Thanks, hopefully it explains and makes clear how the three outputs form a binary number as 4s, 2s and units and that sets the appropriate output on the 4028.
Simples! Mark On 06/02/2014 17:46, Dan Reynolds wrote:
Great work Mark. That will get me started for sure. My Si570 should be here today.Wayne, I think it's a good idea to double the contacts for higher power but I'm probably not going to have a power amp higher than 10 watts or so.73 Dan -- KB9JLO https://sites.google.com/site/on30ng/On Thu, Feb 6, 2014 at 5:52 AM, Mark G0MGX <mark.g0mgx@xxxxxxxxx <mailto:mark.g0mgx@xxxxxxxxx>> wrote:Hi Team I've done a bit more work on the output filter switching using a 4028 (which arrived today!). The wiki is updated: http://www.hfsignals.org/index.php/Final_Output_Filters Including a link to a simple sketch to try and illustrate how it works and enable others to prototype the ideas as I have. There will be more on this topic from me.... Mark G0MGX