RF Toroid Calculator by VK3CPU
Snap On RF Choke - 1/2"/12.7mm cable -5/10/15 Bead Option, 100 KHz - 5 MHz, Excellent in AM Broadcast Band
SKU SNO75-1/2-5$64.75Bulk pricing available for quantities of 2 units or moreSelect # of beads1Buy more, save moreQuantity Price per item Discount 2 items $57.45 11% off 20 items $49.95 23% off
Save this product for later Customer reviewsNo reviews yet. Only signed-in customers who bought this product can leave reviews. To leave a review, sign inSnap On RF Choke - 1/2"/12.7mm cable -5/10/15 Bead Option, 100 KHz - 5 MHz, Excellent in AM Broadcast BandProduct DetailsBrand: Palomar EngineersMPN: SNO75-1/2-5, -10, -15Country/Region of Manufacture: United StatesEffective Frequency Range (MHz): 100 KHz - 30 MhzPEP Power Rating (watts): same as coax cable ratingCommon Mode Attenuation (db): see graphEstimated Insertion Loss (db): .025Use for 1/2″ Cable – RG8, RG213, LMR-400, AC/DC and signal cable for suppression of common mode current (RFI) from 100 KHz to 30 MHz
Typical common mode suppression up to 22 dB depending upon the number of beads and frequency. Quite often 20 dB is considered the minimum effective reduction.
A minimum impedance of 500 ohms is needed for 50 ohm cable or 10 times the cable impedance for other cables to make a measurable difference in common mode current suppression.
The beads clamp to the cable and may be operated as is for indoor use. However, it is strongly suggested that they be covered to protect the plastic covers from weathering – use electrical tape for best results or heat shrink to ensure longer life. All kits come with instruction manual which covers assembly and application tips.
As you can see from the impedance vs frequency graph, you can very effectively increase the choking impedance by increasing the number of beads on the cable.
Snap On and Slip on Feed line chokes available in sizes to fix cables with outside diameters of 1/4", 3/8", 1/2", 3/4", 1" - check website for other size options.
Tech note: For RFI frequencies over 3.75 MHz, choose SNO31-1/2-5, 10 or 15 for improved common mode rejection (see graph for comparison)
Note: Ferrite beads may be hexagonal or square shape depending on inventory on hand at time of order.Display prices in:USDTutorials
Snap On RF Choke - 1/2"/12.7mm cable -5/10/15 Bead Option, 100 KHz - 5 MHz, Excellent in AM Broadcast Band
Quantity | Price per item | Discount |
2 items | $57.45 | 11% off |
20 items | $49.95 | 23% off |
Use for 1/2″ Cable – RG8, RG213, LMR-400, AC/DC and signal cable for suppression of common mode current (RFI) from 100 KHz to 30 MHz
Typical common mode suppression up to 22 dB depending upon the number of beads and frequency. Quite often 20 dB is considered the minimum effective reduction.
A minimum impedance of 500 ohms is needed for 50 ohm cable or 10 times the cable impedance for other cables to make a measurable difference in common mode current suppression.
The beads clamp to the cable and may be operated as is for indoor use. However, it is strongly suggested that they be covered to protect the plastic covers from weathering – use electrical tape for best results or heat shrink to ensure longer life. All kits come with instruction manual which covers assembly and application tips.
As you can see from the impedance vs frequency graph, you can very effectively increase the choking impedance by increasing the number of beads on the cable.
Snap On and Slip on Feed line chokes available in sizes to fix cables with outside diameters of 1/4", 3/8", 1/2", 3/4", 1" - check website for other size options.
Tech note: For RFI frequencies over 3.75 MHz, choose SNO31-1/2-5, 10 or 15 for improved common mode rejection (see graph for comparison)