HF Band

50MHz Band

 

 

440MHz Band

 

 

 

 

 

 

 

144MHz Band

1200MHz Band

 

 

 

 

 

 

AF Digital Signal Processing

DSP is also executed at the AF stage, offering Beat Cancel and CW Auto Tune functions. It also enables you to achieve remarkable noise reduction and apply custom enhancements to your transmitted voice.

Beat Cancel

Automatic Beat Cancel, avail-

 

Canceled

 

 

 

 

 

 

 

 

 

able for the main band (SSB

Beat

Beat

Beat

and AM modes), immediately

 

 

 

 

eliminates multiple beats

 

 

 

 

interfering with a desired signal.

 

 

 

 

It works well in combination

 

 

 

 

Target signal

 

with IF Auto-Notch (SSB).

 

 

 

 

Noise Reduction

There are 2 types of noise reduction: LEM (NR1) and SPAC (NR2). LEM (Line Enhancer Method) — available for all modes on the main band and FM/AM on the sub band — automatically forms a filter shape around the target signal for a custom, dynamic noise reduction capability. The degree of enhancement can also be set manually for main- band use. The SPAC (Speech

Processing/Auto Correlation)

Line Enhancer Method

 

 

Formed filter

 

function utilizes a special sta-

 

 

Noise

Noise

tistical/correlation algorithm

 

 

 

to pull out weak signals that

 

Signal

 

are buried deep in noise.

 

 

 

 

 

 

 

 

Although available for all

SPAC Method

 

modes on the main band, it’s

 

Extract signal

 

 

from the noise

 

Manual Beat Cancel

A new Manual Beat Cancel function, which operates as a manual AF notch, can be used in all modes — though it is particularly effective in CW.

CW Auto Tune

Frequency [Hz]

-500 -400 -300 -200 -100

0

-100 200 300 400 500

0.0

 

 

10.0

[dB]

20.0

30.0

Attenuation

40.0

50.0

60.0

especially useful for tough CW

Noise

 

 

Noise

 

 

 

 

conditions. The correlation

 

 

 

 

 

 

 

 

time setting can be adjusted

 

 

 

 

in 10 steps between 2ms and

 

 

 

 

 

 

 

 

20ms.

 

Signal

 

 

 

 

TX Audio Shaping

You have 3 ways to tailor audio quality with DSP: the

You no longer have to adjust

70.0

80.0

the VFO while operating on

 

CW — CW Auto Tune does it

 

for you automatically by adjusting

 

the VFO to your preset pitch at the

 

touch of a button.

 

TX/RX equalizer (SSB/FM/AM), TX filter bandwidth (SSB/AM), and speech processor (SSB/FM/AM). The TX/RX equalizer offers 4 frequency response settings on SSB, FM and AM: high boost for improved clarity, formant pass to minimize extraneous sounds, bass boost for stronger sound, and conventional mode for an ‘analog’ sound. On SSB and AM transmit you can choose between 6 TX filter

bandwidth settings according to your microphone and operating requirements. The speech processor works

across three bands (SSB, FM and AM) for high compression and minimal distortion.

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Kenwood 2000X manual AF Digital Signal Processing