Expert Electronics MB1

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MB1 User Manual

MAIN SCREEN DESCRIPTION

· High – high front filter's frequency.

· Offset – frequency offset.

Used for work in digital modes. Frequency offset requirement depends on the used digital

mode program. Look at the instruction of your digital mode program.

· Sync with RX - Галка

NFM - Narrow band receiver FM settings.

· Deviation - FM deviation.

Width of the FM signal in air will be two times more than deviation.

· High - Frequency of the high filter slope of the LF signal before FM demodulator.

Set the required LF signal width from zero up to high filter edge.

Voice Recorder - Settings of the internal dynamic's playback level.

· Volume for TX - internal dynamic's volume.

Set this parameter so that the signal on MIC-meter would reach -10...-5 dBW values (more

details in Voice Recorder Operation ).

TX Filter Taps - Transmit Filter Taps settings.

· SSB - Filter Taps in SSB mode.

· AM/NFM - Filter Taps in АМ mode and narrowband FM.

· DIGL/DIGU - Filter Taps in DIGL and DIGU modes.

PA control - External PA control settings.

· Enable PA in Tone mode - Checkbox to enable the TX mode of the external PA in the Tone

mode (transmission of the carrier frequency).

Set the Enable PA in Tone mode checkbox to enable the TX mode for the external PA

while transmitting the carrier frequency. This mode might be useful to tune the building-out

network of the external PA.

High SWR protection - Trigger threshold of the transceiver's high SWR protection in the TX

mode.

· - Protection trigger threshold by SWR.

Warning!

i Increasing the protection trigger threshold by SWR more than 4, may lead to

transceiver failure!

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Expert Electronics MB1 - Page 73