"Cecil Moore"

Experiment with it and see what
happens. You could just use wire for the
experimentation and hang it between two supports.

-----/////-----+-----FP-----+-----/////-----
hamstick wire wire hamstick

--
73, Cecil http://www.w5dxp.com

I have no hamsticks yet, but maybe I could use some simulation like this:
http://www.k7mem.150m.com/Electronic.../shortant.html

73 Jouko OH5RM

JN wrote:
"Cecil Moore"
Experiment with it and see what
happens. You could just use wire for the
experimentation and hang it between two supports.

-----/////-----+-----FP-----+-----/////-----
hamstick wire wire hamstick

--
73, Cecil http://www.w5dxp.com

I have no hamsticks yet, but maybe I could use some simulation like this:
http://www.k7mem.150m.com/Electronic.../shortant.html

If you use a fiberglass rod for the coil form similar
to the hamstick fiberglass rod and wind the same number
of turns of the same size wire on it, it should work.
But if you are going to go to that trouble, you might
as well wind high-Q coils.

In fact, if you replace the 75m hamstick coils with
large-diameter high-Q coils, you can probably increase
your radiated power by 1000%, i.e. 10 dB :-).
--
73, Cecil http://www.w5dxp.com

I made an interesting simulation for the ham stick dipole.

I first took total lenght 16 FT (2x hamstick), at 4MHz loading coils near
feedpoint calculated to be abt. 60 mikroH
Then I took total lenght 28 FT (8+6/FP/6+8) coils then moved to almost
center of elements. at 4MHz calculated 56 mikroH
and the same configuration at 3.56 MHz calculated 71MikroH for each coil.

Now 75m hamsicks seem to have abt. 60mikroH coils.
If you use 2x6Ft extenders at center you need 71 mikroH to resonate at
3.56Mhz.

This simulation uses ¨lumped coils not helical like in hamstick, but I think
it is possible to use 75m sticks with extenders and still you need to lower
the resonance for 80m CW use.

73 Jouko OH5RM

"JN" wrote in message
...

"Cecil Moore"

Experiment with it and see what
happens. You could just use wire for the
experimentation and hang it between two supports.

-----/////-----+-----FP-----+-----/////-----
hamstick wire wire hamstick

--
73, Cecil http://www.w5dxp.com

I have no hamsticks yet, but maybe I could use some simulation like this:
http://www.k7mem.150m.com/Electronic.../shortant.html

73 Jouko OH5RM

JN wrote:
Now 75m hamsicks seem to have abt. 60mikroH coils.
If you use 2x6Ft extenders at center you need 71 mikroH to resonate at
3.56Mhz.

Which gives you incentive to replace the hamstick
coils with relatively high-Q coils and thus increase
your radiation efficiency by magnitudes.
--
73, Cecil http://www.w5dxp.com