This seems very timely becasue my son and I are watching the NETFLIX version of "The Three Body Problem" by Cixin Liu. This deals with an entirely different war of the worlds.
Check out Chuck's CW version of the book. Thanks Chuck!
DSS-43 boasts a pointing accuracy of 0.005 degrees (18 arc seconds)—which is important for ensuring that it is pointed directly at the receiver on a distant spacecraft. Voyager 2 broadcasts using a 23-watt radio. But by the time the signals traverse the multibillion-kilometer distance from the heliopause to Earth, their power has faded to a level 20 billion times weaker than what is needed to run a digital watch. Capturing every bit of the incident signals is crucial to gathering useful information from the transmissions.
The antenna has a transmitter capable of 400 kilowatts, with a beam width of 0.0038 degrees. Without the 1987 upgrade, signals sent from DSS-43 to a spacecraft venturing outside the solar system likely never would reach their target.
Geoff N6GWB and his eldest have produced a really wonderful receiver, and have joined the elite ranks of those who have built their own receivers. Congratulations to both! ( Be sure to watch the video below.)
Geoff writes:
Though I built it, my eldest has retained naming rights. Behold the Rad Radio Receiver, an Soldersmoke inspired build. It’s a 40m DC reciever. I had planned on making this a truly 50-50 N6QW N2CQR build, but I needed to get it done for a show and tell this Wednesday. I have N6QW dual JFET RF amp and mixer modules. I have the N2CQR ceramic ocillator circuit from the 2017 DC receiver project. I had planned on including the all analog audio amp from the more recent N2CQR DC project, but alas, time got the best of me. I was hoping to make the whole thing all-analog. (I thought the all analog would get me more “hard work” kudos at the show and tell.) I ended up including a LM386 audio amp making this a bit of a cyborg.
Here is short clip of a very cool HB2HB contact on 17 meters. Thanks Jens!
Check out his QRZ page here: https://www.qrz.com/db/DL2RMM
"I have discovered spurs in the output of my transmitter. They are 60 db down, but I still can't stop thinking about them. What should I do?"
I can't help thinking that if Jean Shepherd had access to something like this, his Heising modulator trouble might not have spoiled his date with the girl from his school.
What do you guys think about the Woebot?
Click on schematics for a better view
I have had Ian on the SolderSmoke blog several times: https://soldersmoke.blogspot.com/search?q=%22Ian+Keyser%22
Audio: http://soldersmoke.com/soldersmoke251.mp3
Travelouge: Dean goes to the North Pole to see Aurora.
A CBLA Call to Arms!
Winterfest. Lots of goodies. MXM Industries 40 meter transceiver. 1 dollar.
Legal Trouble: Could put us out of operation for a while. We need listener input.
Pete's Bench
Homebrew SDR (based on Zl2CTM’s original design) and how good it sounds.
Raspberry Pi Zero W is now working on FT-8 with digital adapter.
Ferrite Cores at Digi-Key (a replacement for the FT-37-43 where you buy 100 and the price is 21 cents/each)
ADE-6 –great specs in HF but more expensive than the ADE-1
For Pete's recent blog posts, go to this site and click on "Archive" in the right column:
https://n6qw.blogspot.com/2024/03/march-31-2924-happy-easter-to-those-who.html
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Dean's Bench
sBITX progress, McGyver-ing a lifted pad, replacing crystal on the CODEC board, sBITX success! See:
https://kk4das.blogspot.com/2024/03/homebrew-sbitx-tx-modules-pa-lpf-and-mic.html
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Shameless Commerce Division: Please use the Amazon link on the blog to start your Amazon purchases. And please consider using Patreon to support the podcast and blog. We try to send extra content to our Patreon supporters. Mostly DIY RF -- Boards, Kits and Pete's PSSST
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Bill's Bench
More trouble with the 15-10 rig. Rounded passbands in 25 MHz filter. See figure 4 in both links:
https://www.arrl.org/files/file/QEX_Next_Issue/Nov-Dec_2009/QEX_Nov-Dec_09_Feature.pdf
https://www.networksciences.com/pdfs/tutorial.pdf
Experimenting with Balanced Mixers and Product Detectors. Paul VK3HN Suggests the MC1496 chip; Walter KA4KXX points to SSDRA circuits
But it is on the air! Using the PA from a BITX40 module and an RD06.
Put an OLD dial from Pericles HI8P on 15-10 version 1. Soul in the new machine.
Grayson KJ7UM's Hollowstate video.
Mike WU2D's amazing 10 meter DSB transceiver.
Jack AI4SV (Dhaka Jack) liked video of recent QSO with AzoresDSB rig
Mike AA1TJ and Dave AA7EE on backwaves and 100 uW QRPpppp
Dave G3UUR on my curved passband problem
Alan W2AEW heard my only QSO with the MXM indsutries SupeRX/TX40
Wes W7ZOI, Mike WN2A, Walter KA4KXX. Farhan VU2ESE on passband,
Ramakrishnan sent article about Charles Proteus Steinmetz. Beautiful.
Justin AC8LV built a receiver! FB.
San Francisco QRP: KDOFNR TouCans Rig, and N6ASD Zinc-Oxide TX
Frank KC8JJL -- Another guy who heard first ham sigs from a homebrew rig.
Nate KA1MUQ's homebrew thermatron superhet
Dino KL0S sent info on the PAL CB VFO I picked up at Winterfest. Airborne!
Bob W8SX will be once again doing SolderSmoke interviews at Dayton. Thanks Bob
Peter VK2EMU Always good to hear from him.
Tobias Feltus -- Wisdom teeth removed, wondering if he will get sBITX hallucinations...
Rick WD5L continues to work on his Herring Aid 5
Ciprian YO6DXE wants to learn CW. No alerts from his FB Blog!
Todd K7TFC -- Likes CW, says it eliminates the Blah-Blah-Blah
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