Radio Communication Baluns & Chokes

1pc 9:1 antenna balun. Balun One Nine includes an AntennaGuard varistor on the input, protecting your SDR setup from spurious ESD. ApplicationsHF antenna balun, SDR/amplifier ESD protection. At 39.2mm x 13.0mm in total size (including connectors!).

Hese are ideal for use as noise or common mode suppressors on cables to reduce interference on the HF bands, or constructing baluns. 43 Material is used for EMI/RFI suppression in the 20 MHz to 250 MHz range.

1 pcs 9:1 BALUN. Power : 250 w SSB, PEP 350 w. Size: Φ 20 x 110 (mm).

Resistance power: 150w. Transformation ratio of 1: 4. Frequency range: 1-56MHz. Rate (item arrived). Reply within 24hours.

Use it as BALUN for your VHF antenna. This is the one and only Common Mode Filter Choke / BALUN for 110-180 MHz on the market. PATENT pending! It is only product with over 6,000 Ohms of CMI (Common Mode Impedance) on 145MHz while maintaining a Resistive part of CMI for a wide range of frequency spectrum.

1PC YY-100（M）1：4 BALUN微型平衡 - 不平衡转换器. （注意：长期户外使用时，必须使用外壳硅胶粘合密封上盖和下盖进行加工）. 特点：体积小巧，便于携带，适合户外使用QRP站和设置。.

Specifications :Current Balun for various antenna (1.7 to 30 MHz). This transformer is used to match the impedance of a 50 Ohms connector (SO-239) coaxial cable balanced to a 200 Ohms balanced .

YY - 100 (M) 1:4 BALUN miniature barron. Features: small size, easy to tear open outfit, suitable for outdoor units and QRP. Under power: < 100 w SSB.

If you use End Fed antenna aka 9:1 UNUN with a piece of wire, OCF dipole antenna or have any RFI problem, use the best tool to cure it. Ferrite turns the RF energy into heat, coiled coax does not! CMC-330-5K Common Mode Choke / Noise Suppressor / Line Isolator / RFI Suppressor.

1:1 HF Dipole BALUN. For Ham Dipole Antennas. Build Simple Dipole Antennas For You. Add This Balun for a Balanced Antenna! Best Balun Buy on the Internet! This is the Balun that others use to say that their's is "As Good as.".

1: 9 short wave balun 200w long line balun 50 ohm to 450 ohms. 1x 1: 9 short wave balun 200w long line balun 50 ohm to 450 ohms. Resistance to power: 200w. Input impedance: 50 ohms (unbalanced). We are committed to resolve all issues in a friendly and satisfactory manner.

If you use End Fed antenna aka 9:1 UNUN with a piece of wire, OCF dipole antenna or have any RFI problem, use the best tool to cure it. Ferrite turns the RF energy into heat, coiled coax does not! It is a cure for noisy locations, reduce the noise floor of your receiver by several S-units instantly.

CWS 16:1 Balun / Unun Jerry Sevick W2FMI Series. Match 800 ohms to 50 ohms impedance in 1 to 30 Mhz. Antenna with 800 ohms balance or unbalanced feed line to 50 ohms co-axial. Antenna Mounting Type: Antenna wires.

Palomar Engineers HF Base Transceiver RFI and Noise Reduction Kit, RFI Range 1-3. Included are the following chokes and installation guidelines to suppress RFI in and out RF Output (4x):Snap On Filter (1” ID) – 3 turns of coax cable through center.

I have a RadioWave B11C 1.1 Current Balun.

CWS 9:1 Balun Current Type Jerry Sevick W2FMI Series. Use W2FMI 9:1 balun to matching 50 ohms cable to a balanced load of 450 ohms. For example, a center fed half wave dipole, the impedance could be from 50 ohms to 4000 ohms.

1 pcs 1:1 BALUN. Power: 500 w SSB.

1 pcs 1:1 BALUN. Features: small size, easy disassembly, suitable for outdoor radio and QRP use. Withstand power: <100W SSB.

CWS 1:1 Balun. Current Type. Jerry Sevick W2FMI Series. 5Kw/10Kw High Power. BALUN is " Current" type. Enclosure Depth: 2.300 in. High Power Powder Coated Core 1:1 ratio; 1.0 to 50 Mhz.; Weatherproof box.

What you see is one you will receive.

When used with a compatible receive balun, the DIGI-VGASD-T8 features 1600x1200 VGA video performance, high-fidelity 20 Hz to 20 kHz audio performance, and IR or bi-directional RS232 extension up to 350 feet.

Photo shows what is included. Value is calculated. Manufacturer is unknown. Coil form shows wear and cracks due to weather. Over all size is approx 2 1/2" dia x 3" long with 1"od x 7/8"id stud on one end and 3/4"od x 5/8"id stud on the other.

Photo shows what is included. No exceptions will be made!

1:1.5 Balun. Current Type. Jerry Sevick W2FMI Series. 2Kw / 5Kw High Power. • BALUN is "Current" type. High Power Powder Coated Core 1:1.5 ratio; 
1.0 Mhz to 50 Mhz.; Weatherproof box. • Frequency Range: 1.0 Mhz to 50 MHz.

CWS 6:1 Balun Current Type Jerry Sevick W2FMI Series. BALUN is " Current" type. Folded Dipole Antennas using 300 ohms ribbon at 0.22 wavelength above ground. High Power Powder Coated Core 6:1 ratio; 300 balance antenna to 50 ohms co-axial; 1.5 - 30 Mhz.; Weatherproof box.

1:1 HF Dipole Balun. Includes center hanging eyelet for inverted V antennas and options for antenna wire strain relief. Jetstream JTBAL41B 1:1 BLACK. Two models are available. The 1:1 matches 50(75) ohms unbalanced coax to 50(75) balanced dipoles.

HF Antenna Line Isolator/Noise Surpressor 3-30 MHz – NEW. The unit has never been used. It is a CMC-330-1K Common Mode Filter.

RFI Ferrite Clamp-on large. Just wind 4-8 turns (passes) thru each for best results. "The common-mode filter or choke may be one of the best-kept secrets". Cable Information. D 19.15 _ 0.755 _. C 47.5 _ 1.87 _.

Here is a single lot of (2) Used RF Output Coils - Approx 5.5 uH and 0.641 uH. Photo shows what is included. Values are calculated. Manufacturer is unknown. No exceptions will be made!

WBOX - Single Channel Mini Passive Video Balun (Pair of 2). Model / Part No. 0E-VBMINI.

160 will be picking up soon, so if you want to get an amp on, this will do the job of plate choke.

CWS 4:1 Balun Current Type Jerry Sevick W2FMI Series. BALUN is " Current" type. Off center-fed Antennas. Multi-band Antennas. Folded Dipole Antennas using 300 ohms ribbon at 0.17 wavelength above ground.

This balun is in great condition with minimal wear. Includes original box and manual.

Just wind 4-8 turns (passes) thru each for best results. "The common-mode filter or choke may be one of the best-kept secrets".

Just wind 4-8 turns (passes) thru each for best results. "The common-mode filter or choke may be one of the best-kept secrets".

Do you use an antenna tuner to do this ?. When you use an antenna tuner to tune your antenna over multiple HF frequencies, the antenna feed impedance changes greatly and this creates a big mis-match between your antenna and your radio.