antenna 80m

Post new topic   Reply to topic

View previous topic View next topic Go down

Re: antenna 80m

Post by Admin on Fri Apr 14, 2017 10:27 am

Hello Valentin,
Thank you very much for your mail. In a couple of days I will be travelling on business again, so please address all technical questions to http://sm0vpo.forumstopic.com where you will get a quick answer (account created for you as requested . details sent via e-mail).

As regards the question, it sounds like a nice idea, but the antennas must be very accurately tuned to the + and - frequencies, and they must be spaced a little bit apart (0.2 wavelength?), That is if you use the director/reflector principle as you suggest.

It could possibly be better to have more than one driven element and phase them to give you directional properties, just as they do with LTE mobile telephone with "beam forming" antennas.

But I like the idea, it could be some food for thought.

If you need any assistance logging into the forum then please let me know. Also welcome to the SM0VPO forum :-)

Best regards from Harry - SM0VPO


Last edited by Admin on Fri Apr 14, 2017 1:19 pm; edited 1 time in total (Reason for editing : needed gooder grammer)

_________________
(Thanks to those who tried and couldn't make the QSO. Back on 14.200MHz Sundays from the 24th Sept.)
avatar
Admin
Admin

Posts : 418
Join date : 2012-11-24
Age : 65
Location : Märsta, Sweden

View user profile http://www.sm0vpo.com

Back to top Go down

antenna 80m

Post by ur5med on Fri Apr 14, 2017 10:25 am

<posted by Harry from mail from Valentin>

Dear Harold, I repeated the design of your loop antenna at the 80 meter range. I was able to conduct a radio communication in the JT65 mode on this antenna for a distance of 3000 kilometers.
If you complete your design with the same frame director and reflector and adjust them accordingly, then you can get a small-sized directional antenna for a range of 80 meters and get some gain.
What can you say about this antenna design?
I will be very grateful for your reply.


Sincerely, Valentin / UR5MED /


<Valentin now has an account :-) >

ur5med

Posts : 1
Join date : 2013-03-23

View user profile

Back to top Go down

View previous topic View next topic Back to top


Post new topic   Reply to topic
 
Permissions in this forum:
You can reply to topics in this forum