Muy interesante.Este tipo de experimentos explican muchas paradojas y mitos extraños de la radioafición. Gracias por su tiempo, compartir e interés.

Thanks Jim, this is really useful information. I think you're the only person covering it in this level of detail. I'm looking forward to the next video where we see the actual temperature increase in the ferrite... and dummy load I guess. I've often thought it strange that none of the commercial transformer designs consider cooling or passive heat transfer. I only use QRP right now , but still very interesting! 73s

@Jimscoolstuff

6 ай бұрын

Thanks for your comment. 73

Thanks Jim, Very interesting topic like most of your videos and really marvel at the innovations you come up for the jigs for the metrics you are trying to measure. Curious about one thing: When you measured the ferrite code temperatures you ran the rig key down 100% duty cycle. Wouldn't a more realistic model use the duty cycle of say a digital mode - FT8 15s on / 15s off, or for FT4 shorter on/off cycles? Also, as you point out most transformers come in a enclosed box for weather/dust protection, or the QRP ones shrink wrapped around some sort of support like a winder (yes there are some unprotected ones wire wrap tied to a support. Keep them coming and we'll keep on learning. Thanks again 73 de k1jbd, bammi

@Jimscoolstuff

2 ай бұрын

In part 2 of this video kzread.info/dash/bejne/e2WZstlvgLSWmdI.htmlsi=lN4rnKtSCqU7Hxg- I use FT8 to show temperature rise and the SWR heading toward infinity. Thank you for your comment

Thank you Jim for detailed explanation and crush reminder course is basic thermo-physics. Looking forward to part 2.

@Jimscoolstuff

6 ай бұрын

Thanks for your comment.

Very interesting, thanks for sharing.

@Jimscoolstuff

6 ай бұрын

Thanks for your comment.

Thx Jim, eye opening !

@Jimscoolstuff

2 ай бұрын

Thanks for your comment.

Good info video Jim!

@Jimscoolstuff

6 ай бұрын

Hi Terry, thanks for your comment.

Great experiment.

@Jimscoolstuff

3 ай бұрын

Thanks for your comment.

Thank you, Jim :)

@Jimscoolstuff

6 ай бұрын

Thanks for your comment.

Thank you, thank you, thank you!

@Jimscoolstuff

6 ай бұрын

Thanks for your comment.

Great info. Thank you so much Jim. Pete, wa2jmg

@Jimscoolstuff

6 ай бұрын

Thanks for your comment. 73

You are a good teacher and experimenter. Thank you. VU2RZA

@Jimscoolstuff

2 ай бұрын

Thank you for your nice comment. 73, KQ8E