My friends, you may download any chapters whatever you want! Please, for copyright watch Cover + Contents!

ANTENTOP- 01-2008

 

 

 

 

Custom Search

 

Cover +Contents

Download!

390 KB

(Cover + Editoroal + Cotenst (pp.:1- 4 )

 

 

Antenna Theory

 

Pages
1

Polarization and Related Antenna Parameters : by: Prof. Natalia K. Nikolova

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 to chose for ANTENTOP.
Now I want to present to you one more very interesting Lecture - it is a Lecture Radiation from Infinitesimal (Elementary) Sources. I believe, you cannot find such info anywhere for free! Very interesting and very useful info for every ham, for every radio- engineer.

Radiation from an infinitesimal dipole. Duality in Maxwell's equations.
Radiation from an infinitesimal loop. Radiation zones.


5-21
 

More....

 
   
 

Receiving Antennas

 

2

 

Atmospheric Current: Practical Experiments: By V. T. Polaykov, RA3AAE, Ph. D in technical science

The Article describes some experimenters that prove the mysterious current from the Broom Antenna

 

22- 25
 

More....

 
 
 
 

HF- Antenna Practice

 

 
3

Expedition Two Element Antenna for the 20-meter Band: By N. Filenko, UA9XBI

The antenna was designed for using at DX- peditions. Antenna consists of two elements- mast in height 10 meters and in diameter 30-50-mm (it is reflector) and a dipole for the 20-m (it is driver).

 

26- 28
 

More....

 
   
   
4

Simple All- Band HF- Antenna: By Eugene Erohov (US4EM)

Dream of each of amateurs working from a hard for antenna installation conditions to have a small invisible antenna for all bands. I have tried to solve the dream. My all band antenna is something middle between T2FD and loaded Loop.

 

29
  More....  
   
 

 
5

Rectangular UB5UG: By Yuri Medinets, UB5UG, Kiev

Rectangular shown at Figure 1 has good parameters and not so sensitive to height (that is very important for low amateurs HF-ranges) compare with dipole. Upper horizon wire is broken by a nut insulator at it's center. Due to a small height the antenna is suitable for 80- and 40-meters Band.

30- 32
  More....
 
 
 

 
6

 

Delta Loop UN7CI for 7, 10, 14 and 21- MHz: By Boris Popov (UN7CI), Petropavlovsk, Kazakhstan

The antenna was designed to work from a field conditions at amateur's bands 7, 10, 14 and 21-MHz. The antenna has SWR less the 2.0:1.0 at height of the
lower side 1.2 meters above the ground. Antenna has good efficiency.

 

33- 34
  More....  
   
 

 

7

 

Vertical UN7CI for 7, 14 and 21- MHz: By Boris Popov (UN7CI), Petropavlovsk, Kazakhstan

The antenna was designed for amateur's bands' 7, 14 and 21-MHz. Antenna fed throw 50-Ohm coax. The antenna has SWR less the 1.5:1.0 at any band. Antenna has good efficiency and low angle of radiation at vertical plane (that is good for DX-ing). Only one power relay is used to switch a working band.

35-36

 

  More....  
   
 

 
8

 

Delta for 80 and 40- meters: By Valentin, RZ3DK


The Delta for 80 and 40 meters was designed for installation on the roof of a building with help of a metal mast. Matching of the antenna at both bands is possible with the help of the length of 75-Ohm Coaxial in 4.82-meters.

 

37- 41
  More....  
   
 

 
 

VHF- Antenna Practice

 
9

Two Elements YAGI for 145 MHz: Balcony Project: By Aleksandr, RZ3AIX

Well, why I did a Two- Elements YAGI? Why not Three, Four or more Elements YAGI? Or, say, so popular 2-5/8 or 3-5/8 Vertical Collinear Antenna?

42- 44
  More....T  
   
 

 
10

Simple Weekend Antenna for 145-MHz: By Igor Lavroushov UA6HJQ

Yes, I need an antenna for 144-MHz. Not just antenna, but antenna that can work in different conditions, from my home, from a car, from my mountain trip. Have been tried different design I suddenly stopped to those one. It is two elements YAGI that is very simple to design but has good characteristics.


 

 

46- 48
  More....T
 
 

11

 

Fixture for Fast Assembling of VHF- Antennas: By Il'ya Yarushkin, UA9UKO

The Fixture is intended for fast assembly and disassembly of VHF antennas. It is very useful for experimenters with the antennas or assembling of portable VHF- antennas.

O

 

 

49- 50

 

 

More....T

 
   
 

 
 

 

12

AN

Water Pipe T-Joint at VHF Antennas: By N. Filenko, UA9XBI

By the way, I was (and may be am) not an experienced VHF- man before I decided to do my VHF YAGI. I had serous doubt that I spoiled lots stuff while I made my YAGI. So I found for solution how to do the antenna without turning in garbage my antenna's material.

OP

51- 53
  More....T  
 
 
 

P.A.

13

Matching a Transceiver with PA on several GU50: By N. Filenko, UA9XBI


Matching input of PA that contained several tubes GU50 with a transceiver is not a simple matter as it seems at first look. Sometimes for simplicity of the
design PA the driver power from a transceiver going straight away to several connected to bridge cathodes of the GU50.

 

45

 

  More....  
   
 

 
14

2xGU50 and 3xGU50 PA from UA1TAT: By Yaroslav Zhukov, UA1TAT


Two simple schematic PA made on Russian popular tubes GU50.

54- 56
  More....  
   
 

 
15

PA 3xGU50. Photos of the Design: By N. Kisel, UA3AIC

Photos show how to do a simple PA 3xGU50.

 

57- 60
  More....  
   
 

 

16

 

PA 2xGU50. Photos of the Design: By N. Kisel, UA3AIC

Photos show how to do a simple PA 2xGU50.

61

 

 

More....

 
   
 

 
17

 

PA 5xGU50. Photos of the Design: By N. Kisel, UA3AIC

Photos show how to do a simple PA 5xGU50.

62
  More....  
   
 

 

18

 

Simple Broadband P.A.: By Igor Grigorov, UA3ZNW

The P.A. is very simple. It is usual push- pull with some tricks which allows to make the P.A. in easy style.

 

63- 68

 

  More....  
   
 

 

 

 

19

 

 

Matching Circuit for Tube PA: By Sergey Lebedev, UA0UG

As usual, at a Vacuum Tube PA an output tube is matched with antenna with help of a p-circuit. It is refer to use switching inductors or variometer. This matching circuit can work from 3- 30-MHz without switching inductors. The circuit is widely known among radio amateurs of 9-0 amateurs region of Russia.

 

 

69

 

  More....  
   
 

 
 

Free E- Books

 
20

QRP Transceivers and PAs from Accessible Part.: By Igor Grigorov, UA3ZNW
(*pdf), 38 pages.


Book in English "QRP Transceivers and PAs from Accessible Parts " (*pdf), 38 pages is a translation of Russian Book "QRP Transceivers and PAs from Accessible Parts " (*pdf), 28 pages. Russian version was published by me (on my own expenses) in 1991, in Belgorod, Russia. I had printed 2000 samples of the book.
Of course, it was not best paper used for the book as well as not good quality of printing. The book describes kits which my own company ("Vibrissa") produced at the times. Naturally, the book was the manual for the kits. Were produced 400 kits of TST (Tube- Semi- conductor- Transceiver) near 50 of them were assembled by me for customers, 200 kits SQT (Semi- conductor- Quartz- Transceiver), near 30 were of them were assembled by me for customers, 200 kits of PA, near 60 were of them were assembled by me for customers. Of course, the book will be interesting for all amateurs, not only for QRP- funs

70
  More....  
   
 

 
21

 

CQ- QRP- 03


U- QRP- C was alive only 9 years, from 1986 to 1995. At the times the club had managed lots deals. At first were united QRPers from all former USSR. It was the base for recently QRP Clubs of the former USSR- for RU- QRP- C and for UR- QRP-C. At second, a new amateur code "72" was accepted in the ham World due to efforts of Oleg Borodin, former president of the U- QRP-C. At third, 3 nice QRP- magazines were printed out. One of the magazines, CQ- QRP # 3 is pasted to AntenTop Library. The magazine is in Russian, but the schematics are international understandable.


71
  More....  
   
 

 
22

CQ- QRP- 02

U- QRP- C was alive only 9 years, from 1986 to 1995. At the times the club had managed lots deals. At first were united QRPers from all former USSR. It was the base for recently QRP Clubs of the former USSR- for RU- QRP- C and for UR- QRP-C. At second, a new amateur code "72" was accepted in the ham World due to efforts of Oleg Borodin, former president of the U- QRP-C. At third, 3 nice QRP- magazines was printed out. One of the magazines, CQ- QRP # 2 is pasted to AntenTop Library. The magazine is in Russian, but the schematics are international understandable.

72
  More....  
   
 

 

 

 

 

23

 

Book "Radio Antenna Engineering" by Edmund A Laport,
Chief Engineer, RCA International Division, Radio Corporation of America, Fellow, Institute of Radio Engineers 1952
--- Scanned and Prepared by Dave Platt AE6EO---


About the book comment by Dave Platt AE6EO: "Radio Antenna Engineering is certainly of significant historical interest, and may be of practical use as well. Although some of the designs and practices portrayed in it have been supplanted in commercial service, much of its content can still be of significant value to amateur-radio operators and to those interested in the practical aspects of high-power radio operation in the lower-frequency RF bands..."
Just brief description, photos and schematic diagram.

 

 

73-75

 

 

More....

 
   
 

 
 

 

Keys

 

24

 

 

CW Key That Never Have Been Smallest: By Igor Lavroushov UA6HJQ

This micro key newer will be heavy for any mountain radio-expedition. It is possible to use the key as backup or ever as main key of the amateur radio. This key may be used at tuning antennas with hand- control tuner (for example like MFJ- 902). For example the key may be used for tuning ATAS- 25 with YAESU FT8x7 (FT817, FT 857, FT897). Okey, go ahead to make it!


76- 77

 

  More....  
   
 

 
25

Simple "PIC- KEY": By Mike Kislinsky, RX9CBI

This simple "PIC- KEY" provides sending Morse Code in two modes. First, that was written in the memory (four memory cluster), second, with hand jambic manipulator.


78- 79
  More....  
   
 

 
 

QRP Transceivers

 
26

Transceiver SQT: By Igor Grigorov, UA3ZNW

Transceiver SQT (Semiconductor Quartz Transceiver) firstly was described at book "QRP Transceivers and PAs from Accessible Parts." The book (in Russian) is at Antentop Free Library. The article is English translation of the Russian one. Shortly about SQT:
DC CW Transceiver, X- tall VFO, VFO range up to 20 kHz (depenfs on used crystal), 50-Ohms Antenna, head-phone RX with sensetivity near 1- micro-Volt, Power Supply is 12-V, RF out is near 1-Wtts, any HF- amateur band or 2-3 amateur band (options, depends on used crystal), made on transistors.


 

80- 93
  More....  
   
 

 
 

Useful Data

 
27

Logos of ex- USSR Electronics Factories

The table shows Logos of Electronics Factories used in ex-USSR. Some of the Logos are used up to our days

94-100
  More....  
   
 

 

 

 

 
 
 

 

 

Last update: March 29, 2016 8:44