Kenwood TS-990S Operation Manual - Page 158
BEAT CANCELLER (SSB, AM AND FM), NR1/SEL], Noise Reduction 1 Sub, MULTI/CH
![]() |
View all Kenwood TS-990S manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 158 highlights
6 REJECTING INTERFERENCE ■ Adjusting the Noise Reduction Levels for the main band 1 Rotate the NR1 or NR2 control to adjust the effect level for the Noise Reduction 1 or the time constant for Noise Reduction 2. Rotating the NR1 or NR2 control clockwise suppresses noise. ■ Adjusting the Noise Reduction Levels for the sub band 1 Press and hold [NR1/SEL] or [NR2/SEL] to open the Noise Reduction 1 (Sub) or Noise Reduction 2 (Sub) screen. BEAT CANCELLER (SSB, AM AND FM) The beat canceller performs digital processing at the AF stage, thus making it possible to suppress a number of periodic interference signals (beat signals) in the receive bandwidth. You can use the beat canceller for SSB, AM, and FM modes. *OUFSGFSJOH8BWF #FBU 5BSHFU4JHOBM Noise Reduction 1 Noise Reduction 2 2 Press [-] (F4) or [+] (F5), or rotate the MULTI/CH control to adjust the effect level for the Noise Reduction 1 or the time constant for Noise Reduction 2. • Noise is suppressed more effectively if a larger value is configured. • The available range for Noise Reduction 1 is from "1" to "10". The default is "5". The available range for Noise Reduction 2 is from "2" to "20". The default is "20". 3 Press [ESC] to exit. Pressing and holding [NR1/SEL] or [NR2/SEL] closes the Noise Reduction 1 (Sub) or Noise Reduction 2 (Sub) screen. .PEFLFZT . 4 1 Press one of the mode keys to select USB, FM, or AM mode. 2 Press [BC] (M) or [BC] (S) to select the Beat Canceller. • Each time you press the key, the beat canceller for the selected band cycles as follows: Off > BC1 > BC2 > Off In the main screen, "BC1" appears above the frequency display of the selected band with Beat Canceller 2 enabled. • In the main screen, "BC2" appears above the frequency display of the selected band if Beat Canceller 2 is active. • If BC1 is configured, it suppresses weak or continuous beat signals. If BC2 is configured, it suppresses intermittent beat signals like CW signals. Note: ◆◆Beat Canceller can suppress the overall audible beat; however, the gain of the target signal cannot be recovered by the AGC function. Therefore, if the beat signal is larger than the target signal, use of the manual notch filter, auto notch filter or band elimination filter may activate the AGC function making the target signal clearly. 6-14 Index Contents
![](/manual_guide/products/kenwood-ts990s-operation-manual-3ab92e4/158.png)