I built the K9AY and in stead of fixed resistors I used a led and photo cell and varying the voltage to the led changes the resistance of the photo cell. There a device called a vractor which contains both components in one package.
It worked very well! Many 10s of dBs of noise reduction when pointed away from it. Some signals are still covered, but listening is now significantly more comfortable. A follow-up video is required, and when I am back home I will put something together!
Quality of the video production is amazing!!!! very professional.
Great job Bob....looking forward to your experience on the Ham bands,,, de Neil VA7DX
I built the K9AY and in stead of fixed resistors I used a led and photo cell and varying the voltage to the led changes the resistance of the photo cell.
There a device called a vractor which contains both components in one package.
I used three BN 303- 73 stack in series which I think works better.
but, but, but how’d it do against the pesky noise from the neighbors light dimmer?
It worked very well! Many 10s of dBs of noise reduction when pointed away from it. Some signals are still covered, but listening is now significantly more comfortable. A follow-up video is required, and when I am back home I will put something together!
@@BobHolowenko woo hoo!