Justin Johnson - G0KSC (@g0ksc) 's Twitter Profile
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

linkhttp://www.g0ksc.co.uk calendar_today04-09-2009 12:05:43

9,9K Tweet

2,2K Followers

567 Following

Justin Johnson - G0KSC (@g0ksc) 's Twitter Profile Photo

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. #logperiodic #logp #antennas #hamradio #hamr #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. #logperiodic #logp #antennas #hamradio #hamr #AmateurRadio
Justin Johnson - G0KSC (@g0ksc) 's Twitter Profile Photo

Ideally X-pol Yagis will have a non-metallic cross-boom and coax will exit the rear of the antennas #hamradio #hamr #antennas #AmateurRadio

Ideally X-pol Yagis will have a non-metallic cross-boom and coax will exit the rear of the antennas #hamradio #hamr #antennas #AmateurRadio
Justin Johnson - G0KSC (@g0ksc) 's Twitter Profile Photo

Using a rear splitter mounting bar (particularly on 70cms) ensures all cables remain short and thus losses reduce. g0ksc.co.uk #hamr #hamradio #antennas #amatuerradio #70cms #eme

Using a rear splitter mounting bar (particularly on 70cms) ensures all cables remain short and thus losses reduce. g0ksc.co.uk #hamr #hamradio #antennas #amatuerradio #70cms #eme
Justin Johnson - G0KSC (@g0ksc) 's Twitter Profile Photo

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 #hamradio #antennas #antennadesign #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 #hamradio #antennas #antennadesign #amateurradio
Justin Johnson - G0KSC (@g0ksc) 's Twitter Profile Photo

Something new to come? A new, lighter and improved 5el 50MHz Low Noise LFA Yagi - The LFA-4. 4.3m boom . No matching device so no matching losses. closed loop feed with DC ground means a quieter antenna with RX protection and Band Pass Filter (BPF) characteristics #hamr

Something new to come? A new, lighter and improved 5el 50MHz Low Noise LFA Yagi - The LFA-4. 4.3m boom . No matching device so no matching losses. closed loop feed with DC ground means a quieter antenna with RX protection and Band Pass Filter (BPF) characteristics #hamr
Justin Johnson - G0KSC (@g0ksc) 's Twitter Profile Photo

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 #hamradio #hamr #antennas #AmateurRadio

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 #hamradio #hamr #antennas #AmateurRadio
Justin Johnson - G0KSC (@g0ksc) 's Twitter Profile Photo

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 #hamradio #antennas #antennadesign

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 #hamradio #antennas #antennadesign
Justin Johnson - G0KSC (@g0ksc) 's Twitter Profile Photo

Made the mistake of moving to Lyca Mobile. Roaming does not work, authentication requests refused. Lyca has only basic level support. Below is an example of what happens when you have done all their basic checks and it still does not work. #OFCOM #lyca #lycamobile

Made the mistake of moving to Lyca Mobile. Roaming does not work, authentication requests refused. Lyca has only basic level support. Below is an example of what happens when you have done all their basic checks and it still does not work. #OFCOM #lyca #lycamobile
Justin Johnson - G0KSC (@g0ksc) 's Twitter Profile Photo

23:38 and no information from easyJet easyJet holidays about the flight that should have left at 18:45. Young families with babies young as 6 months with checked luggage they have no access to with baby food - incredible poor performance 23:40 14/10/2024

23:38 and no information from <a href="/easyJet/">easyJet</a> <a href="/easyJetholidays/">easyJet holidays</a> about the flight that should have left at 18:45. Young families with babies young as 6 months with checked luggage they have no access to with  baby food - incredible poor performance 23:40 14/10/2024