RHF wrote:
N9NEO - 9" Diameter ? -or- 9" Circumference ? ~ RHF


Was hoping you would show up. That 9" was the diameter. I stuck my
portable inside and worked real well and tuning wasn't so critical.
If you've got any pointers on the next design then I'm all ears - maybe
a slightly larger diameter. I'm thinking just getting out of he city
will be a big plus. I'm going totally primitive with the campsites -
no electricity, so hope it should be very quiet.

My Degen radio doesn't use the built in preamps when an external
antenna is plugged in. Not having any experience with larger loops I
really have no idea what I'm going to need to interface with the radio.
I would like to do 75m with the loop, and would prefer a hard wire on
broadcast band so I don't have to stick my radio in the toob. I should
be able to modify the Degen no prob if need to. I think I should be
able to get by with a simple mpf102 jfet amp. I think the input Z of a
3904 transistor is too low to do me any good. I don't think I need to
pay attention to balance on the loop if I just link couple a turn close
to the main loop and feed into a single end amp. But I am out of my
element when it comes to this kind of electronics.

My twisted terminated folded dipole you helped with is doing a nice job
up in the attic. Maybe a long wire will go up across the river in the
way back this fall.

73
NEO