How does a SSB receiver work?

SSB receiver

This generates a carrier signal that can be mixed with the incoming SSB signal, thereby enabling the required audio to be recovered in the detector. Typically the SSB detector itself uses a mixer circuit to combine the SSB modulation and the BFO signals.

How does a SSB transmitter work?

In radio communications, single-sideband modulation (SSB) or single-sideband suppressed-carrier modulation (SSB-SC) is a type of modulation used to transmit information, such as an audio signal, by radio waves. A refinement of amplitude modulation, it uses transmitter power and bandwidth more efficiently.

What is an SSB receiver?

SSB (Single Sideband) is an obscure but very important way to communicate via radio. It is used primarily for two-way voice communication by ham radio operators, aircraft and air traffic control (ATC), ships at sea, military and spy networks. Occasionally some shortwave broadcast stations use this format.

How is SSB signal generated?

a phasing generator. The phasing method of SSB generation is based on the addition of two DSBSC signals, so phased that their upper sidebands (say) are identical in phase and amplitude, whilst their lower sidebands are of similar amplitude but opposite phase.

Is SSB better than AM?

An SSB radio transmitter suppresses the carrier and one of the redundant sidebands, and thus transmits the operator's voice in less than half the bandwidth of an AM signal, and with much more efficient use of energy.

Ham Radio Basics--What is SSB and How to Tune in SSB

What are the disadvantages of single side band transmission?

What is the main disadvantage of SSB?

Disadvantages of SSB-SC Modulation

The SSB transmitter and receiver need to have an excellent frequency stability . A slight change in frequency will hamper the quality of transmitted and received signal . Therefore, SSB is not generally used for the transmission of good quality music.

What are the two ways of generating SSB wave?

The two methods of SSB generation are (i) frequency discrimination method and (ii) the phase discrimination method. The frequency discrimination method of SSB generation given in figure 1, is based on suppressing one of the sidebands from the double-side-band suppressed carrier (DSB-SC) modulated waveform.

Why is SSB not used for broadcasting?

When carrier is shifted to bandpass, this one sided bandwidth becomes 9 MHz. This is nearly ten times as large as the total bandwidth occupied by all the channels of the AM radio. Use of SSB modulation would cut this in half but SSB is not used for video signals because of the complexity of the SSB receivers.

Are SSB radios still used?

As satellite communication equipment becomes more reasonably priced, more reliable, and more compact, we often hear sailors raise the question, Are single-sideband radios even relevant anymore? As Lanier points out, the question is easy to answer: Yes, absolutely.

What is the difference between SSB and FM?

Firstly, FM is a constant-envelope modulation, meaning the amplitude is constant. SSB, being a kind of amplitude modulation, obviously does not have a constant amplitude. Consequently, FM can employ a non-linear amplifier which is more power efficient, and thus has a longer battery life in mobile operation.

Why SSB transmission is preferred?

It comes in useful because the baseband video signal is wide (typically 6 MHz). To transmit this using AM would require a bandwidth of 12 MHz. To reduce the amount of spectrum used, one sideband is transmitted fully, whereas only the lower frequencies of the other are transmitted.

Is SSB FM or AM?

What is SSB? Single sideband is a special form of amplitude modulation (AM). What's so 'special' about it? Besides just encoding voice information with variations in signal amplitude, or power, SSB consumes a little less than half the bandwidth of a full “double band” AM signal.

What are the advantages of SSB systems?

Sideband Modulation − Advantages

Bandwidth or spectrum space occupied is lesser than AM and DSB signals. Transmission of more number of signals is allowed. Power is saved. High power signal can be transmitted.

Which is better DSB or SSB?

We can see that the SSB transmission does not suffer from the effect of power fading induced by fiber dispersion, while the DSB has a high tolerance to power fading, due to the low frequency of RF carrier [8] . The DSB has a better performance than SSB under short distance because of double sideband. ...

What frequencies are SSB?

A marine SSB system operates on marine radio spectrums called shortwave, medium frequency and high frequency — 2 MHz-26 MHz. This radio spectrum is shared with hundreds of other radio users including shortwave broadcasts, Ham radio, FEMA, the American Red Cross, and long-range aircraft.

What frequencies do ham radio operators use?

For ham radio operators, you'll use the frequency range from 420 – 450MHz. Unlike the reliability of VHF radio waves, UHF has a much shorter wavelength and is prone to interference from basically any solid object, whether that's a building blocking your signal or even your body.

Why are sidebands made?

When the signal is modulated onto the carrier in the electromagnetic spectrum, that signal occupies the small portion of the spectrum surrounding the carrier frequency. It also cause sidebands to be generated at frequencies above and below the carrier frequency.

Is 30 meters upper or lower sideband?

The higher frequency bands above the 30 meter band (20m, 17m, 15m, 12m, 10m, VHF, and UHF bands) utilize the upper sideband (USB), while the lower frequency bands below 30 meters (40m, 80m, 160m) use the lower sideband (LSB).

How far can a SSB radio transmit?

SSB (Single Sideband) radio has a much greater range than a VHF (Very High Frequency) radio's typical 35 to 50 nautical miles. Medium Frequency (MF) SSB radio has a range of around 400 nautical miles, but High Frequency (HF) will reach out for several thousand.

Is SSB the same as ham radio?

Hams use the same type of SSB but on ham frequencies. The Coast Guard uses SSB, mostly on marine channels, but in an emergency they can also call out to all ham radio operators on ham frequencies.

What is the difference between SSB and CB?

A CB radio does not require a license to operate. CB service operates on 40 shared channels in an AM mode or Single SideBand (SSB) mode. SSB offers less noise and greater range than AM mode and is usually found on higher end CB radios. SSB has two modes, Upper Sideband and Lower Sideband.

Why mechanical filter is most commonly used in SSB generation?

Mechanical filters are most commonly used in SSB generation.

Its purpose is the same as that of a normal electronic filter such as to pass a range of signal frequencies, but to block others. The filter acts on mechanical vibrations which are the analogue of the electrical signal.