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I wrote in that the DHD is powered by a cold fusion reactor. This information comes directly from an episode of SG-1. --98.207.154.111 00:19, 4 March 2009 (UTC)

Although, I do prefer "unknown" to the previous entry: "power crystals" --98.207.154.111 00:24, 4 March 2009 (UTC)

You'd have to specify which episode it was revealed in for the information to be included in the article. —Jaymach Ral'Tir (talk) 00:30, 4 March 2009 (UTC)

Thanks, Jaymach. How should I do that? In other words, where should I put that information? --98.207.154.111 07:33, 4 March 2009 (UTC)

To cite things in an infobox, it's a tad more complicated than doing it in the article itself sadly. What you have to do is type {{Ref|<ref name="whatever">''[[Stargate SG-1]]'' "[[Episode name]]"</ref>}} and then add a reference bit at the bottom. If you just want to state which episode it was in on the talk page, however, then I'd be more than happy to change it over for you so you know how to do it in the future. —Jaymach Ral'Tir (talk) 07:50, 4 March 2009 (UTC)

Okay, I hope this information is compelling enough. In the season 2 episode "The Fifth Race", Jack gets the knowledge of the Ancients downloaded into his brain. When a gate malfuntion leaves Carter and Teal'c stuck on an alien planet with two suns, Jack draws a diagram to explain how to fix the DHD. Here's the image on Gateworld.net http://www.gateworld.net/gallery/displayimage.php?album=47&pos=368 Even though Jack can only speak Ancient at this point, he can still write in English and explains the workings of the DHD in great detail. The final step in the process, step "E", reads, in part: "Now you are ready to turn the power on again. The DHD has a cold fusion reactor core. It will take a few minutes to be fully charged" --98.207.154.111 23:30, 5 March 2009 (UTC)

I've went and added the reference for you. Feel free to look at what I've done here. I also added some other information, but you can feel free to ignore that. —Jaymach Ral'Tir (talk) 23:40, 5 March 2009 (UTC)

Alright, cool. Nice work. The record's been set straight. --98.207.154.111 00:25, 6 March 2009 (UTC)

pegasus dhd used in milky way Edit

in the last episode of stargate atlantis, the wraith brought a pegasus stargate and dhd which overrode the earth stargate. how was mckay still able to dial the milky way alpha site with a pegesus dhd that had the glyphs for the pegasus dhd?

Being the all-knowing Dr. McKay that he is, he was able to "Recalibrate the D.H.D. for local co-ordinates." I really don't know how the symbols worked interchangeably and how he knew exactly which ones to press though.—Anubis 10545 05:47, 7 March 2009 (UTC)
There was a brief shot of the reconfigured DHD, and it looked like the symbols had changed to the Milky Way glyphs, though the glyphs on the gate itself were still from Pegasus. — BrotherFlounder 23:44, 26 April 2009 (UTC)
Eh, on a second look, it looks like they're still the Pegasus glyphs. Guess we've got to chalk that one up to Rodney being a genius, or something. — BrotherFlounder 01:20, 27 April 2009 (UTC)
Was thinking about this earlier for some reason after watching SGU. From the article on the Gateship DHDs: "However, it may be that the ships possess a sort of 'universal' DHD that tailors itself to the gate system in question, as a gateship from Atlantis has been seen activating a gate from the Milky Way at the McKay-Carter Intergalactic Gate Bridge." - I wouldn't be surprised if that's technically true of all DHDs, but rather, it has to be activated (or "recalibrated") for non-gateship DHDs. That would also suggest that there's already a standard "system" for converting one galaxy's glyphs to another, since they already had to be able to do it on the Gateship. He probably was able to use the same system to know which glyphs to hit. Cmantito (talk) (Contribs) 01:14, October 6, 2009 (UTC)
DHD is just a big computer. You can reprograme it --╔▲╠☼╚╡∩║▀⌠⅜⌡├┤∩ (talk) (Contribs) 07:13, October 6, 2009 (UTC)

Memorizing addresses? Edit

There's a problem regarding this capacity. Zelenka claimed the DHD stored the x last dialed worlds' stargates, but it just flies in the face of other plots which have been solely dictated by people evading pursuits by gating to other worlds, like Aiden Ford having to memorize the gate address, or again the same Ford jumping worlds once he was addicted to Wraith enzymes. Even tracking the NID would have been much easier, since all that was needed to narrow the scope of search of their extrastellar outpost would have been to read the crystal in the DHDs of the worlds where NID activity was suspected, etc. That said, the contradictions seem to be between older episodes and the one wherein Zelenka makes this statement. Could it be that Earth discovered something about control crystals recently? Does this explanation even work? --Mister Oragahn (talk) (Contribs) 00:45, November 3, 2009 (UTC)

The problem was that the DHD stored around 50 addresses so if ford had gated 2 times to lose the expedition there would be 2500 addresses to check outBlueSquadron (talk) (Contribs) 06:07, April 21, 2010 (UTC)

Goa'uld DHD Edit

Ba'al used his own DHD in Continuum, wasn't it goa'uld desing? --Abdul Hasan (talk) (Contribs) 19:33, February 27, 2010 (UTC)

Likely it was. See Auto-dialer. —Anubis 10545 (talk) (Contribs) 20:04, February 27, 2010 (UTC)

Oh, I seeAbdul Hasan (talk) (Contribs) 15:10, March 2, 2010 (UTC)

Pegasus DHD? Edit

Here a few problems in the Pegasus DHD section:

  1. The Stargate's makes the swishing/buzzing sound not the DHD.
  2. A Pegasus DHD is not faster in dialing than a Milky-way DHD, In fact it's slower becuase the light's on the gate rotate backwards or forwards before the chevron can lock the seleced constellation symbol in place (like a rotary dial phone), while a Milkyway chevron just lights up when pressed (like a push-button phone). Unless whoever wrote that was comparing the Pegasus lights rotating to the Milkyway's Inner-ring when dialing manuly, which is a flawed comparrison since a Pegasus Gate cannot be manualy dialed.
  3. The Pegasus coordinate system is the same one that is used in the Milkyway's dialing system, It's just a differant set of star constellations which are used for the address's on the gate. Awar 16:31, March 15, 2010 (UTC)

Point of Orgin Edit

On every DHD photo is missing Aquila glyph and there is another symbol which look like Earth's point of orgin. On every DHD symbol is the same.

Giza DHD Edit

The article claims that the Gizah DHD was rediscovered by the German government during WW2, but I don't recall any such thing from any episode. I remember an episode in which it is stated that the Soviet government took it from Germany after WW2, implying that it was recovered by an expedition working for Germany (or a German state) any time before the end of WW2.


This article also contradicts the article on Germany.

This may have been shown in Stargate Origins
Hoylemd (talk) (Contribs) 15:50, June 24, 2019 (UTC)

A Month to Complete? Edit

It's said in the article that the DHD undertakes calculations that take a month for the SGC computers to complete. At what point was this stated? The three episodes referenced were Children of the Gods, Solitudes and Avenger 2.0. Since I don't remember seeing it in Avenger 2.0 I'd assume it was in one of the other two.


Both are however based in 1997. Between 1997 and 2011, even assuming no alien technology was involved, computer technology has gotten a lot faster and you'd expect the SGC would have updated their computers at least once. So it seems unlikely that this information is still correct. Perhaps therefore it should be rewritten with the qualifier "In 1997, these calculations took the SGC..." or something similar. 58.110.182.64 09:15, June 13, 2011 (UTC)

Milky Way DHD section Edit

"Another method for reaching any stargate is to use a dialing computer like Stargate Command- however, this could lead to unforseen side effects such wormholes traveling through stars or solar flares. DHDs are designed to prevent these incidents from taking place by only allowing access to certain stargates from certain locations throughout the galaxy."

I believe this is incorrect, the routines to prevent going through solar flares/stars are programmed into the gates themselves. Iirc, in the episode Red Sky, Carter says that the gate wouldn't dial K'tau at first and she disabled some routines to make it work, only realising when on the planet that those routines were meant to prevent the wormhole from going through a star.

178.85.121.222 09:45, September 9, 2012 (UTC) inspiratieloos

Is this fan-made speculation? Edit

The first paragraph in the "Milky Way DHDs" is: The Milky Way's DHDs have sparked numerous discussions as the design and operation of the device has resulted in contradiction. In the Milky Way, the Dial Home Device contains 38 of the 39 symbols on the Stargate, meaning there is always a missing glyph on each DHD. This missing glyph, however, is not the point of origin for the planet. This means that only certain addresses can be reached from specific positions in the galaxy safely. The only way to intervene and reach all destinations in the Milky Way from a specific stargate, is to manually dial the gate using an external power source. Another method for reaching any stargate is to use a dialing computer like Stargate Command- however, this could lead to unforeseen side effects such wormholes traveling through stars or solar flares. DHDs are designed to prevent these incidents from taking place by only allowing access to certain stargates from certain locations throughout the galaxy.

Aside from the 2nd and 3rd, and last sentences, is there a source for any of this, or is this just fan-made speculation? Emmette Hernandez Coleman (talk) (Contribs) 02:21, July 28, 2015 (UTC)

My god. I never even realized the DHDs only had 38 glyphs. This is madness. But anyway, besides the sentences you mentioned, that information has never been explicitly stated on the show. It sounds like someone's own deduction and, until we can find a source showing otherwise, we should probably consider it speculation. -Anubis 10545 (talk) (Contribs) 07:54, July 28, 2015 (UTC)
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