- #What is rtty on ham radio software#
- #What is rtty on ham radio license#
- #What is rtty on ham radio tv#
But modulation modes are a little more ethereal to us since it involves manipulation of invisible and strangely behaving radio frequency waves of electromagnetic radiation. What’s Modulation? The operating mode concept is pretty easy to grasp – you are typically speaking into a microphone, tapping out some code, or keying a computer. This may be characterized as a blend of a digital operating mode with CW modulation mode.
#What is rtty on ham radio software#
Computer software is available that will encode and decode CW for you, allowing you to use a computer keyboard and monitor to send and receive Morse Code by CW modulation mode. The ICOM D-STAR mode is one example of digital phone. That is, your voice is converted into digital signals to be transmitted by a digital modulation method over the air. For instance, there are digital phone modes. But sometimes things get scrambled together a little more. The table above is a somewhat simplified view of operating modes and the affiliated modulation modes.
#What is rtty on ham radio tv#
Slow Scan TV (SSTV), Fast Scan TV (FSTV – NTSC standard) Usually continuous wave (CW) is lumped into the digital modulation mode category as well, even though it is unique as a manually implemented operating mode using a key to tap out Morse Code signals.
Another example: PSK31, Packet Radio, Radio Teletype (RTTY), and Multiple Frequency Shift Keying (MFSK) are specific modulation modes that can each be implemented with, or characterized as, a digital operating mode. Each of these three modulation modes (FM, AM, SSB) may be used with the phone operating mode. For example, a transceiver may affect frequency modulation(FM), amplitude modulation (AM), or single sideband modulation (SSB) to encode your voice into the radio transmission. Modulation Mode – A modulation mode refers to the specific method by which information is encoded into the radio emissions. Key concept here: An operating mode may be carried out with one or more individual modulation modes. In digital modes you are using a computer (or other electronic device) to send encoded signals, and in video modes you transmit and receive specially formatted video stream signals. Other general operating modes include the digital modes and video modes. Hence, you will hear hams referring to “phone mode” or “the phone modes,” meaning an operation in which the operator is speaking into a microphone and pumping voice signal out over the airwaves. For example, the term “phone” refers to using your voice on the radio. Operating Mode – An operating mode is a description of what you, the operator, are doing to send and receive signals.
It boils down to whether you are referring to a type of general radio operation or to a specific type of signal modulation, as follows: The two different meanings are often scrambled together in conversation, and the definitions do overlap somewhat. What’s a Mode? The term “mode” really has two meanings in ham radio. Afterwards you’ll be ready to answer those puzzled looks emanating from your fellow newbies! Then we’ll sprinkle in the relationships with frequency and bandwidth.
So, let’s carefully dissect this matter of modes, disentangle the terms and the implications, and provide a few solid examples that we can all latch onto. Couple an introductory discussion of modes with frequency bands or signal bandwidth topics and you’ll mostly get slowly shaking heads. In the Technician Class that I teach regularly along with several other experienced hams it is always the subject of many questions and the source of puzzled expressions.
#What is rtty on ham radio license#
It never seems to fail to confound the beginner studying for the Technician Class license – modes. “Yea, me either,” follows a comforted chorus, each student relieved that it’s not just them having a little trouble.