Justin Johnson - G0KSC
@G0KSC
Ham Antenna Designer - Inventor of the LFA Yagi - ARRL Antenna Book contributor - Over 50’s bodybuilder and fitness fan
ID:71518717
http://www.g0ksc.co.uk 04-09-2009 12:05:43
9,7K Tweets
2,1K Followers
587 Following
A nice little 50el 70MHz OWL. Scans from AN-SOF and the analyser show just how close prediction gets these days. g0ksc.co.uk #innovantennas #hamr #hamr adio #antennas #antennadesign
This little LFA-R (driven element and director) is just 50cms long and yet has stunning performance all be it a little narrow. Ideal for digi modes on the 8m band #40mhz #hamr adio #hamr #antennas #AmateurRadio
3 el 70MHz slot. Only 42cms between reflectors and the loop and loop is 1.43m high. Gain is an impressive 8.2dBi and over 20dB F/B #70mhz #hamr #hamr adio #antennas #antennadesign #amateurradio
Ideally X-pol Yagis will have a non-metallic cross-boom and coax will exit the rear of the antennas #hamr adio #hamr #antennas #AmateurRadio
This antenna was the starting point of my HF BOLPA Log Periodic range. square booms as the feed lines with half element sections altering between top and bottom boom to adjust phase. #logp eriodic #logp #antennas #hamr adio #hamr #AmateurRadio