QRP Manual Antenna Tuner Z-Match 3-28MHz for Ham Radio CW, 5W Z-Match Tuner with BNC, Adjust Impedance Matching

Frequency: 3-28 MHzPower: rated power 5W, intermittent power 10WMatching impedance range: 25 to 2500 ohmsConnector: BNCNet weight: 261gHow to useThe front panel switch is used to select the mode. When it is in the TUNE n, the standing wave indicator circuit is accessed. When the transmitter is transmitting, the brighter the LED, the higher the standing wave. Two cpacitor controls are used to adjust the matching. The rear switch sets the antenna impedance.Note: Standing wave indicator LED.Note: It is essential to check the standing wave before transmitting,otherwise the ORP transmitter without high standing wave protection may burn out.Note: If quick tuning is not possible, use a network analyser for debugginAt this stage the mode switch should be set to WORK.Note: This tuner is for ORP only. Excessive power can cause components to burn out.Adjusting for a Match：With your transmitter and antenna connected to the turner,set the tune/operate to the tune position,set the adjustment knobs to the center position.Note: tune mode,maximum power input-5wattsPlace the HI/LOW impedance switch in the HI position.the HI impedance setting provides the most efficient coupling and operation.Briefly key your transmitter and attempt to adjust the knobs tp dimthe LED.Continue adjusting back and forth until the LED is out or is as dimas possible.If the adjustments do not produce adequate dimming of the LED switch tothe Low impedance position and repeat the adjustment process.Note:Under some conditions of match adjustment the LED vwill not go completely out, Your antenna will be tuned for proper operation even if the LED does not cdim completely out.Switch the tune/operate switch to the operate position. Work thoseDX stations.

• Frequency: 3-28 MHz, Rated at 5W continuous, 10W intermittent and supplied with BNC connectors for input/output.
• Compatible with a wide range of coaxial fed, long wire and balanced line antennas, such as high impedance, low loss UHF twin-lead or 40m-10m ladder line.
• Matching impedance range: 25 to 2500 ohms,Z-match tuner is more efficient (less lossy) than other types of tuners.
• Automatic Antenna Tuner machine with Shell, fine workmanship, small and exquisite,tuner can be used without assembly, which is a great help for tough outdoor use.
• Note: This tuner is only suitable for ORP. Too much power can burn out components.It is essential to check the standing wave before transmitting,otherwise the ORP transmitter without high standing wave protection may burn out.