Subject: | |
From: | |
Reply To: | |
Date: | Wed, 14 Sep 2011 16:05:14 -0500 |
Content-Type: | text/plain |
Parts/Attachments: |
|
|
Great, that's a relief!!
Howard #3
----- Original Message -----
From: "Mike Keithley" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, September 14, 2011 11:22 AM
Subject: Re: For the other certifiable Old Timers Among Us
> You're probably OK if you don't worry about it.
>
> ----- Original Message -----
> From: Howard, W A 9 Y B W <[log in to unmask]>
> To: [log in to unmask]
> Date: Monday, Sep 12, 2011 07:33:40 AM
> Subject: Re: For the other certifiable Old Timers Among Us
>
>>
>>
>> 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
>>
>> -----
>> 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.
>> >>
>> >>
|
|
|