low-cost 433MHz antenna shootout (eight of 'em)
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- Опубліковано 30 жов 2017
- Testing 8 low-cost antenna options for 433MHz (70cm band).
Equipment used:
Standard Moteino ($12.99) at www.lowpowerlab.com
lowpowerlab.com/shop/product/99
(I used these for both the base station as well as the hand-held mobile unit)
The antennas I used (or comparable model):
(Note: some links may not be valid anymore)
Antenna #1 (centre-loaded quarter wave vertical)
www.ebay.com.au/itm/SMA-Male-...
Antenna #2 (PCB J-Pole)
www.ebay.com.au/itm/New-433MH...
Antenna #3 (short helical)
www.ebay.com.au/itm/433MHZ-1X...
Antenna #4 (sleeve dipole)
www.ebay.com.au/itm/New-433MH...
Antenna #5 (PCB Dipole [my design])
Order PCB from OSH Park directly: oshpark.com/profiles/captcha
How they were made: lowpowerlab.com/forum/rf-rang...
Diptrace design files: lowpowerlab.com/forum/rf-rang...
Antenna #6 (monopole, bit of wire)
See this video for tuning the wire: • monopole 433MHz antenn...
Antenna #7 (short helical for high power)
www.ebay.com.au/itm/M-Male-PL...
Antenna #7 (whip antenna)
www.ebay.com.au/itm/AU-Stock-...
On the base station I used the short helical (same as Antenna #1)
30 dB Attenuators
www.ebay.com.au/itm/Golden-At...
Earlier test with similar results;
www.marcelpost.com/wiki/index... - Наука та технологія
Interesting results. Would love to see more designer antennas
Hmm.. yes, it's a fascinating area of design. Love to get into designing PCB antennas as well.. At the moment there's a few other interests that are taking my time away from further working on the antenna side of things, but I'll definitely post things when there's something noteworthy to talk about.
Hi, can you post in the description of this video, a link to the "motino" unit. And links to the aerials you bought.
Hi Tom, thanks for the feedback. Yes, I should have placed those links sooner. Click on 'show more' and you should find the details about the equipment I used.
All links are now in the description under the video.
I thought the Nagoya whip antennas were actullay a bazooka dipole? I have one here for 70cm and you can see the large diameter antenna to up to about half and then it is smaller in diameter.
There *may* be a different design that is being sold on the Internet but the one I have (similar to the one in the picture as shown in the video) is almost a constant diameter all across the length of the antenna. I have not dismantled this antenna but I can feel that it is a spiral / helical wound whip antenna and nothing more. Can you share a link perhaps for some more information on the antenna you're referring to?
Hi, the part number is 771 Nagoya. I was told by a friend(Alex Greve with VAS) that builds antenna that this was a bazooka type dipole. It very well could be only a single element antenna because the item description shows it as a dual band. That may explain the two different lengths of diameter. I use this on my HH radios and I used to use it on my UHF radio for my model planes. Here is a link to the antenna:
NAGOYA SMA-Female Two Way Radio Dual Band VHF+UHF Whip Antenna 15’’ for Baofeng UV-5R BF-888s/Kenwood/Wouxun Walkie Talkie www.amazon.com/dp/B07B63XF81/ref=cm_sw_r_cp_api_ypx6Bb230ZJ12
Thanks for the feedback, yeah, those antenna's can be quite an improvement to the stock-standard antenna that comes with these radios. It's a worthwhile upgrade to anyone wanting to get (a lot) better performance out of their HT.
Any chance of sharing that pcb dipole design?
Absolutely, here they are on OSH Park directly: oshpark.com/profiles/captcha and here is a forum post I did describing how they were made: lowpowerlab.com/forum/rf-range-antennas-rfm69-library/easy-pcb-dipoles-for-433-868-and-915mhz/ You'll find the diptrace design files there too.
Of course, I have linked the gerbers and diptrace files as well as links to OSH Park for direct ordering of the antenna on this forum post with Lowpowerlabs: lowpowerlab.com/forum/rf-range-antennas-rfm69-library/easy-pcb-dipoles-for-433-868-and-915mhz/