when I looked for more information about my antenna (base coil loaded half sloper) I found interesting antenna also for restricted space.
In fact the vertical part is helical vertical where 11.7m of insulated 2.5mmsq wire is wounded on the 5m of the fiber glass pole including the wire going to point A for feed line. The spacing for the winding is approx. 1.5cm.
The 2x 18.1m of the insulated wire used for radials on the ground is compromised solution for that installation. Definitely it's needed better grounding system and 16x 16m is recommended as minimum where 3dB loss is expected.
Well I did not tested it but for those who are space limited it can be inspiration for experiments.
Do not hesitate to share with us Your experiences with compromised antennas like this.
73 - Petr, OK1RP
Top band DXing is real ham radio challenge. 160m is also referred as the "Gentleman's band". No cheating over here, respect lads, respect! 160 meters - DXing on the Edge...
Welcome to new 160m band blog
This blog is the replacement of the my preview Topband blog here http://topband.blog.cz/ because of an agressive advertising and flash banners inserted by the blog provider. For older posts access You can visit the old blog link which will exist still... but it will not be updated anymore.
Effective from 1st Jan 2017 please paper QSL via OM-bureau only.
Friday, November 29, 2013
Inverted L for restricted space...
Posted by Petr, OK1RP at 8:02 AM
Subscribe to: Post Comments (Atom)
Post a Comment