Viewing profile — swalberg

Would something like this work at much lower frequencies? Being able to see RF at 3-30MHz would be fantastic for hunting RFI in the amateur radio HF bands.

This reminds me of https://www.cs.cmu.edu/~rdriley/487/papers/Thompson_1984_Ref...

Neil Gunther extends Amdahl's law to the Universal Scalability Law in https://www.perfdynamics.com/Manifesto/USLscalability.pdf (pdf). He uses it to help model a system's scalibili…

GUE Fundies is on my bucket list. I don't think I'd be interested in cave diving or deep stuff where I need helium, but the level of skill that tech divers show is something I want…

Father of 3 here, first two were home births, the third had complications and ended up being a hospital birth. I was initially skeptical for the same reasons but the first meeting …

Was just talking about frequency references last night -- the ARRL Frequency Measurement Test is this Thursday evening https://fmt.arrl.org/

The meteors leave a tail of ionized particles that people on the ground can bounce RF off of. Ham radio operators use this, e.g. the MSK-144 mode. Pretty cool to hear/see signals a…

My first celebrity crush as a kid. She's also in _Revenge of the Nerds_. Those two movies made young-me think that being a geek could be cool.

The NFL passes net income back to the team owners. The taxation is generally the owner's problem.

I didn't realize they licensed private tour guides. My son's scout troop went to Gettysburg and joined one of the NPS tours. The guy kept a whole lot of teenaged boys engaged and i…

I don't know any part numbers but have a look at what the Morserino does ( https://www.morserino.info/ ) or this reddit post: https://www.reddit.com/r/amateurradio/comments/ag7xpi/…

How are the ergonomics of that key? Between the switch with the spring and having to hold that in your hand to use, I'm wondering how accurate the keying is? One suggestion might b…

Sorry... DX is short for a distance contact, so someone outside of your country. There are 340-odd "DX entities" defined, some of them incredibly rare (Bouvet Island, North Korea),…

Hams have privileges on 2200m, too! At those wavelengths people are using big loading coils. Saw a video last week of a guy in Alaska with a sizeable loop in the trees and was putt…

DX'ing and contesting. I enjoy making quick contacts with people all over the globe, and sometimes having to go to a map to find out where they are. Contesting is also fun. There a…

It is cool and still gets updates. One thing to note is that almost all the information comes via a ClearSky API, so I'd often find that the data didn't line up to more official so…

Morse code is flourishing even without it being a requirement. People are discovering what a fun mode it is -- the low power portable people love the reach you can get on 5W, other…

What I like about the hobby is that it can be a lot of things to a lot of different people. So the emcomm/prepper crowd is very interested in practicing communications for when exi…

If you find the park reference you can submit logs to pota.app after the fact. Any qso counts.

It's getting more and more popular within amateur radio. If I look on the Parks On The Air spots page, there are currently 20 people in a park across the US doing Morse, and I know…

+1 to this. I started learning Morse with that same Google site and it's optimizing for reading, not hearing. Took me time to unlearn everything and do it properly.

I have one that I attached to an old antenna rotator so I can control it from the network. And another that monitors Github's status API and lights an LED when they're down. Got a …

It's a short form of "best regards". In message handling there was a table of numbers that could stand in for phrases to save time. That one made it to common ham lingo.