http://elecraft.85.s1.nabble.com/Subject-The-G5RV-trivia-tp7659132p7659147.html
I just looked in some of my old ARRL Handbooks. The earliest I find the chart described as “Practical arrangement of a shortened antenna” is in the 1948 edition of the handbook. The 1944 edition has a very similar chart talking about multi band antennas but the description is somewhat different.
> On 23 Mar 2020, at 21:53, Bob McGraw K4TAX <
[hidden email]> wrote:
>
> The same antenna, although not named the G5RV, is described in the 1956 ARRL Handbook, Chapter 14, page 343. Fig 14-19 "Practical arrangement of a shortened antenna." It may have been described in an earlier publication, however the 1956 Handbook is the earliest I have for reference.
>
> The description shows "A" as the length of 1/2 of a dipole where "2A" is the dipole total length and with the total length being less than 1/2 wavelength as shown in table 14-1. The open wire feed line "B" is then 1/2 of "A". Therefore A + A + B + B becomes the length of the standard 1/2 wave antenna. When the length of A + A is is greater than a 1/4 wavelength the effectiveness of the antenna is not changed.
>
> Table 14-1 shows the length of the antenna to be 135 ft with a feeder length of 42 ft. covering 3.5 - 28 MHz which uses parallel feed for 3.5 - 21 MHz and series feed for 28 MHz. A shortened version shows the antenna length to be 67 ft with 42.5 ft feedline. In this case 3.5 MHz is series fed and 7 - 28 MHz is parallel fed.
>
> Regarding connecting a balanced feed line to the transmitter, Fig 14-21 (B) reference is made to do so using a pair of "balun" coils. This would imply a proper balun would contain two separate coils existing on two separate cores. The discussions by W8JI and DJ0IP would imply a single core will not be the correct design although it may contain 4 windings existing on a signal core. The original Heathkit balun, being two separate air wound dual winding coils would satisfy the requirement.
>
> Yes, more interesting trivia.
>
> 73
>
> Bob, K4TAX
>
>
> On 3/23/2020 8:18 PM, Jan wrote:
>> I first learned of the G5RV Antenna back in early 1963 in Malaya ~ as the Editor for the *M*alayan *A*mateur *R*adio *T*ransmitter *S*ociety's /NewsLetter/ . Jim, 9M2DQ (a rubber estate manager) sent me a copy of Mr. Varney's article; a simple wire antenna that covered 80-40-20-15-10 Meters.
>>
>> It became a popular antenna in South-East Asia ~ with many using it for chatting on 14.320 MHz ~ which became the SEA-NET in 1963 and beyond. I have fond memories of using it at 9M2JJ for two and a half years at the Secondary Trade School; where I taught as a Peace Corps Volunteer.
>>
>> Cheers, Jan K1ND
>>
>>
>>
>>
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