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Wednesday, May 25, 2022
HF Bandsweep with the Hammarlund HQ-100 (video)
Tuesday, April 19, 2022
Young Jean Shepherd Gets Hung-Up On Ham Radio
Oh man, we've all been there: OBSESSION with ham radio. Shep went over the top and didn't sleep all weekend when his homebrew transmitter was finally neutralized and started to put out a decent signal on 40 meter CW.
One of my favorite lines in this episode is about how, before the neutralization, the transmitter had had so many parasitics that it would continue to transmit for two hours AFTER Shep turned it off, "and all on the wrong frequencies."
I found this while searching for other Shep references to Johnny Anderson, the guy who built the TV receiver. Please let me know if you know of any other Shep references to Johnny.
Here is the program. Skip ahead to 20:50
EXCELSIOR!
Thursday, April 14, 2022
"Patrolling the Ether" WWII Video on Radio Direction Finding Efforts
I heard about this video while trying to track down information on John Stanley Anderson's 1939 television receiver. "Patrolling the Ether" is kind of hard to find. It is not really on YouTube. But there is a good BARC Vimeo video about WWII RDF efforts that includes at the end the full "Patrolling the Ether" video.
Here it is:
Thanks to BARC and to Brian Harrison for putting this together.
In the video, they discuss the invention of the Panadaptor by Dr. Marcel Wallace F3HM during World War II. I set up a very crude Panadaptor using Wallace's principals:
https://soldersmoke.blogspot.com/2019/05/diy-waterfall-quick-and-easy-panadaptor.html
Monday, February 28, 2022
LA6NCA Designs and Builds a Very Hybrid 80 Meter Transmitter (Si5351 and a 12A6 Tube) (Video)
Sunday, February 27, 2022
VK3HN's Amazing Summit Prowler 9 Homebrew Transceiver - A Masterpiece of Miniaturization (VIDEO)
Saturday, January 1, 2022
Straight Key Night 2021/2022 (Videos) -- Happy New Year!
Saturday, December 18, 2021
On 17 meter CW from Santo Domingo with a uBITX
The fishing pole worked well, but I operated with fear that it would fall or that the neighbors would complain). Today I got on 17 CW with the uBITX (more power than the SST), put it on 17 CW and promptly worked W4A, a special events station commemorating E. Howard Armstrong. Turns out that today is Armstrong's birthday. TRGHS.
On the Reverse Beacon Network my CQs were heard by KO7SS in Arizona (very cool skimmer station at 8100 feet!) and by W2NAF (interesting operations in Antarctica, Svalbard and Virginia Tech).
Wednesday, October 13, 2021
SolderSmoke Podcast #233: PIMP, Boatanchors, Novices, MMM, Heathkits, DC Receivers, Mailbag
SolderSmoke Podcast #233 is available.
http://soldersmoke.com/soldersmoke233.mp3
Travelogue: Cape Cod. SST. Marconi Site.
The WFSRA: The World Friendship Society of Radio Amateurs.
Pete's Bench:
The Pimp.
The NCX rig.
The Collins.
The many DC receivers built worldwide.
The parts shortages are real! Several key radios on hold. Si5351 sub.
Talk to G-QRP convention
Bill's Bench:
FT-8. Not for me. I tried it.
Novice Station Rebuild.
Globe V-10 VFO Deluxe.
Selenium rectifier removal CONTROVERSY?
Not crazy about my Novice station. Not crazy about CW.
Mate for the Mighty Midget. Again.
Mike W6MAB -- Detector problems LTSPICE Check
One more mod for MMM RX. Ceramic filter at 455.
Dropped screw inside tubular cap on Millen 61455 transformer.
Talk to the Vienna Wireless Society
Thinking of a Moxon or a Hex beam.
BOOK REVIEW Chuck Penson WA7ZZE New Heathkit Book. http://wa7zze.com
Mailbag
-- New SPRAT is out! Hooray!
-- Todd K7TFC sent me copy of Shopcraft as Soulcraft. FB.
-- Dean KK4DAS building an EI9GQ 16 W amp. FB.
-- Jack NG2E Getting close on Pete's DC receiver.
-- JF1OZL's website is BACK!
-- Tony K3DY sent link to cool books.
-- Sheldon VK2XZS thinking of building a phasing receiver.
-- Peter VK2EMU has joined the WFSRA. FB!
-- Ned KH7JJ from Honolulu spotted the Sideband Myth in the AWA video.
-- Chris M0LGX looking at the ET-2, asks about the variometer.
-- Pete Eaton Nov 64 anti HB rant in november 1964 QST. Wow.
-- Josh Lambert Hurley spreading FMLA stickers in the UK. FB
-- Stephen VE6STA getting ready to melt solder.
-- Got a great picture of Rogier PA1ZZ back on Bonaire.
-- Farhan reading the manual of Hans's new digital rig.
-- Paul G0OER wonders if FMLA getting ready to move on 5 meters.
Wednesday, September 22, 2021
Some Initial Thoughts on FT-8
-- This is really interesting technology. Three cheers for Joe Taylor and colleagues. This mode would obviously be very useful for fast, weak signal contacts as are needed on meteor scatter or EME.
-- FT-8 does give you the chance to work DX that would have been difficult on other modes.
-- Chinese hams showing up on FT-8 -- more than other modes.
-- I think FT-8 is good for hams who just want to have a lot of "contacts." It is definitely not for the rag-chewer.
-- I find it it kind of cold and antisocial. More like a computer game than ham radio. A bit like sending short text messages on a cell phone.
-- I think FT-8 contacts are in some ways more meaningless than a "59!" contest exchange -- unless you look, you don't even know the report you got, nor do you know the report you sent.
-- For me it is more impersonal than CW. But at least we let the technology decode the characters instead of having to memorize dot and dash sounds. In a phone contact you can hear the other person's laugh. In a CW QSO, you hear him key "HI HI." FT-8? No laughter at all.
-- With PSK Reporter, FT-8 gives you a good feel for how propagation changes during the day. But it is kind of like 2-way WSPR. As with WSPR, it is -- at first -- fascinating, but then it loses its charm. Yes, everyday you are heard in Belgium.
-- It seems to be getting kind of crowded. The passband for FT-8 contacts is often full, and it is hard to find an open space.
-- There is little opportunity for the homebrewer. I hooked it up to my homebrew transceivers and had a small bit of fun using a 2N3904 as a switch triggered by the RTS signal for T/R. But that's about it.
-- I get the sense that the ham himself is not really needed in FT-8. This mode seems like it could easily be automated or run by an AI. Just tell it to go out there, make a lot of contacts and log them. Maybe prioritize the DX you "need." Has this already been done?
-- After a session with FT-8, I had a really nice 17 meter ragchew SSB QSO. That SSB contact left me happy. The FT-8 session was a bit like spending time on social media or a video game. It left me edgy. FT-8 made me appreciate phone even more.
But hey, to each his own. A lot of people really like FT-8. I hope they have fun.
Saturday, July 17, 2021
Mythbuster Video #7: Bandswitch, Reverse Polarity Protection, CW with Clarifier Offset
I have the speaker mounted on the front of the board. I kind of like it like that. I now have a bandswitch, and reverse polarity protection (no more living dangerously for me). That Yaesu VFO clarifier circuit might prove useful should I decide to give this rig CW capability. I once again find myself thinking that I might never put this in a metal box. Frank Jones had the right idea.
Saturday, June 26, 2021
SolderSmoke Podcast #231 -- Travel, SST, Mythbusting, Filters, TIAS, NanoVNAs, DC RX in SPRAT, Drake A Line, Spillsbury, STICKERS! Mailbag
Friday, June 18, 2021
Jean Shepherd on CW, and Strange Propagation -- QRP!
Monday, June 14, 2021
Santo Domingo Shack on 12th Floor Balcony -- SST QRP CW
Sunday, May 30, 2021
QRP - QRP Contact from Dominican Republic
Saturday, May 22, 2021
VK3HN's Homebrew 30 Meter SST QRP Transceiver
Friday, May 21, 2021
AA7EE's Amazing Homebrew SST QRP Transceiver
Look at that rig. It is truly a thing of beauty.
I was very pleased to see Dave AA7EE's comment on my SST rig. This caused me to search his site for his SST article. And wow, it is an SST treasure trove. Lots of discussion of the circuit and mods. And Dave's usual wonderful photography and videography.
Check it out.
https://aa7ee.wordpress.com/2016/09/09/a-scratch-build-of-n6kr-and-wilderness-radios-sst-for-20m/
Thanks Dave!
Thursday, May 20, 2021
The SST QRP Transceiver
https://qrpbuilder.com/wp-content/uploads/2017/04/sst_manual_042217.pdf
Friday, May 14, 2021
The Homebrew Spirit of the Radio Amateur
Monday, March 22, 2021
My Hodgepodged Morse: Audio Tone into the Mic Jack Creates J2A not A1A. BASTA!
Don, ND6T
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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
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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!