Gordon Haverland wrote:The last time I was looking around BangGood, I remember seeing driver boards and transducers there. A typical one is 35W @40kHz. From what little I've read about a bunch of ultrasound stuff (fish monitors, depth meters, ...) it seems that 40kHz is going to be fairly common. Why should these biology people have been looking at frequency?
Gordon Haverland wrote:I hadn't thought about Siberian larch. And (so far, with no time spent) you seem to be the only known source of seed. :-) I will look to see what is around.
Someone mentioned some kind of tree being harvested near Ft.Nelson, BC that was useful for some purpose in building houses. The only thing that came to mind was the native tamarack.
Thanks for the info.
What I don't understand is how they changed the earth's orbit to fit the metric calendar. Tiny ad:
HARDY FRUIT TREES FOR ORGANIC AND PERMACULTUREhttps://permies.com/t/132540/HARDY-FRUIT-TREES-ORGANIC-PERMACULTURE