This was produced for the 2018 G-QRP Buildathon. It has numerous features and was desinged for amateurs to use in the field when setting up and using an HF rig.
Parts costs were around 20 GBP at the time of writing (2018).
|Supply Current||220mA peak, normal operating 95mA @ 9V.|
|TX Input||Max 10W.|
|Voltage Range||DC 0V to 50V|
|Resistance Ranges||0.0 to -100 Ohms|
|100 Ohms to 10k Ohms|
|10k Ohms to 1M Ohm|
|SWR||1 to 10W|
|1.0 : 1 to 99.9 : 1|
|Forward Power||0.0 to 10.0W|
|Reverse Power||0.0 to 10.0W|
|Return Loss||0.0 to 10 dB|
|UTC Time||+/- 1 Second|
|Frequency||1MHz to 50MHz +/- 4Hz|
|1MHz to 29MHz <0.1W trigger|
|50MHz < 0.5W trigger|
|Lat, Lng||Approximately 5 decimal places accuracy|
|Maidenhead||Precise but depends on the latitude/longitude accuracy|
Here is the documentation pack, the code and the gerbers etc. for it. Please note, I cannot guarnetee any of the code or gerbers will work correctly with your supplier or build environment. Please check with me before comitting time/money on trying to reproduce these boards.