Podcasting since 2005! Listen to Latest SolderSmoke
Sunday, August 24, 2025
Brian KI7LKB's FB Modifications to the SolderSmoke Direct Conversion Receiver
Wednesday, August 20, 2025
Grant K0GDB's FB SolderSmoke Direct Conversion Receiver
Congratulations to Grant K0GDB on his FB SolderSmoke Direct Conversion receiver. Welcome to the Hall of Fame Grant! That PTO former is especially FB! Grant is a relatively new ham, making his smooth construction of this receiver even more admirable.
Grant writes:
Proof of life video! Many thanks for the helpful YouTube tutorials, everything went together pretty smoothly.
The windings are actually as close to the specification as I could get them on the nanoVNA. It's been a bit since I built that part, but if memory serves I had one fewer turn and had to do some bunching to get it to read correctly. The main difference in the PTO is that I made the former on a laser cutter from slices of quarter-inch plywood since I don't have a 3d printer. The center cyllinder is actually just rolled up paper.
A Second Aeronautical Mobile Contact with Mike KX4WC/Aeronautical Mobile
Tuesday, August 19, 2025
Coil-Making in Japan -- Manual and Automatic
I found this video sort of soothing. I liked the manual process, but the automatic process is amazing too.
Thanks to Rogier PA1ZZ for sending this.
Thursday, August 7, 2025
SolderSmoke Podcast 261: Travel, AI-Apocalypse, ARRL Award, Amplifiers (with Claude) , Transcoms, Smoke released in DR, QRP, CW, MAILBAG
Opening: Travel notes: Pete to Denver. Dean to Alaska. Bill in the Dominican Republic.
The future of the podcast. We will embrace our NIMCEL status and fight on in spite of the AI Apocalypse. Thanks to Peter VK3TPM, Hamilton KD0FNR, Sam AI7PR, Todd K7TFC and the WayBackMachine for providing backup and transfer options for the blog. Google could end Blogspot at any time.
Dean and Bill win the 2025 ARRL Technical Service Award. Thanks to Bruce KC1FSZ for the nomination. And thanks to Bill Morine N2COP for letting us know. 91 receivers completed so far!
SolderSmoke East was pleased to host Phil W1PJE, a distinguished MIT radio astronomer AND member of the SolderSmoke Direct Conversion Receiver Hall of Fame.
Dean: Amplifier design, woes, triumphs, tribal knowledge. And help from Claude.
Pete: Project X -- The Transcom SBT-3, Crossroads and Decisions.
SHAMELESS COMMERCE DIVISION: FIGHT THE AI-APOCALYPSE -- BECOME A PATREON SPONSOR.
Mailbag:
Who is the Project 326 Guy? A British engineer resident in China for last 20 years.
Steve EI5DD Ham Radio Ireland magazine. Hey -- Why no Irish DC RX builders?
Paul K9ARF -- Thanks for the very kind e-mail about SolderSmoke.
Rogier PA1ZZ -- Many nice videos and suggestions on blog backup.
Grayson KJ7UM on the EF-50 valve (thermatron!)
Bruce KC1FSZ Four DC RX builders at the Wellesley Mass radio club.
Chris KD4PBJ -- Long trip to pick up two directional beacons possibly for 630m or 2200m bands!
Alan W2AEW did a Minimum Discernible Signal test on the DC RX. FB!
Mike WN2A -- Many great comments on MDS in its various forms.
Philippe F6GUH is a FB homebrewer.
Mike EIOCL -- Always great to talk on the air with an old friend.
Walter KA4KXX -- I checked into the Sunrise net! With my HW-101! Thanks Walter.
Farhan VU2ESE -- Watched our interview with Phil W1PJE
Wednesday, August 6, 2025
Antenna Options and Views from the Terrace of SolderSmoke Shack South
CuriousMarc Fixes the HP-182C Power Supply -- But More Fun to Come!
Tuesday, August 5, 2025
Monday, August 4, 2025
ElectroBOOM! CuriousMarc Tries (and fails) to fix an old HP182C Oscilloscope -- Words of Wisdom for all Homebrewers
It will be great to see, in subsequent episodes, how Marc makes it work. It is really great to see someone present an unvarnished view of how troubleshooting really works.
Thanks Marc. 73
Here is Marc's YouTube channel:
FAKE, FRAUDULENT COMPONENTS on Ali Express
Sunday, August 3, 2025
Paul K9ARF -- SolderSmoke and a Knack Story
Bill:
Having been an occasional Solder-Smoke listener, I recently purchased your book "Solder Smoke Adventures" to read during vacation. Previously I limited reading material to technical material, but I retired two years ago and can now allow myself to read stuff just for fun. I devoured your book.
I found you and I to be kindred spirits, seeking to understand the mysteries of electricity and electromagnetic waves as we follow life's path. We're close to the same age, you're a couple years my senior.
My fascination with electronics began as a boy when my Dad and I put together a crystal receiver as a Cub Scout project. I fondly remember my father scrambling up on the roof to string a long wire as an antenna, and then listening to the Cubs ballgame in the earpiece. No batteries required!
I exhibited "knack" tendencies later as an early teen. At a local estate sale I picked up some magazines teaching basic TV repair, and a box of parts that previously was a portable B/W TV. My family was amazed when I resurrected that little TV set.
My career path went into audiovisual interests - I heard broadcast engineers made a lot of money, so I went to Milwaukee Area Tech College electronics communications program. The students there ran UHF channel 36 alongside the professionals running TV channel 10 (both pbs affiliates). On the way to getting your 1st class "phone" license, we learned 2way radio (2nd class). I found that repairing things was far more fun than pushing buttons in Master Control, so I ended up working in 2way.
While attending MATC, I met some guys who were hams - and they invited me to my first-ever hamfest. Wow. A gathering of electronics enthusiasts, many who also have "the knack". I purchased a couple of old books cheap, not knowing this would steer my life in the future: the antenna book and a 1970s radio amateur handbook, both from ARRL. Reading these books, I was intrigued by people who design and build their own equipment - the ultimate in coolness!
I guess what really kept me interested in reading your book is your desire to understand the basic building blocks of electronics - how does it work? This mirrors my personal experience. Though I have formal electronics training, my schooling was aimed mostly at troubleshooting, finding the malfunction. The understanding of why the components in a circuit are the values specified and how they produce the desired output was, like you, a lifelong learning process I still work on today.
My adventure into Amateur Radio was delayed by life activities: marriage, a house, and a child. It didn't help that I never met any hams in rural north Wisconsin. I finally met an amateur who was a VE, and Radio Shack study materials had me on the way in 1990-91.
I tested in early '91 and passed the Novice, Tech, and 5 wpm code - the VE knew that I was a career radio tech, and at his urging I passed the General written test too. My initial call was N9KQX (a horrible cw call). The next months had me work on my code speed and study the Advanced material, and later I became KF9GQ.
At that test session, I sat alongside a gentleman who was taking his 20 wpm code test (wow). A few months later he was one of my interviewers as I applied for a new job - Radio Tech for the Electric & Gas utility in Green Bay. I believe my ham radio hobby helped me land that position, which I held 30 years to retirement.
When the vanity call sign program started, I changed my call to K9ARF "amateur radio fun" (yes, I like dogs...) or "analog radio fan" - life must include a sense of humor.
In my years as a ham, I have done quite a bit of homebrewing, from repeaters and accessories for my station, to test gear and complete transceivers. My proudest projects were building W7ZOI's spectrum analyzer and a multiband KK7B based phasing transceiver using AA0ZZ's DDS synthesizer kits.
I want to thank you and the other solder smoke guys for what you do. Hopefully I will someday have an opportunity to meet you in person to share a cold beverage, laugh and tell stories of molten solder variety. Keep up the good work!!
73 de K9ARF Paul, Green Bay, Wisconsin
Saturday, August 2, 2025
Bill WA5DSS's FB SolderSmoke Direct Conversion Receiver
I forgot to send you a recording. This is what I recorded last night. I did not let it “warm up” so the stability is a little better after awhile. Also, I have a knob for tuning…just haven’t hacked off the head of the bolt yet.
I have put the receiver up for now. I am trying to get a Heathkit DX-60 on the air for New Years Eve Straight Key night. It’s the only time I attempt a straight key. Also I am amazed at how difficult it was to operate these old cw radios. No wonder I didn’t get many contacts back in the early sixties...