Howard, I don't have a one but wished I had saved them.  73
Ed   K7UC

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From: "Howard Traxler" <[log in to unmask]>
Sent: Sunday, September 11, 2011 3:09 PM
To: <[log in to unmask]>
Subject: Old Timers:  Wanted, Braille Technical Press

> Speaking of Bob Gunderson and his BTP, does anyone happen to have any of
> those old magazines?  I'd sure like to borrow or buy them.  Either Braille
> or recorded.  I had several years of them which I lost in one of my recent
> moves.  Watsa someone, please?
>
> Tnx.
> 73, The other Howard, WA9RYF
>
> ----- Original Message ----- 
> From: "Ed Malmgren" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Sunday, September 11, 2011 2:42 PM
> Subject: Fw: For the other certifiable Old Timers Among Us
>
>
>> Mike,   I am one of which you mentioned, and O T.  I am still using one 
>> of
>> those circuits from The B T P andam using it for antenna direction across
>> the rotor meter.  I think I built it in about 61.  Dam, I'm getting old
>> hi.
>> 73
>> Ed   K7UC
>>
>> --------------------------------------------------
>> From: "Mike Duke, K5XU" <[log in to unmask]>
>> Sent: Sunday, September 11, 2011 12:05 PM
>> To: <[log in to unmask]>
>> Subject: For the other certifiable Old Timers Among Us
>>
>>> For those list members who read Bob Gunderson's Braille Technical
>>> Press, do you remember the advertisement for Grand Central Industries?
>>>
>>> One of the items this company sold was a brand of solid state gadgets
>>> such as very low power audio amplifiers, AM broadcast band part 15
>>> transmitters, etc. The manufacturer was Round Hill Industries.
>>>
>>> This was long before single chip circuits. These devices were
>>> assembled from individual components, and then fully sealed in epoxy,
>>> with bare wires protruding from the edges for connection to the power
>>> sourse, speakers, etc.
>>>
>>> They were literally the size of an ice cube, which for the late
>>> 1960's, was indeed minuscule. While I never confirmed it other than by
>>> hearsay, someone told me that the company did in fact use ice trays as
>>> the mold for the sealed units.
>>>
>>> One of the gadgets this company made was a "CW Monitor." The purpose
>>> of this monitor was to provide the side tone which we now take for
>>> granted, but which did not come with most rigs of the day, and was an
>>> add on option for only a few transceivers.
>>> You connected two wires to a small speaker, two others to a single D
>>> cell, and another to a few feet of hook up wire, which served as the
>>> antenna.
>>>
>>> Then, when you transmitted CW, the thing would squawk, thus giving you
>>> a means of monitoring what you were sending.
>>>
>>> Yesterday, I discovered a box of odds and ends left from the equipment
>>> of my late friend, K5ZFM.
>>>
>>> In the bottom of that box was one of the Round Hill CW Monitor
>>> modules, still attached to an old portable radio speaker and battery
>>> holder. I will clean it up and try it out later this week.
>>>
>>> The one that I bought on his advice as a Novice in 1969 gave up the
>>> ghost many years ago.
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> Mike Duke, K5XU
>>> American Council of Blind Radio Amateurs