Question about Modems
I have an odl micronta swr meter.Has swr/cal switch,cal addjust knob and a selector switch for 1-2 antennas.I have on operating info
An SWR meter is used to see how well your antenna is matched to your transmitter output, just like using the correct speakers with an amplifier.
There are usually two readings. FORWARD and REFLECT
or FWD and REFL
Firstly, make sure the antenna selector is in the correct position and set for the antenna you are using.
Next, switch your meter to FWD (FORWARD). Switch your transmitter to low power and press the microphone key.
Next, adjust the CAL knob for the maximum power reading, but not so far that the meter exceeds maximum!
Keep the microphone key pressed and switch to REFL (REFLECT). If your antenna is matched, the meter should now give a low reading. If the reading is very high, you must match your antenna by making adjustments or by using a matching unit.
A poor match will mean a poor signal. A very poor match can damage your transmitter and cause interference.
When you have a good FORWARD reading and a low REFLECT reading, your system will be reasonably matched and you can then use higher power. Remember that you will need to reduce the CAL knob to a lower setting when running high power.
Posted on Mar 06, 2008
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