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Model T magneto only delivered 30 volts; could this refer to the model T spark coil, the universal experimenters' high voltage source of past generations? Gzuckier 18:32, 22 November 2005 (UTC) . Yes, definitely. Gutta Percha (talk) 10:31, 25 July 2008 (UTC)[reply]

pic

Good addition. Doesn't it need a key (or switch)? Gzuckier 19:07, 21 December 2005 (UTC)[reply]

duplicate info

As far as I can see, the end of the Operation section is almost exactly the same as the Spark Gaps - Construction section. I do not understand why my edit to remove the duplicate paragraphs was reverted? StealthFox 00:17, 8 April 2006 (UTC)[reply]

legality?

http://www.amazon.com/gp/customer-reviews/discussions/start-thread.html?ie=UTF8&ASIN=0262082985&authorID=A70SVUQ397Q8Y&store=yourstore&reviewID=R5CL51KHLNJS6&displayType=ReviewDetail

According to this, and other websites, Spark gap tranmitters have been illegal since the '20s. should this be mentioned? --24.252.10.228 00:20, 20 July 2007 (UTC)[reply]

Crude Technology ?

The article claims that "Marconi's ... first transmitters were extremely crude". Well yes, they were crude by today's standard, but at the time they were quite literally "state of the art". I will re-word this section Gutta Percha (talk) 09:36, 25 July 2008 (UTC)[reply]

Other type transmitters?

The article states: "With the other types of transmitter, the carrier wave could not be controlled so easily, and elaborate measures were required both to modulate the carrier and to separate the receiving antenna from the transmitting antenna."

For the time-period cited, the only other type transmitters that I'm aware of were high-speed alternators. What other type transmitters of that period generated a constant carrier wave that needed to be modulated, as opposed to simply keying the carrier on-and-off?

Also, why would it be any more complicated to separate the receiving antenna from the transmitting antenna with the "other type transmitter" than with a spark-gap transmitter?

In short, the statement is extremely vague, and it lacks citation of a reliable secondary source.Ken (talk) 20:39, 7 March 2009 (UTC)[reply]

Upon re-reading the article, I realized that the phrase "other types of transmitter" was referring to an alternator or tuned-arc type transmitter. It's true that these type of transmitters generated a continous carrier; but regardless, the carrier was keyed/modulated in a fairly simple fashion via a telegraph key; albeit, not as simple as keying a spark-gap transmitter on-and-off.Ken (talk) 21:05, 7 March 2009 (UTC)[reply]

But how does it actually work?

This article has lots of history but doesn't actually explain the basic concept behind how does a spark gap create radio waves?

Modern high-school/grad physics will tell you about AM and FM but this is just alternating current in a wire - what is the discharge got to do with radio transmission?

@@ Line 38: / Line 38: @@
 Upon re-reading the article, I realized that the phrase "other types of transmitter" was referring to an alternator or tuned-arc type transmitter.  It's true that these type of transmitters generated a continous carrier; but regardless, the carrier was keyed/modulated in a fairly simple fashion via a telegraph key; albeit, not as simple as keying a spark-gap transmitter on-and-off.[[User:Kjhalliwell|Ken]] ([[User talk:Kjhalliwell|talk]]) 21:05, 7 March 2009 (UTC)
+== But how does it actually work? ==
+This article has lots of history but doesn't actually explain the basic concept behind how does a spark gap create radio waves?
+Modern high-school/grad physics will tell you about AM and FM but this is just alternating current in a wire - what is the discharge got to do with radio transmission?