Install SPDT (or DPDT) relay in metal box with two SO-239 connectors (3 if you want one for the feedline). The center of the feedline coax goes to the wiper arm of the relay. The NO contact goes to one SO-239 and the NC to the other SO-239. Put a diode reverse-biased across the relay coil. Close up the box. Put two (2) T-connectors into the SO-239s. Riun the 84º lines off one side of the T-connectors and jumper the 71º phasing between the other sides. Account for lead lengths inside the box, and the T-connectors, when cutting the Christman lines. Put a second relay in to short out the two SO-239s for "Omni". You can feed both relays with one twisted pair of wires by using diodes in series with the coils and reversing the polarity of the relay keying voltage.
Hi Bill, appreciate the comments. After this video I did exactly as you say with 2 SPDT relays. I've went with 1/8th wave spacing fed at 135 degrees due to my small garden. The phasing lines are 157 degrees and the delay line is 39 degrees. I've had mixed success so far. As you say it need lots of time to set up which I don't have. Thank you so much for taking all mt questions on Larrys Livestream. In this video I seen good F/B on the CW end particularly. 73, Colin czcams.com/video/wSQwMPiec9Y/video.html
Very nice video!!!! If you run into problems with your DC (control and switch) lines picking up AC noise (acting as antennas) and not recognizing commands, decouple them with a disc capacitor. .01uf is a nice general purpose size. You may be interested in the U Adcock array as well. It's receive only as built, but phasing for transmit should be the same. I worked on the AN/FRD-10 antenna, you may find that interesting also.
Thanks Colin. The systems coming together nicely. You’ve inspired me to make a video of mine too. I think I’m on version 5 now. Slightly different to yours as I’ve said in our DMs. Nice job mate.
Superbly done and (For me at least Perfect timing) I'm just starting to get things together to make a phased vertical set up for taking portable. Hopefully in time for WPX! Thanks Colin and looking forward to seeing you make the phasing lines! 73, Tom G2NV
Nice video Colin and a very interesting project. I will be following you and learning. It might be something I build for /p. Thanks for sharing and keep up the great work 👍🏻. De Will, M0LGW
Install SPDT (or DPDT) relay in metal box with two SO-239 connectors (3 if you want one for the feedline). The center of the feedline coax goes to the wiper arm of the relay. The NO contact goes to one SO-239 and the NC to the other SO-239. Put a diode reverse-biased across the relay coil. Close up the box. Put two (2) T-connectors into the SO-239s. Riun the 84º lines off one side of the T-connectors and jumper the 71º phasing between the other sides.
Account for lead lengths inside the box, and the T-connectors, when cutting the Christman lines. Put a second relay in to short out the two SO-239s for "Omni". You can feed both relays with one twisted pair of wires by using diodes in series with the coils and reversing the polarity of the relay keying voltage.
Hi Bill, appreciate the comments. After this video I did exactly as you say with 2 SPDT relays. I've went with 1/8th wave spacing fed at 135 degrees due to my small garden. The phasing lines are 157 degrees and the delay line is 39 degrees. I've had mixed success so far. As you say it need lots of time to set up which I don't have. Thank you so much for taking all mt questions on Larrys Livestream. In this video I seen good F/B on the CW end particularly. 73, Colin czcams.com/video/wSQwMPiec9Y/video.html
Very nice video!!!! If you run into problems with your DC (control and switch) lines picking up AC noise (acting as antennas) and not recognizing commands, decouple them with a disc capacitor. .01uf is a nice general purpose size. You may be interested in the U Adcock array as well. It's receive only as built, but phasing for transmit should be the same. I worked on the AN/FRD-10 antenna, you may find that interesting also.
Thanks, I will keep that in mind.
Thanks Collin for sharing this with us, looking forward to the line length calculation.👍🇬🇧❤️
Great job Colin !!
Really enjoyed this video, thanks
Thanks Colin. The systems coming together nicely. You’ve inspired me to make a video of mine too. I think I’m on version 5 now. Slightly different to yours as I’ve said in our DMs. Nice job mate.
Thanks Robb. As you mentioned its very addictive. Look forward to seeing your setup on video.
Superbly done and (For me at least Perfect timing) I'm just starting to get things together to make a phased vertical set up for taking portable. Hopefully in time for WPX! Thanks Colin and looking forward to seeing you make the phasing lines! 73, Tom G2NV
Thanks Tom. Good luck with the build.
How many watts can this system drive?
Well its handled 800w SSB with ease already. Its good for well over 1KW. Its for 45A relays though thats DC. Should be loads of headroom.
Great video,it’s given me a bit of confidence to try and build my own .Is there a shopping list of components?maybe I missed it,thanks,Karl G0SKW
Sorry,just seen the shopping list 😂
Cool, take it was in the description of this video? czcams.com/video/V0WJmoSf5vQ/video.htmlsi=KnlvALFWgx3vzz99
Nice video Colin and a very interesting project. I will be following you and learning. It might be something I build for /p. Thanks for sharing and keep up the great work 👍🏻. De Will, M0LGW
Thanks Will, I will be using this primarily/p
Thanks Colin de GM0CQV