TX "TONE" Control Levels
The TX TONE control adjustments are very effective on this rig and are adjustable for both BASS and TREBLE by up to plus and minus "5" on the rig's display but unfortunately there is no way of knowing what the level changes are for each of the positions.
I decided to make a table of these levels at 300c/s for the BASS and 2.5Kc/s for the TREBLE using a signal generator and scope in the SSB mode. As I suspected by "on air" tests the TREBLE has a very wide range of adjustment whereas the BASS has a quite limited range.
The table below shows the "Plus" levels only, the "Minus" levels are similar but are of course negative quantities.
TX Treble
IC-7300 dB Increase
+1 3
+2 8
+3 15
+4 25
+5 30
TX Bass
IC-7300 dB Increase
+1 2
+2 3
+3 4
+4 6
+5 8
These figures were obtained with my IC-7300 and as such are reproduced here as a guide, there may of course be some variation from rig to rig and so this must be borne in mind.
Most people have found that using the supplied microphone the TREBLE needs to be set to +3 or +4 and the BASS to -1 or -2 with the COMP on at a level of 2 or 3.
IC-7300 dB Increase
+1 3
+2 8
+3 15
+4 25
+5 30
TX Bass
IC-7300 dB Increase
+1 2
+2 3
+3 4
+4 6
+5 8
These figures were obtained with my IC-7300 and as such are reproduced here as a guide, there may of course be some variation from rig to rig and so this must be borne in mind.
Most people have found that using the supplied microphone the TREBLE needs to be set to +3 or +4 and the BASS to -1 or -2 with the COMP on at a level of 2 or 3.
