Very nice Chris , I use to use antique 1920s designs from Roger Horton in Silver Springs, NV and even with a simpler single variocoupler system using a 250 ft long wire antenna, audio amp and a good trap and an outboard antenna tuner with simple house AC ground I have logged 32 states. I have even logged several low power stations in the day out to 100 to 150 miles, 3 were only running 250 watts class C , big thrill I also use a BC Band receiving loop in the ground side of the circuit as sort of a traveling wave trap and it works excellent, eliminates having to have more than 1 trap You tune the loop until you knock down the local power house about 75 to 80 percent then start radio tuning for other weaker stations, I sold all my gear 3 years ago to go RVing but those plans did not pan out and regret losing my prize crystal radio station, glad I caught your video as I am now determined to get back on, What a beauty you have there- all the best- J
Excellent presentation Chris, love the gear you've built up. Impressive sounding audio quality and loved the demonstration on inductor coupling. Congrats and 73, Doug - NO1D
The trick to this radio's excellent selectivity is the Band Pass Filter, located between the Antenna Tuner Coil and the Detector Coil(s). It has a very high "Q" factor, because of low RF resistance at these frequencies. Highly recommended for your next set....
Just like many others, I really enjoyed this video. I am sure this project has taken many hours of effort and it has paid off well for you. Thanks for including a look at your schematic which I have studied pretty carefully. I think I found a minor issue in it, though. I think you have the L and H labels swapped on the band select switch for the contra-wound coil in the schematic.
Wow Joseph, I'm impressed. I DID mislabel the schematic! Contra coils in series (coils in phase) is the low band (more inductance), and contra coils in parallel is less inductance, so higher band. Good eye. I labelled my radio after it was built, and it was obvious which of the two switch positions was low vs. high. But the schematic has been corrected... You get the prize!
@@christopherwendling4519 Would you mind if I tried to clear up some of your schematics and share them with a Crystal Set Radio Group on Facebook? Of course, I would credit you as the original author and include a link to your video.
Hi, excellent work, well put together presentation. I would love to replicate your build. Could you please give us the build diagram since the one in the video is impossible to read? Tnx.
You know, you could have turned the volume "down" and we could still hear the audio differences in your demonstration. Tho the way you decided...we could barely hear your voice over the radio. OMG
Same material, but the "soft" polystyrene has tiny are bubbles blown into it intentionally, typically used for drinking cups. I buy the polystyrene forms (4" sewer couplers) at Home Depot. Make sure they are the white polystyrene material.
@@christopherwendling4519 Sewage and water piping materials are usually polyvinylchloride (PVC) rather than polystyrene. Unless special ordered, I've not been able to find polystyrene plumbing components at a "hardware" store. In the larger sizes, the low pressure application pipe is usually a foam core sandwich for weight reasons. The foam reduces linear weight while the PVC clad lends its toughness to protecting the core.
Thank you for this video. Very interesting and thought-provoking. I was amazed to see the distance between the coils… and I was impressed with the band pass filter. Your presentation has been inspiring for me as an inexperienced radio amateur trying to build my own low powered gear. Best wishes from New Zealand. ZL3ABX.
I have a bow and arrow with a blunt point. I tie fishing line to the arrow, and shoot it over the tree.(line payed out with a casting reel). Then I use that fishing line (as a leader line) to pull a heavier line over the tree. Finally, I use that heavier line to pull the antenna wire up and over.
Obtained at Home Depot ... Drainage plumbing fittings... sawed round sections off. Make sure it's polystyrene it's the best, although polyethylene and PTFE are also pretty good.
Thank you for sharing! This is one of the best Crystal set-ups I've ever seen. Great job!!
Very nice Chris , I use to use antique 1920s designs from Roger Horton in Silver Springs, NV and even with a simpler single variocoupler system using a 250 ft long wire antenna, audio amp and a good trap and an outboard antenna tuner with simple house AC ground I have logged 32 states. I have even logged several low power stations in the day out to 100 to 150 miles, 3 were only running 250 watts class C , big thrill I also use a BC Band receiving loop in the ground side of the circuit as sort of a traveling wave trap and it works excellent, eliminates having to have more than 1 trap You tune the loop until you knock down the local power house about 75 to 80 percent then start radio tuning for other weaker stations, I sold all my gear 3 years ago to go RVing but those plans did not pan out and regret losing my prize crystal radio station, glad I caught your video as I am now determined to get back on, What a beauty you have there- all the best- J
Thanks James- hope you can getback on- your technique for pulling in the weak ones behind the flame throwers is very good!
As a navy Electronics Tech I truly appreciate what was done here.
The best constructor on UA-cam.
Well done Chris, a very impressive crystal radio receiving station and excellent demo... Best wishes from England...David M0DAD
Good results and interesting circuit!
Next try made earth battery powered TRF receiver.
Thank you for showing the coupling effect and the wave trap nice set .
Excellent presentation Chris, love the gear you've built up. Impressive sounding audio quality and loved the demonstration on inductor coupling. Congrats and 73, Doug - NO1D
Chris, how about a copy of your schematic since the one in the video is to hard to make out.
Also all the info about the coils? Thumbs-Up!
Well done, excellent !
I'm looking forward that you are so kind to post next videos on the matter.
Bravissimo.
Excellent presentation!
Beautifully crafted, I love the yellow switch! 😂
My favorite switch also!!!
Wow perfect in every stage
I would really like to have the schematic on this Set.
This video and the article was really the ones that made me interested in radio from the start
The schematic is at 13:40 in the video. Quality not so good, so I'll try to put a better schematic on my website.
It would be interesting to hear more in depth about filtering, and how to increase over all efficiency.
The trick to this radio's excellent selectivity is the Band Pass Filter, located between the Antenna Tuner Coil and the Detector Coil(s). It has a very high "Q" factor, because of low RF resistance at these frequencies. Highly recommended for your next set....
That is fantastic I just very basic crystal radio what a difference I don't have knowledge to do this
Wow ... that's impressive!
How do the cone speakers work? Are They small speakers with paper cones or something else? Are they high impedence?
Hey Chris nice video
I know tuggle has heard 5500 miles
But is that the record on am band using a crystal radio ?
73 thanks
Wow. This is really incredible. Great presentation, too. I bet you were fun to grow up with. Did you and your brothers all do this together? 🙂
He doesn't have any brothers. 6 sisters though, of whom I am one
Why not use a bridge diode -- twice the output -- I am I correct.?
Very Nice.
Impressive
Just like many others, I really enjoyed this video. I am sure this project has taken many hours of effort and it has paid off well for you. Thanks for including a look at your schematic which I have studied pretty carefully. I think I found a minor issue in it, though. I think you have the L and H labels swapped on the band select switch for the contra-wound coil in the schematic.
Wow Joseph, I'm impressed. I DID mislabel the schematic! Contra coils in series (coils in phase) is the low band (more inductance), and contra coils in parallel is less inductance, so higher band.
Good eye. I labelled my radio after it was built, and it was obvious which of the two switch positions was low vs. high. But the schematic has been corrected... You get the prize!
@@christopherwendling4519 Would you mind if I tried to clear up some of your schematics and share them with a Crystal Set Radio Group on Facebook? Of course, I would credit you as the original author and include a link to your video.
@@josephwatson4616 I wouldn't mind at all Joseph! Thank you very much. Send me a link when you complete it...
Outstanding!
Are there a schematic?
Hi, excellent work, well put together presentation. I would love to replicate your build. Could you please give us the build diagram since the one in the video is impossible to read? Tnx.
Yes. Please see: www.itrac.com/fore/images/IMG_2753.jpg for Hi-res schem.
You know, you could have turned the volume "down" and we could still hear the audio differences in your demonstration. Tho the way you decided...we could barely hear your voice over the radio. OMG
Very cool! Where do you find the polystyrene material for the coil forms? Isn't polystyrene really soft?
Same material, but the "soft" polystyrene has tiny are bubbles blown into it intentionally, typically used for drinking cups. I buy the polystyrene forms (4" sewer couplers) at Home Depot. Make sure they are the white polystyrene material.
@@christopherwendling4519 Sewage and water piping materials are usually polyvinylchloride (PVC) rather than polystyrene. Unless special ordered, I've not been able to find polystyrene plumbing components at a "hardware" store. In the larger sizes, the low pressure application pipe is usually a foam core sandwich for weight reasons. The foam reduces linear weight while the PVC clad lends its toughness to protecting the core.
Hi, unfortunately Ben H. Tongue's site went away with Ben H. Tongue. Happy New Year to you.
That's a shame. That site was a gold mine. The loss of Ben Tongue was a very significant loss to our hobby.
Yeah and crystal radio web sites are all old and out of date
Emails don't work etc
Thank you for this video. Very interesting and thought-provoking. I was amazed to see the distance between the coils… and I was impressed with the band pass filter. Your presentation has been inspiring for me as an inexperienced radio amateur trying to build my own low powered gear. Best wishes from New Zealand. ZL3ABX.
Totally puzzled me how you managed to bring the wire up the tree so high? Use a drone?
Or you just throw it up? 90feet? I am amazed.
Simply ask someone young and strong to clime up the tree. It really is that simple.
I have a bow and arrow with a blunt point. I tie fishing line to the arrow, and shoot it over the tree.(line payed out with a casting reel).
Then I use that fishing line (as a leader line) to pull a heavier line over the tree. Finally, I use that heavier line to pull the antenna wire up and over.
I want to build this exactly do you have information written or can you give me help. I have built electronics projects before.
Where do you get polystyrene tubing?
Obtained at Home Depot ... Drainage plumbing fittings... sawed round sections off. Make sure it's polystyrene it's the best, although polyethylene and PTFE are also pretty good.
@@christopherwendling4519 That's interesting. I was not aware they sold polystyrene pipe. We'll have to keep our eye out for that one.
👍👍👍
ur the fucking goat
Very good setup congratulations,kg4mqj.73