If you'll check my message, I said what we buy today and use today is 
not the original design.  Today's design used with coax works with 
todays radios with builtin tuners.  I know full well what the original 
was, I've read articles, what I'm talking about is the antenna most of 
build or buy today.  One commercial one I bought and used for many years 
used a current balon at the point where the ladder line hooked to the 
coax.  They suggested at least fifty feet of coax and I used this thing 
at college with great success.  Although it differs from the original, 
we unfortunately still call this antenn a g5rv.
73
Butch
WA0VJR
Node 3148
Wallace, ks.


On Tue, 14 Aug 2012, David 
W Wood (G3YXX) wrote:

> Wrong wrong wrong
>
> When Lou designed the G5RV coaxial cable wasn't available to the =
> amateur.
> His system was designed to work on the then six major ham bands, in =
> conjunction with a particular LC network for tuning.
> The introduction of coax at a later stage introduced a level of =
> imbalance.
> He came to our local radio club some years ago where he went through the =
> design process and practical implementation of his design.
>
>
> David W Wood
>
> Ham call - G3YXX
> FOC # - 1685
> Licensed - 1969
> =20
> -----Original Message-----
> From: For blind ham radio operators =
> [mailto:[log in to unmask]] On Behalf Of Butch Bussen
> Sent: Tuesday, August 14, 2012 1:27 PM
> To: [log in to unmask]
> Subject: Re: G5RV and RFI/TVI?
>
> Not necessarily true.  Strictly speaking, a half wave dipole is a=20
> ballanced antenna.  Although somewhat a different design than the=20
> original g5rv, those you buy today use the ballanced line as a sort of=20
> tuning stub, and most state you should run at least 50 feet of 50 ohm=20
> coax to the radio.  I ran one like that for years and it worked great.=20
> I also once ran a double sized one that worked fine on 160  Antenna=20
> lengths were doubled as well as the tuning stub.
> 73
> Butch
> WA0VJR
> Node 3148
> Wallace, ks.
>
>
> On Tue, 14 Aug 2012,=20
> David W Wood (G3YXX) wrote:
>
>> The G5RV is a balanced antenna, hence coax really shouldn't be part of =
> =3D
>> the system.  Probably high currents on the braid of the coax.
>>
>> 73
>>
>> David W Wood
>>
>> Ham call - G3YXX
>> FOC # - 1685
>> Licensed - 1969
>> =3D20
>> -----Original Message-----
>> From: For blind ham radio operators =3D
>> [mailto:[log in to unmask]] On Behalf Of Tom Brennan
>> Sent: Tuesday, August 14, 2012 3:00 AM
>> To: [log in to unmask]
>> Subject: Re: G5RV and RFI/TVI?
>>
>> Tom, I've never had any rfi/tvi with my G5RV even in very close =3D
>> quarters.
>> However, you need to make sure all connections are good and have a =
> good =3D
>> rf
>> ground on your rig.  Also, I've fround less problem using a coax G5RV =
> =3D
>> rather
>> than a plain wire one.
>>
>> Tom
>>
>>
>> Tom Brennan  KD5VIJ, CCC-A/SLP
>> web page http://titan.sfasu.edu/~g_brennantg/sonicpage.html
>>
>> --
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>
>