antentopSince2 July

Ham Spirit
Antentop Free E-Magazine
Free Choice

 

 

Free Antentop Amateur Open Book
Antentop Album
Antentop Survey

 

 

 

Antentop is FREE e-magazine devoted to Antennas and Amateur Radio an

Special page devoted to

UR5WCA Balcony Antenna for 7, 10 and 14

Custom Search

 

ANTENTOP- 01- 2007, # 009

UR5WCA Balcony Antenna for 7, 10 and 14

 

 

The measurement was made at distance 5 meter far the antenna.  At antenna clips an ATU (see References 1) was used with the antenna. ATU (between coax and transceiver) is a must for the antenna.

 

After numbers tests I did another modification.

 

1. Each vertical contains 20.2 meters of insulated copper wire in 1.5-mm (15- AWG) diameter.

 

2.       The coils (see Figure 4) were deleted and verticals were connected straight away to pre ATU (see Figure 5).

 

3.           A counterpoise (I used metal balcony hand-rail) was used with the antenna.

 After this modification noise level decreased, SWR was not changed. ATU (between coax and transceiver) is a must for the antenna. With the antenna I did some DX QSOs, for example,  with KH0DQ (10-MHz, 589 to me) and 5Z4LS (14-MHz, 599 to me).

 

Conclusion: Of course, it is only a surrogate antenna, but the antenna is worked, and works not bad.

 

References:

 

1.     http://www.qsl.net/gw6hmj/antenna.htm

 

 

 

Figure 4 Modification of the UR5WCA Balcony Antenna

 

 

Figure 5 ATU of the UR5WCA Balcony Antenna

 

 

 

 

 

 

http://www.antentop.org/

Page 29

 

27 28 29

 

 

QRP Transceivers and PA from Accessible Parts IP for QRP Antentop Book Radio Antenna Engineering Book Antentop Printed and e- magazines
 


 

 

Just for Fun:

Map IP Address
Powered byIP2Location.com

Thanks for your time!

Last Updated:

August 2, 2016 23:26

Antentop Home Page

Free Antentop Open Book