You do need a tuner with a 1/2 wave end fed wire, but it is possible to
connect the wire directly to the tuner output. A counterpoise is still
required, but it can be much shorter than the counterpoise required for
a 1/4 wave antenna. See Moxon's book HF Antennas For All Locations.
73,
Bob WB2VUF
Bill Tippett wrote:
> NJ0IP wrote:
>
> Bill, you really have to be "a believer" to use these antennas if they
> really work like the first two sentences of that link claim:
>
> "The end-fed halfwave antenna is among my favorite for field operation. It
> is easy to setup, can be used without a feedline, and performs well."
>
> Can't remember ever seeing an antenna that could be used without a feedline
> ;-)
>
> I guess they mean you can just insert it into the transmitter. (?)
>
> Or was it a miss-print? Maybe he meant "without radials".
> *****************************************************************
>
> For the Par antenna, yes it can be used without
> any feedline, just direct connect to the transmitter.
> For an example, see a picture of me using mine directly
> connected to my KD1JV ATS-2 QRP rig here:
>
> http://users.vnet.net/btippett/cataloochee_divide_trail_qrp.htm
>
> Guaranteed to cool you off in July just seeing that picture!
>
> Classical end-fed networks do require at least a small
> counterpoise. I'm not sure if the Par is using the connected
> transmission line, or the case of the directly connected rig,
> but I can absolutely say it works incredibly well. I have home-
> brewed end-fed networks using info from AA5TB's site, but I
> always use a quarter-wave counterpoise wire.
>
> 73, Bill W4ZV
>
>
>
>
>
>
>
> _______________________________________________
> TenTec mailing list
> TenTec@contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
>
_______________________________________________
TenTec mailing list
TenTec@contesting.com
http://lists.contesting.com/mailman/listinfo/tentec
|