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

Payment Method

We accept online payments via paypal, credit and debit cards. We also accept western union, money gram and bank transfer.

To order goods online and pay them via paypal, credit and debit cards, simply add your selected items to your basket, and proceed to the checkout, where you will be guided through the payment process.

Payment via PayPal:

1. You have your PayPal account, then choose the PayPal to complete the payment directly

2. If you want to use the PayPal payment, but you don’t have one PayPal account, please register one first.

Note: Choose the PayPal payment, you can choose your country currency, we accept all the currency.

Payment via Debit and Credit Card:

1. You click MasterCard, Visa Credit Card, American Express, Discover payment directly, you will be redirected to the PayPal website, then choose the payment method again, and fill in your card information to complete the payment.

2. You click the PayPal&Credit, you will be redirected to the PayPal website, the one is PayPal payment, the other one is Pay with Debit or Credit Card payment. Choose one to complete the payment.

Note: Your credit card will be charged upon placement of your order.

Payments via Western Union, Money Gram and Bank Transfer

If you would like to place your order, please contact us with the following information:

E-mail: service@uncuco.com

WhatsApp: +8615989288128

Your billing and delivery address.
Your full name, phone number and email address.
The list of items you'd like to purchase.
We will get back to you with a proforma invoice, and the directions for the final step to complete the direct deposit.

The payment needs to be verified by our in-house accounts department and goods will only be dispatched on their verification. Only once the funds have reflected in our bank account, will the goods be allowed to leave the store.
Please note that bank transfer transactions can take up to 4 business days to clear into our account. We will process your order as soon as your payment has cleared. To ensure a speedy turn around time, please notify us once you have made the deposit.

We offer cardholders the highest level of security in online shopping, irrespective of the type of card (credit or debit). All debit or credit card payments are processed via Activa System’s Secure Payment Gateway. All payment card information is entered exclusively on the bank’s 3D secure pages. We as the merchant do not store, have access to or sight of the payments card information. Should you select to pay with a payment card, you will therefore be redirected to secure pages administered by the Activa processing centre and a bank with which we have reached a card acceptance arrangement.

Verified by Visa & Mastercard
The Verified by Visa and MasterCard SecureCode trademarks displayed above allow each online purchase made with your payment card to receive additional protection via 3D Secure security protocols. 3D Secure is a unique service offered by MasterCard and Visa International that uses a One Time Pin (OTP) to protect a cardholder against unauthorized use of their card. Once activated, your card number cannot be used for online purchases at participating merchants without your One Time PIN (OTP). The OTP is sent to your cell phone during payment as the final step to complete the transaction.

SHIPPING AND DELIVERY

Shipping prices will be calculated at check-out, based on the weight of the goods, the country to which we are dispatching, and the shipping service you choose. If you place the order offline by email or phone, we will send you a proforma invoice including the shipping prices.

When will I receive my order?

The likely delivery timescale for orders will depend on the availability of the items you order, the delivery method you choose (where applicable) and the shipping destination country.

Delivery times can be calculated based on formula: Time to stock + 7days~15days ( The time shipping company needs deliver the products to address in your country)

Time to stock is the number of days we need to prepare your order for shipment or how long manufacturer or supplier needs to deliver the product to our warehouse.

Delivery tracking

We use DHL or Fedex or UPS or EMS express service for our deliveries. The tracking number will be sent to you by email as soon as we will ship the order. Please note that no information will be available for the tracking number until the shipping company has actually picked up the package. Please allow up to one business day for tracking information to become available. All deliveries require a signature.

Please note

We are only able to dispatch goods once payment has been received.
All orders are subject to approval by our verification department. We will notify you by phone or email should your order be delayed.
If, for any reason, we cannot supply a product you have ordered, we will contact you via email or phone and place your product/s on back-order once you have agreed you would like to wait. If you choose to put your order on back-order, we will provide you with personalized weekly updates and will notify you once your order has shipped. If one or more of your items is in stock and you are waiting on other item/s, you can have your order part shipped. A sales representative will keep you updated on the remaining portion of your order, and can provide tracking information for both shipments.