开云体育

well i have got a Ft-40 that came with the bundle of radio's that i
got a short while ago, i am wondering weather i could feed a "off
center dipole" with some 300 ohm feeder, something like a 33/66Ft ratio?
i know it says dont use coax but if i just connect a wire i am limited
to about a 20 Ft vertical. any ideas?
colin KB3PNE

--- In YaesuTuner@..., "colin" <kinggreene2003@...> wrote:

well i have got a Ft-40 that came with the bundle of radio's that i
got a short while ago, i am wondering weather i could feed a "off
center dipole" with some 300 ohm feeder, something like a 33/66Ft

ratio?

i know it says dont use coax but if i just connect a wire i am limited
to about a 20 Ft vertical. any ideas?
colin KB3PNE

Hi Colin,
Yes, you can connect the FC-40 to your OCF with twin lead. However,
I use 450 ladder line and have read that 300 sometimes is not the best
because of the spacing between the leads wires.
I am unsure about your "don't use coax" comment. You need to use
coax between the tuner and radio, of course, but coax between the
tuner and antenna is a no-no. The loss will be much to great.
I also use a I.C.E. lightning suppressor for twin lead wire between
the coupler and my OCF.
GL & 73, Jeff/wb0m

Hi Colin,
Exactly what I do when operating portable, 300 ohm transmit grade
feeder about 15 metres long, feeding a longish doublet (60 metres
total I think, I must measure it some day). I hang it in some trees
when camping. Loads up on all bands 160 to 6 metres, and seems to
radiate quite well if I can get the wires up flat and high.

I tried using the FC40 with a vertical, pretty poor performer compared
to the screwdriver I use now while mobile (Codan 9350).

73,
Peter
VK4TGV



--- In YaesuTuner@..., "colin" <kinggreene2003@...> wrote:

well i have got a Ft-40 that came with the bundle of radio's that i
got a short while ago, i am wondering weather i could feed a "off
center dipole" with some 300 ohm feeder, something like a 33/66Ft

ratio?

i know it says dont use coax but if i just connect a wire i am limited
to about a 20 Ft vertical. any ideas?
colin KB3PNE