Prosty nadajnik CW na QO-100

https://www.dd1us.de/Downloads/739%20MHz%20bandpass%20filter%20for%20QO-100%20%20rev3.pdf https://www.digchip.com/datasheets/parts/datasheet/2/943/GSIF_TB1125A.php https://www.temwell.com/en/products/TTL63190F-739M.html https://observablehq.com/@eu2aa/cavity-filter-739mhz https://www.golledge.com/search/?q=739

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