Continue Shopping View Cart
Markertek - The Future of Broadcast Supply

Call 800-522-2025
M-F 8:30am - 7pm EST

Employee-Owned-Banner

Secure LoginClose X

Returning Markertek Customers

New Markertek Customers





Why Create an Account?

Creating a Markertek account now will save you time on future orders. You'll have full access to your order history and a personalized shopping experience.

 
Radio Design Labs

Narrow Results:

Categories

 

Need Assistance?

Get unbiased, vendor-neutral advice from actual broadcast & pro-audio professionals.

  • Online:
  • Contact Us
  • By Phone:
  • Toll Free: 800-522-2025
    (USA, Canada, Mexico, Caribbean)
    International: 845-246-3036
    Fax:: 845-246-1757

    Hours of Operation:
    8:30am - 7:00pm Eastern
    Monday - Friday

View As:

Sort By:

Display:

Radio Design Labs:

Page:

►►
    ◄◄
     
     
     
    • RDL DDB-BN2M Wall-Mounted Bi-Directional Mic/Line Dante Interface 2 x 2

      RDL DDB-BN2M Wall-Mounted Bi-Directional Mic/Line Dante Interface 2 x 2

      The DDB-BN2M is a complete wall-mounted Dante audio network interface. It features two XLR mic or line inputs on the front panels, plus two line outputs on a rear-panel detachable terminal block. Special software is not required to configure the DDB-BN2M. Each XLR input provides three switches that may be set from the front of the unit when the cover plate is not installed. One switch enables or disables P48 phantom; the second switch selects the mic or line gain range; the third switch sets the...

      Free Ship Banner

      Read More

      Item #: RDL-DDB-BN2M

      Availability: Usually ships in 3-10 business days

      Our Price: $529.00

      Add to Wishlist
    • RDL HD-MA35A 35 Watt Mixer Amplifier with Power Supply - Constant Voltage Output 25 V 70 V or 100 V

      RDL HD-MA35A 35 Watt Mixer Amplifier with Power Supply - Constant Voltage Output 25 V 70 V or 100 V

      The HD-MA35A is a three input audio mixer amplifier for systems demanding a broad range of features and high energy efficiency. Two output power amplifier zones are provided, 35 W (Zone 1) and 2 W (Zone 2). The Zone 1 output is driven from a high-efficiency Class D amplifier stage. The Zone 1 amplifier output level may be VCA controlled using various optional RDL remote controls, or by industry standard 0 to 10 Vdc or 0 to 10 kOhm controls. This output provides a constant voltage (25 V, 70 V or...

      Free Ship Banner

      Read More

      Item #: RDL-HD-MA35A

      Availability: Usually ships in 3-10 business days

      Our Price: $279.55

      Add to Wishlist
    • RDL ACM-3 Amplitude Component Monitor

      RDL ACM-3 Amplitude Component Monitor

      RDL's® ACM technology is the only time-proven, industry accepted method of controlling Synchronous AM Noise (the elusive FM transmission bandwidth variations that aggravate multipath artifacts in listeners' receivers). Hundreds of top performing FMs in every major U.S. market turn to ACM technology for maximum bandwidth performance. Every transmitter, new or old, can easily produce poor bandwidth, or can be made to perform as well as any signal in the market. Every FM station needs ACM technology...

      Free Ship Banner

      Read More

      Item #: RDL-ACM-3

      Availability: Usually ships in 3-10 business days

      Our Price: $800.75

      Add to Wishlist
    • RDL ST-LCR1 Logic Controlled Relay - Momentary

      RDL ST-LCR1 Logic Controlled Relay - Momentary

      The ST-LCR1 provides double-pole, double-throw dry switching contacts and LED indicator for relay closure. The ST-LCR1 provides momentary operation and is ideally suited where additional switching contacts are needed to be added to nearly any type of control signal. Features: Add Contacts to Any Control Signal Activation from Logic Circuits DPDT Switching Relay Open-Collector Switching Control from Switch, Button or Logic Circuits

      Free Ship Banner

      Read More

      Item #: ST-LCR1

      Availability: In Stock

      Our Price: $77.48

      Add to Wishlist
    • RDL RU-ASX4D 4x1 Stereo Balanced Audio Switcher - Terminal Block

      RDL RU-ASX4D 4x1 Stereo Balanced Audio Switcher - Terminal Block

      The RU-ASX4D is a four channel stereo audio selector with input gain adjustments and output level metering. The inputs and outputs are connected on rear-panel detachable terminal blocks. Each of the four stereo line level inputs accepts either a balanced or an unbalanced signal. Each input is equipped with a rear panel screwdriver-adjustable input gain trimmer. Input signal levels between -15 dBV and +8 dBu may be set to the proper operating level as indicated by a stereo dual-LED VU meter. This...

      Free Ship Banner

      Read More

      Item #: RDL-RU-ASX4D

      Availability: In Stock

      Our Price: $283.65

      Add to Wishlist
    • RDL PS-24AS 500mA AC/DC Power Supply For Stick-Ons & Rack Ups

      RDL PS-24AS 500mA AC/DC Power Supply For Stick-Ons & Rack Ups

      Unit powers multiple, similar Stick Ons and Rack-Ups. Call our Tech Support for compatibility of non similar units.

      Free Ship Banner

      Read More

      Item #: PS24V

      Availability: In Stock

      Our Price: $25.15

      Add to Wishlist
    • RDL RU-ADL2 Professional Audio Delay - 0 to 135 mS

      RDL RU-ADL2 Professional Audio Delay - 0 to 135 mS

      The RU-ADL2 is a DSP based dual-output delay for an analog audio source. It provides exceptional audio performance for the most critical applications in a professional audio environment. The RU-ADL2 accepts a single monaural audio input and provides two separate monaural outputs. The time delay on each output is individually adjustable from 0 to 135 mS. A large, bright 3-digit LED numeric display on the front panel shows the time delay set for each of the two outputs. A locking pushbutton switch...

      Free Ship Banner

      Read More

      Item #: RU-ADL2

      Availability: Usually ships in 3-10 business days

      Our Price: $489.79

      Add to Wishlist
    • RDL TX-J2 Unbalanced Input Transformer

      RDL TX-J2 Unbalanced Input Transformer

      The RDL TX-J2 Unbalanced Input Transformer is part of Radio Design Labs TX Series and features unbalanced stereo inputs to summed balanced mono output. TX Series modules are application-specific modules for the A/V and related industries. Many TX modules offer galvanic transformer isolation. Module functions include signal detection, switching, amplification, format conversion, line driving, mixing, distribution, twisted-pair sending/receiving and more. Each TX is a compact module...

      Free Ship Banner

      Read More

      Item #: TX-J2

      Availability: In Stock

      Our Price: $59.79

      Add to Wishlist
    • RDL TX-MVX Manual Rmt Controlled Video Switch - 2x1 - BNC

      RDL TX-MVX Manual Rmt Controlled Video Switch - 2x1 - BNC

      The TX-MVX is the ideal choice in installations where either a manual switch or an open-collector must switch video signals. VIDEO A is normally connected to COMMON. When the TRIG terminal is pulled to ground, VIDEO B is connected to COMMON and VIDEO A is disconnected. The TX-MVX utilizes a high-quality RF relay allowing the module to either route a single video source to one of two destinations, or switch two video sources to a single video destination. The actual switch (or other...

      Free Ship Banner

      Read More

      Item #: TX-MVX

      Availability: Usually ships in 3-10 business days

      Our Price: $99.78

      Add to Wishlist
    • RDL D-XLR2 XLR 3-pin Female & 3-pin Male on Decora Wall Plate with Terminal Block connections on rear

      RDL D-XLR2 XLR 3-pin Female & 3-pin Male on Decora Wall Plate with Terminal Block connections on rear

      XLR 3-pin Female & 3-pin Male on Decora Wall Plate with Terminal Block connections on rear. Features: Specifications:

      Free Ship Banner

      Read More

      Item #: D-XLR2

      Availability: In Stock

      Our Price: $18.46

      Add to Wishlist
    • RDL ST-SSR1 Line-Level Audio Switch - 2x1

      RDL ST-SSR1 Line-Level Audio Switch - 2x1

      The ST-SSR1 was designed for absolute silent switching of audio signals. It supports two balanced line-level inputs and one balanced output. Each can be used unbalanced as well. The ST-SSR1 is perfect for switching between two input signals or as a silent On/Off switch for a single channel. Performance is in keeping with the technical standards for which RDL has become known. The user can program the module for either fast or soft switching. The SELECT input feeds the OUTPUT when the TRIG terminal...

      Free Ship Banner

      Read More

      Item #: ST-SSR1

      Availability: In Stock

      Our Price: $108.10

      Add to Wishlist
    • RDL TX-PA40D 40 W Stereo Audio Amplifier - 8 Ohm with Power Supply

      RDL TX-PA40D 40 W Stereo Audio Amplifier - 8 Ohm with Power Supply

      The TX‑PA40D is the ideal choice in many applications where a high quality, high‑efficiency utility amplifier is needed to drive a pair of 4 Ω or 8 Ω speakers. It is specifically suited to fixed‑gain amplification applications where gain is controlled by other equipment. Examples include projectors with variable audio outputs used in classrooms, boardrooms and video conferencing. The TX‑PA40D features two unbalanced line level inputs on high‑reliability...

      Free Ship Banner

      Read More

      Item #: RDL-TXPA40D

      Availability: Usually ships in 3-10 business days

      Our Price: $228.27

      Add to Wishlist
    • RDL FP-UBC6 Unbalanced to Balanced Converter - 6 Channel

      RDL FP-UBC6 Unbalanced to Balanced Converter - 6 Channel

      The FP-UBC6 is the ideal choice for multiple channel connectorized conversion from unbalanced to balanced audio. This module features six identical channels, making it ideally suited to converting consumer 6-channel surround sound into the professional audio format. Each input channel is unbalanced, connected through a gold-plated phono jack. Each output is balanced. All outputs are connected through XLR jacks with gold-plated pins. A gain trim potentiometer is provided for each channel. The...

      Free Ship Banner

      Read More

      Item #: FP-UBC6

      Availability: In Stock

      Our Price: $385.32

      Add to Wishlist
    • RDL RU-LB4P Line-Level Bi-Directional Network Interface - PoE

      RDL RU-LB4P Line-Level Bi-Directional Network Interface - PoE

      The RU-LB4 modules are Dante audio network interface products compatible with line-level audio equipment inputs and outputs. These modules are designed to be mounted in equipment racks, closets, conference tables and on shelves or backboards in commercial/industrial installations. APPLICATION: The RU-LB4 is a high quality converter that provides professional line-level outputs from four Dante network received audio channels. It also converts four professional or consumer line-level sources to Dante...

      Free Ship Banner

      Read More

      Item #: RDL-RU-LB4P

      Availability: In Stock

      Our Price: $574.10

      Add to Wishlist
    • RDL RU-MX4L Pro 4-CH. Line Level Mixer Microphone & Line Output

      RDL RU-MX4L Pro 4-CH. Line Level Mixer Microphone & Line Output

      The RDL RU‑MX4L is the ideal choice in many applications where a combination of balanced and/or unbalanced line‑level signals needs to be mixed. Balanced connections use XLR connectors. Unbalanced signals are coupled through phono jacks. Each of the four RU‑MX4L inputs can accept either a balanced XLR line‑level input or an unbalanced line‑level phono jack input. The unbalanced phono jack LINE OUTPUT from one RU‑MX4L may connect to the unbalanced input of other...

      Free Ship Banner

      2 Types Available

      Item #: RU-MX4L

      Availability: Usually ships in 3-10 business days

      Our Price: $281.84

      Add to Wishlist
    • RDL SF-DN4 Two Left/Right Digital Audio to Four Dante Network Audio Signal Interface

      RDL SF-DN4 Two Left/Right Digital Audio to Four Dante Network Audio Signal Interface

      The SF-DN4 is a digital audio interface that converts two stereo digital audio sources to four Dante network audio channels. The SF-DN4 automatically detects a valid input on any of the three input jacks: S/PDIF optical, S/PDIF coaxial, or AES/EBU XLR. The input is decoded, re-clocked and transmitted to the Dante network. A yellow front-panel LOCK LED indicates a valid source received without any lock errors. Special software is not required to configure the module. The SF-DN4 is a professional...

      Free Ship Banner

      Read More

      Item #: RDL-SF-DN4

      Availability: In Stock

      Our Price: $510.00

      Add to Wishlist
    • RDL FP-BUC2 Balanced to Unbalanced Converter - 2 Channel

      RDL FP-BUC2 Balanced to Unbalanced Converter - 2 Channel

      The FP-BUC2 is the ideal choice for connectorized conversion from balanced to unbalanced audio. This module features two identical active (transformerless) channels. Gold contact XLR jacks are utilized for the balanced input channels. Each output is unbalanced, connected through a gold-plated phono jack. A level trim potentiometer is provided for each channel. The FP-BUC2 circuitry features low-noise, low-distortion and excellent headroom and crosstalk performance...

      Free Ship Banner

      Read More

      Item #: FP-BUC2

      Availability: In Stock

      Our Price: $178.83

      Add to Wishlist
    • RDL ST-LCR3 Logic Controlled Relay - Dual Alternate Pulse

      RDL ST-LCR3 Logic Controlled Relay - Dual Alternate Pulse

      The ST-LCR3 is ideally suited to applications where momentary pulses are needed from a single control signal. The module provides a momentary pulse when a logic signal at its input first becomes active. A separate momentary pulse is provided when the logic signal at the module input becomes inactive. Two logic inputs are available on the ST-LCR3. Either of these inputs may be used. Terminal 1 is internally pulled high to +5 Vdc. This input becomes active when an external closure or open-collector...

      Free Ship Banner

      Read More

      Item #: ST-LCR3

      Availability: In Stock

      Our Price: $126.35

      Add to Wishlist
    • RDL PT-AMG2 Portable Audio Signal Generator & Monitor

      RDL PT-AMG2 Portable Audio Signal Generator & Monitor

      This portable audio instrument is comprised of a precision audio oscillator, precision level meter and speaker. The 700 Hz oscillator section features two outputs. The balanced XLR output is front-panel switch selectable for MIC or LINE level (pro level). The unbalanced output operates at -10 dBV (consumer). Output stability is suited to accurate bench top audio testing. The audio metering circuit features two inputs, an LED meter and a monitor speaker. The balanced input is front-panel switch...

      Free Ship Banner

      Read More

      Item #: PT-AMG2

      Availability: In Stock

      Our Price: $307.78

      Add to Wishlist
    • RDL EZ-VDA2B 1x2 NTSC/PAL Video Distribution Amplifier on BNC

      RDL EZ-VDA2B 1x2 NTSC/PAL Video Distribution Amplifier on BNC

      The EZ series offers unparalleled flexibility. Each unit is fully labeled on the front and rear for use either as a finished product or as a utility module. Installation of multiple products is quick and easy using the comprehensive range of EZ rack mounts, chassis, bezels, drawers and accessories. High quality full-size switches, long life controls, quality connectors, solid-state audio and video switching, gold plating and superior engineering combine to make EZ the best value in the industry....

      Free Ship Banner

      Read More

      Item #: EZ-VDA2B

      Availability: Usually ships in 3-10 business days

      Our Price: $97.23

      Add to Wishlist
    • Radio Design Labs FP-MR2 Message Repeater

      Radio Design Labs FP-MR2 Message Repeater

      The FP-MR2 is a message repeater that permits electronic storage of a single recording up to one minute forty seconds in duration. This message may be played back manually using an external contact closure to ground or using the front-panel START button. The message may also be played back periodically using the interval timer included in the FP-MR2. A balanced line-level music input allows background music to be connected and the associated input potentiometer allows the installer to set the music...

      Free Ship Banner

      Read More

      Item #: RDL-FP-MR2

      Availability: In Stock

      Our Price: $296.90

      Add to Wishlist
    • RDL ST-UBA2 Unbalanced to Balanced Amplifier - 2 Channel

      RDL ST-UBA2 Unbalanced to Balanced Amplifier - 2 Channel

      The ST-UBA2 is used in any application requiring conversion from unbalanced consumer format signals to professional +4 dBu. It may be used to balance audio from CD players, cassette decks, computer sound cards, televisions, and a wide variety of other unbalanced sources. The mono sum output may be used to drive patch-bay jacks, monitors or subwoofer amplifiers. Separate Dual-LED VU metering is provided for the left and right outputs. A green LED illuminates at 15 dB below +4 dBu. The intensity...

      Free Ship Banner

      Read More

      Item #: ST-UBA2

      Availability: In Stock

      Our Price: $154.90

      Add to Wishlist
    • RDL STA-2A Dual High Gain Line Amplifiers

      RDL STA-2A Dual High Gain Line Amplifiers

      The STA‑2A is a dual‑channel, line‑level audio preamplifier. Each channel is identical. The audio inputs are bridged at 20 kΩ and accept either an unbalanced or a balanced audio signal. Gain is adjustable from unity to +24 dB using a 25‑turn precision audio taper trimming potentiometer. The output line driver circuits are designed to drive long balanced audio lines into 600 Ω loads. The STA‑2A features wideband circuitry for excellent phase response, low...

      Free Ship Banner

      Read More

      Item #: STA-2A

      Availability: In Stock

      Our Price: $151.06

      Add to Wishlist
    • RDL STD-10K Passive Audio Divider/Combiner - 10 k Ohm

      RDL STD-10K Passive Audio Divider/Combiner - 10 k Ohm

      Each STD module is a resistive branching network with RF filtering on each of the four channels. Any channel, A through D, may be either an input or an output. This permits combining stereo signals into mono inputs, splitting mono signals to multiple inputs, and even combining microphones with output shorting switches into a single amplifier input. The STD modules are available in 150 Ohm, 600 Ohm and 10 k Ohm models. All inputs and outputs are balanced. Features: 10 k Ohm Operation Combine Audio...

      Free Ship Banner

      Read More

      Item #: STD-10K

      Availability: Usually ships in 3-10 business days

      Our Price: $56.67

      Add to Wishlist
    • RDL RU-VSX4 Video Switcher - 4x1 - BNC

      RDL RU-VSX4 Video Switcher - 4x1 - BNC

      The RU-VSX4 is the ideal choice in most applications where four video signals need to be switched to a single output. The RU-VSX4 has two rear panel-jacks for each of the four video bridging input stages. One jack is for the input signal; the other is a loop-through output of the source signal. If 75 Ohm termination of the input signal is required, the terminator (provided) is plugged onto the LOOP OUT jack. The output video signal is 75 Ohm back-terminated to provide unity gain into a 75 Ohm terminated...

      Free Ship Banner

      Read More

      Item #: RU-VSX4

      Availability: In Stock

      Our Price: $353.06

      Add to Wishlist
     

    Page:

    ►►
      ◄◄
       
       
       
       

      The concept of Application-Specific-Modules was first introduced by RDL more than twenty years ago - a concept promoting unsurpassed value and performance. As the inventor of Application-Specific-Modules, RDL continues to lead the industry with their solutions to specific problems as well as building blocks of quality audio/video system designs. Markertek is the largest in-stock source for Radio Design Labs Products.

      Markertek is an authorized dealer for the entire Radio Design Labs line. If you don't see what you're looking for, contact us and we'll do our best to get it for you.

       
      Please fill out the information below
      Email Address*