| Author |
Message |
    
Hotwire
Member
Username: Hotwire
Post Number: 78
Registered: 1-2005
| | Posted on Wednesday, February 16, 2005 - 7:34 am: | 
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Does anyone know how to build or know where I can find a kit or plans to build a spark gap transmitter. For those who dont know this was about the very first radio built in the Marconi days. I seen a pic of one and they seem pretty simple. I just wonder how dangerous they are to build or operate. I was readig that Marconi's generated alot of power! Like 30,000 plus watts. To at least have a model replica would be nice. A very good tool of education for youngsters and not to mention myself. Its amazing what we have acomplished in the last 100 years. |
Tech808
Moderator
Username: Tech808
Post Number: 4869
Registered: 8-2002
| | Posted on Wednesday, February 16, 2005 - 10:58 am: |
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Hotwire,
Try the links below,
making a spark gap transmitter
The Sounds of a Spark Transmitter
Replica Spark Gap Transmitter, circa 1919
Hope this helps,
Lon
Tech808
CEF808
N9OSN |
Bruce
Senior Member
Username: Bruce
Post Number: 2217
Registered: 9-2003
| | Posted on Wednesday, February 16, 2005 - 11:34 am: |
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Hotwire
Spark gap transmitters are ILLEAGAL. However as a school project and not connected to a antenna you might get away with it.
I note that in the spark gat link no mention of the FCC ban is there ........ They were outlawed in the early 1930's and replaced with CW! |
Hotwire
Member
Username: Hotwire
Post Number: 82
Registered: 1-2005
| | Posted on Thursday, February 17, 2005 - 7:18 am: |
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I didnt know that Bruce. Do you know why they were outlawed? |
Hotwire
Member
Username: Hotwire
Post Number: 83
Registered: 1-2005
| | Posted on Thursday, February 17, 2005 - 7:29 am: |
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Hey thanks Lon. Hey Bruce dont worry, I would never break the law, especially being unlicensed I will never use an amatuer band until I Get my own license. B.T.W. Some of the local hams here in my town noticed my interest in radio the other day. These older gents told me they need younger people to get involved and invited me to there next meet! COOL! |
Hotwire
Member
Username: Hotwire
Post Number: 84
Registered: 1-2005
| | Posted on Thursday, February 17, 2005 - 7:40 am: |
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A little more complicated than I thought it would be!! |
Bruce
Senior Member
Username: Bruce
Post Number: 2226
Registered: 9-2003
| | Posted on Thursday, February 17, 2005 - 9:19 am: |
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They were too broadband it is very hard to control the frequency on one ...... unlike CW. |
