Just go to http://soldersmoke.com. On that archive page, just click on the blue hyperlinks and your audio player should play that episode.
http://soldersmoke.com
Red did a nice job building, then explaining, this 18 MHz crystal oscillator. I especially liked his use of Manhattan techniques, and the way he explained his effort to make the new circuit work. Too often builders expect a circuit to work right away. This often doesn't happen, and the new circuit requires some troubleshooting. Red did this with this circuit and got it working.
Red has a nice YouTube channel: https://www.youtube.com/@RedSummitRF. It is focused on POTA, but we hope it has more and more homebrew stuff like this.
I've been a fan of Jeroen's YouTube channel for a while now. He has a very nice approach, combining theoretical knowlege with practical experiments and equipment builds. Here we see him using a photomultiplier tube and a board acquired in flea market to build his photon detector.
This video has a lot to offer us. First, there is a single thermatron. There is a tube socket. There is a (really small!) high-voltage power supply. He uses an oscilloscope. There is a laser. There are photons. And at one point, a single photon.
Having recently built a simple Wilson Cloud Chamber, my attraction to this device is easy to explain. I suspect our friend Grayson will be interested in it for Thermatronic reasons. There is a Part II. Check out the YouTube channel:
Here is more info on the channel and it's creator:
Hi, my name is Jeroen and on the Huygens Optics channel I publish videos on personal projects. My main fields of interest are optics, mechanics and photolithography. The videos aren't targeted towards a general audience but for people with a passion for science and technology (e.g. my fellow nerds).
The channel is named after the famous Dutch mathematician, astronomer and inventor Christiaan Huygens (1629-1695). He was the first to publish a mathematical description of the wave properties of light, and also discovered Saturn's rings.
Rogier PA1ZZ sent me this today. I think I may have seen pieces of it before, but this restoration
is really nice. But ham radio seems to have been a lot cooler in California. I don't remember it being so socially advantageous on the East Coast. See Dilbert cartoon below.
So many memories:
-- The video opens with someone working on a QF-1 Q multipliers. We have destroyed so many of these relics, in pursuit of the variable capacitors (which turn out to be not so good).
-- A Drake 2-B on Field Day.
-- An HT-37 in a shack.
--What looks like an HW-32a in a mobile rig.
-- Maybe an HW-101.
-- A BC-348.
-- The ATV station with lots of homebrew gear was very cool.
-- I also liked the single THERMATRON homebrew CW rig made from an old TV. FB.
-- The CW used in the video was all pretty good. There was a lot of chirp. This, of course, adds character to a signal. FB.
After the video, they take a walk down memory lane, looking at ham radio magazines with some cool jazz playing in the background. I saw a Swan 240 and a D-104. The debauchery of the 1970s was evident on the magazine covers. Even QST seemed to be caught up in this. Check out the August 1975 cover of QST.
Anyway, this video was a lot of fun. Thanks Rogier!
What favorite rigs do you see? Make note of them in the comments.
This video and the Dilbert cartoon reminded me of a discussion we had many years ago about THE KNACK:
As I have mentioned in the podcast and in blog posts, I have a lot of trouble picturing HOW 20 meter photons somehow fly off my antenna. I understand how EM WAVES are generated. But there doesn't seem to be any corresponding explanation for how the photons are generated.
This video looks at a related question: How BIG are the photons of visible light? I am not sure this is all correct (and neither, apparently, is the creator of this video) but it is very interesting.
Thanks Lex: Your message reminded me of a comment sent to me on the YouTube channel. The commenter seemed to criticize my use of a digital oscilloscope. Well, the criticism came to me via the internet, computers, and Starlink, so, yes, there are great advantages to using new technology! 73 from HI7 Bill N2CQR
Hello Bill and Pete,
On hackaday there is a post with the question : Are Hackers the future of amateur radio?
Although the term "hackers" is only seen by the masses as a term for someone who gains unauthorized access to computer systems (it even appears in the dictionary that way), IMHO it is much broader. I always explain it as someone who is interested in technology and uses techniques to use things in a different way than what they where intended or to add new functionality to existing things. But also inventing new things, whether or not to satisfy his curiosity, or to learn new things in order to expand his knowledge or be able to make new things.
With this in mind let us go back to the question: "Are hackers the future for amateur radio?"
I think that from the beginning of amateur radio, the OMs were a kind of "hackers" who satisfied their curiosity and tried things out by making things themselves. And I think it will certainly remain that way. The fact that we have started using more computer technology / digital things in our hobby is nothing but progress. You take technology as you can or want to use it. Think about the analog VFO from Bill and the Si5351 VFO from Pete, or petrol cars and electronics cars. Both have the same goal, just different tech. Or for example you can tighten a screw by hand, but you can also use a cordless drill. Do you have less technical skills? No, I don't think so, you are just more efficient, digital technology and computer technology have added efficiency to our hobby. And if other invent new things that we can use, who are we not to use those techniques to be more efficient our self or make new things?
Dan, KB6NU's put some nice HamRadio Hacking examples in his presentation (https://www.kb6nu.com/there-is-hope-for-amateur-radio/) like the SBITX (Full SDR with Raspberry PI), creating new firmware for Chinese ports, etc. We could even return to the question discussed earlier on soldersmoke: Are radio hams 'makers'.
And yes, the availability of off-the-shelf transmitters/receivers allows OMs, who are not so technically skilled or don't want to spend the time on it, to practice facets of our wonderful and broad hobby. So you don't have to be a "hacker" to enjoy our hobby. And to all the (self-styled) soldering iron moral knights who criticize these OMs, take a look around your shack, you probably didn't (or even can) make everything yourself and once you have bought things. It could be that boatanchor, your brass morse key or your first rig. And have you ever thought about you soldering iron, multi meter, magnifier lamp, wire cutters etc. . . Ok I'm just teasing now, but you all get the point.
Most of all, aside from the question if hackers are the future of amateur radio, lets enjoy our great hobby and when you like to melt some solder . . . Just do it.
Our friend Lex astutely focused on the date of the release of our report about legal prosecution by the City of San Francisco. The truth is that we made almost all of this up. We did put a sticker on a lamp post at Haight and Ashbury. Dave AA7EE did visit the site and report that the sticker had been removed. But all the rest was made up. We did catch several people in this annual April 1 joke. Unfortunately, not everyone who was taken in was outraged by the city's supposed action. In fact, we got one e-mail SUPPORTING the prosecution. This fellow said, essentially, that we were getting what we deserved, that we should take this as a life lesson, and stop with the sticker-vandalism. He was serious. Jeez. APRIL FOOL! We will talk more about this in the next podcast.
I know the podcast has been delayed by a lot, but I am still getting things set up here in HI7 land. I hope we will soon be podcasting with particpation from California (N6QW), Northern Virginia (KK4DAS), and the Dominican Republic (HI7/N2CQR).
Happily, my Dominican ham radio license came through -- I will be HI7/N2CQR for the next year. At some point I hope to take the Dominican exam and get a real Dominican call.
Lex has been our main point of contact in Europe on sticker distribution (aka VANDALISM!). Lex writes:
Hello all,
Shocked to hear about the "Legal action against Soldersmoke" in podcast :
some official is trying to make a career and he will be very busy because there are a lot of stickers in San Fransisco to remove.
somebody did remove the sticker because they are highly collectable and somebody at soldersmoke HQ saw a opportunity to made one of the best april fools jokes in soldersmoke history pulling the listeners (and readers) leg.
somebody use photoshop and made one of the best april fools jokes in soldersmoke history pulling the listeners (and readers) leg.
Looking at the release date of the soldersmoke podcast 251, IMHO #3 is the most possible with #2 as a good second. When #1 is the real reason, that sucks big time :-( (so I'm hoping for the april fools joke outcome)
Let's continue and get on topic to this e-mails subject.
My XYL and I are just back from a holiday to Berlin and aside of the architecture, visiting a large number of museums and historical exhibitions, there was one place on my personal list I wanted to visit : the "Teufelsberg".
* The "Teufelsberg" (Devil's Mountain) is a artificial mountain build with rumble of the ruins of Berlin on top of the “Wehrtechnische Fakultät”, covert soil and plated full with trees. In the early 70's the location became one of the most important locations for the United States’ National Security Agency (NSA) outside the United States. The facility monitors Soviet and Eastern Bloc communications and gathers important information on the activities of Warsaw Pact countries. 1992 the side got intrest of creative minds and started to get covert by street art.
Not only the historical part of the site, but also because the XYL and I love street art, we took a day visit it. Aside from the nice walk to it, the excellent view and the great pieces of street art, when you are at a site where street art is present all over the place and even is encouraged (and legal) and you "accidently" just happen to have a few soldersmoke stickers in you bag, you just have to use them. So as of this moment, Soldersmoke is present a the formal National Security Agency (NSA) spy station in Berlin.
I added a few images as a attachment to this e-mail including one to show the great view over Berlin when you on the top deck (only showing one placement, the other 2 are hidden in plane site).
In short : when you can apricate street art and visit Berlin, a visit to the "Teufelsberg" is almost a must. IBEW bonus : there are a few soldersmoke stickers hidden on the top dek for you to find ;-)
I was just testing it, working (as usual at this stage) on final amplifier stability. Then I heard ON5WO calling CQ. I could not resist. I worked him, but had to use a test lead to manually key the .1 kW amplifier. Minutes later I worked OH6RM. He very diplomatically said that I had "highly unusual audio." This was probably due to earlier efforts to shift the carrier oscillator to improve carrier suppression. (I will fix this.)
I will continue to work on the rig; It should look a bit better when I am done. But hey, it works! It has already crossed the Atlantic. Twice!
Before I built Martein's filter, my bandpass had been inadequate. Looking at the signals coming out of the diode ring mixer in my 15-10 rig, I realized that when I was on 15, there would also be an output on 10. And vice-versa. These outputs would have to be knocked down by the bandpass filters. I had been using simple dual tuned circuit filters. But when I looked at the filter shapes of these filters in NanoVNA, I could see that On 15 the 10 meter signal was only down about 20 db. And on 10 the 15 MHz output was also down only by about 20 db. That's not enough. Take a look:
Before, with the dual tuned circuit filter
After with Martein's Filter 21.5 Mhz
AFTER with Martien's filter 21.1 MHz
While the earlier filter had provided only about 20 db of attenuation at 28 MHz, Martein's filter provided at least 68 db of attenuation. That is really nice. And the passband is nearly flat at 1 db attenuation.
I built mine using some of the guidance provided on Martiens site. I did use T80-10 toroids (I got them from kitsandparts.com). And I did not use copper clad boards.
One of the charming features if Martein's filters is the total lack of trimmer caps: Martein recommends tuning the filters by simple squeezing the coils (to increase inductance and decrease frequency) or by spreading out the turns a bit (to decease inductance and increase frequency). I did the later when NanoVNA showed that I didn't quite have all of the 15 meter phone band on the flat portion of the curve.
I also like the way Martein provides the values for BP filters for all of the HF ham bands. Very useful.
Next I will build one for 10 meters. And I will probably go back to my Mythbuster and 17-12 rigs and build Martein's filters for these rigs.
Lex PH2LB sends this really interesting Vice story about stickers and sticker culture. Who knew? The original article is in Dutch, but just hit the Google Translate button and Bob will be your uncle.
I shared with our Solder-Sticker Community these thoughts:
Really cool Lex. This reminds me that we need more stickers. And maybe a new design. The IBEW thing confuses Americans -- here it looks like a labor union thing.
The Color Burst Liberation Army logo (below) is one possible element that we might want to include. I think our new stickers should exhort people to DO something:
Thanks to Rogier PA1ZZ for alerting me to this video and to the PA3CRX YouTube channel.
I like what Chrix did with the old CB transceiver case -- this gives me ideas about the old transceiver that I picked up at a hamfest a while back. I also like Chrix's practice of running coax and power leads UNDER the main BITX boards.
Chrix has been building some great stuff and making some very nice videos -- I have put his channel on the SolderSmoke links in the right-side column of this page.
Sometimes we get a comment that is so good that we elevate it to the main blog page. That was the case with Lex PH2LB's comment on the blog post of Owen Duffy (yesterday).
----------------------
When I started the hobby, it arose out of technological curiosity, the interest in understanding things and the will to make things myself (designing myself was not my main goal). It doesn't matter to me whether it is 100% DIY or a kit (such as Heathkit, Elecraft, QRP-Labs etc) which is modified or not after construction. Just having fun with the hobby and pushing boundaries. And yes I also have some off-the-shelf transceivers (I'm super happy with my FT817ND) and my QO-100 uplink is also a kit (which is then already soldered a little more than average). As far as new tools are concerned: here at home are 2 types of 3D printers, various tools for SMT assembly, and I have a nice workshop equipped with tools and equipment for metal / plastic / wood processing. And every day I try to learn something new, because I stand by the IBEW moto : If you know stuff, you can do stuff.
Am I a maker then? I wouldn't call myself that. Just like I don't call myself a hacker because I'm quite handy with computers, technology and have certain skills. I'm just a hobbyist who wants to do and make things after work.
---------------------
Lex is a true member of the International Brotherhood. He is the one who took our beloved stickers onto the European continent and into a Netherlands pub. He is the one who -- unforgettably -- saw the parallels between ham shacks and the "pleasure room" of "50 Shades of Gray" (See below -- apropos of his current message, we labeled his meme "50 Shades of Homebrew") For more on Lex see: https://soldersmoke.blogspot.com/search?q=PH2LB
This is almost too much. This makes me want to go out and buy some more test gear, maybe another scope, or a spectrum analyzer, or at least another DMM. I mean Tony has at least three of everything.
This is really amazing. Tony is obviously a test gear guy, but he also has a ham call PE1ONS. He says he is not too active, but we should encourage him to get more involved with ham gear. We need guys like him working on ham gear. And he seems like such a happy person.
I am awarding the coveted Brass Figlagee with Bronze Oak Leaf Palm to Dave W2DAB, to Lex PH2LB, to Jesse N5JHH, and of course to Pete Juliano, N6QW. More awards are possible. http://www.flicklives.com/index.php?pg=215&recno=2590
Lex PH2LB in the Netherlands has gone the extra kilometer for the IBEW. When he saw the stickers that had been placed in New York City, he asked for the design. I sent him the files that Jesse N5JHH (designer of the stickers) had sent to me. Very quickly, Lex had 500 of these stickers printed up and ready to go (see above). His shack now serves as a veritable beachhead in Europe for the IBEW and the CBLA. Thank you Les!
Les has even set up an on-line order form for those who seek to assist in the noble campaign to spread the word about our cause:
I first saw the link to Onno's site on Peter VK2TPM's blog. And at first I confused it with the site of another great homebrewer Miguel PY2OHH. This is all very IBEW: On the website of an Australian ham, I spot the web site of a Dutch ham living in Spain and briefly confuse him with a Brazilian homebrewer with a very similar callsign. TRGHS.
Onno PA2OHH has an inspirational approach to the hobby that he presents in a really wonderful website. Here is his intro to Barefoot Radio:
Barefoot technology and Barefoot power!
Barefoot technology or simple, non-professional radio technology and real Barefoot power or harmless QRP power, that is what you will find here. There are some complex designs but many designs are simple radio amateur circuits. They will never be used professionally! These simple circuits and rigs can give you much fun: home brewing, portable activities during holidays, etc. Batteries and inverted V dipole antenna's with a fishing rod as the center support are all you need to make many QSO's.
Much fun! Barefoot technology and Barefoot power can give you much fun, but is not perfect... There are disadvantages like VXO control instead of a VFO, direct conversion receivers that receive both sidebands and simple frequency displays that are not so easy to read. But working with such simple equipment is often more exciting than working with a much better commercial transceiver. Perhaps that you cannot believe that you can make many QSO's with QRP power of only 1 watt. Indeed, some practice is needed in the beginning so do not give up too soon. Every boring standard QSO becomes an exciting experience with QRP power!
It is good every once in a while to step back from our electronic work benches and take a look at what other kinds of builders are making. Hack-A-Day led me to this wonderful video from Holland. There is great background information on telescopes, but the really great part is the interview with the Dutch fellow who is actually making -- in his home workshop -- these tiny telescopes. Icing on the cake: One of them will be used in a student Cube-Sat project in Oregon.
Be sure to stay to the end for an intriguing presentation by Dr. Liam Fullersheit.
Recent talk of the Mate for the Mighty Midget receiver and Pete's PIMP SSB transmitter brought me back in contact with the work of Jan, PA3GSV. I took a look at his QRZ.com page and found that he has some projects that rival even his seemingly unbeatable MMM RX project.
That would have been a very different movie. And I don't think the box office results would have been favorable. That's PH2LB's "pleasure room" (shack). He has a good blog focused on homebrew:
I was looking for information on my FeelTech FY3200s Signal Generator. I came across a very informative blog; it covers a variety of other Chinese gear and parts. Here is the Feeltech FY3200S article:
"SolderSmoke -- Global Adventures in Wireless Electronics" is now available as an e-book for Amazon's Kindle.
Here's the site:
http://www.amazon.com/dp/B004V9FIVW
Bill's OTHER Book (Warning: Not About Radio)
Click on the image to learn more
Where are the readers of SolderSmoke Daily News?
Pete Juliano N6QW
SolderSmoke Co-Host and Master Homebrewer
Dean Souleles KK4DAS
With beret and with a Michigan Mighty Mite in hand
Linux Mint, QRP, & C / C++ Compilers
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Greetings:
On the bench I'm studying PLL techniques using a sample & hold detector +
VHF circuitry. Currently, I've got nothing to post RF-wise. Another...
December 11, 2024. We take things for granted.
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We often take things for granted! You know, you snap on your homebrew rig
or appliance box, and it comes alive. Or that if you want a fresh salad,
there is...
MeSQUAREs alternative - 1/32" board
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MeSQUAREs are excellent. I've purchased them from QRPme in the past and
used them with great success. I get through them very quickly and find it a
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HRWB 224 - 2024 Holiday Shopping Show
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In this episode we give you the buyer's guide to holiday cheer. The team
put their heads together to come up with many suggestions for the
workbench, ha...
The November - December 2024 SARC Communicator
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*Another BIG issue*
The final issue of the year. The November-December Communicator, digital
periodical of Surrey Amateur Radio Communications is now avail...
Hollow-State Design, 3rd Edition
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Hollow-State Design, 3rd Edition is available from: Lulu Press:
tinyurl.com/hollowstatedesign3 eBay: search for “hollow-state design”
Electric Radio bookst...
I Finally Bought My Dream Airplane
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Aviation has been a love of mine since I was a very little person. Living
in Nevada, seeing posters and ads for the Reno Air Races, specifically the
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2000 47pF Caps ...
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An unexpectged package arrive in the mail today. Did you ever wonder what
2000 47pF NP0 capacitors look like? Thanks to John, AB2XT I will never run ...
New QRP Cluster From OM0ET and OM6APN
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By DX EXPLORER
DX EXPLORER
Paul OM0ET and Peter OM6APN recently launched a new cluster dedicated to
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Daylight Again – An all Analog Radio
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What’s all this? In 10 seconds, A high performance, 7MHz, 5 watt SSB rig
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range 3D ...
Digi-chirp! Digital synthesis of ‘nostalgic’ CW
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The bottom ends of 80, 40 and 20m are not what they used to be. For
starters, the busiest part is the digital segment where computers talk to
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SMA Torque Wrench for the NanoVNA (uncalibrated)
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I have been using SMA connectors on most of my projects, and have
occasionaly gotten a slightly different reading than I had expected. Using
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40m SSB Tramping Rig
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Please see my YouTube channel for details of the build.
http://www.youtube.com/c/CharlieMorrisZL2CTM
*2N3904 Antenna Amplifier (initial)*
Voltage gain is ...
Modifications to the Dayton/FDIM-2019 Antuino
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The Dayton Antuino has sub-optimal performance. This is a short note on
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2.0 (the o...
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Here is a neat, 30 minute hack for your Raduino to turn the Si5351 into a
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QRP Labs shop!
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All QRP Labs kits may be ordered online securely at the shop, with PayPal
payment.
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