Blonder-Tongue RMDA SERIES Rack-Mounted Distribution Amplifiers

The RMDA Series are professional quality, broadband, rackmounted hybrid distribution amplifiers. The RMDA's are ideal as a headend launch amplifier or distribution amplifier for MATV, SMATV or CATV applications requiring rack mounting. A variety of models are available with operational gains of 15, 30, 43 or 50 dB and frequency ranges from 47 to 450, 550, 750, 860 or 1000 MHz. Refer to the RMDA specifications for available gain and bandwidth combinations.

The RMDA Series amplifiers have built-in variable gain and slope controls. The 5500S-XX models use a single push-pull hybrid module providing excellent performance and economy for headend applications. The 5500-XX employ dual push-pull hybrid modules and the 5500P-XX have a push-pull hybrid followed by a power doubling hybrid. The dual hybrid models will have better CNR performance, compared to single hybrid models in applications with low input levels coupled with reduced gain settings. Test ports for both the input and output are provided for monitoring signal levels without interrupting service (not available on 5500S-XX). The RMDA Series products are housed in a single height, 1.75" high, rack mountable, aluminum chassis that provides exceptional heat dissipation.

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. Ordering Information

Model Stock No. Description

RMDA 450-30 5500 43 Rack Mounted Distribution Amplifier 30dB, 47-450MHz

RMDA 450-30P 5500P43 Rack Mounted Distribution Amplifier 30dB, 47-450MHz, Power Addition

RMDA 450-30S 5500S43 Rack Mounted Distribution Amplifier 30dB, 47-450MHz, Single Hybrid

RMDA 450-50 5500 45 Rack Mounted Distribution Amplifier 50dB, 47-450MHz

RMDA 550-30 5500 53 Rack Mounted Distribution Amplifier 30dB, 47-550MHz

RMDA 550-30P 5500P53 Rack Mounted Distribution Amplifier 30dB, 47-550MHz, Power Addition

RMDA 550-30S 5500S53 Rack Mounted Distribution Amplifier 30dB, 47-550MHz, Single Hybrid

RMDA 550-50 5500 55 Rack Mounted Distribution Amplifier 50dB, 47-550MHz

RMDA 750-30 5500 73 Rack Mounted Distribution Amplifier 30dB, 47-750MHz

RMDA 750-30P 5500P73 Rack Mounted Distribution Amplifier 30dB, 47-750MHz, Power Addition

RMDA 750-S15 5500S71 Rack Mounted Distribution Amplifier 15dB, 47-750MHz, Single Hybrid

RMDA 860-30 5500 83 Rack Mounted Distribution Amplifier 30dB, 47-860MHz

RMDA 860-30P 5500P83 Rack Mounted Distribution Amplifier 30dB, 47-860MHz, Power Addition

RMDA 860-43P 5500P84 Rack Mounted Distribution Amplifier 43dB, 47-860MHz, Power Addition

RMDA 1000-30 5500 13 Rack Mounted Distribution Amplifier 30dB, 47-1000MHz


RMDA-ARP (active return path) are rack mounted 2-way broadband distribution amplifiers.

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The RMDA-ARP (active return path) are rack mounted 2-way broadband distribution amplifiers. Utilizing push-pull hybrid amplifier technology, they are ideal for MATV, SMATV or CATV applications. The amplifiers have a forward bandwidth of 54 - 860 MHz with a gain of 30 dB. The reverse path of 5-40 MHz is fieldconfigurable for active or passive operation.

The RMDA-ARP amplifier has built-in variable gain controls on both the forward and reverse paths. A forward path variable slope control is provided inter-stage as is the variable gain control. Additionally, a fixed forward equalizer and forward and reverse attenuator plug-ins can be installed for further signal conditioning at the input to the amplifier. 30 dB backmatched test ports at the input and output are provided for monitoring both forward and reverse signal levels without interrupting service. The amplfier is housed in a 1RU aluminum chassis that provides exceptional heat dissipation.

Model Stock No. Description

RMDA-86A-30 5200-83 860 MHz, 30 dB Push-Pull Amp with Active Return Path Options

Model Stock No. Description

VMI-CEQ8V 9377A-xx Plug-in Equalizer , 860 MHz, Values 0-20 dB

VMI-AT 9320-xx Plug-in Attenuator, 1000 MHz, Values 0-18 dB

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