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Noise burst at beginning of transmission
When transmitting using SSB, there is a loud nosie burst the beginning of every transmission. It appears to be the transmit audio buffer filling with the ambient noise of the room (rx audio from the speakers) just prior to the beginning of the transmission.
If I use headphones, so there is no ambient noise in the room, then there is no noise burst at the beginning of my transmission. However, if I am using the speakers to listen to the receiver, then go and key the transmitter, the last 500ms or so of receive audio appears to be transmitted.
If I increase the TX delay setting in the main setup TX window, to a value of 400-500ms, I can eliminate the noise burst on my transmissions, but then I have a corresponding 400-500ms delay in TX-to-RX transition, which is not good.
I did not have this issue with my prior SDR radio, nor does it exist with my other traditional transceivers. It appears the tx audio buffer is enabled prior to PTT being engaged.
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