GMRS Yagi Antenna Tips - Improving Reception and Transmission
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- čas přidán 10. 09. 2024
- GMRS Yagi Antenna Tips - Improving Reception and Transmission is a video about how to take your Yagi antenna and boost its capabilities by making a yagi parabolic antenna. This is a basic 3 element Yagi antenna tuned to GMRS frequency 467.000. To improve its reception and transmission I coupled it with an old parabolic satellite dish. I demonstrate how using a satellite dish improves the antenna's capability versus using it alone.
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GMRS Yagi Antenna Dimensions:
Director Element: 1 ft and 7/16 inches (12 7/16 inches)
Driven Elements (2 needed): 6 and 3/32 inches each
Reflector Element: 1 ft and 7/8 inches (12 7/8 inches)
Element Spacing: 4 and 3/16 inches each
GMRS 3 Element Yagi Calculator: www.csgnetwork....
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VLOG #169
You might try holding the Yagi vertical instead of horizontal. I did the same thing with a 2m Yagi and could not talk to a friend 12 miles away. My antenna was 10 feet up. I took the Yagi down, turned the antenna so it was vertical and had no problem talking with him. We were both on home made Yagi antennas, vertically polarized. We we 12 miles apart. Durning the second test, I had my Yagi about 1.5 feet above the ground.
Yes, I learned that orientation is vertical very soon after posting. I appreciate your advice. Thanks for watching and commenting.
Idk if it was added, but the yagi should be placed in the vertical orientation. Transmitting and receiving in the same polarization greatly helps simplex. I believe there is a crazy loss in the order of 20+ dbs when you have a vertical to a horizontal. That will help. Good job building your own antenna! I love it!
Thanks
Have you tried it held vertically instead of horizontally? The repeater antenna is mounted vertically.
No, but I sure will. It worked extremely better. Thanks!!!
Yes you’re probably losing alot by being cross polarized
I tune my antennas to 465 mhz, the center of the GMRS band. Alos, I think that if you ran the coax alsong the boom (long enough to clear all elements), you might avoid the 10:1 SWR. Also the yagi should have the elements oriented vertically (unless your repeater has a horizontally polarized antenna).
Thanks, I'll try extending the coax. Yes, I quickly realized I needed to change the orientation. I appreciate the advice.
Great video and thinking. We redoing some work with a Yagi GMRS tuned Yagi antenna and using a Celestron SE4 to mount the antenna and track with software. Celetestron sells for about $500 to $600. this also give you a visible telescopic view.
Thanks!
I think if you was to build a quad you will see a real good performance out of that I would also recommend that if you build a quad used 4 element instead of 3 it'll get you a better range
Good job 👏
Thanks for the information and suggestion. I appreciate it and will see how it works.
AS soon as I saw your handle I noticed the Yagi aluminum elements should face up and down not left and right during transmits. You do not want to make it look like a TV antenna. It is not a beam antenna.
Yes, I realized that very quickly and was instructed by someone to change the orientation to vertical. It works much better that way. Thanks.
Thank you for sharing the Yagi-dish build. You may have solved our situation, in a gulley surrounded on 3 sides by hills. WRMN477.
Glad I could help! Turning it vertical will help. I also would experiment with turning the front of the antenna towards the dish and see if it will improve your capacity to transmit and receive. You may have to move it in and out to get to the sweet spot where the signal focuses from reflecting off the dish. Good luck and let me know it works.
@@ReturningtoBasics COPY. May be later this summer before GMRS base station up and running. The goal is to reach out to our daughter's office west of us. Did not realize polarization effects Yagi.
Yes, it does. I didn’t either but another person commented and informed me. It really helps.
This very interesting. How far away is your repeater? I’m looking to reach one 15 to 20 miles away. Also, do you think if you built one with more directing elements you would get more gain?
About 15 miles. Interestingly, I took it to my mountain, north of Hardy, AR, about 65 miles away and hit the repeater from there but I had to be about 20 feet elevated to get out of the vegetation. Regarding additional elements, from my research I concluded there would not be any significant gain so I stayed with 3.
@@ReturningtoBasics That’s encouraging. Thanks for your reply.
So that piece of coax is acting as matching system?
I actually don't know. I adjusted it until I got a 1.1 swr and then mounted it there. I also learned that I was holding it horizontally and should have been holding it vertically. That makes a world of difference in reception.
Turn the yahi 90 degrees. Vertical not horizontal. 😊
Yes, found that out. It sure works better that way. Thanks.
Blessed love to all, can you help me out with a couple antenna specification, I need specification for the 2,3,4,5 element yagi flat side antenna for 11 meter cb radio band, please an thanks bro, I always build my own antenna down here in Jamaica for years, thanks again bro, if you are going to help me, I will send you my WhatsApp number, bye now bro !!
I know nothing about cb multi-element antennas. Have you searched CZcams and Google for plans? That would be my approach.