Re: sBitx v3 stopped producing RF output after long FT8 operation

Gordon Gibby KX4Z All Messages By This Member #115937 If one of the MOSFETS? ?shorts? the entire system fails to operate because it shorts out the power supply, may blow fuses, and you cannot establish the needed voltage on the system due to the short circuit from?+v to ground through the shorted mosfet. The problem you are having is very different and Im quite?curious what you find as the cause! Gordon KX4Z toggle quoted message Show quoted text On Fri, Feb 28, 2025 at 7:26?AM WZab - SP5DAA via <wzab01=[email protected]> wrote: In case of shorted MOSFET, wouldn't it impair the reception? In fact, indeed it may be a solder problem, because once I have lost power and stopped using my sBitx.? Next day I switched it one again, and the normal operation returned. This time the normal operation was not reestablished even after long cooling of the rig. Well, I have to disassemble the device, check MOSFETs and the solder. Anyway, adding a fan for active cooling of the heatsink seems to be a reasonable extension for longer operation in digital modes. 73, Wojtek SP5DAA

Join [email protected] to automatically receive all group messages.

开云体育