Kenwood TS-990S Operation Manual - Page 135
Adjusting The Rtty Threshold Level Of Psk Decoding, Displaying The Scope To Check Psk Tuning, Fft
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ADJUSTING THE RTTY THRESHOLD LEVEL OF PSK DECODING The background noise on a signal when no RTTY data is being received may be erroneously recognized as a letter, causing unnecessary text to be displayed. The threshold level should be adjusted to reduce or eliminate this symptom. If there are many erroneous detections due to noise, increase the threshold level. d • If [THLD] (F5) is unavailable in the function key guide, press [MORE] (F1). An alternate key guide will appear. 4 Press [-] (F4) or [+] (F5), or rotate the MULTI/CH control to adjust the level. Pressing and holding [(RESET)] (F1) resets the configured parameter to the default. The default is "10". 5 Press [ ] (F1). 6 Press [ESC] to exit. 1 Select Group No. 2, "Decoding & Encoding", from the Menu screen. 2 Access Menu 09, "FFT Scope Averaging (PSK Decode)". 3 Press [SELECT] (F4) to allow editing of the parameter box. 4 Press [-] (F4) or [+] (F5) to select one from "0" to "9". Increasing the parameter maximizes the noise component. The default is "0". 5 Press [ ] (F1). 6 Press [ESC] to exit. Contents Index 5-55
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