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I am sure you know this, but I will state it anyway- the power out of the radio is rated into a 50 ohm load. If you are not using a dummy load to determine your output power, you are probably only reading the forward power. The reflected power can be checked by first ensuring you are in RX mode on the transceiver, then rotate the slug so it points opposite the load (make sure the slug is rotated all the way so the arrow is fully rotated 1/2 turn), then transmit and read the reflected power. The total power out of the radio is the forward power, plus the reflected power.?

If you are using an antenna while you are making the measurements, be prepared to see the forward/reflected power "dance" around- that is the antenna and/or trees in the near vicinity moving, and changing the loading of the antenna. If you have vertical structures within 10-30 feet or so of the antenna, they can be inducing reflected waves back through the antenna, and through the watt meter.?

The only good way to test the radio is to hook it to a dummy load with sufficient capacity to maintain the 50 ohm impedance while you are checking and adjusting the radio.?

While you may be able to run the radio at higher power (over the 10 Watts specified), you will most certainly reduce the service life of the output transistor, and perhaps some of the components in the output matching network (check the schematic for part numbers of the subject parts and check their ratings). A good rule of thumb is to 50% de-rate the parts- want 20 Watt capability?- replace any part that isn't rated 40 Watts or above (many parts will be rated in voltage/current values, so develop the wattage capacity from those values).

I hope this helps.

Regards,

Shane?

KE7TR