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Trying to make it simple.? You regulate the voltage.? Let the device draw how ever many amps it needs or wants.? In the case of the ubitx it will be around 2 to 3 amps depending on the power it is putting out and how efficient it is.? ?If you do want to run less power to the antenna , use the RV1 pot to cut back the output power. You may think of this like your house wiring.? If in the US, most outlets are 120 volts and have 15 to 20 amp breakers.? If you plug in a 100 watt lightbulb, it will draw just under 1 amp.? If you plug in one of the newer LED bulbs it will draw around a tenth of an amp.? If you plug in a toaster, it will draw probably 10 or so amps.? If all devices are working correctly, they will only draw what they need to operate correctly. As I mentioned in the first post, if you set the current to 1.5 amps and it is wanting to draw 2 amps, your voltage will drop.? This can cause all kind of operating problems.? As another mentioned, the amplifying stages will become non linear and can cause the transmitter to generate undesired signals. If you do have a current regulating supply, set it to about 4 amps.? This is high enough to power the transmitter but low enough not to burn out too much stuff if there is a problem.? You should have a 3 to 5 amp fuse in the power line anyway to take care of major problems. KU4PT On Fri, Jun 29, 2018 at 11:48 PM, Gwen Patton <ardrhi@...> wrote: Thank you, Tim. |
