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Date: | Mon, 12 Sep 2011 10:32:56 -0500 |
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Hi this is one of the Howard's, W A 9 Y B W, Springfield, IL.
How old or what other qualifications do you need to be considered one of the
other certifiable Old Timers Among Us?
Just wondered if I was there yet.
73's
Howard #3
----- Original Message
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From: "Martin McCormick" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Monday, September 12, 2011 10:12 AM
Subject: Re: For the other certifiable Old Timers Among Us
> I got one of their audio amplifier modules in 1964 for
> my thirteenth birthday and it really worked quite well. Several
> years later, it died when I transplanted it from one box it was
> in to another and one of the leads broke off flush with the
> epoxy. I think that module was made to work in a phonograph as
> the input would take a crystal pickup and the 2-watt output was
> about what you got with the one-tube amplifiers in a lot of
> record players of that day.
>
> A lot of those phonographs had a motor with a
> transformer secondary wound on the same core as the field magnet
> for the motor.
>
> Anyway, one of those modules would have probably worked
> nicely off the 6.3-volt filament winding when rectified and
> filtered.
>
> I used mine for all kinds of weird stuff and once even
> connected the audio input to a solar cell and let my whole class
> hear the fluorescent lights in the room buzz through the
> speaker. I then explained that the buzz was due to the fact that
> the lights were actually going on and off 120 times per second
> with each half-cycle of power.
>
> The amplifier was still being run from a normal battery,
> but the solar cell converted any ambient light in to sound if
> the light was varying. If it was steady light Sun light, you
> just heard a thump when you exposed the cell to it.
>
> I do remember those modules well.
> Butch Bussen writes:
>> I remember those. They were way cool!!! I had a cw monitor and
>> somewhere
>> I think I still have an am transmitter. I had one die once and broke it
>> apart, just a bunch of discreet components in epoxy.
>> 73
>> Butch
>> WA0VJR
>> Node 3148
>> Wallace, ks.
>>
>>
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