Package 3500W FM transmitter complete set include the 3500W FM transmitter, four bay dipole antenna system, 50meters coaxial cable with connectors. It is a economic complete package kit for radio station broadcasting.

3500W FM Transmitter Overview

This 3500W FM transmitter adopts the latest technological design. The 3500w FM transmitter integrate the exciter and power amplifier, output filter, switching power supply, etc into a 4U high 19-inch standard case. This advanced design reduces the number of connection cables and improves the overall efficiency of the transmitter, making it more reliable, lighter, and easier to operate.

The 3500W FM transmitter with 4U 19-inch all-aluminum standard chassis. 3.5-inch LCD display, PLL digital phase-locked loop frequency modulation technology, CD sound quality, the final power amplifier uses high standing wave ratio resistant LDMOS transistors. The 3500W FM transmitter can input analog audio signal or analog modulation signal, and AES / EUB digital signal.

Functional features
Humanized digital LCD touch panel, simple operation interface with direct touch control.
The integrated LCD displays all system parameters: transmitter frequency, stereo and mono, volume, amplifier tube temperature, audio signal UV meter, forward power, reflected power, modulation mode, and pre-emphasis etc.
4U 19-inch thick aluminum alloy case, which is not only sturdy but also has good heat dissipation.
Precise PLL frequency generation system to ensure the frequency does not drift within at least 10 years.
Built-in high-quality professional stereo encoder.

Excellent power AGC balance control system, the power output can be adjusted from 0 to full power, and has automatic gain power control to maintain the output power within a set range without drifting.
Support external input modulation RDS or SCA signal.
Supports AES-EBU digital signal input, 24Bit 192KHz sampling rate input range, true lossless audio (Default digital signal priority).

Can be used for FM (same frequency synchronization) broadcasting system. Provide options for synchronization 10MHz standard frequency input or built-in GPS module according to customer requirements
Equipped with RS232 communication interface, users can control all operations through the transmitter communication protocol.

The RF power amplifier part is synthesized by using multiple modules, and the amplification module uses NXP LDMOS transistor BLF188XR. It is able to withstand severe load mismatch of more than 65: 1 VSWR at 5dB compression point. Using superconducting welding technology, the transistor is welded on the copper plate to obtain excellent thermal conductivity and the power amplifier transistor has never been damaged so far.
All circuits adopt the design of split modules, and each modules have status indicators to check its working performance, which reduces maintenance and replacement costs.
Innovative RF module status monitoring and fault notification. If a module fails, you only need to replace the module with specified number according to the system prompt.
Automatically record 9 latest device alarms for later troubleshooting.

Specification
Frequency: 87.5-108MHz,

Frequency step value: 10KHz

Modulation mode: FM, peak deviation ± 75KHz

Frequency stability: <± 100Hz

Frequency stabilization method: PLL phase-locked loop frequency synthesis

RF output power: 0 ～ 3500W ± 0.5dB

In-band residual wave: <-70dB

Higher harmonics: <-65dB

Parasitic AM: <-79dB

RF output impedance: 50Ω

RF output connector: EIA 7/8 (IF45)
RF efficiency:> 75%

Analog audio input: -12dBm ~ + 8dBm

Audio level gain: -15dB ~ 15dB step 0.5dB

Analog audio input impedance: 600Ω balanced XLR

AES / EBU input impedance: 110Ω balanced XLR

AES / EBU input level: 0.2 ~ 10Vpp

AES / EBU sampling rate: 30KHz ~ 192KHz 24BIT

RDS / SCA input: unbalanced BNC

RDS / SCA input level gain: -15dB ~ 15dB step 0.5dB

Pre-emphasis: 0μs, 50μs, 75μs (users can set)

Frequency response: ± 0.1dB 30 ～ 15000Hz

Stereo resolution:> 60dB

S / N ratio stereo:> 70dB 30 ～ 15000Hz

S / N ratio mono:> 75dB 30 ～ 15000Hz

Audio distortion: <0.05%

Power supply voltage range:

l single-phase power 220Vac

l three-phase four-wire power 380Vac

Power consumption: <5500VA

Operating temperature range: -20 to 45 ° C

Working method: continuous work

Cooling method: forced air cooling

Cooling method: <95%

Altitude: <4500M

Dimensions: 483 x 720 x 176 mm (excluding handles and protrusions), standard rack 19 inches 4U.

Weight: 48Kg

Four Bay Dipole Antenna Overview

This is a 4-antenna FM dipole antenna array with a power capacity of up to 5kW. Package 4-Bay Dipole FM Antenna and Accessories is ready to install 4-bay omni-directional dipole antenna system. The 4bay fm dipole antenna system complete with antennas, power divider and jumper cables and connectors.

This 4bay omnidirectional dipole antenna, vertical or horizontal polarization wide band requiring no tuning. Weather resistant being entirely made of anodised aluminum and with a PTFE insulator.
These antennas are demountable into several parts to facilitate easy and economical shipping.

The antenna should be mounted on a pole support and clear of any nearby metal structures.

Center frequency: segment selection 92MHz 98MHz 104MHz

Bandwidth: 8MHz

Input maximum standing wave ratio: ≤1.1

RF input power: ≤ 5000 W

RF input impedance: 50Ω

RF input connector: EIA 7/8 (IF45)

Net Size：80 x 9000 x 800mm (without measuring handles and protrusions),

Package Weight：23KG

Complete Pakcage Include:

1pc 3500W FM Transmitter

1pc 5000W Four Bay Dipole Antenna system

1pc 50meters 7/8″ coaxial cable with connectors

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