Well,
I've added a FET switch to the sequencer I made last time. The FET switch will provide +12V on RX to the masthead and will be used to switch the masthead relay and also power the VLNA.
The schematic looks like this:
and it's built on the same bit of veroboard as the sequencer:
It switches very quickly, here in blue is the PTT being enabled and in Yellow the power supply that will head up the mast:
So we will then have 200+ ms delay before EVENT 1 from the sequencer:
which will be used for things like turning on the PA bias and enabling RF 'n' stuff like that.
All in all this is coming on nicely.
Local conditions.
I've added a FET switch to the sequencer I made last time. The FET switch will provide +12V on RX to the masthead and will be used to switch the masthead relay and also power the VLNA.
The schematic looks like this:
and it's built on the same bit of veroboard as the sequencer:
It switches very quickly, here in blue is the PTT being enabled and in Yellow the power supply that will head up the mast:
So we will then have 200+ ms delay before EVENT 1 from the sequencer:
which will be used for things like turning on the PA bias and enabling RF 'n' stuff like that.
All in all this is coming on nicely.
Local conditions.
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