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FM Transmitters

ZHC618F-500C 500W Compact FM Stereo Transmitter
ZHC618 500

High performance and very good reliability has been proved by the large usage of ZHC618F-500C transmitters. Also it is low cost and small size
Professional 500W FM transmitter All-in-one 19 inch 3U cabin Software radio product DSP & DDS CD audio quality Big LCD displays all the parameter Analog and digital(AES/EBU) audio signal input Easy to use
The transmitter implements digital FM modulator module as its core, combining with RF.. power amplifier.
In the transmitter, DSP & DDS are used to execute  all-digital processing, such as digital filtering, pre-emphasis, the generation of pilot frequency, stereo coding and FM modulating. An AGC circuit is used to keep the set power stable.
ZHC618F-500C is a compact FM stereo broadcasting transmitters. The advanced digital technologies, Digital Signal Processor (DSP) and Digital Direct Synthesiser (DDS), are used in the transmitters to get little size, high performance and high reliability. They are widely used for professional radio stations to transmit high quality FM radio programs.

FEATURES
  • Hearing similar to CD
  • All-digital technologies DSP+DDS
  • Built-in audio signal limiter
  • Analog and digital (AES/EBU) audio signal input directly.
  • AGC circuit to keep the Output Power stability.
  • Big LCD display all the parameters in real time.
  • Communication Interface by RS232 for remote
  • Five kinds of protections for the security
  • Stainless steel cabinet
  • Easy to upgrade to synchronized transmitter
  • Compact structure

SPECIFICATIONS

Frequency Range:

87.0MHz ¢108.0MHz

Frequency Setting step:

10KHz

Carrier Frequency precision:

±250Hz

Residual Wave Radiation:

≥ 65dBc

Audio Input Impedance:

600A, Balance

Stereo Separation:

55dB

Audio Input Level:

-12~+8 dBm, step 0.01dB

S/N:

≥75dB (10H ¢ 15 kHz, 100%)

Audio Harmonic Distortion:

<0.1%

Audio response:

±0.05dB (10Hz ¢ 15 KHz)

Output Load Impedance:

50A

Output Power:

0~500W

Pre-emphasis:

0μSô50μSô75μS

Deviation:

±75kHz

Pilot Frequency:

19 kHz±1Hz,

Pilot Signal Modulation:

8% ¢ 10%

Sub-carrier Suppression:

≥65dB

RF Output Interface:

7/16'(female) or 7/8'Flange

Size:

3U, 19-inch standard

Weight:

35KG
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