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Alex VA3ASE
Canada
Registrace 12. 01. 2015
Join me as we explore different niches of the ham radio hobby! I focus on amateur radio satellites but also enjoy POTA, Field Day, and whatever obscure ham radio activity I come across.
Ham Radio Satellite Contacts on my Mini Antenna Array
In my last video I assembled a "mini-array" for amateur radio satellites. I used two Arrow II antennas phased together for circular polarization, mounted on a Yaesu G-5400 az-el rotator. Today we build the controllers to steer the antennas, finish the station assembly, and get on the air for our first QSOs with the new setup.
Check out "The Radio Artesian" K3NG's website for more details and source code for the rotator controller.
blog.radioartisan.com/arduino_rotator_controller/
Check out "The Radio Artesian" K3NG's website for more details and source code for the rotator controller.
blog.radioartisan.com/arduino_rotator_controller/
zhlédnutí: 19 206
Video
Ham Radio Satellites with Two Arrow Antennas and Circular Polarization?
zhlédnutí 20KPřed rokem
My new "mini-array" is born, using two Arrow antennas phased together. I'm using switches that allow changing polarity between vertical, horizontal, left-hand and right-hand circular polarization. This setup is an experiment to test if switchable polarization will allow these little antennas to outperform a set of higher gain fixed antennas in real amateur satellite use. Either way this will be...
Receiving SSTV from the ISS with SDR (simple and automatic)
zhlédnutí 4,9KPřed 3 lety
A few times a year, the International Space Station puts on events where they transmit images on the 2m ham band using SSTV. In this video I show how you can set up an RTL-SDR or SDRplay with free software. Best of all you can set up the software and leave it unmonitored. Download SDR-Console: www.sdr-radio.com/download Download MMSSTV: hamsoft.ca/pages/mmsstv.php Download VB-Audio Virtual Audi...
VA3ASE Station Tour
zhlédnutí 2KPřed 3 lety
Join me on this virtual tour of my ham radio station focussed on satellite and VHF operation. I present an overview of the antennas, tower, feedlines, rotators, transceivers and software used in my home amateur radio station. Equipment seen includes Icom IC-7300 HF/6m transceiver, Icom IC-9700 VHF/satellite transceiver, Yaseu G-5500 rotators, MFJ manual tuner, and various home-brew antennas and...
Hi Alex. We printed your 45 deg mount, and are going to use an Alaskan Arrow antenna with it. I'm going to try to use a PVC (Schedule 40) cross boom as the Alaskan is longer/heavier, so I'd like to have it balanced. Hope I can fit the mount inside a 1in (Inside diameter) PVC pipe. Haven't gotten that yet. For now, not going to have RHCP but will look into how you did yours.
What a cool idea, I'm a little wary of those CF PETG mounts due to the leverage on them, careful in windy conditions. Best part about 3D printing is you can easily make spares
Hi Alex, Great video, I am considering building a K3NG antenna positioner but instead of using traditional antenna rotators with potentiometer feedback I want to use mems magnetometer and accelerometers for position feedback which the K3NG software does support. I wonder if you have an opinion on the viability of using this type of position feedback, in particular the angular accuracy of these devices.
Hi I'm glad you enjoyed the video. You are correct about K3NG supporting an HMC5883L digital (magnetic) compass and ADXL345 accelerometer for feedback. I have experimented with these sensors a bit and was able to get them working on the bench, though I haven't tried mounting them to antennas for real use. It has been a minute since I looked at the datasheets but I believe they claimed 1-2° accuracy / repeatability (or less). That's more than enough when your typical antenna's radiation pattern is >20° wide. The potentiometer feedback from the G-5500 is very crude and I wouldn't trust it to be accurate or repeatable to less than 5°. It's probably worse than that actually, but still fine for most applications, only becoming an issue with very high gain and narrow beamwidth antennas. Keep in mind the sensors (especially the compass) will need to be mounted away from motors and power cables to avoid magnetic interference. This is the main reason I never finished testing them. It's not a big deal, just requires some planning. I hope it works out for you!
Fine business, Alex. Keep up the great work. You're inspiring casual viewers to pursue another facet of amateur radio. Congratulations on your wonderful accimplishments. 73 N2YIB
Great video .i wish I had friends that gave away 2 x£350 worth of preamps.
I've found that the ham radio community can be very generous when they see someone who is passionate about the hobby and wanting to try new things. Making these videos is one way I've tried to give a bit back. Glad you enjoyed watching!
The phasing kits look good but using BNC plugs….uggg.
Great Video ! Can you with dual Arrow Antennas receive signals from Lunar Workers in the near future ? The Tech to return to the moon to stay, can take US and the world to Mars and beyond ! tjl
keep it up
I LITERALLY just bought one of the Arrow antennas to use for Field Day! 🙂 - And like you, I've beem running fixed polarization (vertical in my case) for satellite operation, with the resultant fading issues you mentioned, so I'm VERY interested in seeing how your project turns out, I may do the same! 73, Tom WA1LBK
"🚫 no whining" haha like this sign!
Thanks Alex, really interesting video. I've dabbled with satellites with a fixed white stick antenna and managed to work a few passes using an FT-847 with Doppler control via the PC. I have an antenna interface for the Yaesu AZ/EZ mount but need to spend a little more time thinking about antennae but I really like what you have set up here with the polarisation options and the harnesses. It has been.a slow burner project - it got rudely interrupted by a project to set up for the QO-100 geostationary satellite which has been good fun, but I can feel the LEO satellite itch returning! Good luck with the field day, hope you manage to post some footage :) 73 de M0SNR
You did just what I want to do
Congrats on a very nice design and setup- recently started playing with SATS here extremely minimal setup, you have given me a couple ideals to try with antennas-
Alex, great job putting this together. I've been wanting to modify Arrow antennas much as you did for a few years. Some questions. 1) does it make any difference whether you drill the holes in front of the existing cross beams or behind? 2) I'm assuming you made a 90 degree phasing harness; any specific plan you used? 3) any unique problems you experienced reconfiguring the Arrow antennas? Thanks & 73! Jeff, WK3U
I'm putting together a g5500 right now and the EL moves with just finger pressure...is this normal? The az is locked solid but even mild back pressure from the cables causes it to move.
No, the internal gears should prevent you from moving the AZ or EL rotors by hand. Make sure the mast is not slipping, it can be hard to clamp securely without crushing it.
You need a SAT tracker
They do look cool but I've been pretty content with my laptop-based setup. I would still be curious to test a SAT Tracker out and make a video for it (I could return it afterwards). Send me an email if that sounds interesting.
Need to explain about the phasing of the ant
Showoff 😂
Many of us here participated in the SSTV event a few months back. It was quite fun and the whole WhatsApp group was filled with SSTV images for a couple of days. I used my IC2730, homebrew Moxon Yagi and Robot36 app in an Android phone. 73 de Jon, VU2JO.
Hello congratulations about your new contraction so we waiting for next video with results! De SV4IMN
Incredible piece of work! You got me jealous. VA3 ICH (Toronto)
Congratulations on this very interesting project. I'm looking forward to the second part. 😀 vy 73 de Andreas, dl5lc
Oh, now I see there is another video on your channel...
Hi Alex, Chris here HS0ZJB I am thinking about getting into the satellite scene, I noticed this post is 10months old now how are you getting on with is system today (I may copy your idea's) tks
Здорово. Эти приводы дорого стоят
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Excellent? Where you using a circular polarization for this contact? I was thinking about building with just a circular polarization rather than switchable or fixed horizontal/vertical with a switch as some do. Have you ended up just using one setting over the others since yours is switchable? is circular the way to go for satellite to avoid switching?
Hello Alex, Thanks for sharing.
Alex! I was skipping around looking at videos about doubling up on Arrows on the same boom, and guess who I heard loud and clear as your first QSO with your X-pol pair? ME!!! I'm gonna email you and get a convo going, I'm setting up a mobile unit somewhat based on AG7NR's outstanding unit, but I have a pair of Arrows I want to mod, so thanks! 73's de Chris W7BMD
Congratulations on the first contact! And that ladder trick is actually very nice! 😁👍
Hi, i would recommend a counter balance weight on the antenna motor shaft! And a slow start stop function on the motor! This will increase the lifespan of the motor and gears a lot!! 😉👍 And it will also make it go a lot more smoother and more accurate!😁
I desperately need part three 😂 … please
If I understand this correctly, are you using a satellite as a repeater station ? How far away was your first contact. Dont have my ham licence yet, but currently studying.
Thanks Alex. Rich VE1RPX
Great build & setup, congratulations, 73 de iz3qvb
Great video! Lots of great info.. Do you have a write up on the project? Wondering if you jotted down a bill of materials and such? I have the “Alaskan” Arrow and was thinking of buying a second and doing the mods to make one for UHF & the other for VHF, like yours. :)
What a great project. Looks like you're a very technically skilled person. Enjoyed the 2 videos about this project a lot.
Hi Alex, thank you for sharing your adventures in this fantastic hobby. It's inspiring and so good to see. Keep it up.
Please increase volume! I am using microphone preamp, following guitar amplifier following another power amplifier... in order to be able to hear your voice.
That's a great station Alex. Congratulations! de W2MSA
I will be using a Computerized GOTO Tripod & Mount used for telscopes to achieve what you are working towards. With load capacities between 20-45 pounds they are ample for the task. And are already computer controlled.
Excellent work!
How are you balancing the weight of your antennas? Looks like most of the weight is towards the front. I like the use of a ladder as a tripod. Do you think you will build a case for the original rotator equipment and to include all the new stuff?
Now that I see it again (as you are moving it around), I think I misjudged the sizes and what you have looks right to me now. 73 Tom kC3QAC
You know more about this than I do Alex, but to me your 2m elements look reversed. Shouldn’t the reflector be larger than both the director and the driven element? To my eye, your director looks larger. 73 Tom KC3QAC
I use the Fox Delta rotor controller. It works well except that the Yaesu wiring diagram has the wiring on AZis backward
Great work. I will check out your other videos. I would like to do some satellite work but at least for now it would have to be portable work. 73 KY4K
Great video and build!
Kanadyjski znak wywoławczy... To wasz Kanadyjski rząd popiera i promuje nacjonalistów Ukraińskich. To wasz Kanadyjski rząd popiera i daje schronienie mordercom i ludobójcom... To wasz Kanadyjski rząd popiera ludzi odpowiedzialnych za LUDOBÓJSTWO NA POLSKICH KRESACH WSCHODNICH, LUDOBÓJSTWO NA WOŁYNIU.. To wasi politycy mówią że nic nie wiedzieli o tym... tak jak Hitlerowcy oni również nic nie wiedzieli..
Great setup
Beautiful.