Seeing lots of red-tailed hawks along the river this winter. I can never seem to get the camera up in time when they are headed at me and usually catch them flying away. At least in this shot you get a good look at that torpedo body and those amazing wings.
He was licensed in 1933, and by 1938: "I discovered that my great interest was to be able to build things that you could carry with you that would be portable - I enjoyed taking things out and taking batteries along with me to a park and being able to operate portable." Well look at that #pota in the 1930s! #DLARC
Listening to Al Gross W8PAL interviewed in 1991 on the "Ham Radio and More" show discussing the history of ham radio. He starts with his memory of building a crystal radio in 1930 and hearing 160m hams. https://archive.org/details/hamradioandmore_1991-08-04 #DLARC
I made my own version of K3NG's Arduino CW keyer. Using an Arduino Nano. All components were sourced from AliExpress. The PCB was designed in KiCad. It will be used to key the Xiegu X6100 during next Region 1 CW fieldday.
Will be documented in detail on https://www.golb.be/nano-keyer/
Gerber files and links to the components will be shared.
@va3db: I noticed this on the DLARC wishlist -do you know anyone who might have "Anything from Ottawa (ON) Amateur Radio Club Packet Working Group relating to high speed Packet Radio, especially the “Packet Interface” (PI) card that the PWG developed, and any newsletters." https://archive.org/details/dlarc-wantlist
@va2nw Not only is it important that we respect park rules, but I think that everyone participating in POTA should follow the example that Thomas, K4SWL sets in picking up any trash that they encounter. A small trash bag should be in everyone’s POTA kit.
@xek @rationaldoge The mentor has it correct. Pull up a 1/4w dipole or vertical using whatever tree or support is available before even cracking an antenna book. The book will help after you have a classic, well-tested starting point.
@fl0und3r It's mechanically a little tricky to hoist a vertically polarized dipole. A ground-plane can be made for a couple of dollars from a SO-239 and be hung from the top, or hoisted on a pole of some sort easily. For example: https://www.jpole-antenna.com/2018/08/21/build-it-2-meter-1-4-wave-ground-plane-antenna/
@stephen In my head, I was thinking of those Lilygo boards that you can buy, connect a battery, flash meshtastic and go. I'm not skilled enough to work on protocols, so in my head APRS = "use existing FM transceiver and infrastructure" or instead I could buy new low power, low cost boards that implements a more efficient, modern protocol. The later could be a choice between something like CATS boards or Lilygo T-beams. Sorry if I misunderstand, and yes, I see huge advantage to a FLOSS radio.
@fl0und3r Congrats! Height is king on UHF! I have found simple lightweight ground plane hoisted as high as possible to be a great performer. The only time handheld yagis really win out is when you are already standing somewhere very high.
@KC1PYT While I don't doubt there are many scofflaws, you really can't guess power output from signal strength. With the solar maxima happening, rather than atmospheric tropo, you are going to see regular ionospheric skip. Hams are snagging regular transcontinental contacts on 10m. You won't hear flutter, but you may hear fast or slow fading. You are a thousand miles from FL. They could be running a million watts and you wouldn't hear them via line of sight. Enjoy it while it lasts!
@stephen If you are talking about all-new, embedded systems acting in your radio network, your competition is really more the LORA (eg., meshtastic") stuff, rather than APRS. Really, the ONLY advantage to APRS over anything else is that it works on amateur FM transceivers. It also does already work at 9600 on 70cm for most radios with built-in APRS. Good luck! Looks interesting!
@tony It's too frustrating. I am fine with tolerating people being crass, dirty jokes, whatever, but "don't use the n word in here" is about the lowest possible bar imaginable. Even cutesy variations, or ironic use shouldn't just get laughed off or defended- It doesn't fool anyone, and just normalizes it. I teach my children better than that, and I simply wouldn't feel right defending why I have an IRC window open with it, nor to a colleague. I know we are better than that, it's just sad.
@hb9iah I generally agree, and like to use it a lot. However, take your BNC connected coax, connect it to something that can measure quick changes to SWR, and move the coax around. I've found that many BNC connectors are loose enough to cause it to jump around, while I've never ever seen a PL-259 maintain anything less than a perfect connection under mechanical movements. I'm not sure the "bayonet" style connector mounts were ever designed for equipment that could be damaged by a bad connection.
@va3db reactance, gain, take-off angle. Only one of those can be "fixed" with a matching network.
@VE6LK @kelvin0mql Apparently, as a cell discharges, sulfuric acid comes out of the solution and binds to the plates as lead sulfate. The reduced sulfuric acid content lowers the density of the electrolyte. So a hygrometer is testing the state of charge for each cell independently. Obviously, a healthy, charged battery will have all cells come up to a full charge. https://batteryuniversity.com/article/bu-903-how-to-measure-state-of-charge