47 RF Chokes & Filters ISO-PLUS Ethernet RF Filter Give yourself another tool to help you pull out those weak signals and operate more ef ectively. DX Engineering has designed a simple way to suppress electromagnetic interference (EMI) and reduce common-mode RF interference (RFI) to and from Ethernet cables used between your personal computers, printers, routers, cable modems, transceivers and other devices. This interference is a common problem on Gigabit Ethernet Cat5e and Cat6 cables used for network LAN connections. The patent pending ISO-PLUS is an inline Ethernet filter that joins two RJ-45 connectors together to fight common-mode RFI and EMI noise interference for radio frequencies from well below 1 MHz to over 100 MHz. Installed on either end of Ethernet cables, ISO-PLUS filters mitigate RFI caused to the Ethernet- connected device. At the same time they reduce interference to radio receivers and other Ethernet devices that is caused by RFI or EMI generated by an Ethernet-connected device. The ISO-PLUS provides common mode attenuation resulting in reduced or eliminated EMI or RFI caused by power supplies, wall power adapters, touch lamps, appliances, and just about anything else near RJ-45 cables. The RF filters do not af ect Ethernet data signal levels or speed. Each ISO-PLUS comes with one shielded RJ-45 patch cable (about six inches). The filters work with Cat5, Cat5e, Cat6 and Cat6a cables with RJ-45 connectors. Available in sets of two or ten filters. The ISO-PLUS units do NOT pass DC voltages and do not support PoE (Power over Ethernet). DXE-ISO-PLUS-2 Ethernet RF Filter, 2 Units .....................................................$81.99 DXE-ISO-PLUS-10 Ethernet RF Filter, 10 Units .................................................$355.99 Assembled 50 Ω Choke Balun Choke baluns ensure that RF does not flow on the outside shield of feedlines, phasing lines, etc. This COMTEK balun consists of 75 heavy-duty mix-31 RF choke beads on a length of RG400 PTFE coax terminated with silver-plated PTFE PL-259/UHF male connectors. The balun comes assembled except for the provided correct length of heat-shrink tubing, which needs to be installed. The choke provides excellent common mode impedance and handles up to 5 kW from 1.8 to 54 MHz. COM-CFC-50A 50 Ω Choke Balun, Assembled . ..........................................$131.49 Accessories DXE-RADP-3 Stainless Steel Radial Plate with 20 Bolt Sets ......................$99.99 DXE-SSVC-2P V-Saddle Clamp, Fits 1" to 2" Tube.......................................$16.49 High Impedance Common Mode RF Choke Kit This 40-toroid, Mix-31 solid ferrite bead choke kit provides the simplest and most ef ective technique of creating RF isolation at an antenna feedpoint or feedline termination. Covering 1.8 to 54 MHz, these beads—installed on a user-supplied coaxial cable prior to connector installation—provide high common mode impedance resulting in received noise reduction, reduced RF on the shield, better antenna performance, elimination of phasing errors and erroneous meter readings, the best 1:1 balun, and other benefits for applications including Yagis, dipoles, verticals, and phased array element feedpoints. The DXE-FBC kit's 0.500" I.D. ferrite beads come with 48-inch long heat shrink tubing to secure them in place. Simply slide the beads over any standard 0.405" coaxial cable and use a heat gun or hair dryer to secure them for long-lasting weather protection. DXE-FBC Choke Kit, 40 Beads, 1.8-54 MHz ........................................$152.99 Color-Coded Ferrite RF Noise Reduction Kits There’s nothing more frustrating than searching through a box of unmarked ferrite toroids and beads, unsure of which ones are right for your application. The problem: They all look the same, but they’re made from dif erent mixes of ferrite, a ceramic made from oxides of magnetic metals. DX Engineering has selected mixes designed to block and dissipate RF currents, a technique that is proven to suppress radio frequency interference (RFI). Each mix works best over a certain frequency range. By color-coding our ferrite products, you can tell a toroid made from 31-mix from one made with 77-mix at a glance, taking the guesswork out of finding the right piece to place on your feedlines. Parts are color-coded as follows: • 31-Mix, Blue – 1 MHz to 300 MHz • 61-Mix, Red – 200 MHz to 2 GHz • 43-Mix, Silver – 25 MHz to 300 MHz • 75-Mix, Green – 150 KHz to 30 MHz • 52-Mix, Orange – 200 MHz to 1 GHz • 77-Mix, Pink – 100 KHz to 50 MHz DXE-ACDCGEN1-RFI For AC/DC Generator, Two 3" I.D. Toroids, Mix 31 .............$99.99 DXE-ACDCGEN2-RFI For AC/DC Generator, Two 1" I.D. Snap-On, Mix 31 ..........$52.99 DXE-AM-RFI For AM Broadcast, 5 Toroids, 8 Snap-On, Mix 77 ............$109.99 DXE-CSB31-10-1 One 1" I.D. Snap-On Bead, Mix 31 ......................................$34.99 DXE-CSB31-275-10 Ten .275" I.D. Snap-On Beads, Mix 31 ................................$34.99 DXE-CSB31-525-5 Five 0.5" I.D. Snap-On Beads, Mix 31 .................................$34.99 DXE-CSB31-750-5 Five .75" I.D. Snap-On Beads, Mix 31 .................................$36.99 DXE-CSB31-COMBO 4 Small, 2 Med., 2 Large Snap-On Beads, Mix 31 ..............$41.99 DXE-CSB61-COMBO 20 Snap-On Bead Pack, Mix 61 .........................................$106.99 DXE-CSB75-375 One .375" I.D. Snap-On Bead, Mix 75 .................................$27.99 DXE-CSB75-750-2 Two Large .75" I.D. Snap-On Beads, Mix 75 ......................$48.99 DXE-LA1-RFI For Linear Amplifier, 1 Toroid, 2 Snap-On, Mix 31 ............$68.99 DXE-LA2-RFI For Linear Amplifier, 1 Toroid, 3 Snap-On, Mix 31 ............$83.99 DXE-LA3-RFI For Linear Amplifier, 1 Toroid, 4 Snap-On, Mix 31 ............$72.99 DXE-TC31-24-4 Four 1.4" I.D. Toroids, Mix 31 ..............................................$62.99 DXE-TC31-40-1 One 3" I.D. Toroid, Mix 31 ...................................................$61.99 DXE-TC43-14-10 Ten .90" I.D. Toroids, Mix 43 ...............................................$51.99 DXE-TC43-24-4 Four 1.4" I.D. Toroids, Mix 43 ..............................................$63.99 DXE-TC43-82-25 25 .52" I.D. Toroids, Mix 43..................................................$61.99 DXE-TC52-14-4 Four .9" I.D. Toroids, Mix 52 ................................................$43.99 DXE-TC52-24-2 Two 1.4" I.D. Toroids, Mix 52 ..............................................$44.99 DXE-TC61-24-2 Two 1.4" I.D. Toroids, Mix 61 ..............................................$60.99 DXE-TC75-24-2 Two 1.4" I.D. Toroids, Mix 75 ..............................................$47.49 DXE-TC77-14-8 Eight .90" I.D. Toroids, Mix 77 .............................................$45.99 DXE-TC77-24-2 Two 1.4" I.D. Toroids, Mix 77 ..............................................$45.99 DXE-TC77-82-20 20 .52" I.D. Toroids, Mix 77..................................................$47.99 DXE-TC-COMBO Ten 2.4" O.D. Toroids, Mixes 31/61/77 .............................$116.99 DXE-XCVR1-RFI For HF Base Station, 2 Toroids, 3 Snap-On, Mix 31 ...........$49.99 DXE-LA1-RFI Iron Powder Cores DX Engineering now carries popular material numbers and sizes of iron powder core toroids that can be used by amateur radio operators to build cost-ef ective RF inductors for MF to UHF circuit board applications, as well as for RF suppression. Their low permeability makes iron powder inductor cores preferred over ferrite in high- temperature environments inside hot equipment. Further, inductors wound on iron powder cores produce less electromagnetic interference to adjacent circuits. Choose from #2 (250 kHz-10 MHz) and #6 (3-40 MHz) toroids in packs of 5, 10, or 25. Enter “Powder Core” at DXEngineering.com for more details. DXE-TPC02-05-25 Toroid, #2, 250 kHz-10 MHz, 0.5" O.D. Pack of 25 ................$30.99 DXE-TPC02-157-10 Toroid, #2, 250 kHz-10 MHz, 1.57" O.D. Pack of 10 ..............$49.99 DXE-TPC02-225-5 Toroid, #2, 250 kHz-10 MHz, 2.25" O.D. Pack of 5 ................$70.99 DXE-TPC06-03-25 Toroid, #6, 3-40 MHz, .307" O.D. Pack of 25 .........................$25.99 DXE-TPC06-05-25 Toroid, #6, 3-40 MHz, 0.5" O.D. Pack of 25 ...........................$25.99 UNUNs The RU-1-1 1:1 UNUN helps remove unwanted RF from the coax cable shield. This 200W PEP common-mode RF choke is ideal for short coax cable runs or non-resonant antennas. The RU-1-1 features SO-239 sockets for both input and output. The RU-9-1 UNUN allows easy interface of vertical and end-fed antennas to the LDG line of automatic antenna tuners. This 200W PEP UNUN may also be used for many antenna projects where a 4:1 or 49:1 UNUN is needed. LDG-RU-1-1 1:1 UNUN, Coax Choke ......................................................... $29.99 LDG-RU-9-1 9:1 UNUN, Interface for Vertical and End-Fed Antennas ... $29.99 Baluns and UNUNs Built to benefit a range of antenna systems, Chameleon Baluns and UNUNs are designed to enhance impedance transformation and signal ef iciency while minimizing interference. Each unit features an FT-240-43 toroidal core precisely wound with PTFE-insulated, 14 AWG enameled copper wire; durable weatherproof housing; and top-mounted stainless steel eyebolt that provides a secure anchor point for base or portable operation. Check individual devices for antenna compatibility. CHA-UNUN-BALUN-1 1:1 Current Balun, 1-100 MHz, 50 Ω Input, 1,000W PEP ......................................................................$114.99 CHA-UNUN-BALUN-4 4:1 UNUN, 1-52 MHz, 200 Ω Input, 1,000W PEP ............$114.99 CHA-UNUN-BALUN-6 6:1 UNUN, 1.5-70 MHz, 300 Ω Input, 1,500W PEP .........$114.99 CHA-UNUN-BALUN-9 9:1 UNUN, 1.5-30 MHz, 450 Ω Input, 1,200W PEP .........$114.99 CHA-UNUN-BALUN-9 CHA-UNUN-BALUN-6 CHA-UNUN-BALUN-4 CHA-UNUN-BALUN-1 DXE-XCVR1-RFI Check out our YouTube channel for in-depth tech tips and product demos!
