Ed, As you are aware this kind of thing is commercially available but the cost for a ready built switch and Bias T is considerable. You prove with a little time and a few bucks in parts a great project that fills a big need can be easily created. I must say your presentation and workflow in the video is first class. Its like you have done this all your life. Thank you Sir for showing the true spirit of Ham Radio and doing so with much class and consistency. 73's ! Kevin WA5KW
Excellent! Thank you for your video. A very timely bias-T build, as I just had a cheap commercial one go bad (very noisy). I'll be building two of these ASAP.
That’s so cool 4nradio! I’m glad you found my video helpful. You’ll have to let me know how they turn out. Send some pics. My email is good on QRZ. -Ed W8EDW
@@edwhitney1862 Will do! I will be using mine for receive only, with Wellbrook magnetic loop antennas. I suppose I can reduce the voltage rating of the capacitors since there will be no transmit signals going through the circuit.
Nice build. Phil AD5X has so many good circuits. I built his switch operated multi-impedance transformer for short vertical antennas, works great. He’s an elmer even if he doesn’t know it. 😊. 73.
Great job Ed... appreciated... one question for you... does it matter which side of the capacitor, resistor, coil or varistor is connected. ie is there an in or out +/- side to these components?
If you use RG8 size of coax. It’s only 1.37 ohms per 1000 ft (center conductor) and about .34 ohms per 1000 feet for the shield. So I am pretty sure you will have plenty of DC power at the antenna. Thanks for the nice comment! -Ed W8EDW
Ed, As you are aware this kind of thing is commercially available but the cost for a ready built switch and Bias T is considerable. You prove with a little time and a few bucks in parts a great project that fills a big need can be easily created. I must say your presentation and workflow in the video is first class. Its like you have done this all your life. Thank you Sir for showing the true spirit of Ham Radio and doing so with much class and consistency. 73's ! Kevin WA5KW
Thanks Kevin! -Ed
FB job and a very useful addition to a shack.
Thanks David! -Ed W8EDW
Love this learning tool for new hams like me. Thanks Martin KF0MOE
Thanks Martin. Ham Radio is tons of fun, isn’t it? Thanks for the nice comment and welcome to the hobby. We need more guys like you! -Ed W8EDW
Bravo ! Thanks for posting !
Thanks Alex! -Ed. W8EDW
Excellent! Thank you for your video. A very timely bias-T build, as I just had a cheap commercial one go bad (very noisy). I'll be building two of these ASAP.
That’s so cool 4nradio! I’m glad you found my video helpful. You’ll have to let me know how they turn out. Send some pics. My email is good on QRZ. -Ed W8EDW
@@edwhitney1862 Will do! I will be using mine for receive only, with Wellbrook magnetic loop antennas. I suppose I can reduce the voltage rating of the capacitors since there will be no transmit signals going through the circuit.
Many thanks Ed, just what the doc ordered.. wb7pnc
Thanks Wil. It was a fun project! Thanks for the nice comment! -Ed W8EDW
Nice build. Phil AD5X has so many good circuits. I built his switch operated multi-impedance transformer for short vertical antennas, works great. He’s an elmer even if he doesn’t know it. 😊. 73.
Thanks for the nice comment. I wish I had half of his knowledge! -Ed. W8EDW
👍Thanks for posting. Bias t is a useful accessory.
Hi Steve! Yep, I always wanted to build one. But thanks to guys comments, it made me do it. Hope to work you sometime! 73. Ed W8EDW
How many watts can you use? Full legal?
Great how to video.
Easy to follow and well thought out.
Hi Doug. Should take full legal. Been using 600 watts for 5 months now. Thanks for the nice comment! -Ed W8EDW
Great job Ed... appreciated... one question for you... does it matter which side of the capacitor, resistor, coil or varistor is connected. ie is there an in or out +/- side to these components?
Hi Arthur. No, all of the components are non-polarized. Let me know how your project turns out! -Ed W8EDW
Great video thank you.
Im curious the the maximum length of coax that could be used and still get useful power at the antenna? 73.
If you use RG8 size of coax. It’s only 1.37 ohms per 1000 ft (center conductor) and about .34 ohms per 1000 feet for the shield. So I am pretty sure you will have plenty of DC power at the antenna. Thanks for the nice comment! -Ed W8EDW