This was an awesome video, you actually went through the entire build process, explained what you are doing and even the theory behind it. Thank you so much for taking the time!
Great build and explanation of the science/smoke and mirrors as to how it works. Great to see the TS50 still in use what a great radio. Regards HNY vk5cz ..
Wonderful build video Jerry! I'm going to share with a recently licensed ham in my area. He's learning all about antennas and this is a good showing of what it takes to build a solid performer.
An important and largely ignored test is the loss thru the 49:1 transformer across the bands. The construction technique (twisted primary or tapped primary), spacing of turns, cross-over or no cross-over, as well as the core material will affect the loss. The "evil lair", MM0OPX, and DL2MAN youtube providers show some interesting info on this subject, as well a two methods to perform the test.
I will need to measure it and get back to you. But different wire gauge and insulation type will affect the velocity factor of the wire. So unless you use the same brand and type of wire the length may be different for you. For an EFHW the calculated length should be 468/frequency. So for 40m ssb use 468/7.23 or 64.73 feet as a starting point. You will need to trim it because of the velocity factor and will probably end up around 52-56 feet. Velocity factor is the relationship of the speed of electricity through the wire is slower than the theoretical speed through a perfect conductor.
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This was an awesome video, you actually went through the entire build process, explained what you are doing and even the theory behind it. Thank you so much for taking the time!
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Super helpful and clear. Thanks!
Thanks! Glad you enjoyed it. Subscribe so you won't miss the new videos coming soon!
Great build and explanation of the science/smoke and mirrors as to how it works. Great to see the TS50 still in use what a great radio. Regards HNY vk5cz ..
Thank you! Subscribe so you don’t miss the next videos.
Wonderful build video Jerry! I'm going to share with a recently licensed ham in my area. He's learning all about antennas and this is a good showing of what it takes to build a solid performer.
Thanks! I hope you both will Subscribe.
Excellent job explaining the build and the transformer. Thanks for sharing your knowledge!
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An important and largely ignored test is the loss thru the 49:1 transformer across the bands. The construction technique (twisted primary or tapped primary), spacing of turns, cross-over or no cross-over, as well as the core material will affect the loss. The "evil lair", MM0OPX, and DL2MAN youtube providers show some interesting info on this subject, as well a two methods to perform the test.
I am familiar with their work and plan future videos to address some of those issues. Thanks for watching. Be sure to subscribe.
How long was you wire for the end fed ?
I will need to measure it and get back to you. But different wire gauge and insulation type will affect the velocity factor of the wire. So unless you use the same brand and type of wire the length may be different for you. For an EFHW the calculated length should be 468/frequency. So for 40m ssb use 468/7.23 or 64.73 feet as a starting point. You will need to trim it because of the velocity factor and will probably end up around 52-56 feet. Velocity factor is the relationship of the speed of electricity through the wire is slower than the theoretical speed through a perfect conductor.
@@BudgetHamRadio that’s ok , I know how to figure the frequency just thought I see if you remembered off hand .thanks
31 mix covers more frequencies. 1-300 mhz. 43 mix 10-300 mhz.
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25% de pertes sur ce type de transformation malheureusement...
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Call me cheap i like store bought patoto salad from kroger, which comes free water proof plastic boxes, save a 20
Hey, if it works for you, go for it. I'm all for saving money and repurposing materials if it works. Subscribe for more videos like this one.