Helaas in het engels maar een goede uitleg over de filters:
The expression means “Use the Global Filter Setting” which will be whatever you have set the filter to in the Global Setting menu.
The soft filter settings are counter intuitive but it allows you to set filters differently for each band or mode depending on your need, mode, band or list.
Incorrect filter settings will make a good radio deaf especially in this implementation of SDR.
I have 32 FLs each for a different purpose or band/mode.
None of these can use one specific Soft Filter!
AM Air is particularly affected as parts of the band are 8.33 kHz channelised so transmissions lean to one side of the original allocation and these being AM are better heard using the Wider Filter Settings.
NFM Digital however uses much narrower deviation and an inherited “Wide Invert” setting from the Global Filter can prevent the Rx from getting a constant Bit Rate for Digital Decode so these need a “Normal” or “Off” setting.
The absolute worst setting on the SDS for anything is “Auto”….
This slows the scanner to a crawl whilst at every frequency change it tries to analyze the current signal before passing anything on to the A to D circuit making it appear deaf!
If your FL entries are using “Global” as the default the Global Filter Setting must be correctly set for the channel in use, or you get 💩
For Narrow Band use, the inherited filter needs to be Normal or Off and the mode NFM or decode will be impacted as the AGC will not work correctly.
When setting filters it’s easier to see wats going on if you have the Custom Display set to show what setting is being applied to the current Frequency/Channel.
This is also one of the few places the Waterfall function would be used to determine the best Filter settings for a given mode/channel.
Set correctly both my SDS radios never miss a Tx even on Digital and Airband VHF.
Most of the time they spend monitoring either VHF T3 Trunked DMR or UHF AM Mil Air over the North Sea at full speed.
