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Multiband bitX40 questions


 

Hi all, I have 2 BitX40s one on 40 meters and the other on 80 meters.Both are working ok, but I have plans to convert one of them to multi band operation. The hardware modification of the BitX40 board is already well documented on various sites, so that should not be too much of an issue.?

There are a number of issues I need to resolve mainly to do with the raduino programming.

Firstly I am a complete novice at arduino programming, but I can upload a sketch to the raduino ok.

so to my questions

1. How easy / difficult would it be to put some lines of code into an existing sketch to facilitate band changes? What hardware modifications would be required? say a momentary contact button like the function button used with the latest sketches (v1.09 etc). Say at the end of the tuning pot range instead of stepping 50 Khz up or down, when the button is pressed the rig steps up or down to preset bands ie 160, 80, 40, 20 etc.

2. Would it be possible for the sketch to automatically change sideband to USB for frequencies above 10Mhz?

3. Would it be possible to have a logic output that would could be used to drive relays to switch in and out various band pass filters used for the other than 40 meter band?


Thanks in advance.


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Mike VK3XL

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