I rearranged the power supply and body of my FTM-500 because I noticed that even if the radio had been off, if I left the PS on it created enough heat for the 500's fan to come on and stay on when powered up. That was with the radio body stacked directly on top of the PS... So I split them up onto their own shelves. I then also made #3Dprint risers that have a hex pattern for better ventilation, particularly on the PS which has most of its vents on the underside. #hamradio
Message body line2: Do you carry an HT with you or keep a radio on while you are doing other things around the house or in the yard? [Y/N feel free to explain]
Message body line3: Do you agree to have your callsign shared in the check-in list? [Y or N/opt-out]
Please boost and encourage each other to practice using Winlink!
Here's a fun signal processing challenge that we invented during a hiking trip through cornwall 10 years ago:
At Lands End, there's the "Lighthouse" which emits an acoustic beacon consisting of regular loud beeps, presumably bc. this can be caught by sailors even in thick fog. Now, the question that occurred to us immediately: How far away from Land's End can you capture this sound with a microphone by using very steep FFT filters and convolution methods? Miles? Further? #hamradio #electronics
From another club:
On the 146th day at 5:20pm local time everyone get on 146.520 and see who you can talk to.
146th day of 2024 is May 25th and it's a Saturday!!!"
I went looking for different ways to use AllStar repeaters from the comfort of my home, and it seems to be lacking any kind of dedicated client for Linux, let alone something for iPhone or the web.
Does everyone just set up a hotspot/node and operate that way? I’m thrilled about a diy project, but I was surprised there wasn’t a straight forward way to just connect via software like EchoLink.
There are some new comments on my #Inclusivity in #hamradio blog post on @kb6nu blog. I'm not sure if something happened to re-surface this conversation, but I am happy people are engaging with it.
Even "Joe" who threatens me to "support straight christain hetero males and females… we are the majority that pay to keep the arrl alive…remember that !"
Thursday and Friday were busy. First, we had a joint meeting with ZHP, LOK, OPOR and PZK to develop a unified stance on amateur radio service exams. This includes transferring exams to community examiners from the amateur radio community, eliminating session-based exams and fixed dates, implementing an electronic exam platform, and defining satellite amateur service.
Doing some major pre-planning for the ham radio event I am volunteering for today: determining where the aebleskivers booth is, and when the Abba tribute band gets on 🤪 #hamradio#aebleskiver
Direct generation of radio waves using a special generator:
Next super long wave Grimeton #SAQ transmission on 17.2 kHz will be on Alexanderson Day July 6, tuning of the transmitter 8:30 UTC, transmission 9:00 UTC
Since it is in the audio spectrum, It can be received in Europe using merely a long wire and a sound card input! More specialized loop or active antennas are advisable. #hamradio #electronics
Reading the wikipedia article on microwave ovens and found this sentence in the part describing the frequencies they use:
"The third, centered on 433.92 MHz, is a narrow band that would require expensive equipment to generate sufficient power without creating interference outside the band, and is only available in some countries"
You know what this means? With a big enough amplifier, you could cook your food with a Baofeng.
What saddens me is so many hams think a dipole is best because it presents a "perfect match" of 50ohms. Wrong. A dipole is roughly 72 ohms if you are lucky and wildly different depending on height and structures nearby.
Yagi antennas are even worse depending on the design and often need an antenna tuner hidden at the antenna. Get the lowest loss feedline you can use and don't feel guilty about the tuner in the shack.
Sent some emails today looking for a local tower rigger to fix my busted 6m beam... Hopefully the rigger who put it up in the first place is still in the business. Also sent an email looking for a replacement piece from the 6m beam manufacturer..]
I love the cherry picker idea! If only I knew someone with a cherry picker who could help! 🙂