Trying to Repair Some Old Gear, He Got Hit with a Dose of LSD!

Oh no, here's something else for us to worry about when working on old gear.  As if the treat of electrocution or radioactive poisoning were not enough, now we have to worry about being hit with a dose of  the 1960's drug culture. That could be one bad trip indeed.  Imagine if you were having a hard time troubleshooting the Buchla Model 100.  All of a sudden things start getting weird and your test gear starts dancing on the bench.  

Fortunately, this is not likely to happen with a rig like the DX-100.  With rigs like that the only similar danger is nicotine poisoning. 

https://allthatsinteresting.com/engineer-accidentally-takes-lsd?fbclid=IwAR2KzZl3qoL6oqq5SqWYquKpHR2mGxk2GN2Kk0O-ytUb9MNXmVNX9XnyeaU

Thanks to Stephen Walters for finding this groovy story. 

Coming Soon! An N6QW Action Figure!

 

A few quick mods and Bob will be our uncle!  

(Pete will be our Fauci!) 

Think of the many possible accessories:  

A soldering iron!  A beret!  An Si5351!  Pasta!    

It's an INVESTMENT!

 

Exactly what we've been saying about Drake 2-Bs and copies of SSDRA!  

Argentine SSB (BLU) Homebrew from Guillermo LW3DYL

Really nice work.  BLU is Spanish for SSB.  (Juliano BLU?)

But I think Guillermo needs to build ONE MORE BOARD!  A VFO or a VXO.  Analog. To finish the job.    Guillermo tells me this is in the works -- he selected an IF of 11.0592 MHz specifically so that he can use a variable oscillator built around a 4 MHz ceramic resonator.  

Complete schematic and PC board patterns on his site: 

https://qrplw3dyl.blogspot.com/2021/04/transceptor-blu-para-40-metros.html?fbclid=IwAR0BLMVfVTxMlVy1WyUovVJ0FVrrkMulFxeuu24lkjdkW8j-6QX5g_yV05o

Click on the Bloc Diagram for a Better View:

Homebrew Lives! TWENTY N6QW Simple SSB Transceivers Under Construction in Northern Virginia

IF strip by Don KM4UDX

This has to be one of the most successful of SSB group-build projects.  Dean KK4DAS has been leading 20 members of the Vienna Wireless Society in the construction of N6QW's Simple SSB Transceiver, with Dean's "Furlough 40" additions.  This is very FB, and very encouraging.  Dean clearly has The Knack.  Just two winters ago I was smuggling a 3.579 MHz crystal to Dean for use in a Michigan Mighty Mite.  He has clearly made a lot of progress.  

-------------------------

Dean writes: 

It has been just over a year since I completed my initial build of the Furlough 40 with much coaching and assistance from Pete. Mike and Don are two out of 20  members of the Vienna Wireless Society Makers group that is working on a group build the SimpleSSB project as enhanced by me to include features like CAT control for digital modes.  Beginning about six weeks ago the group is progressing module by module per SolderSmoke best practice advice.  We started with the audio amplifier, followed that with the Arduino/SI-5351 based controller module and the builders are just completing the IF module.  This week at our weekly meeting, Mike proudly showed off his success.  

-------------------------

Read all about it, and see some really great videos here:  

https://kk4das.blogspot.com/2021/04/homebrew-lives-furlough-40-simplessb.html

Leon NT8D's Front Panel

What Kind of Car Would Have this Plate?

 

We are proud to say that the owner is a SolderSmoke listener.  Can you figure out what kind of car he is driving? 

(See comments for answer). 

For Your Vacuum Tubes: Isotopic Ionization Sources from U.S. Radium

One or two podcasts ago I mentioned radium in regulator tubes.  As I predicted, this provoked a number of comments about how silly it is to even mention such things. Nonetheless, I find it interesting.  It seems that real radios really do glow in the dark!   

More info on the company: 

https://en.wikipedia.org/wiki/United_States_Radium_Corporation

http://radiumgirlsnhd.weebly.com/

RIP Isamu Akasaki -- Shared Nobel Prize for LED -- Analog Guy

From the obituary in the Washington Post: 

In addition to the Nobel Prize, Dr. Akasaki’s honors included a 2009 Kyoto Prize — Japan’s highest honor — recognizing developments in advanced technology. He found that some technology, however, needed no advancing at all. He took great pleasure, for example, in long-playing classical music records.

On that point, he joked, “I am analog.”

N6QW On 40 Meters with a Civil Air Patrol Dentron Scout -- WYKSYCDS

 

Pete is in the air with his Dentron Scout.   Check it out: 

http://n6qw.blogspot.com/2021/04/2021-conversion-of-dentron-hf-scout-is.html

WYKSYCDS = When You Know Stuff You Can Do Stuff.  Pete proves it.  

"The Perfect Trap for the Engineering Mind" -- Leo Fernekes' Stirling Engine

I did a post about Leo back in August: 

https://soldersmoke.blogspot.com/2020/08/great-video-on-pc-board-techniques-with.html

Although it is not about radio, homebrewers will find much to resonate with in Leo's Stirling engine project.  

Warning:  There is a Part II.  And there may be more.  Proceed at your own risk. 

Shortwave Event: Brother Stair is Dead

https://www.live5news.com/2021/04/04/colleton-county-pastor-ralph-stair-dies/?fbclid=IwAR2g607BgdaxodCVIjQjdOYg_O-CHyr-LYFpKjbCyRmyTbYcGaieiaDPRQM

A Satellite Ground Station (Receiver) Made from Junk

Very cool.  This guy (who brew up on an island in Alaska) really knows how to use aluminum tape and the junk that fills most workshops. I like his use of the security camera mount as an az-el antenna rotator. 

I foolishly discarded a Direct TV dish.  I could have been receiving GOES images by now! 

Just last week I got the same RTL-SDR.com V3 dongle that he is using.  Very FB.   It does HF direct sampling with no hardware mods and no upconverter. 

More from the builder, Gabe Emerson (KL1FI): 

https://www.youtube.com/channel/UCNLRcEn78Vc62C3GkMvBgtA

http://www.saveitforparts.com/

A VERY Successful April Fools' Day

 

I was worried.  It was early on the morning of April 1, 2021, and I had NOTHING. Maybe this  was because so much unbelievable stuff has recently happened in the world.  Or maybe it is because technology has been moving so fast that today's April Fools' joke is tomorrow's new device. Whatever the reason, for the first time in about 15 years, I had noting.  April Fools' Day has long been part of ham radio's culture and I was worried that I would not be making a contribution this year. 

Then something caught my eye.  Did you know that on Thursday they decided to change the rules of chess!  Yes indeed!  NO MORE DRAWS!   Fantastic!    This provided the inspiration for our announcement of the brutal FCC rule-making action regarding the banning of "legacy equipment."  

I knew that that headline would attract a lot of attention. And let me inform you that, according to the official rules of April Fools' Day,  if that headline did pull you in,  well that constitutes a "gotcha."  So far 1,758 people are in this category.  I thank you all.   

The comments attached to the announcement were really heart warming, even those that included profanity directed at my persona.  People recalled earlier April 1 events, like the time Pete was defenestrated from the QRP Hall of Fame.  Good times, my friends, good times!   

This was an especially happy April 1 for me, because I also launched two other highly successful operations: 

-- I teach a Zoom class.  On Thursday morning I told the students about new concerns regarding  the light hitting their eyes from the computer screens.  We were all being issued dark glasses and would henceforth have to Zoom with shades on (see above).  The students -- bless their hearts -- all agreed to do this.  

-- We are closely associated with a small company that has the word "native" in the corporate name.  As in "Native Vegetation."  Shockingly, last Thursday we got an e-mail from the Virginia Small Business Commission DEMANDING that we change the name of the company.  It seems that ANY use of the word "native" was now deemed unacceptable.  The people in this company (ALL OF THEM!) were really outraged by this.  I had to pull the plug before any legal actions were initiated!  

So, to all of you, Happy April Fools' Day!     

FCC to Ban "Legacy" Equipment and Circuitry

From the FCC Newsline: 

Out with the old

In a long-expected policy move, the Federal Communications Commission today announced that starting on April 2, 2022,  all equipment in use by the amateur radio service must comply with strict emission purity standards.  The Commission's rule-making focuses on the bandwidth of high frequency transceivers.   Starting one year from tomorrow,  amateur equipment will be limited to a bandwidth of 3500 cycles per second.   Emissions outside the bandwidth limits must be at least 100 db below the average power in the bandpass.  In effect, this means that amateur equipment must make use of the kind of "brick wall"  filtering only available from software defined equipment.   Bringing the service into conformity with commercial practices, all high frequency equipment will be on Upper Sideband.  

"No more skirts" 

An FCC official -- who requested anonymity because of "threats"  -- told Newsline that part of the motivation behind today's announcement was a desire to end the unseemly discussion of the filter "skirts" of "legacy" ham radio gear:  "Obviously there were concerns about the pejorative way many hams were referring to 'the skirts.'  This is the 21st century!  It was time to be more inclusive!" 

Audio Tinkering to Continue

The FCC official told Newsline that the Commission is not in any way attempting to discourage hams from tinkering with the "audio quality" of their commercial SDR equipment: "As long as they keep the bandwidth to 3500 Hz, they can tinker and adjust to their hearts' content," said the official.  He went on to use some of the colorful language recently heard on the ham bands: "If they want to include very low audio frequencies -- what some call 'the thunder down under' they can do that.  Or if they want to emphasize the high frequencies -- for that "Krispy Kreme" sound -- they can do that too.   All they have to do is learn how to set  the menus on their equipment. We understand that the manufacturers will soon be making available software packages that will -- with just a simple download -- set the menus according to the desires of the consumer. Uh,  I mean of the radio amateur." 

The FCC official said he thinks the ruling will actually encourage and facilitate audio tweaking. "We know this is important to modern hams.  It makes them feel connected to the days when hams actually built their own equipment.  We have noticed the development of an amazingly rich  technical vocabulary, terms like 'presence'  "muddy'  'bright'  and 'punchy' are now in common use.  Clearly the Commission would not want to stand in the way of this kind of technical advancement!"

Sinking the Boatanchors

The FCC acknowledged that this ruling spells the end for on-the-air use of  older ham equipment. "Clearly none of that old junk will meet the new requirements.  I mean these guys were literally using hunks of rock to filter their sidebands.  It was practically medieval!  Time to wake up, smell the decaffeinated coffee, and get with the SDR program OM!" 

Fears of violent push-back

The FCC official did acknowledge that there are fears of possible violent push-back from certain "sub-cultures" in the ham radio world.  "Working closely with our partners in Homeland Security, we have looked closely at the possibility of violent pushback.  Of particular concern are groups that appear to be fiercely loyal to what they sometimes defiantly refer to as 'Hardware Defined Radio.'   There are some truly frightening groups out there.  One group is called the CBLA -- The Color Burst Liberation Army.   They seem especially fond of quartz crystals and are radically opposed to the new SDR requirements.  Also of concern are groups that continue to insist on using Double Sideband Unsuppressed Phone generated by equipment using vacuum tube.  Vacuum tubes! They call them 'thermatrons.'  Again this is really medieval."  The spokesman said that the FBI is monitoring these groups, but is not very concerned because of the physical condition of many of the fanatics.  "Most of these guys rarely leave their homes.  In fact, for the last year many of them seem to have been repeating a strange "Stay in the Shack" mantra.  Many still smoke, never exercise, and now refuse to take the vaccine.  So we are not too worried, " said the FBI spokesman. 

Support from Industry and the Major Ham Organization

FCC officials tell Newsline that the major equipment manufacturers -- along with the principal ham radio organization -- were very supportive of this move, seeing it as a major opportunity to "stimulate" both sales and advertising revenue. 

Mending vs. Ending -- The Fight Against Planned Obsolescence

https://www.ifixit.com/Manifesto

We don't get a lot of mail from Darwin, Australia, so the message coming in from Phil VK8MC immediately got our attention.  When I looked into the details I realized that it was very SolderSmoke-relevant.  The Guardian article that Phil cited even mentions hobbyists tinkering with electronic devices in their sheds (that would be us!).    Phil points to the connection between our repair efforts and the struggle to save the planet: "It's not just a hobby, it's an ethical position which contributes to the well being of the planet. A higher calling indeed!" 

Here is the article Phil pointed us to:

https://www.theguardian.com/commentisfree/2021/mar/17/ending-over-mending-planned-obsolescence-is-killing-the-planet?CMP=Share_AndroidApp_ProtonMail

The poster above (which hangs above my workbench) is from https://www.ifixit.com/Manifesto. 

"Analog Man in a Digital World" by OM Joe Walsh (music video)

After seeing my last post about SDR, the dongle, the Android tablet, and the Bluetooth mouse, Bob Keller grew concerned about my, uh, stability.  Here is our e-mail exchange. 

Bill, 

Have you had a comprehensive medical evaluation recently? All this digital activity from an erstwhile analog man is a concerning symptom. <g>

I suggest listening to the following number at least once each day until you have the chance to get checked out:

https://youtu.be/6YkAnv8inQE

-- 73 de KY3R, 

    Bob Keller

Bob: 

I know.  It really is quite disturbing.  I've been getting a lot of "welcome to the dark side" messages!!!  

I am now trying to get back in the good graces of The Radio Gods.   Today I fired up the Fish Soup 10 and made two CW SKCC contacts on 40 meters.  I feel better already.  

Thanks for the song from OM Walsh.  I had heard it before but it is more meaningful to me now.  I will put it on the blog.  Others may need help too.  

Thanks for caring Bob.  

73  

Bill 

"The Dish" Turns 60

 

Thanks to Peter VK2EMU for alerting us to this important birthday.  

https://www.abc.net.au/news/2021-03-26/parkes-dish-will-assist-first-commercial-flights-to-the-moon/100027874

Part of Wright Brothers' Airplane Now On Mars with Ingenuity Helicopter

 

Very cool.  Great idea. 

https://phys.org/news/2021-03-wright-brothers-1st-airplane-nasa.html

Double Sideband Transmitter using Vacuum Tubes -- From Sweden

Tommy SA2CLC has built a really nice DSB transmitter using Thermatrons.  

FB Tommy.  

My Hodgepodged Morse: Audio Tone into the Mic Jack Creates J2A not A1A. BASTA!

In SolderSmoke podcast #229 Pete and I were discussing my rather flaky effort to turn the Hodgepodge BITX40 Module into a CW rig by injecting keyed 700 Hz audio into the mic jack (see video below). We got some very helpful responses from ND6T and VK2EMU:  

Hi Bill,

You mentioned generating CW by modulating SSB: Collins did that in their

first SSB transceivers, I believe, as did SGC, but the results were less

than optimal. The problem is that you are involving the audio chain and

modulator. You know from experience how difficult it is to maintain low

intermod there and the tone is no exception. So we end up with lots of

spurs within the filter passband and then also have the opposite

sideband suppression less than perfect. If you check your transmitted

signal with a spectrum analyzer or SDR you can easily see the nasties.

Listening to a CW signal thus generated makes it obvious unless it is

buried way down in the noise. It IS a valid CW signal (not MCW) since it

is (almost) a single signal. However, in actual operation it doesn't

work very well.

I know because I have done that. I bought one of Farhan's original

BITX40 boards and wanted to put it on CW. I ended up injecting a keyed

signal from one of the spare clocks on the Si5351 into the RF amplifier

chain (thus avoiding the above stated problems) but still had garbage

from the audio and IF stages. I fixed that by shorting out that signal

during transmit by a transistor to ground. That was documented on your

BITXhacks website: http://bitxhacks.blogspot.com/2017/02/ and on my

website: http://www.nd6t.com/bitx/CW.htm . It has been a while, eh?

...

Don, ND6T

--------------------------------------------------

Hi Bill and Pete,

With putting an audio oscillator into you hodgepodge radio, your transmission is not the same as a standard CW rig.

If we have a transmitter as described in the ARRL handbooks from the 1940's or 1950's, (or even the Michigan Mighty Mite) it is a crystal oscillator and maybe a PA tube. By keying either the oscillator and/or the final PA on and off, then we can send Morse code as ICW Interrupted Continues Wave. If we check the list of emission designators, we have A1A.

However, if we feed a tone into a SSB transmitter, then we have J2A.

At the other end it may sound the same, but because it is created in a different way, it has a different designation. 

A quick look at Part 97 shows that J2A and J2B are classed as CW, so you are in the clear. However, if you put a tone oscillator into an AM signal to send CW, then that would be classed as A2A and not classed as CW, but as MCW. MCW can be used on 6 meters and above, but not HF.

SITS.

73 de Peter VK2EMU

-----------------------------------------------------------

So I say BASTA with the J2A!  If I want to go CW, it's all A1A for me.  I dusted off my Fish Soup 10 and am now back on 40 CW with 200 mW.... A1A all the way!