The first attempt
During
august-september 2002 I built my E-H antenna for 20m band, as shown at Pic_1 [
1 ].
The antenna is built on a 50mm
diameter polypropilene Pipe. The length of cylinder is 160mm. The material for
cylinders are the tin cans for condensed milk. The coil consist of 14 turns
1.2mm copper wire on 30mm length. There is some distance between the turns,
that’s good for tuning the coil for a band. The 2 turns link 2.0mm copper wire
is below the main coil. The antenna replaced 3 meter above the roof of 9-storeys building. I use the 75 Ohm cable as
a coupling line, home made transceiver and PA with parameters : U0 = 1200V, I0
= 0.5A.
The List_1
is extract of my log with comparison of two antennas : E-H and GP. It will be
interesting for you, I think.
The List 1.
|
D A T E |
T I
ME U T |
C A L L |
R S
T E-H |
R S T
GP |
REMARKS |
|
10
SEP.2002 |
09:40 |
RK4CL |
5 9 |
5 9 + 8 |
|
|
10
SEP.2002 |
09:45 |
RA1NE |
5 9 |
5 9 |
|
|
12
SEP.2002 |
10:40 |
RK4HWW |
5 9 |
5 9 + 8 |
|
|
12
SEP.2002 |
10:51 |
RA9LL |
5 6 |
5 7 |
|
|
12
SEP.2002 |
14:05 |
N5RG |
549 |
579 |
LONG PATH |
|
12
SEP.2002 |
14:28 |
K6VX |
559 |
559 |
LONG PATH |
|
12
SEP.2002 |
14:37 |
W6EUF |
559 |
559 |
LONG PATH |
|
12
SEP.2002 |
14:42 |
K7SS |
559 |
569 |
LONG PATH |
|
13
SEP.2002 |
06:44 |
S5/ON4CDX |
59 |
58 |
|
|
13
SEP.2002 |
07:18 |
ZG2FX |
57 |
58 |
|
|
13
SEP.2002 |
07:33 |
DL3SEZ/P
|
57/58 |
58 |
|
Many thanks for the info on the web-site. Best regards.
My address
: p.o.box 1669, Kryvy Rig, 50038, Ukraine. E-mail : [email protected]. See, also, qrz.com.
My
QTH-locator is KN67rw.
Olexander
Senchurov, UT4EK, UCC#71, UDXC#397.
Sources: