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Audio Modes

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Jared Boone edited this page Feb 21, 2016 · 5 revisions

An analog audio receiver is available via the "Receiver->Audio" menu path. Common AM and FM modes are implemented.

Narrowband amplitude modulation (AM):

Supported modes:

DSB: Double side band: broadcast AM, 6kHz bandwidth
SSB: Single side band: both upper (USB) and lower (LSB) side bands, 2.8kHz bandwidth

PortaPack AM DSB receiver mode PortaPack AM LSB receiver mode

Narrowband FM:

Supported modes:

8.5kHz bandwidth, 2.5kHz deviation
11kHz bandwidth, 2.5kHz deviation
16kHz bandwidth, 5kHz deviation

PortaPack NFM 8.5kHz receiver mode PortaPack NFM 11kHz receiver mode

Wideband FM

One configuration of wideband FM is supported -- 75kHz deviation, 200kHz bandwidth, with 75us de-emphasis.

PortaPack WFM receiver mode

To be implemented:

CW receive with tunable filter
Record to micro SD card
Transmit functions