K0EOO: Homebrew SSB in 1974

It is not everyday that you get on 40 meters and run into a guy who has actually built a single sideband transceiver.  But that is what happened to me today.   I spoke to Dennis, K0EOO.  He  showed an unusual interest in my BITX DIGI-TIA.  He went on to explain that he had done some homebewing himself.  In the picture (from 1974), right next to his Vibroplex bug we see his homebrew,  80-10 meter,  dual conversion,  solid state (except for the 6146 final) SSB transceiver with digital readout.  Wow.  That's a beautiful rig.  

Off his right shoulder is a homebrew 700 watt amplifier using dual 4CX250s. And behind his left shoulder we see a homebrew tube-type receiver.

Note the look of pride and determination in OM's eyes.  You can just hear him saying it: "Rig here is homebrew."

More pictures of Dennis and his rigs (including some amazing vintage gear)  here:

https://qrz.com/db/K0EOO

http://www.isquare.com/millen/members/k0eoo.htm

http://www.vintagessb.net/k0eoo.htm

Thermatrons Al Fresco: W4GON's FB HB AM Rig

I was listening to 7290 kHz with my BITX this morning and I heard W4GON say his AM rig is homebrew.  So of course I fired up the DX-100 and the HQ-100 and gave Joel a call.  Conditions were terrible but we had some support from the radio gods.  

From Joel's QRZ.com page: "It uses a pair of 6L6s in Push-Pull Class AB1 high level plate and screen modulating a 6146. I still have a lot of work to do on this rig, like building an enclosure, but it works and I just couldn't help but getting on the air with it!"  

I think it is a thing of beauty. 

Let's Give Jason NT7S Some Support!

Most of us are using Jason's code and his Arduino Si5351 libraries.   We now have an opportunity to help him continue to come up with the innovations that keep things moving forward on our workbenches.  

Consider becoming a patron.   Learn more here:  

https://www.patreon.com/NT7S

Thanks for all you do Jason!  

"So You Want To Build?" Words of Wisdom from Pete Juliano

Everything on Pete's blog is worth reading, but this article was so good that I could not resist posting a link to it here. 

Tribal knowledge from a leader of the homebrew tribe: 

http://n6qw.blogspot.com/2017/08/a-new-line-of-transceivers-difx.html

AE7KI (VK2APG), FT8, and WAS on a BITX20

I've had several very nice conversations with Gerry AE7KI (aka VK2APG).  His Australian accent sets him apart from the other Tennessee stations.  Last time we talked Gerry mentioned having competed Worked All States with his BITX20 (below). Very cool.

Gerry also alerted me to a new digital mode created by Joe Taylor.  This one is called FT8.  Gerry is using it to good effect on the 6 meter band. Here is Peter Marks' initial reaction to FT8:

http://blog.marxy.org/2017/07/new-weak-signal-mode-ft8.html

As I type, there are 252 stations monitoring 6 meters for FT8 signals.   You can see a map displaying these stations here: 

https://pskreporter.info/pskmap.html

Yellow Fever! The Cold War Origins of Juliello

How could you miss them?  That yellow was bright!  Apparently you needed high visibility to cope with the looming danger of nuclear annihilation.  The operator in the ad is obviously calm in the face of Armageddon -- note the cigarette dangling from his lips. In this 1956 Gonset ad we can see the inspiration behind what -- many decades later -- has emerged as the avant-garde ham radio color scheme known as Juliello.  The roots of this aesthetic are clearly not in the psychedelic "Mellow Yellow" hippie era.  No, this color has harder, more flinty origins.

Pete Juliano is not the only one to embrace this look.   Podcast #198 elicited this response from our friend Armand WA1UQO: 

Pete:
Don't let that Meara guy give you a hard time over the yellow Rigs.  The last three of mine have been yellow and I'm happy to see I'm not the only one with good taste.  In the picture they are from top to bottom a 30M One Watter, a 20M One Watter and of course the BITX 40.  The 20M does have a Juliano Blue cover though to give it an extra bit of class!  As always, enjoyed the podcast.
Bill,  see you at Berryville?
73, Armand WA1UQO

SolderSmoke Podcast #198 - D-104, HW-8, Juliello, DIFX, Dishal, Baofeng, MAILBAG

Bill Breshears WC3K (SK)

SolderSmoke Podcast #198 is available. 

http://soldersmoke.com/soldersmoke198.mp3

29 July 2017

Sign on a beach store:  SHACK-TACULAR! 

Noticed that EB63 amp was getting hot. Why?  

TT2, Herring Aid5, Farhan's Key:  QRPp and CW!  See?

D-104 lore -- Reading from Bill Breshear's (WC3K) ER article

Astatic  crystal/ceramic element -- disappointingly flimsy

Electret-ing it.  The G-Spot (see picture above)

Walery KB2FIV sent crystal mic element and piezo buzzer (reverse for mic!) FB

HW-8 AF filter Center Frequency Problem.  IT'S TRUE!  Fixed!  Finally. 

Shack re-org at N2CQR

Got Steve Silverman's HP 8640B Sig gen on the bench.  Required reinforcement

Pete's new DIFX

LM373 rigs.  Perhaps with that CA3020 Pete sent me. Chips Ahoy! 

Juliano Yellow? Origins of Blue?  Juliello? Julionyx? 

HB Crystal Filter Capitulation? Don't give up Pete --  just dish the Dishal!

Ceramic VXOs?  K.P.S. Kang

Crystal testers by G7WKE and Dino KL0S.  Impressive. 

Antennas and BITX40 modules.  Antennas are important.

Bill's new Baofeng HT on 440.

Fixing my Sony SW7600GR

MAILBAG

Steve Silverman alerts us to NYC radio row now in the Bronx.

Tony G4WIF on the cover of SPRAT -- Getting the Don Cameron award. FB 

Armand WA1UQO points out that the Berryville hamfest is coming up... 

Thomas KK6AHT F4HDQ writes in. 

On the air with W8NSA

Juliello.  No. 

Ralph Baer -- Video Game Inventor

Thanks to Stephen G7VFY for alerting us to this very nice video.   Ralph Baer did pioneering work in video games.   It is fun to see him in his workshop. He obviously has a variant of The Knack.  Stephen hinted at a reference to "noodling" but I didn't hear it -- perhaps Stephen meant that the whole thing was about what we'd call noodling.  I found the box on his bench labeled "Wire Wrap Materials" kind of ominous -- remember our April 1 announcement about the launch of the new "Wire Wrap Rap" podcast?

I liked Ralph's summary comment about how these days he just has fun building things.

KC8WBK's Cakepan BITX40

I talked to Paul KC8WBK last night during the regular 7277 kHz Sunday night BITX gathering (7 pm local). I like his BITX enclosure.  Very practical and economical.  It provides ready access to the circuitry.  He also has nice enclosure for the microphone and push-to-talk switch. He has more info on his QRZ.com page. 

Einstein's Knack (for Refrigeration)

https://www.wired.com/story/einsteins-little-known-passion-project-a-refrigerator?google_editors_picks=true