[ICOM] G5RV Dipole

[joel hallas]

Tony,

I sucessfully use a G5RV on almost all bands (not too good on 30 M), 
along with other antennas. If you are using a full-sized G5RV (102' 
flat-top), I believe you are giving up a lot if you tie the leads 
together. I haven't used an AH-4, but have used a similar (I guess) SGC 
SG-230 with the center conductor of the coax on the antenna terminal and 
the coax shield on the tuner ground post. It may work even better, 
especially on the higher bands, if you have enough coax to make a coil 
of half a dozen turns 6 " in diam right before the coax connects to the 
tuner to limit current on the outside of the coax.

Nothing wrong with hooking the leads together, but you end up with a 
"capacitance hat on a vertical" and the antenna is the outside of the 
coax (in my house running through the basement) and the open wire line. 
If you have high conductivity ground around your house (swamp, ocean, 
etc.) and a good ground connection, and a short run to get outside, it 
may work well. At my house feeding the coax as I describe works much , 
much better.

73 and GL, Joel
Joel R. Hallas, W1ZR

Tony Lord wrote:

>Hi all,
> 
>On 80m the only antenna I have is a G5RV dipole, rig is an IC756 Pro II. The
>antenna will not load up directly. I also have an AH-9  auto antenna tuner.
>On the G5RV dipole the open wire feeder terminates to an in line SL259
>socket, here I connect some co-ax and at the AH-9 I twist the centre and
>core of the co-ax together and feed the AH-9 directly. Is the right thing to
>do?? Or would I be better off connecting one side of the dipole to the
>antenna terminal of the AH-4 and the other side to earth??
> 
>Would appreciate any comments and advice…………
> 
>73’s de Tony G8DQZ
> 
> 
>
>
>----
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