"Nick" wrote in message
...

"Irv Finkleman" wrote in message
news:BW4ai.6472$xq1.1239@pd7urf1no...
Nick wrote:
I am wanting to experiment making vertical whips, end fed,...

End fed whips? Is there some other way they are fed? In the middle?
At the other end? Am I missing something (and at my age that is likely)?

Irv VE6BP

Good points guys...
( I guess a vertical dipole could be fed elsewhere ( centre / 1/3rd
of the way up etc.... )

I elaborate...

End fed half wave dipoles was the original intention, but as JS remarked,
an end fed 5/8ths
seems more interesting.....

One of my applications is for an aerial mounted on a motorcycle
windscreen, fed with
50 ohm co-ax for inter-bike comms... 70 cms (or possibly 2 mtrs)
but needs to be ground plane independent, hence the thought of a half wave
...

Another is a 16 foot whip for 10 mtrs ....... probably mounted just under
the house gutter

I just want to make myself something for the interest rather than buy
something

Thanks,

Nick


My trick for feeding a 5/8 is to wind the coil with an 1/8 wl of wire as a
starting point and then trim from there. Using the coil in seies with the
antenna with coax connected between the other end of the coil and the ground
plane(no taps, coil does not conect to ground). This provides a petty decent
match to 50 ohm coax that can be reined a bit by drooping your
counterpoise(radials).