Coaxial cavity band pass filters for FM transmitters

 5,99 989,99

In Stock
 449,99

In stock

 549,99

In stock

 989,99

In stock

 5,99 108,00

Prices shown are without VAT (paid only in EU)

Description

Narrow band-pass cavity filters and notch filters
Cavity filters consist of a single, double or triple (or more) coaxial cavities and exist for power levels from 50W to 10KW and more.  These filters are constructed using high Q quarter wave lines with variable coupling. Install these between transmitter and antenna to assure maximum signal without any spurious or harmonics. Also helps remove spurious mixing products when used in multi-transmitter installations. Fabricated from aluminum or stainless steel while the cavities are silver plated copper with PTFE insulators.

VERY IMPORTANT: Cavity filters are very narrow devices and the load and source impedance can affect their tuning. While we tune filters for you in the factory you may have to fine-adjust tuning once the filter and antenna are installed in final position. To perform this tuning you will need VNA (Vector analyzer) or antenna analyzer such as RigExpert AA-230 ZOOM or similar. If you don’t own such an instrument or do not know how to use it PLEASE DON’T BUY such a filter. You have been warned!

Technical specifications for ECOMAX CAVFM2N 300W, double cavity:
– Form factor: Tw0 cavities, somewhat differs from the photo shown
– Connectors: N female
– B.W. (-3db): 800 khz – 1.5 Mhz
– Insertion Loss: <0,4 dB
– Power handling: 400W
– Dimensions: 200x220x1000 mm (check)
– Weight: 12Kg

Technical specifications for ECOMAX CAVFM2M 1000W, double cavity:
– Form factor: Tw0 cavities, somewhat differs from the photo shown
– Connectors: 7/16 female
– B.W. (-3db): 800 khz – 1.5 Mhz
– Insertion Loss: <0,4 dB
– Power handling: 1000W
– Dimensions: 200x220x1000 mm
– Weight: 12Kg

Technical specifications for ECOMAX CAVFM2M 2500W, double cavity:
– Form factor: Tw0 cavities, somewhat differs from the photo shown
– Connectors: 7/16″ female
– B.W. (-3db): 500 khz – 800Khz
– Insertion Loss: <0,3 dB
– Power handling: 2500W
– Dimensions: 200x400x1250 mm
– Weight: 15Kg

 

Important: The filters are tuned in the factory and this unfortunately means lead times are quite long (3-5 weeks). Once you order one of these you can’t cancel the order (since it will be tuned specifically for you). Only bank transfer payment is accepted for this item.

Other models are available on request, use “Contact us” link at the bottom or chat function to send us your requirements.

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