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Old October 1st 06, 06:24 PM posted to rec.radio.amateur.homebrew
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First recorded activity by RadioBanter: Sep 2006
Posts: 101
Default VLF from the amp

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On Sat, 30 Sep 2006 00:12:10 +0300, Ceriel Nosforit
wrote:

Hehe. Well yeah, I figured as much, but why doesn't it work? Too high
impendance? Why is that something the amp can't handle, if I maybe resist
the urge to crank it up to eleven?

I'm approaching the issue from the engineering perspective, but I don't
have much knowledge in this particular field. If you can enlighten me I'd
be much obliged.


------------ REPLY FOLLOWS ------------

Here's what is working against you:

1. Frequency is too low for the power level you are using. At higher
frequencies in the shortwave region, 80 watts is plenty to talk around
the world, but not down in the audio range.

2. If you did have lots of power, you would still need an efficient
antenna. Unless you own an entire county, you won't have enough room
to put one up.

The US military does use very low frequencies in the audio range to
communicate with submarines world wide, but they have a pretty good
budget for it. :-)

It can be done, but not by you or me.

Bill, W6WRT
 
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