Re: FPV backpack PCB build
Posted: Wed Nov 20, 2013 10:11 am
I think we discussed this before, but I just caught myself again building antennas for the wrong frequency.
The SDS Hobby modules use a "positive logic" (I don't know what the exact english term is) when describing 1 or 0. 1 means a voltage is at the pin, which means no jumper or connection. 0 means no voltage, thus pin is shortened to ground.
Looking at their channel mapping:
This translates to 5945MHz having no connection at all or all dip switches being open.
Please be aware of this when sourcing your antennas.
Best ...
suxi
The SDS Hobby modules use a "positive logic" (I don't know what the exact english term is) when describing 1 or 0. 1 means a voltage is at the pin, which means no jumper or connection. 0 means no voltage, thus pin is shortened to ground.
Looking at their channel mapping:
This translates to 5945MHz having no connection at all or all dip switches being open.
Please be aware of this when sourcing your antennas.
Best ...
suxi