Should I use upper or lower sideband?

It is generally accepted that Upper Sideband, USB is used on frequencies above 10 MHz and that Lower Sideband, LSB is used in frequencies below 10 MHz. Single sideband is available for use on most of the HF amateur radio bands

radio bands

The radio spectrum is the part of the electromagnetic spectrum with frequencies from >3 Hz to 3,000 GHz (3 THz). Electromagnetic waves in this frequency range, called radio waves, are widely used in modern technology, particularly in telecommunication.

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Radio spectrum - Wikipedia

, although some bands and frequencies are narrow and do not allow the use of SSB.

What is the difference between upper sideband and lower sideband?

The signal components above the carrier frequency constitute the upper sideband (USB), and those below the carrier frequency constitute the lower sideband (LSB). All forms of modulation produce sidebands.

Is 40 meters upper or lower sideband?

To make communications consistent and to keep bandwidths to a minimum, the convention is to use lower sideband (LSB) communications for the longer wavelength (lower frequency) bands at 160, 75, and 40 meters.

When should I use USB and LSB?

Frequencies for LSB and USB in amateur radio voice communication. When single-sideband is used in amateur radio voice communications, it is common practice that for frequencies below 10 MHz, lower sideband (LSB) is used and for frequencies of 10 MHz and above, upper sideband (USB) is used.

Is 30 meters USB or LSB?

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).

PART 14 Shortwave for Beginners Why Single Sideband SSB USB LSB explained

Who uses SSB radio?

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.

Is 6 meters upper or lower sideband?

The 6-meter band is the lowest portion of the very high frequency (VHF) radio spectrum internationally allocated to amateur radio use.

What is the main benefit of SSB?

The advantage of SSB is its narrow bandwidth and higher power efficiency than the other voice modes. The Other Options: The wide bandwidth of FM provides a higher fidelity, while the fidelity of SSB suffers with narrower bandwidth, so option 'A' is out.

Is a CB supposed to be on AM or FM?

The FCC rules did not allow FM transmissions on CB radios, which only offer AM and single sideband modes. AM is used for most CB communications.

Why do most amateur stations use lower sideband on the 160 meter 75 meter and 40-meter bands?

To make communications consistent and to keep bandwidths to a minimum, the convention is to use lower sideband (LSB) communications for the longer wavelength (lower frequency) bands at 160, 75, and 40 meters.

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.

Do Cobra CB have SSB?

The Cobra® 148 GTL is a full featured radio with 4 watt AM and 12 watt SSB operation.

What is upper and lower sideband on a CB radio?

The range of frequencies below 27.185MHz is called the Lower Sideband (LSB). The range of frequencies above 27.185MHz is called the Upper Sideband (USB). So AM transmissions consist of a lower sideband and an upper sideband. CB radios equipped with SSB can operate on just one of the sidebands (lower or upper).

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.

Why SSB is not suitable for video transmission?

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.

Which is better SSB SC or DSBSC?

DSB-SC - Double SideBand Suppressed Carrier

Hence it needs two times the bandwidth of SSBSC as explained later. It has advantages of having lower power consumption but needs complex detection at the receiver side. DSBSC modulation technique is used in analogue TV systems to transmit colour information.

What is the power in sideband?

Therefore, the power in one of the sidebands in SSB SC modulation is 79.36 W.

How far can you talk on 2 meters?

On VHF frequencies such as 2-meters, antenna height greatly influences how far one can talk. Typical reliable repeater range is about 25 miles (40 km). Some repeaters in unusually high locations, such as skyscrapers or mountain tops, can be usable as far out as 75 miles (121 km).

What mode is used on 6 meters?

Propagation modes more familiar to VHF operators, such as sporadic-E, auroral, meteor-scatter, transequatorial and moonbounce, all have been used on six meters. Sporadic-E is the most common workhorse for six-meter operators.

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.

Is Marine SSB still used?

Despite several advances in offshore voice communications such as satphones, marine single sideband (SSB) isn't going away anytime soon. That's because SSB, unlike satphones, allows an unlimited number of people to listen to a transmission at the same time.

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.