SWR manual

[KD2DYY]

Hey guys. Does anyone out there have a manual OR schematic for an old SWR meter that I just purchased on E-Bay...
It is a Para Dynamics model 3300............. The SWR function seems to be spot-on but my watt meter functionality is all over the place. Any help would be Greatly appreciated......

                                                                                                                     Mike 
                                                                                                                   KD2DYY

[K7MH]

What do you mean by "all over the place"? Does the meter not stabilize and jump around like a wire is loose? Or you don't get what you would think are accurate wattage readings?
I would not rely to heavily on that wattmeter for accuracy although it may be "ballpark" or relative.
It may be limited in bandwidth, often something like 1.8 to 150MHz and maybe not that high.

To operate it is very similar to most CB SWR bridges.
1. Put it in forward set
2. Key the transmitter and adjust the knob "SWR" to put the meter needle at the "set" mark on the lower scale.
3. Switch to REF to read the SWR or to one of the wattage scales to read the output.

For any change in power level, antenna, or potential for a different SWR you would go through the process again "recalibrating"
it for the change made.