Two different models available: CN-1xx is the smaller and affordable version, CN-8xx is the version with large instrument. Both models have selectable power ranges (see table), selectable power measurement average/peak. Easy to read cross needle instrument with illumination, solid metal cabinet.
CN-801HP with true peak power readout.
All Daiwa SWR meters can be selected to display avearge or peak power. The PEP value is found by different different charge/discharge constants and therefore is not very precise.
In contrast to that the new CN-801HP has a true, active peak envelope power (PEP) reading which is important for PSK31 and other digital modes. This function requires an external 12V DC power supply.
| Type | CN-101L | CN-103LN | CN-801HP | CN-801VN | CN-801S | |
|---|---|---|---|---|---|---|
| Frequency range | 1.8 - 150 | 140 - 525 | 1.8 - 200 | 140 - 525 | 900 - 2500 | MHz |
| Power ranges | 15/50/1500* | 20/200 | 20/200/2000* | 20/200 | 2/20 | Watt |
| Min. power for SWR measurement | 4 | 4 | 5 | 5 | 0.5 | Watt |
| Connectors | PL | N | PL | N | N | |
| Size of instrument | 62x40 | 93x67 | mm | |||
| Size of case | 155x80x100 | 155x80x100 | 155x109x120 | 155x109x120 | 155x109x120 | mm |
| Tolerance | ±10% of full range | |||||
| Order No. | CN-101L | CN-103LN | CN-801HP | CN-801VN | CN-801S | |
| Price | 100.94 (98.00) EUR |
101.97 (99.00) EUR |
143.17 (139.00) EUR |
118.45 (115.00) EUR |
221.45 (215.00) EUR |
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Giant SWR Meter MFJ-869.
19cm wide, 17cm high, 16cm deep and not to be ignored on your desk! The giant SWR meter by MFJ is controlled by a micro processor and shows peak or average power as wel las the reflected power. The three ranges with 20, 200 or 2000 max. are selected automatically. Maximum power is 1500W, frequency range from 1.8 to 54 MHz.
An SWR Alarm value can be selected from 1.5 to 3.0 in steps of 0.5. When reaching this SWR value (accidently) an acoustic and visual alarm goes off. Further the PTT line of the amplifier can be looped through the MFJ-869, this line is cut when high SWR happens, thus protecting your amp. Plus you have an additional relay contact (NC or NO) for other alarm actions.
The MFJ-869 giant SWR meter requires 12 to 15V supply voltage, max. current requirement is 350mA. A DC cable with suitable connector is included. Coax connectors on the rear side are PL (SO-239), the relay contact is on a 3.5mm phone jack, the amp PTT line is connected though cinch connectors. An further 9-pin serial SubD connector is used for software updates. When no HF power is seen by the SWR meter the processor switches to sleep mode to save power and prevent spurious noise on HF.
Inserted directly into the antenna feedline, measures antenna current in three calibrated ranges.
Use the RF current meters for precise measurements of antenna currents, while tuning your amplifier or tuner, calculate the impedance of your antenna feedpoint. Highly suitable for experiments with antennas or monitor changes of the antenna during operation.
Tuning for maximum antenna current usually results in highest radiated power (power rises to the square of the current). The minimum SWR is not necessarily the point where the highest antenna current is found. Or compare the efficiency of various tuners, the MFJ HF current meters identify losses quite easily.
The MFJ HF current meters are solid constructed devices for shortwave. Frequency range 1 to 30MHz, calibrated ranges for max. 0,3, 1 or 3A. 3A correspnd to 450W on a 50Ω antenna.
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Connectors PL sockets fpr direct insertion into the feedline. Large, backlit analog instrument, size 152 x 89 x 114mm, weight 425g.
Ideal to check the current balance of parallel wire feeds. The large bar in the middle of the instrument clearly identifies the range of balanced current on both wires. Balanced currents lead to less radiation from the feedline, reduces distortion of the antenna pattern, less risk of TVI and BCI. The MFJ-835 allows you to analyse the problems exactly.
Binding posts for parallel wire. Large, backlit analog cross-needle instrument, size 152 x 89 x 114mm, weight 620g.
The MFJ-836 combines both an SWR meter and a HF current meter, resulting in a compact control showing all antenna parameters.
Lage cross-needle instrument for VSWR/Power, max. range 300/3000W selectable, peak or average power selectable. Analog instrument fpr HF current up to 3A. Connectors PL sockets, size 152 x 89 x 114cm, weight 650g.
Ranges MFJ-836: 0.3, 1, 3A
Ranges MFJ-836H: 3, 10, 30A
The MFJ-854 is a very sensitive HF current meter. The sense coil snaps over any wire, radiator or cable and measures the true current flow in that conductor. This allows to measure currents in parts of an antenna, in radial or ground networks or on coaxcales. Also detects induced current in other conductors, like any household appliance and helps in identifying interferences like TVI or BCI.
Five fixed ranges from 30mA to 3A or one variable range selectable. The variable range has a minimum sensitivity of 1mA, enough to sense smallest currents like those from the MFJ SWR meters MFJ-259B or MFJ-269.
MFJ-826B
Measures power and SWR on HF and 6m.
Forward and reflected power, SWR and tx frequency can be displayed at the same time. Alternatively TX power and SWR can be displayed as easy to read bar graphs. The MFJ-826B has as backlit 2 line LC display. Softwareupdate are possible over the RS232 serial interface.
| Power ranges: | 25/250/1500 Watt |
| Frequency range: | 1.8 - 54 MHz |
| Operating Voltage: | 12-15 V |
| Power requirements: | 250 mA |
| Size: | 165x70x170 mm |
| Connectors: | 2x PL female |
MFJ-813
SWR/Wattmeter for QRP
The MFJ-813 offers a calibrated scale up to max. 5 Watt and allows measurements of power and SWR, the minimum power is 100mW. The sensor (system Bruene) detects RF voltage and current for a uniform accuracy over a wide range of impedances, frequencies and power. Frequency range 1.8 to 50MHz, aluminium case, 2x SO-239 (PL) connectors, size 11.5 x 6 x 7.5 cm.
The new WN-2 power meter measures and displays output power or SWR of up to four radios/antennas at the same time.
Up to four sensors for power/SWR can be connected to the device and can be installed at the point where they are rquired; sensors are available for 1.6 to 470MHz and up to max. 8KW.
The measured data is displayed on a computer connected via USB. The required software for Windows XP or Windows Vista is included.
When operating standalone the data is shown on the internal LC display. So a computer is not required, but of course would give a much better overview.
The WN-2 measures spectrum and envelope of the transmitted signal up to 20kHz modulation bandwidth. Intermod, splatter or overmodulation can be seen immediately. The required fast sampling rate of the transmitted signal is achieved by using a fast RISC processor in the sensor.
Additionally the WN-2 offers four analog (0 to 10V) and four digital (TTL) inputs for many measurement tasks. A programmable solenoid output offers the possibility to emergency shut-down, for example in the case of high SWR. Another option is the board to control a Yaesu rotator.
The device is shipped including one HF 2kW sensor, CD-ROM, USB cable and power supply.
SX-1100
High performance meter well superior compared to the CB gear. All equipment features 12V DC input for powering the illumination and display LED's. However, can be operated at full functionalities without the external power supply.
Those meters having two separate RF sensors (see table) may be connected simultaneously to two transceivers with the appropriate antennas. Switchover between the sensors is done by means of a switch located in the box.
SX-27P
| Type: | SX-100 | SX-200 | SX-400 | SX-400N | SX-600 | SX-600N | SX-1100 | SX-27P | ||
|---|---|---|---|---|---|---|---|---|---|---|
| Frequency range | Sensor 1 | 1,6-60 | 1,8-200 | 140-525 | 1,8-160 | 1,8-160 | 140-160, 430-450 | MHz | ||
| Sensor 2 | 140-525 | 430-1300 | MHz | |||||||
| Power ranges: | 30/300/3000 | 5/20/200 | 5/20/200 | 5/20/200 | 5/20/200 | 15/60 | Watt | |||
| Min. power for SWR measurements | 3 | 1 | 4 | 1/4 | 1/2 | Watt | ||||
| SWR Range: | 1,0 - ∞ | |||||||||
| Insertion loss: | 0,1 | 0,15 | 0,2 | 0,2/0,3 | 0,2/0,15 | 0,3 | dB | |||
| Impedance: | 50 | 50 | 50 | 50 | 50 | 50 | Ω | |||
| Connectors: | Sensor 1 | PL | PL | PL | N | PL | PL | PL | PL | |
| Sensor 2 | PL | N | N | |||||||
| Price | 77.25 (75.00) EUR | 66.95 (65.00) EUR | 71.07 (69.00) EUR | 73.13 (71.00) EUR | 118.45 (115.00) EUR | 120.51 (117.00) EUR | 184.37 (179.00) EUR | 72.10 (70.00) EUR | ||
| Order Nº | 24001 | 24002 | 24003 | 24003.N | 24004 | 24004.N | 24005 | 24008 | ||
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SX-20C and SX-40C: Compact meters from DIAMOND also suitable for mobile applications. Simultaneous display of forward and reflected power and SWR. Two measurement ranges, needs 3 watts minimum for VSWR. SX-240C has two sensors (HF, V/UHF), max. 3000W on HF, all connectors PL female.
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| Model | SX-20C | SX-40C | SX-240C | |
|---|---|---|---|---|
| Frequency range | 3,5-30/50-54/130-150 | 144-470 | 3.5-54 & 140-470 | MHz |
| Power Range | 30/300 | 30/300 | 30/300/3000 | Watt |
| Precision | better than 15% | |||
| Size | 85x87x95 | 85x87x95 | 110x170x125 | mm |
| Order No. | 24011 77.25 (75.00) EUR Buy now | 24010 86.52 (84.00) EUR Buy now | 24007 200.85 (195.00) EUR Buy now | |
With the MFJ-259B get your antennas properly tuned for maximum performance. Connect to the feed line, set the bandswitch and tune the dial - just like a transceiver. Read the antenna SWR and complex impedance. By tuning through you see instantly the antenna resonance frequency. Frequency range: MFJ-259B: 1.8 - 170 MHz, MFJ-269: additionally 415-470 MHz. External 12V supply or internal batteries (10x AA size).
The MFJ-207 10-160 Meter Antenna SWR Analyzer gives you a direct readout of your antenna's SWR without the need for formulas or indirect readings. The MFJ-207 can also be used to adjust a tuner to match your antenna without the need for transmitting. The frequency coverage for the MFJ-207 is approximately from 1.75 MHz to 30 MHz in five bands. This provides a very smooth reading of SWR at high frequencies. The coverage for each band may slightly vary from the coverage labled on the cover. The bands and coverage are:
It has a jack for an external frequency counter. The MFJ-207 uses a 9V battery or external EDC 12V. It measures 19H x 6.5W x 5.7D cm.
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