HarmlessHAM retweeted
Amateur radio (or ham radio) refers to the use of limited radio bands operating outside of commercial broadcasting purposes for the public to communicate without cell phones or the internet.
Take a look at some amateur radio ads through the years with our #FridayFlashback📻
RT @MarcusRoskosch: Ultra Beam Support Now Integrated into All Ham Radio Apps #Ultra Beam #HamRadio ham-radio-apps.com/ultra-bea… …
HarmlessHAM retweeted
Elecraft K4 Apps for iPad and macOS Now Available on the App Store ham-radio-apps.com/elecraft-…
HarmlessHAM retweeted
DL8MRE’s iOS & macOS app supports all major brands — Icom, YAESU, FlexRadio, Elecraft & Kenwood.
📡 Run FT8 from your Mac, iPhone, or iPad — in the shack or on the go (POTA-ready!)
👉 Download and take your rig anywhere
ham-radio-apps.com
#HamRadio #FT8 #POTA #AmateurRadio #iOSApps #MacHamRadio
HarmlessHAM retweeted
📻 Amateur radio shaped modern tech, from satellites to the internet. Yet, much of its history is at risk of being lost forever. 🕳️ #VanishingCulture
Why does this matter? Because creators don’t always realize they’re making history ➡️ blog.archive.org/2025/01/14/…
ALT “When amateur radio enthusiasts die, their media collections are often disposed of by survivors who don’t have any connection to amateur radio. File cabinets and bookcases full of (sometimes irreplaceable) materials are emptied into recycle bins.” Kay Savetz Radio & communications curator
HarmlessHAM retweeted
Celebrating Milestones in Amateur Radio History! cyhams.org/wp/?p=7943
#amateurradio #hamradio #hamr #Ραδιοερασιτεχνισμός #εορτασμοί #celebration #50years #50χρονα
HarmlessHAM retweeted
A much more affordable down-converter for people who have SDRs like RTL-SDR, AirSpy, SDRPlay, or entry level spectrum analyzers that work up to 2/3GHZ:
moRFeus: a 2-in-1 tool. It has 2 modes: mixer and RF signal generator, working between 30MHZ to 6GHZ.
Works with USB power (no internal battery)
Doesn't require a computer to work.
Here's a screenshot of receiving a 2.4GHZ signal down-converted to 1GHZ using a SDRPlay RSP1A (which can only receive up to 2GHZ)
159$ on CrowdSupply
Want to extend your SDR or spectrum analyzer’s range? Most cap at 6GHz, but a down-converter shifts higher frequencies into measurable ranges. I use one from Lotus Communication Systems (made in USA) to analyze signals up to 14GHz!
Example photo attached: A 12GHz signal converted to 3GHz.
It’s software-defined, so I can adjust the LO frequency. (e.g., 8GHz input + 2GHz LO = 6GHz & 10GHz outputs. Mixers produce both sum and difference of the 2 signals, so it's also an up-converter)
Note: These mixers degrade phase noise & amplitude of the input signal.
HarmlessHAM retweeted
I'm currently growing a series of YouTube short videos about things I learned as an electronics engineer - some hints and tips from my Electronics Notebook.
Currently there are just a few videos there, but I am adding more as the days and weeks go by.
youtube.com/playlist?list=PL…
HarmlessHAM retweeted
SignalSDR Pro: An Upcoming SDR with 70 MHz to 6 GHz, 12 Bit ADC, 61.44 MHz Bandwidth and 2TX/2RX Channels rtl-sdr.com/signalsdr-pro-an…
HarmlessHAM retweeted
Wow just Wow! @G3VZV operating back pack portable with just 10 watts from St John Newfoundland (in the Americas!) on QO100 - who said it couldn’t be done 😊
Well done Graham and David.
maps.app.goo.gl/zHjWLGK9mic6…
HarmlessHAM retweeted
VMware Fusion Pro 13 Now Freely Available for Personal Use macrumors.com/2024/05/15/vmw…
HarmlessHAM retweeted
A short and beautiful highlight video, created by @kepolasfilm , during the C49C participation in the 2024 CQ WW WPX SSB Contest.
youtu.be/h3PsnFtTAbw
HarmlessHAM retweeted
This guy Ken W6HF with a real home made satellite antenna. Small piece of scrap lumber and some brazing sticks. He hit multiple satellites during field day at KL2R station. Amazing operator !
