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Antenna coil question
Steve D
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Posts: 116
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Joined: Jul 2006
City: Lebanon, NJ 08833
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02-14-2010, 06:56 PM
I did some further checking. With the RF gen. and the tuning dial set to 1.1Mhz I connected it to first the antenna terminal and then to the grid of the 6A8 and measured the signal amplitude on my scope at the speaker voice coil. I kept the signal level low so as not to saturate the AGC. The P-P voltage level, and also the audible 400Hz tone, was 2-3 times higher when the generator was connected to the antenna terminal! I also have the chassis connected directly to house ground and the RF gen. coupled through a 0.01uf cap.

However when I touch first the antenna terminal and then the grid of the 6A8, making my body an antenna, the signal level is much higher when I touch the grid of the 6A8. This is the opposite of what using the RF gen. shows. Don't know why the difference.

Steve D
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Messages In This Thread
Antenna coil question - by Steve D - 02-12-2010, 06:21 PM
Re: Antenna coil question - by 7estatdef - 02-12-2010, 09:17 PM
Re: Antenna coil question - by Jim Berg - 02-13-2010, 01:55 PM
Re: Antenna coil question - by Steve D - 02-14-2010, 02:32 PM
Re: Antenna coil question - by Steve D - 02-14-2010, 06:56 PM
Re: Antenna coil question - by Ron Ramirez - 02-15-2010, 11:16 AM



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