What are the analog audio interfaces

Analog interface occupies a large proportion in the audio field. Common analog input and output interfaces are: TRS interface (large/small three-core), RCA lotus head, XLR Canon port, etc.

　　TRS means Tip (signal), Ring (signal), Sleep (ground), which respectively represent the three contacts of this joint. What we see is three sections of metal pillars separated by two sections of insulating material.

In fact, the TRS connector we see most in daily life is the appearance of a cylindrical connector, usually in three sizes: 1/4" (6.3mm), 1/8" (3.5mm), 3/32" ( 2.5mm).

　　 For most people, the 3.5mm TRS interface should be the most commonly used, which is the interface size of most headphones. The 6.3mm connector is more common in many professional equipment and high-end headsets, but now many high-end headsets have gradually begun to switch to 3.5mm connectors. The 2.5mm TRS connector used to be popular on mobile phone headsets, but now it’s seldom seen. The headset interface is basically "dominated" by the 3.5mm interface.

　　RCA interface is also very common in our daily life, and it is basically available on speakers, TVs, power amplifiers, DVD players and other equipment. It is named after the English abbreviation of Radio Corporation of America (RadioCorporaTIonofAmerica). In the 1940s, the company introduced this interface to the market and used it to connect phonographs and speakers. Therefore, it is also known as the PHONO interface in Europe. The connector we are more familiar with is called "lotus head".

　　RCA interface adopts coaxial signal transmission mode, the central axis is used for signal transmission, and the contact layer on the outer edge is used for grounding. Each RCA cable is responsible for transmitting one channel of audio signal. Therefore, according to the actual needs of the sound channel, the number of RCA cables matching the number can be used. For example, to set up two-channel stereo, two RCA cables are needed.

　　XLR interface, commonly known as "Canon Port". The XLR plugs we usually see are 3-pin, of course, there are also 2-pin, 4-pin, 5-pin, and 6-pin. For example, on some high-end headphone cables, we will also see four-pin XLR balanced connectors. The XLR interface can be used to transmit audio balanced signals and unbalanced signals, but from the perspective of the interface, we can't see what kind of signal it is transmitting.

How far(long) the transmitter cover?

The transmission range depends on many factors. The true distance is based on the antenna installing height , antenna gain, using environment like building and other obstructions , sensitivity of the receiver, antenna of the receiver . Installing antenna more high and using in the countryside , the distance will much more far.

EXAMPLE 5W FM Transmitter use in the city and hometown:

I have a USA customer use 5W fm transmitter with GP antenna in his hometown ,and he test it with a car, it cover 10km(6.21mile).

I test the 5W fm transmitter with GP antenna in my hometown ,it cover about 2km(1.24mile).

I test the 5W fm transmitter with GP antenna in Guangzhou city ,it cover about only 300meter(984ft).

Below are the approximate range of different power FM Transmitters. ( The range is diameter )

0.1W ~ 5W FM Transmitter ：100M ~1KM

5W ~15W FM Ttransmitter : 1KM ~ 3KM

15W ~ 80W FM Transmitter : 3KM ~10KM

80W ~500W FM Transmitter : 10KM ~30KM

500W ~1000W FM Transmitter : 30KM ~ 50KM

1KW ~ 2KW FM Transmitter : 50KM ~100KM

2KW ~5KW FM Transmitter : 100KM ~150KM

5KW ~10KW FM Transmitter : 150KM ~200KM

How to contact us for the transmitter?

Call me +8618078869184 OR
Email me [email protected]
1.How far you want to cover in diameter ?
2.How tall of you tower ?
3.Where are you from ?
And we will give you more professional advice.

About Us

FMUSER.ORG is a system integration company focusing on RF wireless transmission / studio video audio equipment / streaming and data processing .We are providing everything from advice and consultancy through rack integration to installation, commissioning and training.

We offer FM Transmitter, Analog TV Transmitter, Digital TV transmitter, VHF UHF Transmitter, Antennas, Coaxial Cable Connectors, STL, On Air Processing, Broadcast Products for the Studio, RF Signal Monitoring, RDS Encoders, Audio Processors and Remote Site Control Units, IPTV Products, Video / Audio Encoder / Decoder, designed to meet the needs of both large international broadcast networks and small private stations alike.

Our solution has FM Radio Station / Analog TV Station / Digital TV Station / Audio Video Studio Equipment / Studio Transmitter Link / Transmitter Telemetry System / Hotel TV System / IPTV Live Broadcasting / Streaming Live Broadcast / Video Conference / CATV Broadcasting system.

We are using advanced technology products for all the systems, because we know the high reliability and high performance are so important for the system and solution . At the same time we also have to make sure our products system with a very reasonable price.

We have customers of public and commercial broadcasters, telecom operators and regulation authorities , and we also offer solution and products to many hundreds of smaller, local and community broadcasters .

FMUSER.ORG has been exporting more than 15 years and have clients all over the world. With 13 years experience in this field ,we have a professional team to solve customer's all kinds of problems. We dedicated in supplying the extremely reasonable pricing of professional products & services. Contact email : [email protected]

Our Factory

We have modernization of the factory . You are welcome to visit our factory when you come to China.

At present , there are already 1095 customers around the world visited our Guangzhou Tianhe office . If you come to China , you are welcome to visit us .

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This is our participation in 2012 Global Sources Hong Kong Electronics Fair . Customers from all over the world finally have a chance to get together.

Where is Fmuser ?

You can search this numbers " 23.127460034623816,113.33224654197693 " in google map , then you can find our fmuser office .

FMUSER Guangzhou office is in Tianhe District which is the center of the Canton . Very near to the Canton Fair , guangzhou railway station, xiaobei road and dashatou , only need 10 minutes if take TAXI . Welcome friends around the world to visit and negotiate .

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