It's fairly easy to modify the old version of the MTR3B to replace 30m with 17m. I made a quick after-the-fact video about how to do it. Only requires replacing about 8 or 9 SMD components, removing two turns each from the two LPF torroids for the 30m band and then adjusting the RX side via two pots. https://youtu.be/KoqJe-YhQ9A #LNR #MTR3B #MountainTopper #SOTA #hamradio #amateurradio #qrp #morsecode #K1JDV