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 |
132.87 (129.00) EUR |
266.77 (259.00) EUR |
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The Talking Wattmeter provides an aural spoken indication of power and SWR using a digitally recorded voice. It is ideal for the vision-impaired, for those of us in the “bi-focal set”, or just for those times when you need to be looking somewhere else. Instead of voice output the unit may be switched to 'variometer' mode where it outputs a tone with pitch changing according to SWR. Nice for those mobile stations who need to manual tune mobile antennas like HIGH SIERRA, because they still catch watch the raod and not the meter... After 30 secs without carrier the meters switch back to normal voice mode.
At the press of a button, the TW-1 speaks the forward power, reverse power or SWR. Three languages are available: English, Spanish and German. It includes its own internal speaker; no external audio
hookups are needed.
The device also offers a continuous tone mode for tuning. Simply press and hold the Forward button, and a tone indicates power. As you adjust your amplifier or antenna tuner, a higher tone indicates higher power. This is just the thing for peaking your amplifier while keeping a close watch on the grid current.
You can select either long or short voice reports. Long reports include descriptors like “thousand” or “hundred” and end with “forward watts” or “reverse watts”. Short reports speak only the numerical value of the measurement you’ve selected for a quick reading.
The TW-1 (HF) needs just 2 watts to operate, but will handle up to 2000 watts PEP, making it suitable for everything from QRP to the largest amplifiers in amateur service. The TW-1 is accurate to ± 5% of full scale across the entire power range; this may very well be the most accurate wattmeter you own. Resolution is 2 watts.
The TW-2 (VHF) needs a minimum of 0.2 Watt and handles up to 250 Watt
The TW-1 is microprocessor controlled, and can easily be upgrade in the field with a simple chip exchange. It requires 11 – 15 volts DC at 200 mA maximum, but consumes almost no current when not speaking.
| Order No. | Frequency range | Max. power | Min. power | Resolution |
|---|---|---|---|---|
| TW-1 | 1,8 - 54 MHz | 2000 Watt | 2 Watt | 2 Watt |
| TW-2 | 50/144/430 MHz | 250 Watt | 0.2 Watt | 0.1 Watt |
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.
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 two Yaesu rotators.
The device is shipped including one HF 2kW sensor, CD-ROM, USB cable and power supply.
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.
For mobile applications, two measurement ranges 15/60 watt and SWR. Frequency range: 140-150/430-450 MHz.
| SX-1000 | SX-27P |
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Feature:
SX - 27P |
Small SWR/Power-Meter for 2m and 70 cm upt o 60 W. |
SX - 100 |
for shortwave up to max. 3 KW |
SX - 200 |
for shortwave and 2m, max. 200 Watt |
SX - 400 |
2m and 70cm 140-525 MHz, max. 200 Watt |
SX - 600/SX-600N |
for HF and UKW, 2 separate sensors for 1,8- 160 MHz and 140-525 MHz |
SX - 1000 |
for HF up to UHF, 2 separate sensors for 1,8- 160 MHz and 430-1300 MHz |
| Type: | SX-100 | SX-200 | SX-400 | SX-600/SX-600N | SX-1000 | SX-27P | ||
|---|---|---|---|---|---|---|---|---|
| Frequency range | Sensor 1 | 1,6-60 | 1,8-200 | 140-525 | 1,8-160 | 1,8-160 | 140-160 | MHz |
| Sensor 2 | 140-525 | 430-1300 | 430-450 | 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 measurement | 3 | 1 | 4 | 1/4 | 1/2 | Watt | ||
| SWR range: | 1,0 - unendlich | |||||||
| 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 | |
| Conenctors: | PL | PL | SX-400: PL SX-400N: N |
SX-600: PL/PL SX-600N: PL/N |
PL/N | PL | ||
| Accessories: | Instruction sheet, power cable | |||||||
| Prices | 77.25 (75.00) EUR | 66.95 (65.00) EUR | SX-400: 71.07 (69.00) EUR SX-400N: 73.13 (71.00) EUR |
SX-600: 118.45 (115.00) EUR SX-600N: 120.51 (117.00) EUR |
164.80 (160.00) EUR | 72.10 (70.00) EUR | ||
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.
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| Model | SX-20C | SX-40C | |
|---|---|---|---|
| Frequency range | 3,5-30/50-54/130-150 | 144-470 | MHz |
| Power ranges | 30/300 | 30/300 | Watt |
| Precision | besser als 15% | ||
| Size | 85x87x95 | 85x87x95 | mm |
| Order No. | 24011 77.25 (75.00) EUR |
24010 86.52 (84.00) EUR |
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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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