TUM-503 5KW UHF TV transmitter is used to transmit both TV Image signal and Audio signal; it is one of important parts of wireless transmission system.

TUM-503 5KW UHF TV transmitter is composed of TV Exciter, Exciter Auto Switch, PA Module, Power Divider, Switch Power, Control System, Cooling System, Load, and Coupler. Transmitter is installed in a 19inch 42U standard rack, all input/output interfaces set on back panel

2.1 General specification

Standard: PAL/NTSC/Customized

Frequency range: CH13~56

Output impedance: 50Ω

Output power: ≥5KW

Modulation: ≤87.5%

Difference between Audio/Image CF: 6.5±0.001MHz

Image CF stability: ±300Hz

Image/Audio power ratio: 10:1

Intermodulation inside band: ≤-51dB
Stray output inside adjacent channel: ≤-40dB
Stray output outside adjacent channel: ≤-60dB
Output load return loss: Normal ≥32dB
Allowed ≥20dB

2.2 Video specification

Video input level: 1Vpp±3dB
Video input level: 75Ω
Modulation: AM, negative polarity
Group delay-frequency character: ≤±50ns

Differential Gain: ≤±5%
Differential Phase: ≤±4°
Field waveform distortion K50: ≤2%
Line waveform distortion Kb: ≤2%

Luminance non linearity distortion: ≤8%
Chroma/Lightness gain inequality: ±10%

Chroma/Lightness delay inequality: ±30ns
2T Sine SW distortion KP: ≤2%
2T Sine SW/Bar pulse amplitude ratio: ≤2%
Stochastic Sundry Wave S/N ratio:

Root-Mean-Square Value, unweighted: ≥50dB

Periodic Disturbance S/N ratio(Peak to Peak value) ≥50dB
CF parasitic phase modulation: ±5°
Blanking level stability: ±2.5%

2.3 Audio specification

Audio input: 0dBm±6dB, 600Ω (Bal.) or 10kΩ (Unb.)
Modulation: FM
Frequency deviation: ±50KHz
Carrier offset: ±300Hz

FM S/N ratio: ≥60dB(1KHz,100% modulation)
AM noise: ≤-50dB(Unmodulated)
Inner carrier noise: ≤-45dB(100%modulated)
Pre-emphasis: 50μs

Harmonic distortion: ≤1%(30Hz~15KHz, 100%modulated)
Amplitude frequency characteristic:

±1dB(30Hz~15KHz,50%modulated 50μs)

Product will be packaged by plywood, shipment could be DHL/FEDEX/UPS/EMS etc or sea freight. It takes about 3~5 days from factory to our logistics agent.

We provide online technical support, customer can talk with our engineer via skype, telephone or web-cam. We also provide on-site assistance if customer need. Transmitter warranty is 2 years, any problem occurs during warranty time caused by product quality, we will repair for free.

Anshan JIEHV Broadcasting Electronic Technology Co.,Ltd, focusing on FM/TV broadcasting and communication industry for over 15 years. JIEHV product now export to many countries in the world.

Customer need to inform us frequency channel, power supply condition and output connector type when placing order. We strongly recommend customer contact us to finalise technial specification details, we are very glad to share our professional experience with customer to help them have a perfect solution.