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
Following my own advice to prepare for Straight Key Night, I tried to fire up my venerable Hallicrafters HT-37 transmitter. It didn't work. I quickly determined that none of the oscillators were working, so my troubleshooting focused on the power supply. Sure enough, the choke in the low voltage power supply is open. That's bad. I briefly considered giving up on this old rig. I don't really like working with tubes anymore. And this thing is very heavy -- a real beast. DX-100-like in its heaviness. It can be hazardous to your health just moving this thing around. Opening up the case is not easy. And there are nasty voltages in there.... But I have had this transmitter since 1973 or 1974. I have fixed it many times, in several countries. I got it from a member of the Crystal Radio Club when I was a kid. There are parts given to me by Pericles, HI8P in the Dominican Republic. I used it to transmit through Russian satellites. That transmitter is like an old friend. I just can't give up on it. So I need to replace or repair the choke. Is there anyone out there who has a junker out in the garage or some other source of L25? Or does anyone know of a business that could rewind the choke. Please let me know. I have decided to leave the rig on the bench until I get this thing fixed (it is too heavy to move multiple times!) It it Hallicrafters Part Number 056-300259. L25 -- 9 Henries at 135 ma. Help!
SolderSmoke Podcast #208 is available: http://soldersmoke.com/soldersmoke208.mp3 15 December 2018 Pete and the California fires Bill goes to Brooklyn 2 meter simplex A return of the trivial electric motor Audio from Mars HF Conditions -- a real mixed bag Pete looks back at 2018 -- The Year of the SSB Transceiver -- Lessons Learned Hans Summers, the QSX and the virtues of SDR W7ZOI's DC Receiver Retrospective The 1972 Solar Flare and the Vietnam War SHAMELESS COMMERCE: Buy your gifts through the Amazon link to the upper right. Consider SolderSmoke the book as a gift. Visit Pasta Pete's for cooking ideas. Don't Build It! Sage -- but unexpected -- advice from Pete. Straight Key Night approaches. Book Reviews: --"What is Real?" (Quantum Physics) -- RHdb by K6LHA. Movies "Bohemian Rhapsody" "First Man" (Not yet!) MAILBAG: Steve G0FUW Ed KC8SBV
I feel a moral obligation to put these projects on the blog every time I see one. It just seems like the right thing to do. Great work on the Pilotron. Great workshop video also.
I agree completely with the e-mojis. Wow! Cool! I love it! Hans Summers is a genius. This is almost enough to make me get with the program and embrace SDR. Hans has done what seemed to have been impossible: true homebrew with SDR.
How long will it be before NASA starts getting critical comments on the audio quality, along with very confident statements about how to change the audio settings on the menu? Well, at least they have "presence." The Elser Mathes Cup awaits a winner!
Today's SpaceX Falcon 9 launch of Farhan's Exseed Satellite was really spectacular. Congratulations Farhan! Really inspirational stuff. Now we wait to hear the bird. If I have loaded the orbital information correctly, I should have my first chance this evening. I have my antenna positioned.
"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
Do not adjust your set
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FastRadioBurst 23 here letting you know of our shortwave outings this week.
On Sunday 5th May 2024 at 0900/1300 hrs UTC on 6160 kHz and then at 2000
UTC on...
Testing Unun losses
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In his recent feedback, Richard, VK3TXD, suggested I measure the loss in
the Unun built with Jaycar LO128 core by making a second one and wiring
them back ...
May 2, 2024. The Choices We Make.
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There is absolutely nothing exciting about today's blog other than to share
a bit of musing I did yesterday.
The occasion was sitting at the Board and C...
An Inline RF Step Attenuator for QRPp Work
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I don’t need to explain the attraction of low power operation; if you’re
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A 51S-1 Restoration Story
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I came across my Collins 51S-1 in a big junkyard in Ankara, Turkey around
2012. It was in a pile with a lot of other electronic scrap, probably from
one o...
New QRP Cluster Online 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
QRP operations. Have a look and I hope you will enjoy...
3D Printing The Hadley 114mm Newtonian Telescope
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Yes, we’re building a 3D Printed Newtonian Telescope called Hadley. It’s
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3D printed project boxes
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I have been busy with some other things that have kept me away from
electronics projects for quite a while. Now I can get back to them, but
realize I n...
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
Draws just 24 mA of current 90 dB dynamic range, 80 dB close-in dynamic
range 3D ...
Adding Enclosure to your sBitx Boards Order
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The early buyers of the sBitx board set who bought it for $270 USD might
want to also add the enclosure (box) for in the kit. What you will now get
is a f...
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
computers – l...
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A Simple Speech Processor
(For QRP/SSB Homebrew Transceivers )
Over the last few weeks I had been thinking to build a small AF speech
processor to add to...
A New Look for your uBitx!
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Adding a "Cool Blue" Display to your uBitx!
The standard "green background" with black lettering frequently reminds me
that I suffer from Chronic seasickn...