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Table of Contents Antentop 01- 2016 (020)
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ANTENTOP- 01- 2016, # 020

Table of Contents

 

 

 

Table of Contents

 

 

 

Page

 

 

Cover +Contents

 

1- 4

 

Antenna Theory

 

 

 

 

 

 

1

PLANAR ARRAYS, CIRCULAR ARRAYS

Prof. Natalia K. Nikolov

 

Dear friends, I would like to give to you an interesting and reliable antenna theory. Hours searching in the web gave me lots theoretical information about antennas. Really, at first I did not know what information chose for ANTENTOP.

 

Now I want to present to you one more very interesting Lecture - it is LECTURE 18: PLANAR ARRAYS, CIRCULAR ARRAYS. Planar arrays are more versatile; they provide more symmetrical patterns with lower side lobes, much higher directivity (narrow main beam). They can be used to scan the main beam toward any point in space……

 

 

 

 

 

5- 18

 

 

HF- Antenna Practice

 

 

 

 

 

2

RX3MS Helical Antennas

Vladimir Turkin, RX3MS

 

Below there are described three Helical Antennas. All of the antennas were made and tested by RX3MS. The antennas later were repeated at several amateur's stations and the antennas showed good efficiency........

 

 

 

19- 22

 

 

 

 

 

3

 

Modified Beverage Antenna

Igor Grigorov, VA3ZNW

 

I took the decision. At last! I took the decision to participate in CQ- WW- 160- Meter Contest. My setup for the Contest was IC- 718 and Beverage Antenna described at Antentop- 01, 2015. The antenna had termination resistor 450- Ohm/25-Wtt. It allowed me run the IC-718 on 50-Wtt without damage to Beverage's termination load. So I decided participate in the Contest as a Low Power (up to 150-Wtt) Single Operator...

 

 

 

 

23- 29

 

 

 

 

4

Attic Antenna for 40-, 30-, 20-, 17-, 15-, 12 and 10 meter Band

Eugene Viktorovich

 

The antenna was installed in the attic. Antenna was matched with help an Automatic ATU in 40-, 30-, 20-, 17-, 15-, 12 and 10 meter amateur Bands. The Antenna worked satisfactory on the above mentioned bands........

 

 

30

 

 

 

 

5

Simple Magnetic Loop Antenna for a Journey

Alexander Eryomin, R2DHF

 

The Magnetic Loop Antenna is designed especially for working from journey. The Antenna is ready for operation from disassembled to assembled condition in several minutes. Antenna contains cheap or not hard to find stuff. I spend less $ 50.0 for kit for the antenna. ......

 

 

 

 

31- 32

 

 

 

 

6

Beverage Antenna. Theoretical Look on Practical Result

Igor Grigorov, VA3ZNW

 

My Beverage Antenna (that was described at: http://www.antentop.org/019/va3znw_019.htm. The antenna was successfully tested at CQ WW 160- Meter Contest (CW), CQ WPX (2016, CW) and ARRL International CW Contest (2016). I worked there with my IC- 718 using only 50… 90- Wt.

 

However it stands interesting for me what is the theoretical data for my Beverage Antenna. .....

 

 

 

33- 45

 

 

 

 

7

 

 

UA6AGW Antenna V. 20-10.51 (14.0- 29.5- MHz)

Aleksandr Grachev, UA6AGW

 

UA6AGW Antenna V. 20-10.51 can work in frequency range from 14.0 to 29.5 MHz that is covered 20. 17, 15, 12 and 10- meter amateur Bands. This is provided by tuning the antenna in resonance to the used band with help of a remote- control variable capacitor installed at the antenna. UA6AGW Antenna V. 20-10.51 is designed for easy and quick installation in the field....

 

 

 

46- 49

 

 

 

 

 

 

8

 

Three Element YAGI Antenna for the 20- meter Band

Nikolay Kudryavchenko, UR0GT

 

Below described three elements YAGI for the 20- meter Band. Model of the YAGI was simulated by UR0GT. The antenna has very high gain- almost 14.4- dB at central frequency 14.15- MHz. Antenna covers all 20- meter band with SWR 2.5: 1.0 at the edges …

 

 

50- 51

 

 

 

9

 

 

 

Compact Antenna for 160- meter Band for the DX- Window

Nikolay Kudryavchenko, UR0GT

 

Below described Compact Antenna for 160- meter Band for the DX- Window. Model of the antenna made by UR0GT. Antenna has "compact" sizes related to the 160- meter band. However with the dimensions the antenna has good parameters at the DX- Window at the 160- meter Band.....

 

 

 

52- 53

 

 

 

10

 

Low Height Narrow Delta Antenna for the 80, 40, 20 and 15- meter Band

Nikolay Kudryavchenko, UR0GT

Below described Low Height Narrow Delta Antenna for the 80, 40, 20 and 15- meter Band. The Antenna was simulated by UR0GT for DE7RAO, for his defined conditions of possibility for antenna placement. However the antenna design should be interesting for those amateur who has tied conditions for antenna installation or for amateurs who participated in field day. ....

 

 

 

 

54

 

 

 

 

11

 

Simple HF Antenna for the 20-, 17-, 15-, 12- and 10- meter Band

Andrey Korsakov, RA4NF

 

Below described a very simple HF Antenna for the 20-, 17-, 15-, 12- and 10- meter Band. Antenna is fed by 50- Ohm coaxial cable. Antenna has very simple design and does not require any tuning if it made according the drawing....

 

 

 

55

 

 

VHF ANTENNAS

 

 

 

 

 

12

 

Simple Vertical Antenna for the 6- and 2- meter Band

Igor Vakhreev, RW4HFN

Below described simple dual band vertical antenna for the 6- and 2- meter Band. Model of the antenna was simulated by RW4HFN. Antenna may be made from a rigid copper/aluminum wire. Antenna does not require any tuning elements. Antenna made according to the description already should work at the two bands.....

 

 

 

 

56- 58

 

 

 

 

 

13

 

 

Stub Vertical Antenna for the 6- and 2- meter Band

Igor Vakhreev, RW4HFN

 

Below described simple dual band vertical antenna for the 6- and 2- meter Band. Model of the antenna was simulated by RW4HFN. Antenna may be made from a rigid copper/aluminum wire. Antenna does not require any tuning elements. Antenna made according to the description already should work at the two bands....

 

 

 

59- 61

 

 

 

 

 

14

 

Dual Cross Vertical Antenna for the 6- and 2- meter Band

Igor Vakhreev, RW4HFN

Below described simple dual band vertical antenna for the 6- and 2- meter Band. Model of the antenna was simulated by RW4HFN. Antenna may be made from a rigid copper/aluminum wire. Antenna does not require any tuning elements. Antenna made according to the description already should work at the two bands....

 

 

 

 

62-64

 

 

 

 

 

15

 

 

Simple Three Element Vertical Antenna for the 2- meter Band

Igor Vakhreev, RW4HFN

 

Below described simple three elements vertical YAGI for the 2- meter Band. Model of the YAGI was simulated by RW4HFN. The antenna is very simple to make and tune. Antenna may be made from a rigid copper/aluminum wire....

 

 

 

65- 66

 

 

UHF ANTENNAS

 

 

 

 

 

 

16

 

Short Five Elements Antenna for the 70- cm Band

Yuriy Skutelis, RN3DEK

 

Short Five Elements Antenna (length 50- cm) made of aluminum rod (or tube) in diameter 5- mm. Antenna designed for repeater sub- band. Antenna has gain near 7.4- dBd at 439.0- MHz. F/B at the frequency is 35.9 dB....

 

 

 

67-68

 

 

 

 

 

 

17

 

Broadband Five Elements Antenna for the 70- cm Band

Yuriy Skutelis, RN3DEK

 

 

Broadband Five Elements Antenna (length 50- cm) designed on the base of Short Five Elements Antenna for the 70- cm Band (Antentop 01- 2016). The antenna has low SWR at the upper edge of the 70- cm Band. Antenna made of aluminum rod (or tube) in diameter 3- mm. Antenna has gain near 7.2- dBd at 439.0- MHz. F/B at the frequency is 35.3 dB.....

 

69- 70

 

 

 

Propagation

 

 

 

 

 

18

 

Black Holes in the Air

Igor Grigorov, VA3ZNW

 

Article about Black Holes in the Air was published in Antentop Magazine http://www.antentop.org/black_holes.htm. As I mentioned there I did not observe Black Holes in the Air. At those times I say no. Time lasts.…It happened in March- 2013 ...

 

 

71

 

 

Tube DC Receivers

 

 

 

 

 

 

19

 

Simple Two Tube Direct Conversation Receiver

Aleksandr Viktor

 

 

It is very simple DC receiver contains only two tubes. No one semiconductor there is here. This receiver made by me on the base of Kazuhiro Sunamura 12V- Tube receiver....

 

 

 

72

 

 

 

 

 

20

 

Simple Four Tube DC Receiver for the 80- meter Band

Aleksandr Viktor

 

The receiver was made on the base of my experimenters with simple DC receiver described at previous article (Simple Two Tube Direct Conversation Receiver) and on the base of the receiver Kazuhiro Sunamurà. There were used very old tubes however the receiver worked well with those ones. ....

 

 

 

73- 74

 

 

Regenerative Receivers

 

 

 

 

 

 

21

 

Simple regenerative Receiver BARER 1

DedVova

 

The very simple regenerative receiver was made for 40- meter ham band. The receiver worked very stable. You did not need tune the R10 (Regeneration) through the band once it is already adjusted. The receiver was compared with two commercial ones- TECSUN PL600 and DEGEN- 1103. My regenerative receiver worked much better on the 40- meter band....

 

 

75

 

Experimenters

 

 

 

 

 

 

22

 

Experimenters with Non Snap Ferrite Cylinder Bead RF Chokes

Igor Grigorov, VA3ZNW

 

Recently there are lots devices that contained some RF sensitive or vice versa RF generation parts inside. It is power AC/DC converters (aka power supply), Computers, Computer Monitors, et cetera. Most common way to radiate unwanted interferences or receipt unwanted interferences is cables going apart those above mention parts....

 

 

 

 

76- 81

 

History

 

 

 

 

23

 

Time Machine. QSLs from the Past from E- QSL.

 

I had three call signs when I have been lived in Russia. It is UA3ZNW (1983- 1990), UZ3ZK (1990- 1993) and RK3ZK (1993- 2004). There were made near 30 thousands QSOs, I got several boxes of QSL Cards. However, I managed bring to Canada less the 100 cards from different calls....

 

 

82

 

 

 

 

 

 

24

 

MEMORANDUM ON THE BEVERAGE WAVE ANTENNA FOR RECEPTION OF FREQUENCIES IN THE 550 - 1500 KILOCYCLE BAND: BY Benjamin Wolf and Adolph Andersen

 

There are lots articles on Beverage Antenna. However one of the most important one is "Memorandum on the Beverage Wave Antenna for Reception of Frequencies in the 550 - 1500 Kilocycle Band" by Benjamin Wolf and Adolph Andersen, dated April 1, 1958. On the report there were based lots amateur and science researches on the topic Beverage Antenna......

 

 

 

83- 90

 

 

BOOKs

 

 

 

 

25

 

High- Height Invisible Antennas

 

Light description of the book and link to download....

 

 

91

 

 

 

26

 

Shortened Helical Antennas

 

Light description of the book and link to download....

 

 

92

 

 

 

27

 

Direction Finding Handbook for Wireless Operators : by: W. E. Crook

 

Preface to Second Edition: In preparing the second edition of this work, it was left desirable to extend its scope and cover the interests of the aircraft operator....

 

 

93

 

 

Patents

 

 

 

 

28

 

 

Short Dipole Antenna

 

Just description of the patent.....

 

94- 100

 

 

 


 

 

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Last Updated:

September 4, 2016 12:15

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