Re: #sBitx help bad transmit #sBitx
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Good morning,? The battery voltage applied to the sbitx is: 12.9 volts. A digital multimeter in the 10 amp scale was inserted into the positive lead for measurements. The "power on" current after boot up, connected to wifi is: fluctuating between .48 amps and .52 amps. After logout/shutdown option is selected, current only drops to .365 amps in "off" before physically flipping switch. This implies that something is still running. Red light is still visible through vents at this time.? The "power on, and radio app in receive mode current is: .545 to .580 amps and fluctuating.? Drive is set at 92, mic is set at 24 currently.? Mode is set to USB. The unmodulated transmit current is: 5.6 amps. The current while strongly speaking into mic is: also around 5.6 amps with modulation seen on screen. Same issue if TX button activated instead with mic unplugged from unit. Reference frequency for this test was:? 14.073 mhz as reported on the screen. Used 2 different 50 ohm dummy loads to compare, no difference.? Rf output per sbitx is: currently 15 watts Rf output as seen on external watt meter is: roughly 15 watts with analog scale. The problem IS some kind of hardware failure.? Steps taken so far: Per guidance from JJ W9JES, a very helpful and knowledgeable participant in your forum, I pulled the SD card, flashed a thumb drive with sbitx software pulled from the internet. Then booted from the thumb drive, updated, now on version 3.02 with the same problem. Placed the original sd card back in place with the same problem. In short. We have some kind of hardware failure that needs to be addressed under warranty. Good replacement hardware needs to be sent so I can begin using this radio, please. I await your decision with how you plan to proceed.?? Thank you,? Scott Rehme WD4PYT On Fri, Feb 9, 2024, 2:19 PM Scotty R via <Theroadcalls1=[email protected]> wrote:
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Scotty R