FlexRadio Systems FLEX-6000 Signature Series User Manual

FLEX-6000 Signature Series - SmartSDR for Windows Software User’s Guide
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20.3.6 How to Configure the Downward Expander (DEXP)
The Downward Expander reduces the microphone input gain during the quiet periods between
spoken words, eliminating extraneous background noise. This improves the apparent signal to noise
ratio of your transmitted audio by “soft gating” ambient room noise between words.
To adjust the DEXP, Enable DEXP and move the DEXP Threshold slider to 0. While transmitting, and
listening with MON without speaking, adjust the DEXP Threshold until you can no longer hear the
background or ambient noise at your operating position. In most cases a DEXP threshold level of 60-
70 should be sufficient.
20.4 MONITORING YOUR TRANSMITTED AUDIO
The Quick Record and Playback feature in SmartSDR can be used to monitor your transmitted audio.
The audio recorded in this manner represents transmitted audio using all the enabled signal
processing features so that adjustments can be made to optimize your transmitted audio.
• Connect your radio to a dummy load and switch the transmit antenna to the appropriate
antenna connector or turn down the power output to 1W (a setting of 0W will not transmit
any audio)
• Click MOX or press PTT to enable the transmitter
• Click the RECORD icon (red dot) on the slice that has the transmitter enabled. It will flash
when recording.
• Talk normally into the microphone.
• When done, click the RECORD icon to stop recording. The PLAY icon (green triangle) will
illuminate.
• Click the PLAY icon to play back the transmitted audio.

FlexRadio Systems FLEX-6000 Signature Series Specifications

General

Brand	FlexRadio Systems
Model	FLEX-6000 Signature Series
Category	Transceiver
Language	English