显示标签为“home fm transmitter”的博文。显示所有博文
显示标签为“home fm transmitter”的博文。显示所有博文

2012年11月20日星期二

8W FM power amplifier 88-108MHz input 10mW output 7--8W


fm amplifier  88-108MHz input 10mW  output 7--8W
This is the amplifier for the radio broadcast transmitter power amplifier
As long as the input power of 
10MW can be output 7 - 8WVery clean FM signal
The circuit uses two power amplifiers, 
Using of winding inductance and improve the circuit Q
Usingof broadband matching circuits  
Operating frequency perfect cover 88-108MHZUsing 12 - 13.8V DC power supply
The circuit is mounted on the aluminum 2MM case, good signal and fm radio transmitter frequency interference shielding, so that your front-end circuit can be good to avoid any interference!
Amplifier output and input are using 50 ohm SMA connectors, power supply through the use of special high-frequency capacitance-core!

2012年11月7日星期三

80W 2U FSN-801 Professional FM Broadcast Radio Transmitter 87.5-108 MHz cover 5KM-15KM


80W 2U FSN-801 Professionalradio broadcast equipment87.5-108 MHz
The  is an ultra compact size 87.5-108 MHz 80W best fm transmitter , high efficiency, fully solid state FM-modulated transmitter of 150W rated power. With advanced self protection and full digital front panel control features, advanced fm broadcast transmitter Technology.
Features:
-Frequency range: 87.5-108 MHz, 10 KHz/Step
-Modulation: FM, ±75 KHz peak deviation
-Frequency stability: <±100 Hz
-RF output power: 0 to 80W ±0.5 dB
-Max reflected power: 5 W
-Harmonic suppression: <-65 dBC
-RF output impedance: 50 Ω
-RF output connector: N type -female
-Audio/MPX input level: -10 to +13 dBm @±75 KHz deviation
-Audio/MPX input impedance: 10 KΩ / 600 Ω, Balanced / unbalanced
-Audio input connector: XLR-female
-AUX / MPX input level: -10 to +13 dBm @±75 KHz deviation
-AUX channel input impedance: 10 KΩ
-MPX and AUX input connector: BNC-female
-Pre-emphasis: 0 / 50 / 75 us
-S/N ratio Mono: >73 dB (20 to 20 KHz)
-S/N ratio Stereo: >68 dB (20 to 15 KHz)
-Distortion: <0.05% THD @± 75 KHz dev.
<0.2% THD @± 150 KHz dev. (limiter threshold > 150 KHz)
-Stereo crosstalk: >60 dB (100 to 5 KHz)
>50 dB (20 to 15 KHz) int. MPX encoder
>60 dB with ext. MPX encoder
-Audio channel frequency response: 20 to 15 KHz ± 0.15 dB
-MPX input frequency response: 10 to 100 KHz ± 0.15 dB
-AUX input frequency response: 10 to 100 KHz ± 0.15 dB
-Mains power supply requirements: 90~264VAC; 127~370VDC, Full range universal input
-Operating temperature range: -10 to 45 ℃
-Weight: 10 Kg
General features:

- Professional stereo sound with excellent separation
- Standard 19″ 2H rack, clean design and high quality manufacturing
- Low distortion and good Signal/Noise ratio
- Modular construction, internal boards can be replaced one by one
- Built-in CPU system for controlling and monitoring
- Advanced TEMP protection – SWR protection
- In our opinion the best quality/price ratio possible.




2012年9月16日星期日

15watt ST-2815 PLL Stereo FM broadcast Radio Transmitter Exciter 88Mhz-108Mhz


15watt ST-2815 PLL Stereo rds fm transmitter Exciter 88Mhz-108Mhz 
The main technical indicators:power supply voltage: 12V
(2) Current: 4A
(3) Frequency Range: 88  ~108Mhz center frequency 98MHZ
Frequency Step value: 100kHz
(5) frequency stabilization methodPLL phase-locked loop frequency synthesis
(6) Frequency stability± 10ppm (-10 C +60 ° C)
Modulation frequency deviation: ≤ ± 75kHz (100%)
ways of working: continuous work
Clutter and Harmonic-60dB
10 signal to noise ratio: ≥ 60dB
11 stereo separation:-50dB
12 Audio Frequency Response: 80 ~ 15000Hz
13 Audio Distortion: <2%
14 modulation: 15%
15 Input Level:-15dBV (adjustable)
16 RF Output Impedance: 50 ohms
17 RF output power2W, 8W, 15W
18 reference distance2Km-10Km (open)
19 Machine dimensions485 * 220 * 450MM (including before the panel protrusions)
20 Total Weight: 1.35KG

Article From:http://www.fmuser.org

2012年9月5日星期三

DVB-T Modulator

DVB-T Modulator 1.1 Outline DVB-T fm modulator supports all DVB-T standard channel coding and modulation parameters, and supports for MFN. This system meets DVB-T and EN50083 standards. Since it supports FEC and RS correction and encoding, it is convenient to communicate with other analogue and digital signals, such as video conference, internet, and IP phone. In addition, this modulator supports HFC, MMDS and 8GHz broadband digital systems and it brings modern digital services to customers in large area. 1.2 Features l Complying DVB-T, ETSI/ EN50083 l Support OFDM with: 2K, 4K, 8K l Support modulation with: QPSK, 16QAM, 64QAM l FEC:1/2, 2/3, 3/4, 5/6, 7/8 l Guard interval: 1/4, 1/8, 1/16, 1/32 l Support Hierarchy modulation: 16QAM, 64QAM, Alfa1.2.4 l Support MFN l IF output at 36MHz with 90~107BμV l 2ASI inputs, support ASI loop out l PID filtering and re-mapping l PSI/SI information pick-up, phase and modification l RJ-45 Ethernet interface introduces remote maintenance, supervision and software upgrade. l SFN (single frequency network) l Digital Pre-Distortion l Constant Temperature Crystal l Remote control 1.3 Performance index Data Input Socket 75Ω, BNC, Interface Comply with EN 50083 ASI Standard Interface. Modulation Level Support Hierarchy and Non-hierarchy Modulation Data Format Standard TS stream,188/204byte IF Output Output Impedance 50Ω BNC Output Frequency Range 32~42MHz (Adjustable) Output Level -5dBn( 105dBμV) ±0.2dB Group Delay ±10 ns Stability of Frequency 20ppm @ ±4.25MHz -46dBc(2k), -56dBc(8k) IQ Amplitude Imbalance ≤0.02% Carrier Suppression ≤-55dBc Spurious ≤-60dBc MER >42dBc RF Output Output Impedance 50Ω NBC Output Frequency Range 355~860MHz Output Level ≥0dBm(107dBμV) Monitor Signal Level -30+2dBm Total Frequency Deviation ≤0dBm (107dBμV) Output Suppression <-55dBc Output Level Adjustable Range ≥16dB ≥80dBc/Hz (@1Kz) ≥105dBc/Hz (@100Kz) Local Oscillation Phase Noise ≥130dBc/Hz (@100Kz) Bandwidth 6M, 7M, 8M (Adjustable) MER ≥36dB(agile); ≥40dB(Fix) Attenuation 0~16dB( 0.5dB step) Signal Encoding and Modulating Encoding Rate 1/2, 2/3, 3/4, 5/6, 7/8 Carrier 2k, 8k Modulation Mapping Constellation QPSK,16QAM, 64QAM Guard Interval 1/4, 1/8, 1/16, 1/32 Bandwidth 6M, 7M, 8M
 Article From:http://www.fmuser.org

2012年8月31日星期五

Jennifer Louden is a best-selling author of five books

Jennifer Louden is a best-selling author of five books, including her classic, The Woman's Comfort Book, and her newest, Comfort Secrets for Busy Women. She's also a creativity and life coach, creator of the Inner Organizer, and a columnist for Body + Soul Magazine. She leads retreats on self-care and creativity around the country. Hear her live on Martha Stewart Living Radio, Sirius Channel 112 every Sunday at 8 am Pacific, 11 am Eastern. Visit her world at: http://www.fmuser.org I call this 'raising the bar'...never being satisfied with what we do or experience. Therefore, we rarely feel nourished or experience contentment. We live more and more in a place of 'not enough' and farther and farther away from our center and natural shape of our lives. Minimum requirements are the foundation of Self-Care. Of course, like the tide, requirements ebb and flow depending on life conditions and age. So, the next time you sit down to make your list of goals, start with your basic requirements first (rather than thinking they will just fit into your schedule without your conscious intent). You may wonder why I ask you to state minimum requirements. Wouldn't it be far better to name your ideals and strive for those? My experience has been that when I kept a list of everything I wanted to do for myself -- or thought would be good for me -- I made commitments I was incapable of keeping. Yearly:- A spiritual retreat of some kind especially in nature- Time with my extended family, especially my sisters Monthly:- An afternoon alone doing whatever I want when I want to- A date with my husband Weekly:- Pay bills and balance checking account- Date with my entire family doing something fun- My women's group- Kitchen desk organized and kitchen medium deep cleaned Daily:- 8 hours of sleep each night, 1 nap on one weekend afternoon- Time to myself in the morning before anyone else is awake- Protein for breakfast- Be near or touch plants and dirt or rocks and water: watch a river or take a bath or walk in rain or pay attention when drinking- Be outdoors- Have a time each day that all 'have to's' stop -- for right now it is 8:00 PM As an example, take a look at which bare minimums are important to Self-Care reader, Lynn: Yet when you reach a certain level of consciousness (and age!), if you neglect your basics, you notice the fallout a lot faster and you realize you have a lot less leeway to stray from what is essential to you. long range fm transmitterWhen you reach a certain stage of commitment to yourself, you find that you are more than willing to give whatever attention and energy is needed to sustain your basics. Which does not mean you won't stubbornly test this, of course. “Do I really need that much sleep?” “Do I really require exercise rdquo; “Do I actually have to have a conversation with my friend about hurting my feelings?' These minimums aren't flashy. It isn't about reaching for some fabulous dream or exploring a new passion. But, without these nurturing nuggets, nothing else can be sustained. Between survival and a fully humming creative life lies the middle ground of minimum requirements for centering self-care -- a fancy way of saying what you absolutely must have to stay in touch with your center best radio transmitter . Recently I asked my Self-Care e-newsletter readers to share what helps them 'turn toward their truth.' I've also called this 'minimum self-care requirements' in other issues. As a result, this is what I wrote today to be included in my upcoming book: