Topband: Receive loop observations

[Don Kirk]

Hi Herb (KV4FZ),

You said "but the 50 turns is going to be a chore"

The only problem I find with winding a core with many turns is keeping
track of the number of turns.  What I do to solve the counting problem is
that I take a zoomed in picture showing all the windings (using my smart
phone camera, or one of my dedicated digital cameras), and this allows me
to easily count how many turns are really on the core (versus what I
thought I counted as I wound the core).

Take the picture so the core fills up almost the entire camera screen, then
when you view the picture you can zoom in even more (as needed) as you move
around the core counting turns.  I then add or remove turns as necessary
for the desired number of turns.  50 turns are easy to count using this
method.  I just counted 103 turns on a T68-6 core using this method (wire
size 30 awg = 0.010" diameter), and it took less than 2 minutes to count.

I now often watch TV while winding cores since real time counting is no
longer a critical task.

73,
Don (wd8dsb)