Ferrite filter products can help speed up digital devices by suppressing common mode current from RFI sources OR prevent digital devices from emitting RFI on its connecting cables and power supply lines.
F240-31, ID=1.4", AC/DC/Coax Noise Filter, RFI Range 1-300 MHz, AKA FT240-31
Product Details
MPN: F240-31
Country/Region of Manufacture: China
RFI Range (MHz): 1-300 Mhz
ID-B (in/mm): 1.4/35.6
OD-A (in/mm): 2.4/61
Height-C (in/mm): .5/12.7
Weight (oz/gm): 188 grams
Initial permeability: 1500
Case/Box lot size: 100
Frequency (MHz)/Single turn impedance (ohms): 1MHZ: 12 ohms, 10MHz: 40 ohms, 25MHz: 63 ohms
Very useful for AC/DC power, coax cable common mode current suppression. For highest choking resistance, wrap cable through center of ring as many turns as possible. DO NOT use for impedance transformers (2:1, 4:1, 9:1, etc.) - use Mix 43 or Mix 61 for high power.
All F240-31 singles individually labelled with specifications for ease of identification.
Customer Feedback:
At 100 watts on 40 meters, my CW sidetone used to be the smoke detectors in my house! After installing a set of ferrite rings on the 120V and 12V lines, I can finally work 40 meters CW without hearing my code through the smoke detectors. Thank you!
Paul
K7SHR
On Sale
FT240-3I, ID=1.4", AC/DC/Coax Noise Filter, RFI Range 1-300 MHz, Case of 100
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SKU F240-31-100
List price $1,000.00
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FT240-3I, ID=1.4", AC/DC/Coax Noise Filter, RFI Range 1-300 MHz, Bulk Pack of 10
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SKU F240-31-10
List price $100.00
Save 10%
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