1300 000 734

FM Rebroadcast Head End 87.5-108MHz

FMC88108-6-NT

The FMC88108-6-NT is a 19” rack mountable 1RU shelf, 6 Channel VHF FM Stereo rebroadcast repeater with audio break-in functionality on all channels. The RF output frequency for each channel is configured to be the same as the off-air received frequency (i.e. non-translating). If the RF output frequency is required to be different than the off-air received frequency for any of the channels, then the FMC88108-6 model should be used.

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The FMC88108-6-NT is a 19” rack mountable 1RU shelf, 6 Channel VHF FM Stereo rebroadcast repeater with audio break-in functionality on all channels. Internal splitting and combining of all the channels means termination is only required via a single BNC RF input and RF output connector keeping the installation simple. Mechanical user-programming capability is provided for changing the operating frequency for each channel. The audio input for all six channels is via a rear mounted single isolated BNC balanced audio input connector with an associated audio loop connector option, facilitating daisy chain audio break-in connectivity to more than one shelf. Front mounted LED’s provide visual operational confirmation of each of the six respective channels.

Features:

• 6Ch VHF FM Stereo on-frequency (non-translating) rebroadcast unit
• Single BNC RF Input and single BNC RF Output for all six channels
• Additional FMC88108-6-NT units can be added for additional rebroadcast frequencies.
• Audio break-in on all six channels from a single audio source
• RF Output is typically feed into a linear VHF RF Power Amplifier prior to signal distribution.
• Compact 1RU 19” rack mountable shelf with a depth of 470mm.
• Summary Alarm and telemetry control via rear mounted DB9 connector
• A full range of filtering, combining and splitting is available for larger systems
• Optional RF-over-Fiber (RFoF) signal distribution system
Frequency Range 87.5 - 108.0MHz
Number of channels/programs 6
FM Modulation type F3E and F8E
RF System impedance 50Ohm
Rx selectivity - nominal ≤ -85dB ±300KHz
Rx low signal alarm level -67dBm (100μV)
Tx frequency stability ± 5ppm
Tx and Rx synthesizer increments 50kHz
RF Spurious and Harmonics ≤ -60dBc
Combined Tx intermodulation products ≤ -60dBc
S/N ratio (stereo) with 50μS de-emphasis (filtered 20Hz - 20KHz) ≤ 60dB (70dB typ.)
Stereo separation (L into R) ≤ 45dB (30Hz - 15kHz)
Stereo harmonic distortion ≤ 0.5% (30Hz - 15kHz)
Audio break in-level (adjustable) 1V rms max (balanced)
Rx input termination connector BNC (F)
AC mains operational voltage 90-246VAC
AC Frequency 50Hz/60Hz
Operation altitude - max 2000m
Mounting 1RU 19” rack mounting
Operational temperature range -10° C to +45° C / 14° F to 113° F

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