Hello to the Group,
Here's one more tidbit on the use of flat spiral
loading coils for dipoles.
Apparently, there is a commercial version already
made, that uses spiral, flat, loading coils at:
http://www.tak-tenna.com/
I am not an agent nor am I involved with that firm.
Regards to the...
Hi Jeff, VE1BLL and the Group,
The spiral coil is 1 foot square and has 24 turns of 1/8"
aluminum tubing.
How's that for a starting point?
I would settle for a *rule of thumb* when it comes to flat spiral coils.
I plan on using ladder line rather than coax, since the
SWR may be quite high...