Accessories for Power supplies, Power Distribution

New Multimeter to grind with Power Pole connectors


The device is simply connected into the power cord of any device and measuring current, voltage, watt, ampere and the corresponding peak values.

Wide measuring range of 4.8-60V / 0.1-65A (130A peak) with 10mA or 10mV resolution. Blue, backlit display that can display 4 measurements simultaneously. The Ah Counter is suitable for simple determination of batteries capacity, reset by power interruption.

Specification RR-WATTMETER
  Minimum Maximum Unit
Voltage 4,8 60 V
Current 0,1 65 (130A Peak) A
Power 0 6554 Wh
Dimensions - 85 x 42 x 24 mm
Weight - 82 g
Order No.
RR-WATTMET DC inline Multimeter 67.90 € Buy now
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PWRcheck Power Measurement with USB connector


PWRcheck is an instrument for power measurements of DC voltages. A USB connector can be used to read the measured or stored values to a computer. The instrument is inserted into the DC line between source and sink, connectors are Anderson PowerPoles®.

The PWRcheck instrument measures all required values of a DC-powered device like voltage, current, wattage and amp hours. It measures all voltages from 0 to 60V DC, current up to 40A continous load. The display can be switched to display various combinations of these values, either digital or analog display. The precison of the PWRcheck is ±10mV and ±10mA. The dot matrix LC display is backlit, two push buttons on the front panel help select the display.

The PWRcheck instrument can also be used as a data logger. Measured values are stored in regular, adjustable intervals and can be read later via the USB interface. The instrument stores up to 174.000 values, taking one measurement per minutes this adds up to more than four months of data! This enables you to monitor remote installations like repeater stations, solar power panels or battery backups over a very long period. The data memory is retained also when powered off. The USB interface also offers varios configuration parameters, for example alarm values for voltage and current. The required Windoes software is included in the shipment as well as an USB cable. The software also permits to read the real time values of measurement. A graphical display shows long term data, the data points can be exported to a spreadsheet software.

The PWRcheck is supplied either by the source which is currently measured, or by USB. When measuring voltages below 8V a USB connection is mandantory. The own consumption is between 60 and 120mA. The backlight of the LC display has an adjustable timeout to save power. The metal case has screw terminals for easy installation to the wall or in an instrument cabinet. Size 117 x 70 x 25mm, weight 500g.

Technical Data RR-PWRCheck
  Minimum Maximum Unit
Voltage Without USB 8 60 V
With USB 0 60 V
Current Without USB 0.12 40 A
With USB 0.025 40 A
Power Without USB 0.96 200 W
With USB 0 200 W
Own consumption Without USB 0.06 0.12 A
With USB 0 0 A
Precision Spannung ±10 - mV
Current ±10 - mA
Logging Interval 1 60 sec
Size - 117 x 70 x 25 mm
Weight - 500 g
Order No.
RR-PWRCHECK PowerCheck instrument with USB 217.00 € Buy now
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Download: Test Review RR-PWRCHECK from Funkamateur 9/2011 (German) (PDF, DE, 560KB) By friendly permission of the publisher.

MFJ-4416B Voltage Booster


MFJ-4416B Voltage booster for 12V DC

The voltage booster MFJ-4416B helps with better efficiency and assures always the right volatage for your radio equipment, especially in mobile environments.

Most of todays 100 W mobile HF transceivers are designed for an operating voltage of 12 to 16V. With voltages below 12V many things go awry: distorted modulation, loss of output power and undefined states of the digital electronics.

With mobile installations, there are usually two main reasons for under vorltage: a) voltage drop on the power cable and b) low battery voltage.
In the first case, even very small resistances on connectors, fuse holders etc. cause a large drop in voltage. A resistance of just 1/10 ω leads to a drop of 2V at a current of 20A. The second reason is the battery voltage itself: with the motor running the generator easily puts out 14V or more. But when the motor is off the battery voltage quickly drops to 12V, even with a new battery.
This low battery voltage, combined with cable losses - and your radio has a problem!

The MFJ-4416B prevents such problems reliably by boosting the input voltage (down to 9V!) up to a constant 13.8V. This at a max. current of up to 25A peak! The conversion has an efficiency of nearly 90%.

The compact device (size 196x100x54mm, weight ca. 700g) is solidly constructed and made for the demanding mobile environment. The connections for input and output on the MFJ-4416B are Anderson PowerPoles and additionally large binding posts. An internal fuse (30A) protects the stabiliser against overload. The minimum accepted input voltage can be adjusted to 9, 10 or 11V (10V is the default setting). This prevents a deep discharge of the battery. The output is protected with a crow-bar against overvoltage, in case the voltage regulation should fail.

Another feature further raises the efficiency of power consumption:
A HF sensor input recognizes if the transmitter is on or not. When receiving the voltage regulator can be bypassed and the loss of efficiency due to the conversion can be alleviated. To use this feature you need a T junction and a short coaxial cable. This function can be turned off, so you have "Boost always" or "Boost only when transmitting".

Order No.
MFJ-4416B Voltage Booster 13.8V 189.80 € Buy now
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MFJ-4416BRC Remote Control and Display unit for VOltage Booster


Suitable for the Voltage Booster MFJ-4416B (see above) the MFJ-4416BRC is a remote control and display unit. The device shows the input and out voltage on large analog instruments, given you an instant overview of the current power supply situation. At the same time an audible alarm for 'low battery' can be enabled and disabled from the remote control. Finally the operation can be switched from 'continous boost' to 'boost on transmit'. The latter function requires the feed of the HF signal to the voltage booster.

The voltage booster MFJ-4416B and the remote control unit MFJ-4416BRC are connected with a standard Ethernet cable with RJ-45 plugs. The maximum length is not specified by the manufacturer, it can be several meters. Size 13 x 8 x 5 cm (W x H x D).

Order No.
MFJ-4416BRC Remote Control and Display unit for voltage booster MFJ-4416B 97.80 € Buy now
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PowerGate PG40S Backup Power System

Bild Powergate PG-40S

A Super PWRgate is a 12 volt backup power system that can supply up to 40 amperes continuously from either a Power Supply or a Battery, and can also charge the battery with its high performance charger. Connected equipment will instantly switch to battery during a power blackout or power supply failure. No glitches.

The circuit uses two 80 ampere Schottky diodes as an OR-Gate to isolate the battery and power supply from each other. Forward voltage drop of less than 0.3 volts at 20 A. To keep the battery fully charged and ready for use, the Super PWRgate has a built-in four-stage battery charger with selectable current rates of 1, 4, 7 or 10 amperes.

The circuit is optimized for use with GELLED & AGM type batteries, but will keep flooded lead acid and marine type batteries near full charge as well. The Super PWRgate and the power supply may also be used to charge a battery that is powering the radio, as described by W1ZR in QST.

  • Maximum Voltage: 18 Volts DC
  • Maximum Current: 40 Amperes
  • Circuit: Diode OR-Gate
  • Diodes: Two Schottky 80 Ampere, 20 Volt
  • Voltage Drop: 0.25 Vdc at 1 Ampere, 0.5 Vdc at 40 Ampere
  • Charging Circuit: Charging regulator IC, low drop Field Effect Pass
  • Transistor, Fuse switched for 1,4,7 or 10 Amp charging current
  • Peak voltage limit set via internal jumper according to used battery technology
  • 3 LEDs showing charger status
  • Connectors: Anderson Powerpoles, 40A
  • Size: 13.4 x 10 x 4.2 cm
  • Weight: 0.4 kg
Order No.
RR-PG40S 171.40 € Buy now
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DC Outlet für Switch and Fuses New

MFJ-1118 MFJ-1118

Versatile DC distribution strip for high currents.

The MFJ-1118 DC distributor offers two individually fused connections for high current, for example to supply HF radios. Further six connection with a common fuse are available for smaller devices like VHF radios and other accessories. These six outputs are switched with one common switch. An analog instrument show the supply voltage of the distributor, facilitating error detection of the radio station. The heavy duty supply cable is 120cm long and is equipped with ring terminals.

Order No.
MFJ-1118 DC Distributor with fuses and switch 110.00 € Buy now
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DC-Board with Fuses

DC Board with individual fuses. The 4 outputs of the new 4-way DC-Board PW-100 are separated secured with a robust automotive fuse with 30A each. The 4 mm output jacks have a additionally cross-hole to connect wires directly. The internal wiring is not carried out with a circuit board, but with stamped copper profiles for a low loss connectione. In the delivery are 4 banana plugs, solder lugs and a spare fuse included.

Order No.
40096 DC-Board with Fuses 39.95 € Buy now
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DC distribution

Distributor Voltaje DC distribution 40095

Multiple connections to one power supply, reduced cable mess in the shack. With DC input cable, 6 pairs out output lugs for DC plugs or direct cable connection.

Order No.
40095 DC Distribution 29.00 € Buy now
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DC Cable

Double braided wire 2 x 2,5mm². Highly flexible stranded wire, aluminum core with a copper coating. The wire thickness is sufficient for the usual 100 W short-wave radios with 22-23A current draw at 13.8V.

Order No.
40015 Double braided wire red/black 2 x 2,5mm², per meter 1.10 € Buy now
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Double wire control cable

Double wire control cable, 0.75mm² cross section, black PVC coating. Suitable for the control of magnetic loops that require only two wires (AMA Käferlein Loops or similar).

Order No.
40059.25 25m Double wire control cable, 0.75mm² cross section, black 15.00 € Buy now
40059.50 50m Double wire control cable, 0.75mm² cross section, black 28.00 € Buy now
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Cable ends

Bild Kabelschuhe Bild Ringoesen

Galvanized with isolation, crimp or solder (soldering can be problematic under high currents). Ideal for connection of radios to the power supply or distribution (above). Two versions available, one with 6.5 mm width, one with 8 mm width. Pack includes 10 pcs.

Order No.
42916.65 Pack w/ 10 pcs, 6.5 mm width 2.60 € Buy now
42916.8 Pack w/ 10 cps, 8 mm width 3.60 € Buy now
42917.65 Ring, Pack w/ 10 pcs, 6.5 mm 2.60 € Buy now
42917.8 Pack w/ 10 cps, 8 mm 3.60 € Buy now
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DC cables for radios

DC cable for HF radios, 6 pin

Bild DC-Kabel HF

DC cable for most HF radios (Kenwood, Icom, Yaesu) with 6 pin Molex connector. Each side (red/black) is equipped with a cable fuse. Cable length c. 2.5m, 2.5mm², other end no connector.

Order No.
DC-CABLE-HF DC cable for HF radios, 6 pin 22.40 € Buy now
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DC cable for VHF radios, 2 pin

Bild DC-Kabel VHF

DC cable for most VHF rigs (Kenwood, Icom, Yaesu) with 2 pin Molex connector (T shaped). Each side (red/black) is equipped with a cable fuse. Cable length c. 4m, 2.5mm², other end no connector.

Order No.
DC-CABLE-VHF DC cable for VHF radios, 2 pin 16.30 € Buy now
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DC cable for Yaesu VHF radios, 2 pin

Bild DC-Kabel 8900

DC cable for Yaesu FT-8900, FT-8800 etc. Each side (red/black) is equipped with a cable fuse. Cable length c. 4m, 2.5mm², other end no connector.

Order No.
DC-CABLE8900 DC cable for Yaesu VHF radios, 2 pin 26.00 € Buy now
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DC Cable for Icom IC-703

Bild DC-Kabel 703

DC cable for Icom IC-703. Without fuses, cable length ca. 4m, 1.5mm², other end no connector.

Order No.
OPC-1229 DC Cable for Icom IC-703 19.20 € Buy now
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DC cable for HF radios, 4 pin

DC Cable 4pin

DC cable for Icom IC-7000, IC-7100, IC-7200, IC-7600, FT-2000, FT-950, FT-450, TS-480, TS-590 et al. Each side (red/black) is equipped with a cable fuse. Cable length c. 2.5m, 4mm², other end no connector. Similar to Icom OPC-1457.

Order No.
DC-CABLE-HF4 DC-Cable 2.5m, with fuses (similar OPC-1457) 21.90 € Buy now
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DC Cable with barrel connector

DC Cable Hohlstecker DC Cable Hohlstecker

DC cable red/black for various accessories like SWR meters, tuners etc. With coaxial barrel connector with 2.5 mm inner diameter and 5.5 mm outer diameter. Cable 2x 0.75mm² Ø, 2000 mm long, other side open. Available with straight and angular connector.

Order No.
40076.G2555 DC cable with straight barrel connector, 2000 mm 2.40 € Buy now New
40076.W2555 DC cable with angular barrel connector, 2000 mm 2.40 € Buy now New
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DC Connectors for Radios

DC Connector, 6 pin

DC-Stecker 6pol weibl.

DC connectors for most HF radios (Kenwood, Icom, Yaesu), 6 pin plug, required female contacts supplied.

Order No.
42914.6F DC Connector, 6 pin 8.00 € Buy now
42914.6F.X01 Spare pins (4 pcs.) for 42914.6F 4.00 € Buy now New
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DC equipment jack, 6 pin

DC-Stecker 6pol männl.

DC jack, counterpart of the plug 42914.6F, as used in most HF radios (Kenwood, Icom, Yaesu). 6 pin jack, 4 male contacts supplied.

Order No.
42914.6M DC equipment jack, 6 pin 10.50 € Buy now
42914.6M.X01 Spare pins (4 pcs.) for 42914.6M 4.00 € Buy now New
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DC connector, 4 pin

DC plug for many newer radios like IC-7000, IC-7100, IC-7200, IC-7600, TS-480, TS-590, FT-2000, FT-450, FT-991 etc. 4 pin jack, female contacts.

Order No.
42914.4 DC connector, 4 pin currently not in stock! 8.00 € Temporarily not available
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DC T connector, 2 pin

DC-Stecker 2pol

DC connector for many VHF/UHF radios, T shape.

Order No.
42914.2S DC T connector, 2 pin 5.90 € Buy now
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Connector for Cigar Lighter

KFZ-Stecker fuer Zigarettenanzuender

DC Connector for Cigar Lighter socket, with 8A fuse.

Order No.
42928 Connector for Cigar Lighter 5.80 € Buy now
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Coaxial DC connector


Coaxial DC connector, inner diameter 2.5mm, outer diameter 5.5mm. Suitable for many devices like SWR meter, MFJ equipment and more.

Order No.
42913 Coaxial DC connector 2.60 € Buy now
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6-way fuse holder

Holder for 6 or 10 Car Fuses.
The connecting cable is supplied via a large screw and allocated to the outputs. The outputs are also srewed terminals. Each output is individually with max. 25A secured. Overall, the fuse holder can be loaded with 100A.

The housing is made of polycarbonate and has tin plated terminals. The fuses are protected by a stable, transparent cover.
The Fuses are NOT included!

Order No.
PP-FUSE-6 6-way Fuseholder 28.80 € Buy now
PP-FUSE-10 10-way Fuseholder 43.70 € Buy now
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Flying fuseholder for self confectioning

Automotive fuses are indeed much more robust than glass fuses, single Holders can be but poorly assemble themselves, because no right holders are available. The fuse holder has been injected with about 35cm cable length. Cut the cable simply where you need and insert in the power supply cable. Delivered without fuse. Ideal also in combination with the Power Pole connectors. The cable's diameter is 4 mm and its cross-section is 2mm².

Order No.
PP-FUSE Fuseholder 2.50 € Buy now
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DC 'Banana' connectors Male

Bild Bananenstecker

DC 'banana' connector male, red or black, cable connection solder connection

Order No.
42915.RT DC connectors 'banana' male, red 1.20 € Buy now
42915.SW DC connectors 'banana' male, black 1.20 € Buy now
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DC connectors Female

Banana jack, red or black, with soldering connection.

Order No.
42922.RT DC connectors 'banana' female, red 1.40 € Buy now New
42922.SW DC connectors 'banana' female, black 1.40 € Buy now New
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DC connector

DC connector (coaxial), inner size 2.5mm, outer size 5.5mm. Suitable for many accessories like SWR meters, MFJ equipment etc.

Order No.
42913 DC-Stecker 2.60 € Buy now
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