.9 MHz apart. In the 50K- 30M you only have about 4 measurement and calibration points available.
If you change your configuration to 50K-30M, then the 101 measurement points are now about 297 kHz apart. You have better frequency resolution, however; you still have only 4 calibration points available and a lot of interpolation will be involved. This can result in quite inaccurate VSWR readings and demonstrates why it is important to re-calibrate when you change your frequency range.
- Herb
