Showing posts with label direct conversion. Show all posts
Showing posts with label direct conversion. Show all posts
Wednesday, December 11, 2024

An Evening Bandscan on 40 Meters using the High-School Direct-Conversion Receiver

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This video shows how useful this receiver really is.  Build one of these!
2 comments:
Monday, December 9, 2024

Listening to 40 meters on the DC Receiver -- And I Heard a Distinguished Homebrewer!

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I made the video above to show postential builders how useful our Direct Conversion receiver really is.   Late in the video (starting at 11:...
1 comment:
Sunday, December 8, 2024

"The Build Is the Initiation" -- KQ4AOP Offers Encouragement and a PTO Coil Form for Receiver Builders

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Scott KQ4AOP put a comment on a recent SolderSmoke Blog post that I found especially encouraging and apprportiate. He was writing about his ...
Saturday, December 7, 2024

My Receiver Doesn't Work Right! What Should I Do?

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An early version of our DC receiver.  Note the tuning guide under the grey tuning knob.  We prepared this for use by the high school student...
2 comments:
Wednesday, December 4, 2024

Challenge Accepted! Why we Designed the High-School Direct-Conversion Receiver the Way we Did

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Dean KK4DAS's Beautiful DC Receiver The folks over at Ham Radio Workbench have graciously accepted the challenge issued in our last podc...
2 comments:
Sunday, December 1, 2024

A 40 Meter Direct Conversion Receiver from M0NTV -- With some SolderSmoke Comments

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Nick's video appears above.  First, let me say FB Nick.   It is nice to see you making use of the AGC amp designed by Wes and Bob,  usin...
7 comments:
Friday, November 22, 2024

Tezukuri and Chappy Happy -- Amazing Videos on Homebrew Radio (from Japan?) - Another 40 Meter Direct Conversion Receiver

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So around the time we were building 40 meter direct conversion receivers, someone else was doing something similar.  His product (above) is ...
3 comments:
Tuesday, April 16, 2024

The Rad Receiver from N6GWB

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Geoff N6GWB and his eldest have produced a really wonderful receiver, and have joined the elite ranks of those who have built their own rece...
3 comments:
Sunday, February 4, 2024

Scott KQ4AOP Successfully BUILDS a Receiver (Video) -- This is the Homebrew Spirit at its Maximum

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This is just so cool.  Scott KQ4AOP has successfully homebrewed a ham radio receiver.  He used the circuit Dean and I developed (with a lot ...
12 comments:
Friday, February 2, 2024

First Light! First Signals received on Version II of Homebrew 15-10 Transceiver

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Ianis S51DX in Slovenia was the first call sign heard. Some peaking and tweaking remains to be done, but the receiver is working. Congra...
4 comments:
Saturday, October 28, 2023

Mattia Zamana's Amazing Direct Conversion Receiver

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Thanks to Ed KC8SBV for sending me this awesome video.  It looks like Mattia built this receiver way back in 1995.  The tuning indicator is ...
7 comments:
Monday, October 23, 2023

Bringing a Faulty Herring Aid 5 Receiver Into the Light -- Fixing the AF Amp Schematic Error (video)

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I picked up this old homebrew receiver in March 2023 at the Vienna Wireless Society's Winterfest Hamfest.  It is a Herring Aid 5.   I wa...
6 comments:
Wednesday, October 18, 2023

A Big Error Discovered in the 1976 QST "Herring Aid 5" Article (After 47 Years)

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Click on image for a better view.  See arrows for Q1, Q5 and the parts list. I tried as a teenager to build the Herring Aid 5 direct convers...
7 comments:
Sunday, July 16, 2023

The Super Islander Mark IV -- A Cuban DSB Transceiver Made From CFL Lightbulb Parts

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Trevor Woods also sent us this report from Arnie Coro.  It is not clear to me what difference (if any) there is between the Super Islander M...
3 comments:
Saturday, June 17, 2023

Sam WN5C Builds a Michigan Mighty Mite and Takes it to Lake Thunderbird

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  Sam WN5C built a Michigan Mighty Mite and then went the extra mile by putting it on the air from a field location.  And what a great name ...
Wednesday, June 14, 2023

Nine Homebrew Transceivers by Walter KA4KXX (and some QRP and QRO RC planes)

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  Our friend Walter KA4KXX in Orlando recently sent us this really cool "family photo" of his homebrew rigs.  Be sure to see the k...
7 comments:
Monday, June 12, 2023

Germany: Direct Conversion Receiver Success!

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Dear Bill, Please my apologies for my late update on our DCR project. We started with the course in the semester break and once the semester...
14 comments:
Thursday, June 8, 2023

Canadian Build of the Direct Conversion Receiver -- Do This in Your Town! (Video)

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This is so cool.  We have been getting reports from Daniel VE5DLD up in Regina, Saskatchewan, Canada.  Daniel is a teacher and he has been b...
Wednesday, May 24, 2023

Farhan Speaks to Students about Satellites and Direct Conversion Homebrew Receivers (audio)

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In our talks at the local high school we have frequently mentioned Ashhar Farhan, his Cubesat experience, and his use of a direct conversion...
Saturday, May 20, 2023

Farhan and Bill Fire up the sBITX and (at the other end of the tech spectrum) a Direct Conversion Receiver (video)

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At the high tech end: the sBITX.  At the low tech end: The high-school direct conversion receiver.  Check out the frequency readout on the D...
1 comment: