显示标签为“radio broadcasting,”的博文。显示所有博文
显示标签为“radio broadcasting,”的博文。显示所有博文

2012年10月8日星期一

150W 2U FSN-150 Professional FM Transmitter Broadcast Radio 87.5-108 MHz


150W 2U FSN-150 Professional fm radio broadcast transmitter 87.5-108 MHz
This is an ultra compact size 87.5-108 MHz 150Whome 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, advancedbest radio 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 150W ±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4日星期二

How to Increase FM Transmission Range

Print this articleInstructions 1 Increase fm transmitter by raising or using a longer antenna. The higher up the antenna is physically, the longer the transmission range is. An ideal antenna height is 60 to 70 feet on relatively flat terrain. Rather than extend the antenna, consider mounting it on a higher surface. 2 Move the fm transmitter kits to flatter terrain. Transmitting in areas where there are physical obstructions such as buildings, hills and trees will significantly block your FM transmission. Move to a flatter area. Also transmitting closer to other FM transmissions will interfere with your signal. 3 Broadcast your signal with a stronger FM transmitter. Generally, it takes two to four times the power to double the transmission distance. A radio broadcast equipment signal of 40 watts can reach a distance of 10 miles, while a signal of 15 watts will only transmit within a five-mile radius. Read more: How to Increase FM Transmission Range http://www.fmuser.org