20 Best Mfj 121b 2 [2024]

Are you looking for the best mfj 121b 2? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling mfj 121b 2.

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1 20Amp 2x10 Position Barrier Terminal Block Distribution Module for AC DC 20Amp 2x10 Position Barrier Terminal Block Distribution Module for AC DC
2 MRCUFF Boom Box and Cassette Tape DJ Pair Cufflinks in a Presentation Gift Box & Polishing Cloth MRCUFF Boom Box and Cassette Tape DJ Pair Cufflinks in a Presentation Gift Box & Polishing Cloth
3 HCDC 1 in 8 Out 40Amp Connector Power Splitter Distributor Source Strip Module HCDC 1 in 8 Out 40Amp Connector Power Splitter Distributor Source Strip Module
4 Dualband Antenna 2meter 70cm Mobile VHF/UHF Ham Radio (137-149, 437-480 Mhz) Mag Mount Magnet Base... Dualband Antenna 2meter 70cm Mobile VHF/UHF Ham Radio (137-149, 437-480 Mhz) Mag Mount Magnet...
5 MFJ-281 MFJ281 Original MFJ Enterprises Speaker for mobile radios, Clear Tone MFJ-281 MFJ281 Original MFJ Enterprises Speaker for mobile radios, Clear Tone
6 MFJ-270 Lightning Arrester DC-1GHz, UHF-F/F 400W by MFJ MFJ-270 Lightning Arrester DC-1GHz, UHF-F/F 400W by MFJ
7 MFJ-259D MFJ259D Original MFJ Enterprises Antenna Analyzer, VHF/220 MHz (100-160 KHz, 280-520 KHz,... MFJ-259D MFJ259D Original MFJ Enterprises Antenna Analyzer, VHF/220 MHz (100-160 KHz, 280-520...
8 MFJ Enterprises Original MFJ-915 RF Isolator 1.8-30 MHz, 1500W PEP, SO-239 MFJ Enterprises Original MFJ-915 RF Isolator 1.8-30 MHz, 1500W PEP, SO-239
9 Siglent Technologies SDS1202X-E 200 mhz Digital Oscilloscope 2 Channels, Grey Siglent Technologies SDS1202X-E 200 mhz Digital Oscilloscope 2 Channels, Grey
10 HYS VHF UHF Mult-Band Mobile Radio 2 Meter & 70cm Antenna 37.9 Inch 144/245/430Mhz Whip Antenna for... HYS VHF UHF Mult-Band Mobile Radio 2 Meter & 70cm Antenna 37.9 Inch 144/245/430Mhz Whip Antenna...
11 MFJ-4230MV MFJ4230MV MFJ4230-MV Original MFJ Switching Power Supply - 30 Amps, 13.8 VDC MFJ-4230MV MFJ4230MV MFJ4230-MV Original MFJ Switching Power Supply - 30 Amps, 13.8 VDC
12 MFJ Enterprises Original MFJ-916B 1.8-225, 350-540 MHz Duplexer - SO-239 MFJ Enterprises Original MFJ-916B 1.8-225, 350-540 MHz Duplexer - SO-239
13 MFJ-4602 Window Antenna Feedthrough Panel with SO-239, Balanced Line, and Wire Antenna Connectors MFJ-4602 Window Antenna Feedthrough Panel with SO-239, Balanced Line, and Wire Antenna Connectors
14 MFJ-1778 MFJ Enterprises Original G5RV Wire Antenna 160-10 Meters, 102 Ft Long MFJ-1778 MFJ Enterprises Original G5RV Wire Antenna 160-10 Meters, 102 Ft Long
15 MFJ Enterprises Original MFJ-918 MFJ 1.8-30 MHz Balun 1:1, 1500W PEP MFJ Enterprises Original MFJ-918 MFJ 1.8-30 MHz Balun 1:1, 1500W PEP
16 MFJ Enterprises Original MFJ-913 Balun 4:1 Current 300 Watts MFJ Enterprises Original MFJ-913 Balun 4:1 Current 300 Watts
17 MFJ-1699T 10-Band HF/VHF 80 Thru 2M Mobile Antenna with 3/8-24 Connector, Handles 200W MFJ-1699T 10-Band HF/VHF 80 Thru 2M Mobile Antenna with 3/8-24 Connector, Handles 200W
18 Mfj-264 Dry Dummy Load, 1.5kw, 0-600 Mhz , SO-239 Input Mfj-264 Dry Dummy Load, 1.5kw, 0-600 Mhz , SO-239 Input
19 Chunzehui F-1006 Low Loss Power Gate PWRpath Module, PowerPath PWRgate. Chunzehui F-1006 Low Loss Power Gate PWRpath Module, PowerPath PWRgate.
20 MFJ-941E MFJ941E MFJ Enterprises Original HF Antenna Tuner with Mini Cross Meter, 300 Watts MFJ-941E MFJ941E MFJ Enterprises Original HF Antenna Tuner with Mini Cross Meter, 300 Watts
Bestseller No. 1
20Amp 2x10 Position Barrier Terminal Block Distribution Module for AC DC
  • 20 Amp 48V 2x10 Position Barrier Terminal Block Distribution Module for AC DC. You can chose input from Barrier terminal block, Banana jack or DC...
  • Rated current 20 Amp(input from barrier terminal block). Input from banana jack maximum current 6 Amp. Input from DC power jack maximum current 5 Amp....
  • Barrier terminal blocks: pitch 7.62mm, screw Metric M3(thread diameter 3mm). Banana jacks: standard 4mm jack. DC power jack: for 5.5mm x 2.1mm plug.
  • FR-4 glass fiber PCB.
  • Packing list: 1x Terminal block distribution module. 1x Red banana plug. 1x Black banana plug. 11x Red spade terminal connectors (support wire 0.5 to...
Bestseller No. 2
MRCUFF Boom Box and Cassette Tape DJ Pair Cufflinks in a Presentation Gift Box & Polishing Cloth
  • Boom Box and Cassette Tape Cufflinks with a Presentation Gift Box
  • Arrives in hard-sided presentation box ready for gift giving, then can be used for storage or display box. Your french cuffs or tuxedo will never look...
  • Perfect for weddings, formal or business attire, awesome gifts for best man, groom, father, boss, boyfriend, husband or dad.
  • We make your gift giving choice easy for Anniversaries, special occasions, business, Christmas, Weddings, Birthdays and more.
  • Microfiber polishing cloth for cuff links gift included with each set. 30 day, no reason needed return policy.
Bestseller No. 3
HCDC 1 in 8 Out 40Amp Connector Power Splitter Distributor Source Strip Module
  • Operating voltage: 0 to 32VDC, No-load current: 2mA(for power indicator LED). Input port: maximum input current 40A, fuse 40A. Output port: 8 output...
  • With power indicator LED. High-quality fuse holder, you can very easy to replace fuse from the outside, ATC/ATO auto fuses are easy to get and are...
  • Enclosure: High quality aluminum enclosure,thickness 1.5mm/0.06".
  • Overall Dimensions(maximum, w/o cables): L180mm x W62mm x H33mm / 7.09"x2.44"x1.30". Gross weight: 300g, Net weight: 230g
  • Packing list: 1x Distribution module, 9x black power pole housings, 9x red power pole housings, 9x PVC cover flame retardant sleeve, 18x silver plated...
Bestseller No. 4
Dualband Antenna 2meter 70cm Mobile VHF/UHF Ham Radio (137-149, 437-480 Mhz) Mag Mount Magnet Base...
  • Include: X1 18 inches Dual-Band VHF & UHF Antenna, X1 10 Ft RG58 Cable with PL-259 Connector and Magntic Base.
  • Fastly Installation: 2.95" Strong Rare Earth Magnet Base. Fix it on the car roof in a second.
  • High Performance: To get better Performance, You can change the antenna positions on the top of car. Omni-Directional Dual-Band VHF & UHF...
  • More Durable: Waterproof Design,Stainless Steel Antenna,RG58 Heavy duty Cable,Antifreeze materials
  • Quality Assured: One Year Warranty, Just Replace New for you if quality problem.
SaleBestseller No. 7
MFJ-259D MFJ259D Original MFJ Enterprises Antenna Analyzer, VHF/220 MHz (100-160 KHz, 280-520 KHz,...
  • ame great performance as the popular MFJ-259C, but with two additional frequency ranges (100-160KHz and 280-520KHz)
  • Large easy-to-read two line LCD screen and side-by-side analog meters clearly display your information. Super easy to use! Just set the bandswitch and...
  • Use 10 AA or Ni-MH batteries (not included) or 110 VAC with optional MFJ-1312D (not included)
  • Adjust your Yagi, quad, loop and other antennas, change antenna spacing and height and watch SWR, resistance and reactance change instantly. You’ll...
  • Complete ham radio test station with frequency counter, RF signal generator, SWR/Resistance/Reactance/Coax Analyzer, Capacitance/Inductance Meter and...
SaleBestseller No. 8
MFJ Enterprises Original MFJ-915 RF Isolator 1.8-30 MHz, 1500W PEP, SO-239
  • The RF Isolator is effective from 1.8 to 30 MHz
  • RF Isolator is a 1:1 Current Balun designed to be placed in line with a 50-Ohm coax.
SaleBestseller No. 9
Siglent Technologies SDS1202X-E 200 mhz Digital Oscilloscope 2 Channels, Grey
  • Country of origin : China
  • Real-time sampling rate up to 1 gsa/use
  • IRecord length up to 14 Mpts
  • Standard serial bus triggering and decode, supports iic, spi, uart, Rs232, can, and lin
Bestseller No. 10
HYS VHF UHF Mult-Band Mobile Radio 2 Meter & 70cm Antenna 37.9 Inch 144/245/430Mhz Whip Antenna for...
  • FrequencyRange: 144/245/430Mhz;Gain :3.5dBi/4.5dBi/6dBi.
  • Maximum Power Input-watts :100W (FM).
  • Connector:SL-16 Female; Height:965±5 MM.
  • Radiating Element Material:Stainless Steel.
  • Mobile radio antenna working for 144/245/430Mhz mobile car radio, such as Kenwood Motorola, AnyTone, BaoFeng, Wouxun.
Bestseller No. 11
MFJ-4230MV MFJ4230MV MFJ4230-MV Original MFJ Switching Power Supply - 30 Amps, 13.8 VDC
  • 30 Amps Surge (up to 5 minutes), 25 Amps Continuous. 4 to 16 VDC adjustable output, detent at 13.8VDC. Light weight, only 3.4 lbs/1.35kg
  • Compact, only 5” x 2 ½” x 6” (W x H x D). 0 to 16V and 0 to 32 A selectable backlit meter. Five-Way binding post for high current radios
  • Over Voltage protection. Over Current protection with “FAULT” LED. QUIET Internal Cooling Fan with ”FAN” LED
  • Super Regulation, works with AC input from 85 to 135 VAC (115VAC model) or from 170 to 260 VAC (230VAC model), 47-63Hz
  • Ripple and Noise <100mV. AC Line Fuse( 6.3 Amps)
Bestseller No. 12
MFJ Enterprises Original MFJ-916B 1.8-225, 350-540 MHz Duplexer - SO-239
  • Frequency range: 1.3-225, 350-540 MHz.
  • Output: 2 x SO-239
  • Power (Watts): 200
  • Insert Loss (dB): .20, VSWR: <1.2
  • Isolation (dB): > 55, Impedance (Ohms): 50
Bestseller No. 13
MFJ-4602 Window Antenna Feedthrough Panel with SO-239, Balanced Line, and Wire Antenna Connectors
  • weather-proof window feed through panels bring HF/VHF/UHF antennas, balanced lines, random wire antennas, ground, DC/AC power and Rotator/Antenna...
  • 3 x SO-239 / 1 x Balanced 2-Wire Terminals / 1 x Random Wire
Bestseller No. 14
MFJ-1778 MFJ Enterprises Original G5RV Wire Antenna 160-10 Meters, 102 Ft Long
  • 102 feet long, shorter than 80 Meter dipole. Use as inverted vee or sloper to be more compact. Use on 160 Meters as Marconi with tuner and ground....
  • Covers all bands, 160-10 Meters w/ Antenna Tuner.
Bestseller No. 15
MFJ Enterprises Original MFJ-918 MFJ 1.8-30 MHz Balun 1:1, 1500W PEP
  • The 1:1 Current Balun was designed to replace the center insulator of a dipole antenna. It is made up of 50 Ferrite Core Beads placed onto a 13-inch...
  • The coax and SO-239 connectors have Teflon(R) for maximum insulation and extended life of the product. The MFJ 1:1 Current Balun is enclosed in...
  • The MFJ Current Balun will reduce or eliminate stray RF often found on coax. This stray RF can cause burns and other problems with electronic...
SaleBestseller No. 16
MFJ Enterprises Original MFJ-913 Balun 4:1 Current 300 Watts
  • 300 Watt true current baluns/antenna center insulators that transforms 200 ohms to 50 ohms.
  • Transmission Line Transformer construction using 100 ohm characteristic impedance transmission line gives flat 160-10 Meter response.
  • Large low permeability ferrite cores easily handle full power.
  • SO-239, stainless steel hardware with direct 14 gauge stranded copper wire connection to antenna.
  • Heavy duty weather housing. Measures 4¼ x 2 inch diameter.
Bestseller No. 17
MFJ-1699T 10-Band HF/VHF 80 Thru 2M Mobile Antenna with 3/8-24 Connector, Handles 200W
  • Operate 80, 40, 30, 20, 17, 15, 12, 10 Meters HF mobile and 6 and 2 Meters VHF with just one amazing antenna!
  • MFJ-1699 features low SWR and 200 Watts power handling for a super-performing mobile HF/VHF antenna.
  • Changing bands is super-easy -- just change the tap on the “wander-lead” to the next band you want to explore.
  • Maximum height is 65”.
  • The 3/8-24 connector makes it easy to mount on any type of lip, trunk, magnet or pipe type mount.
SaleBestseller No. 18
Mfj-264 Dry Dummy Load, 1.5kw, 0-600 Mhz , SO-239 Input
  • IMPEDANCE: 50 OHMS VSWR: Less than 1.3:1 at less than 650 MHz
  • POWER DISSIPATION: 1500 Watts for less than 10 seconds - 100 Watts for 10 minutes
  • VOLTAGE GRADIENT: 10 kV/in
  • OPERATING TEMPERATURE: Up to 350C
  • FREQUENCY RANGE: 1-650 MHz; usable to 750 MHz
Bestseller No. 19
Chunzehui F-1006 Low Loss Power Gate PWRpath Module, PowerPath PWRgate.
  • Design based on powerpath controller and low loss MOSFETs (on status resistance 0.0023 ohm), you do not have to add heatsinks even for 30 Amps of...
  • Operating voltage: DC 5 ~ 28V, Quiescent current: < 2mA (at 13.8V), Max. continuous output current: 30A, Switch circuit: Power MOSFETs "OR-gate" with...
  • Standard Power pole connectors.
  • High quality aluminum enclosure, thickness 1.5mm/0.06". Overall Dimensions(maximum, w/o cables): 80mm x 62mm x 33mm / 3.15" x 2.44" x 1.30"
  • Attachment includes: 3x black power pole housings. 3x red power pole housings. 3x PVC cover flame retardant sleeve. 6x silver plated copper 30A...
Bestseller No. 20
MFJ-941E MFJ941E MFJ Enterprises Original HF Antenna Tuner with Mini Cross Meter, 300 Watts
  • The MFJ-941E gives you a 300 Watt antenna tuner that covers everything from 1.8 - 30 MHz -- plus you get a lighted Cross-Needle meter with on/off...
  • MFJs lighted Cross-Needle meter shows SWR, forward and reflected power all at a glance in 300/60 and 30/6 watt ranges, 8 position antenna switch lets...
  • An efficient 12 position airwound inductor gives lower losses and more power out. Has 4:1 balun, 1000 Volt capacitors. The beautiful aluminum cabinet...

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