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. Tranceiver Receiver test signal
When you press SW4 at reception, a signal of the same frequency as the
reception frequency is output from the SDR-3A board CN2.
If setting "4. Test SG" is OFF, no test signal is output.
When you are watching the received spectrum display, a single spectrum
appears at the center.
The output frequency is the frequency received when SW4 is pressed. Changing
the receiving frequency changes the position of the spectrum, and the beat
sound is heard from the speaker.
You can use this function to find the defective part of the receiving circuit (see
assembly manual 3-5. Operation test BPF troubleshooting).
test signal is at the center of
the spectrum screen
Receiving frequency changed
