Radiohyperactivity

05/12/2025

https://youtu.be/FQ7W7KZ3iRc

15/11/2025

https://youtube.com/shorts/yUgv2om8Iyg?si=nlaQ4ZlElbEEMNAV

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10/10/2025

New video: Ultimate LoRa APRS Tracker Upgrade | Heltec Wireless Tracker Rebuild

After watching LB0FI Morten’s video on his Heltec Wireless Tracker build (link below), I realised my own LoRa APRS tracker had taken some heat damage over th...

26/09/2025

Winding down a month of testing aftermarket HT antennas with this round on telescopic antennas. We've already seen that the genuine Diamond RH770 telescopic whip does a fantastic job on both my Vero VR-N76 and the Yeasu FT5D. In this video we use that, and the stock antenna from the FT5D as a reference when testing the No-brand NA-773 (form AliExpress), the Abbree AR-775 and the No-brand RH660S (also from AliExpress). We test all three both collapsed and extended, and compare them to the stock FT5D and RH770 antennas.

Winding down a month of testing aftermarket HT antennas with this round on telescopic antennas. We've already seen that the genuine Diamond RH770 telescopic ...

19/09/2025

This week I'm looking at short/stubby antennas, and comparing them to the stock antenna on the Yaesu FT5D. It's probably not going to surprise anyone that these are not very good antennas, but I will try to answer what I think is the relevant question: How bad can they be?

Video link in comments!

08/08/2025

Join me as I build for this quick and easy build of the Powerpole Inline Volt Meter. If you have access to a 3D printer, wire, some Powerpole connectors and a couple of screws, this build will set you back less then 2 Euro/Dollar! Full bill of material, build instructions and STL files for the 3D prints on Github!

GitHub repository with documents and pictures referenced in the video:- https://github.com/radiohyperactivity/powerpole-inline-volt-meterJoin me as I build f...

21/06/2025

I've been wanting to do packet radio almost as long as I can remember. Ever since I first heard about it, which was back in the old days when spirits were brave, stakes were high, men were real men, women were real women and Internet access was done with a 2400 baud modem! Having spent a few days reading up on how to do this, I fear that was the last time the documentation was updated as well! But I did, in the end, manage to get an AX25 node up and running; and even one that would give me a regular Linux login shell on a Raspberry Pi. So everything was set to try out the exciting new iPhone App from . And I have to say; this is just too cool. Logging in to a host on my home network - over RF. Using a $10 Chinese HT! This will not be my last packet radio video; that's for sure. Subscribe so you don't miss out!

I've been wanting to do packet radio almost as long as I can remember. Ever since I first heard about it, which was back in the old days when spirits were br...

15/06/2025

Can you do APRS on a $10 radio? As it turns out, absolutely. It does however require some help; like the Mobilinkd TNC4 and the aprs.fi iPhone app. APRS on 70cm doesn't seem to be widely used around these parts, but the NRRL band-plan lists 432.500 HMz as the APRS frequency. I'm assuming this is the same for all of region 1.

https://youtu.be/k5yHzyKKzDw

Can you do APRS on a $ 10 Chinese radio? Turns out you can, and rather successfully too. It does however require a few "optional extras" so to speak. Join me...