General description
The PSK transmitter supports PSK31, PSK63 and PSK125 modes. With the ‘Config’ button you can configure the transmission magnitude & frequency. With ‘Load’ you can load text to be transmitted from a file. Note, that the PSK transmitter automatically converts lowercase letters to uppercase letters. ‘Start/Stop’ starts and stops the transmission. When characters have been transmitted, the Red text ‘Transmitting’ is shown in the dialog. If the Yellow text ‘Ready to Transmit’ is shown, you should press the Green button in the Configuration Editor to start the transmission. With ‘Reset’ you can reset the transmitter. The PSK transmitter shows the currently transmitted character as inverted text. Transmission is always started from the cursor position.
Configuration
Pressing the ‘Config’ button opens the following Configuration dialog box.
Parameters
Mode
This sets transmission mode BPSK31, BPSK63 and BPSK125
Magnitude
With this you can set the magnitude (maximum amplitude) of the transmitted signal. The amplitude value is set as an absolute value. When 16-bit processing is used, the maximum magnitude will be 32767. If 8-bit processing is used, the maximum is 127.
Carrier frequency
This sets the carrier frequency. Note that if transmission is connected directly to one of SkySweeper’s own decoders, the FFT resolution is limited, which might cause the situation when the decoder does not lock exactly to the same frequency which is being sent. This effect has no influence on the performance of the decoder.
Sum to RX
If this switch is selected, the TX signal is added to the block’s input signal. Otherwise, the input signal is muted.
Repeat
With this switch you can set the text in the transmitter dialog to be repeated when the last character has been sent. The repeated block starts from the cursor position.
Macro
The ‘Macro’ button opens or closes the TX macro panel
Load
The ‘Load’ button opens the transmitter load data control Dialog, which is used to read text from a file, or a socket, into the transmission text window.
Start
The ‘Start’ button starts transmission from the cursor position. If there is text selected in the transmission window, only the selected text is sent. It is not possible to edit the transmission window when transmitting. Transmission can be stopped at any time by pressing the ‘Stop’ button. If the TX control signal is enabled, the Start and Stop buttons turn the signal on and off.
Reset
The ‘Reset’ button clears the transmission window and resets the transmitter.
