What's the largest trans-match you have ever seen? This may be it.
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Not exactly sure what's going on here, but it's making my hair stand up even from this distance. It looks like it could hurt me, bad.
Climberman;n79802 said:
EXACTLY!!! I haven't really looked at the new IDPA rules yet, but I assumed this was related. FlatFender to clarify
htperry;n79857 said:LOL - You guys have tranny on the brain. Ya'll thought this was about a transvestite gun match, didn't you?
There has to be a reason that Maxpedition makes man purses.
Zedhound;n79955 said:
This is probably a medium wave AM antenna tuning unit using a couple of very large copper tubing Variometer style inductors and high voltage vacuum capacitors (1 variable and 3 fixed, in the middle). The loop to the left is most likely for measuring the current through the antenna system. This would be in a station, broadly speaking, of anywhere from 10kw to 100kw. The below examples use fixed inductors rather then Variometers. I thought the OP picture was neat because of the copper tubing Variometers.
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Came in here expecting...
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I, too, thought this was pretty cool ... given that the VV caps are only marginally larger than the ones I use on my small loop antennae for 100W, I'm surprised that this might be for a 10-100kW station ... in any case, I don't think that is a room you'd want to spend time in while that monster was transmitting!
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cookiecutter;n80117 said:
The reason you have vacuum variables on your magnetic loop are for the high voltage rating, more than the current rating. At 100w, your cap is probably overkill on current rating. The caps in the first picture are probably something like 25-50kv @ 500+ amps. Someone here may know better and can say. RFMan
Dang, those VV caps are larger in diameter than a quart mason jar. Never had a datasheet on ones that size.
Yep, for a small loop, the Q is extremely high. Even a 5W QRP loop, efficiently constructed with really low losses everywhere, can generate >1kV at the tuning cap. Small mag loops don't have high current -in the caps themselves-.
Those variometers look cool. They would make a heck of a regen! And that current sampling loop...holy crap.
Yep, for a small loop, the Q is extremely high. Even a 5W QRP loop, efficiently constructed with really low losses everywhere, can generate >1kV at the tuning cap. Small mag loops don't have high current -in the caps themselves-.
Those variometers look cool. They would make a heck of a regen! And that current sampling loop...holy crap.
I went on an afternoon long "private tour" of the VOA station in Greenville (RIP). It was....incredible. A 300kW transmitter is a otherworldly beast.
Paul, I need some eye bleach.... ;-)
Paul, I need some eye bleach.... ;-)
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htperry;n79857 said:LOL - You guys have tranny on the brain. Ya'll thought this was about a transvestite gun match, didn't you?
I thought it was about a dating service.
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JohnFreeman;n80477 said:
I saw large trans and my mind went off in a strange direction...
JohnFreeman;n80477 said:
I bet the RF combiner room looked something like this? The below pictures aren't VOA, but are of a 200kw site in Missouri City, TX with 9 transmitters combined into the antenna system.
