|
Post by Massimo IU1IAZ on Jun 3, 2019 12:39:35 GMT
Hello,
as many of you I'm building my own magnetic loop antenna. (1m diameter wide) Since few weeks ago I'm using the antenna and I have to say it working well.
As Paul (OM0ET) describes:
- I made a gap in the shield of the outer loop
- I connect only the inner coax at the capacitor, leaving the sheld untouched
Now the questions are:
a) why the cut in the shield is so important?
b) assuming the gap (few centimeters), somethimes in the web I saw the shield are connected together in the bottom of the outer loop (near the box)?
Thank you in advance.
IU1IAZ - Massimo
|
|
|
Post by Paul OM0ET (Admin) on Jun 3, 2019 19:32:47 GMT
Hello Massimo, I tryed later also version without gap and antenna still work fine. When I compared both of them I realized little more output power from loop with gap. But difference was very small, almost nothing. ;-)
|
|
|
Post by Massimo IU1IAZ on Jun 15, 2019 20:12:45 GMT
Dear Paul, sorry for late reply.
Thinking about the gap....
How did you measure the antenna efficiency? Did you use a Field Strength Meter?
Have a nice Week end. Massimo.
|
|
|
Post by Paul OM0ET (Admin) on Jun 16, 2019 5:31:13 GMT
Dear Paul, sorry for late reply. Thinking about the gap.... How did you measure the antenna efficiency? Did you use a Field Strength Meter? Have a nice Week end. Massimo. Yes Massimo I have used an analog signal strenght meter and compared both loops changed on one construction on the same place and same antenna direction.
|
|
|
Post by Lambert on Feb 4, 2021 16:37:50 GMT
Do I understand correctly: there is no need to make an opening in the main loop? For the small loop, only the inner core is connected to the capacitor. What dimensions must the loop have to work from the medium wave to, for example, 30 MHz? Can copper tubing also be used for the outer loop? The loop is only for receiving in my case. Thank You very much for an answer
Greetings Be Safe
Lambert Belgium
|
|
|
Post by Jerold Beauchamp on May 7, 2021 8:33:18 GMT
Hello Get your content marketing going. We write articles for your website or blog. We syndicated your articles for better reach. Check us out at GetArticlesDone.netTake a look and bookmark us now. Best Regards! Your GAD Support Team PS: Why? More content means more visitors. We have highly rated US/UK Writers. Original Content. Fast Turnaround. Lowest Pricing. If you do not wish further communication you can unsubscribe your site at unsubscribe.getarticlesdone.net
|
|
David from Sqribble
Guest
|
Post by David from Sqribble on May 9, 2021 7:11:53 GMT
Hey there my name is David, I wish to first begin by saying your site is amazing! I feel like you can use a bit more text material though.. and I understand it's quite annoying creating all of it yourself. Do you by chance also have problems making Reports, Guides, Digital Info for your visitors content or even E-BOOKS? Basic things like providing an E-book can help you get thousands of brand-new leads per month! New advanced innovation has actually JUST been released that permits you to INSTANTLY produce professional Ebooks, Reports, Guides, Lead Magnets, Whitepapers, and digital info-products AUTOMATICALLY, and "ON-DEMAND" ... at a push of a button! Try it. > sqribble.club/
|
|
|
Post by Steven Gerace on Jul 4, 2021 16:07:55 GMT
Hello! My name is Steven Gerace from ColdReach.Rocks I’m reaching out to see if you’d like to test our new lead generation software. This software can help you find new customers. Check it you at ColdReach.RocksWe have helped hundreds of businesses to fill their calendars with interested leads. We have excellent support. The software works and is super easy to use. Try it out now. Let me know if we can be of assistance for you. Best Regards Steven Gerace ColdReach.Rocks If you wish no further communication you can unsubscribe at coldreach.rocks/unsubscribe.html
|
|
|
Post by Nydia Reiss on Jul 10, 2021 10:14:57 GMT
Hello! My name is Nydia Reiss from Repwarn.Rocks Do you know when someone talks bad about you or your business? Monitor your online reputation with this new tool. Auto-check the web, social media and your competitors in real-time. Check it out now at repwarn.rocks/It takes years to build a good reputation and only minutes to destroy it. Can you afford to let it happen? Take action now. Best Regards Nydia Reiss RepWarn.Rocks If you wish no further communication you can unsubscribe at repwarn.rocks/unsubscribe.html
|
|