Raspberry Pi Zero 2 WSPR Range Testing With An EFHW Antenna
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- Опубліковано 7 лют 2025
- Here we take a look at the Pi Zero 2 and test how far it can transmit using WsprryPi, available here: github.com/Jam...
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Great project!! Just remember you must have license privileges on the frequencies you’re transmitting on. Your call sign is going out for the world to see. 73
On rpi-imager you can hit Ctrl+Shift+X and a hidden menu will popup, where you can enable ssh, change hostname, input wifi credentials and many more, so you can save some time and not do it manually (creating files in boot etc). Great video, keep up!
i was just about to say the same thing lolol sorted :)
Thank you :-)
THANKS!!!! this is always a hassle
Same comment! So much easier than having to make the ssh and wpa-supplicant files by hand. Plus you can also set the Pi hostname that you can then use with a ".local" suffix, like `ssh pi@wsprpi.local`. Cheers!
Awesome thanks, what is that funny sound you made right at the end of your audio on the video. Had me in stitches?
Was just seeing who actually watches to the end! haha 😂 Thanks for watching 🙏
That is magic! Great way to test out new antenna configurations.
Thanks for this, looks like fun and worth sorting some filters and having a go. Would be interested in other potential applications for the Pi Zero 2.
Does not seem very secure to enter the SSID and Password on that site when it is just a text file it creates. You can easily modify it later and fill it manually.
It's a great project and many might want to use one as an alternative to the WSPRlites, no longer available. The power consumption might be an issue, but it should be OK for a few days from a moderate USB power bank. A vertical antenna cut for the band of interest is often preferable, notably if you live over moist soil or are anywhere near water.
you could feed the pi into a low power mag loop .. the tight Q should be better than a bandpass filter . and use a generic lna for a PA :)
Good idea!
Hi! Thanks for your video. I have been playing with my Pi 0 for quite some time and i only use a small hat pcb to route a female SMA and a small SMD mini-circuits low pass. My output power on 20m is only 5.6mW and my antenna is a crappy G5RV on my building rooftop (see my QRZ page). I have been spotted even by ZL fellows which are at exact opposite point of the globe for me (Portugal). That means nearly 20.000km away with 5.6mW output power. Amazing!
Forgot to mention my callsign... CS7BAC. 73!
This is absolutely AWESOME! Do you need an amateur license for WSPR? The bands you were TXing on are amateur bands, so it seems to be a prerequisite. Am I wrong? I am blown away by the ease of use of the Raspberry Pi with such comfortabl tools. In the past I programmed embedded CPUs and controlllers using assembler in avionics (Harrier FADEC, Airbus fuel system) and in those days it was really inconvenient. No erasing UVEPROMs with UV light any more! Use of an OS (we just had scheduling 'monitor' programs then), high level language, on board compiling (we had cross-compilers running on dev systems) linking and high level commands for installing (we had to put the whole scheduler linked to useful program on an UVEPROM then put it in the avionics computer board before we could test with an HP 1610 logic analyzer! Fantastic video! Many thanks! Rob in Switzerland
Yes, you need a HAM license to transmit on these bands.
Great video! Do you have an example of what type antenna is required?
Thank you!
You're welcome!
Great video! This is something I want to experiment with. Any suggestions or recommendations for the low pass filter? Anything in particular to look for when purchasing one?
Wow, that’s impressive!
Pretty cool eh Stu!
Does the Raspberry Pi 5 have the same feature, i.e. the ability to output a programmable clock frequency on a GPIO pin from an internal PLL?
Great project, thanks!
Youre welcome! 🙂
and dont forget to use a Antenna bleeder resistor ...rpis dont like static down its gpio ... lol i know ..
Great little project...can you recommend supplier of QRP 49:1 balun and LP Filter please 73 Rob
Did everything as you did in the video,wspr starts up and says it will start tx on the desired frequencyes,but won't actually start to transmit or write anything else im the terminal.it just waits there.
It a pi 4.somewhere i've read I need to change gpu frequency somewhere?
what antenna is used?
will this work without the internet also?
what is the possible maximum transmission speed limit?
will this work with RPI zero old versions too? What's the benefit of using RPI zero version 2 in this WSPR specific task?
Great Video and results: But what practical use is it for me? I have a IT background and am interested in 2 meter radio (don't own any but may buy one - get licensed of course, if I need to) and was into CB radio back in the day , in the 1970's !!!!!!! Just wondering what practical use if could be for me. Not being sarcastic, just really want to know how it could benefit me.
It’s a way to see how far your antenna reaches out
That is really amazing
where can you buy the pi zero 2 ? Can't find anyone in stock or those that have them are selling at ridiculous price
Great video , but how did you control the timing?
It's automatic as the app polls the timing from the internet.
Any idea what the wifi adapter is on the pi zero 2? What speed/bandwidth can do?
Any idea if pi zero 2 can do spyserver
Is the internet connection only needed for the NTP RealTime Clock for the Pi? If so, could you just use an RTC module on the Pi instead, and run it without the internet? It's just that it would be handy to be able to run this "out in the field" where there may be no internet signal available.
An RTC would require the use of the GPIO pins 7 and 9 which are used for the antenna. I’d just invest in a ZachTek desktop transmitter for that. I’ve had one for about a year now. They’re more or less plug and go. It uses GPS to keep time and the pre programming is easy.
Good god! What sorcery is this!
Love the ending, made me laugh. HmmmmYeah.
Haha I wanted to see who actually watches until the end lol.. 😂
@@TechMindsOfficial Me too , I checked the comments just to know who noticed the Miaaaaw END :)
Any recommendations for a source of LPF and RF amp? Thanks.
I do a small kit for 20m, message me direct for info..
Meowww back at ya!
Does anyone know if this will work with the Pi Zero W rather than the W2 version which is harder to find and much more expensive
Yep, it will work. I have tested it :) thanks for watching the video.
The elusive Pi Zero 2
Good luck getting one at the moment, they’re like hens teeth.
In order to transmit legally, a HAM Radio License is REQUIRED for running this experiment. The output is a square wave so a low pass filter is REQUIRED.
Love this, simple even if it is kind of brutal.😄 Great video!👍
Anyone know if this is possible to achieve with a Arduino without any external crystal oscillators or signal generators like the SI5351 etc.?
Would like to use this for "foxhunting" at 80m (3.5-3.6MHz). 73 de SA5VOX
Would be nice if something like this would be on CB bands! 🙂
You could run this on the CB bands, it will work, but the problem is there are not many people listening on the band to report receiving your signal so you would never know it's working. Also not sure about the legality of it, seem to recall that CB is voice only, no data allowed. Check your local licencing before trying.
👍👏👏
RPI zero w-2 is not that cracked out to be. Can't even run old distros that work so well with rpi zero w's
So the new hardware is at fault because the old software doesn't work on it? ;)
When new hardware comes out there isn't a kill signal sent to old hardware. If you genuinely have a use case for older software that doesn't work on newer hardware use older hardware until new software is available.
@@steveparkes Get triggered im not installing some shitty os with broken libs.
@@Un_Pour_Tous That must be the funniest thing I've ever read. I'm going to presume by 'triggered' you mean 'be aware of the irony in making an off topic complaint about the developers of older software not having the foresight to make it work with hardware that doesn't exist' and finding it hilarious ;)
Reasonable people see the issue you're having and see two solutions, have patience , or do something to help the open source project they are so emotional about reach their goals. If you can't do number two (and if you can't write a bug report then we're going to have to withdraw your UA-cam commenting privileges) then do number one like a reasonable person. Don't snap and call people 'triggered' when you are bitching about stuff you can help to fix if it's so important to you.
zzzz...…...
mmmmmyeah
Yo dude!! How’s things?
@@TechMindsOfficial Yeah doing ok how about you? Need to catch up on discord with chris or something
Great but not for regular Ham it's complicated
There’s something for everyone in ham radio, just depends on how far someone is willing to push themselves to learn. Thanks for watching 🙏
no its not it is real easy ..really easy .
I'm a total radio noob but what's the volume of data that you can send with WSPR?