delta meccanica 20071 1

The Delta Meccanica 20071 Double Cavity FM Filter with 7/16DIN on both input and output (EIA 7/8 optional) is used for transmitters of up to 1200 watts to prevent the products of intermodulation caused by multiple FM transmitters that are used in the same location or in close proximity to one another.

Preventing intermodulation can be achieved by placing a cavity filter on the output of each transmitter. A double cavity is suitable for a maximum frequency separation of 2 MHz; otherwise, a triple cavity filter is required. Adjust the filter according to the output capacity of the transmitter or power amplifier.

If you have any questions or would like more information on cavity filters, please contact Broadcasters Warehouse. We’re happy to assist you!

  • Flexible and compact
  • Light alloy and brass construction
  • Temperature stabilised
  • A cylindrical cavity with high mechanical stability
  • Retunable
  • Thermic stabilisation carried out with INVAR
  • Can be mounted in any position
  • Natural convection cooling
  • Fine-tuning
Mechanical characteristics
ConnectorsDIN 7/16 female or EIA 7/8"
Overall dimensions [WxDxH] [CM.]52x26x93
Weight [kg.]27
Temperature range [°C]-10 ÷ +50
Electrical characteristics
Frequency range [MHz]87,5 ÷ 108
Maximum input power [W]1200
Insertion Loss [dB] @ Fo< 0.4 (typical 0.35)
Insertion Loss [dB] @ Fo±150kHz< 0.5 (typical 0.45)
Selectivity [dB] @ Fo±2MHz> 24
Return loss [dB]≥ 26
Input/Output impedance50W


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