When you got to PSK31, you used an acronym I found ambiguous. I’m hoping you’ll clarify it’s meaning. I come from a computer background thus when I’m using a computer “USB” is Universal Serial Bus. However, I know enough about radio to know that there is an “Upper Side Band” mode sometimes used. Somewhere (I can’t recall why) I’ve got the notion that Lower Side Band is preferred for phone and Upper Side Band for data of all sorts. So were you talking the computer connection type or which side of the carrier the signal is biased? (Or am I all wet altogether?)
Hi, Dain. In this case it is "Upper Sideband." For phone, the convention is "everything above 30 meters goes on upper sideband." Below 30 meters, it is a bit more complicated. By law, only upper sideband may be used on the 60-meter band. Otherwise, everything below the 30-meter band is lower sideband for phone. There's no phone allowed on the 30-meter band -- it is for RTTY (radioteletype) and data only. Aside from the 60-meter band -- which is a special snowflake in more ways than this -- there's no technical reason for the USB/LSB preferences -- it is just convention. Other modes have different rules. RTTY, for instance, is always transmitted on LSB, regardless of the band. Digital HF modes, as noted in the video, are always transmitted on USB, regardless of the band. (Technically speaking, RTTY and even CW -- Morse code -- could be interpreted to be "digital", but they are treated as separate modes from such modes as PSK31, FT8, etc.) Without these conventions, tuning up and down the bands searching for transmissions would be an exercise in constantly switching from USB to LSB.
AF7KB Fast Track Ham Radio Thank you for clearing that up. If not for having to connect a computer to the transceiver Universal Serial Bus wouldn’t have made sense in context.... and I’m old enough to remember RS-232 ports being commonplace. Then again, I’m also old enough to remember a time when Gene Cernan and Harrison Schmitt were much better remembered.
Just a thank you. Bought your audio book. Fast track tech and general. On 9/10/2019 I passed both test the same night. Now the wait for call sign.
A very good informative and entertaining presentation. Thanks for this. M7MDO
Hey thanks for this! Excellent presentation.
do you do the audio book in video form ? Thank W5RKA Rodger Roswell NM
Terrific as usual.
When you got to PSK31, you used an acronym I found ambiguous. I’m hoping you’ll clarify it’s meaning.
I come from a computer background thus when I’m using a computer “USB” is Universal Serial Bus. However, I know enough about radio to know that there is an “Upper Side Band” mode sometimes used. Somewhere (I can’t recall why) I’ve got the notion that Lower Side Band is preferred for phone and Upper Side Band for data of all sorts.
So were you talking the computer connection type or which side of the carrier the signal is biased? (Or am I all wet altogether?)
Hi, Dain. In this case it is "Upper Sideband." For phone, the convention is "everything above 30 meters goes on upper sideband." Below 30 meters, it is a bit more complicated. By law, only upper sideband may be used on the 60-meter band. Otherwise, everything below the 30-meter band is lower sideband for phone. There's no phone allowed on the 30-meter band -- it is for RTTY (radioteletype) and data only. Aside from the 60-meter band -- which is a special snowflake in more ways than this -- there's no technical reason for the USB/LSB preferences -- it is just convention. Other modes have different rules. RTTY, for instance, is always transmitted on LSB, regardless of the band. Digital HF modes, as noted in the video, are always transmitted on USB, regardless of the band. (Technically speaking, RTTY and even CW -- Morse code -- could be interpreted to be "digital", but they are treated as separate modes from such modes as PSK31, FT8, etc.) Without these conventions, tuning up and down the bands searching for transmissions would be an exercise in constantly switching from USB to LSB.
AF7KB Fast Track Ham Radio Thank you for clearing that up. If not for having to connect a computer to the transceiver Universal Serial Bus wouldn’t have made sense in context.... and I’m old enough to remember RS-232 ports being commonplace. Then again, I’m also old enough to remember a time when Gene Cernan and Harrison Schmitt were much better remembered.
FT8 will destroy Amateur radio as we all grow up and knew of ham radio
I guess the best we can do is enjoy ham radio while it is here since it has apparently been eminently doomed for at least the last 50 years.