For the sake of discussion, I have always referred to the G5RV antennas
that used a different feedline configuration from the original design as a
"Modified G5RV." So, everyone here is correct, but it is true that the
original G5RV did not use coax the way it is being described here, as you
have acknowledged, thus, it is more accurately referred to as the "Modified
G5RV."
Ron, AC4HM
At 08:32 AM 8/14/2012 -0500, you wrote:
>Hi all,
>
>I have a G 5 R v here that I purchased from W 8 A M Z up there in Michigan.
>The vertical window line is 450 ohm and requires at least 70 feet of 50-52
>ohm coax between the window line and the radio in order to work properly.
>No baluns are required.
>
>The G 5 R V's of today are a bit different to work with today's radios as
>Butch stated.
>
>73
>
>Howard #3
>
>
>----- Original Message -----
>From: "Butch Bussen" <[log in to unmask]>
>To: <[log in to unmask]>
>Sent: Tuesday, August 14, 2012 8:20 AM
>Subject: Re: G5RV and RFI/TVI?
>
>
>> 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
>>>>
>>>> --
>>>> I am using the free version of SPAMfighter.
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>>>>
>>>
>>>
>
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