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Re: Sources for hydrogen/helium in small quantities? #u4b
https://www.youtube.com/watch?v=d85OX6yEwE0
By Linus · #85759 ·
Antenna System Multi-band
Hi there. I am considering different antenna types in anticipation of setting up a QDX?Transceiver. Right now, I use a segmented dipole ( https://sweers.ch/segmented-dipole-antenna.html ) that is
By Linus · #85758 ·
Re: BS170 Sources
That's good to know.
By Joshua KJ7LVZ · #85757 ·
Re: QDX and eliminating the laptop
Life in that ASUS EEE PC afterall. Glad it worked for you. Those things are built like tanks. 73 de Andy
By - Andy - · #85756 ·
Re: QDX V3 arrival and build
My oder # is 57185 the way I take it is ,what I use to say to my kid when they ask when do we get there I always said "when we get there " I am sure the QRP LAB team are on over load trying to get the
By John Kiernan · #85755 ·
Re: U4 tracker map display
Thanks I tried the Avast Browssr but still get the Google Development warning and map overlay r
By Richard Fairman · #85754 ·
Re: Sources for hydrogen/helium in small quantities? #u4b
Or use lye, aluminum and water and avoid the electrolysis...................use lots of care in this reaction; it generates a lot of heat as well as potentially explosive hydrogen gas. Do this
By Lee · #85753 ·
Re: QDX V3 arrival and build
Looks to be under 3 watts but frankly I would be inclined to operate at 8 to 9 volts. Whilst I said eBay, I looked where I bought the power supply kit from - Banggood. Currently showing GBP8. ?It
By Pete Snipe · #85751 ·
Re: Sources for hydrogen/helium in small quantities? #u4b
Hydrogen would have the CHEAPEST lift. FWIW, the reason that the Hindenburg was full of hydrogen was that the US wouldn¡¯t sell helium to Nazi Germany. The Hindenburg made multiple trips across the
By Jim Strohm · #85750 ·
Re: Sources for hydrogen/helium in small quantities? #u4b
I don¡¯t have answers to your questions. Here¡¯s a BBC report explaining why the availability and price of helium has become so unstable. https://www.bbc.com/news/magazine-24903034 ¡ªMike Perry,
By Mike Perry, WA4MP · #85749 ·
Re: Sources for hydrogen/helium in small quantities? #u4b
Hydrogen is lighter but also a bigger molecule so it is less likely to leak. Colin K6JTH
By Colin Kaminski · #85748 ·
Re: Sources for hydrogen/helium in small quantities? #u4b
Umm, yes. Filling a balloon with it is left as an exercise for the student? How bad is party store helium, assuming you can get it? Also, how much do you need? Local stores appear to have 15 CuFt for
By William Smith · #85747 ·
Re: Sources for hydrogen/helium in small quantities? #u4b
IIRC, hydrogen is lighter than helium but has larger atoms, so it doesn¡¯t deflate a balloon as quickly as helium. But if you¡¯re careless, it is rather reactive. 73 Jim N6OTQ Sent from my
By Jim Strohm · #85746 ·
Re: Sources for hydrogen/helium in small quantities? #u4b
Helium Shortage https://www.morningbrew.com/daily/stories/global-helium-shortage?utm_campaign=mb&utm_medium=newsletter&utm_source=morning_brew&mid=6b66a9666c29acfe7a682fd0c2f45a6a
By W2BEE · #85745 ·
Re: Sources for hydrogen/helium in small quantities? #u4b
You can make your own hydrogen with water, an electrolytic salt (like sodium chloride), and some low voltage DC. O2 comes off one electrode and H2 comes off the other. You figure out which. This is a
By Jim Strohm · #85744 ·
Re: QDX V3 arrival and build
I think the word "Completed" is very misleading. Maybe "In Process" would be better. Then when "Shipped" a phrase should say "Tracking info emailed to you when available". Just my opinion. Don
By Don DeGregori · #85743 ·
Re: Sources for hydrogen/helium in small quantities? #u4b
My local Airgas distributor will order a small hydrogen cylinder. It looks like a small CO2 tank and is $48. It comes in 3 grades and I have requested a typical COA for each one to see if the grade
By Colin Kaminski · #85742 ·
Sources for hydrogen/helium in small quantities? #u4b
I'm wondering if anyone can suggest where these gases might be obtained in small quantities? Welding supply houses sell both gases in larger amounts than I would ever use; "party store" helium is
By John AE5X · #85741 ·
NJQRP Skeeter Hunt 2022
By Larry Makoski · #85740 ·
Re: QDX and eliminating the laptop
Hi Andy, Trying to remember, I think I bought the machine with W7 and got the free W10 upgrade back when that was happening.? I made the mistake of putting W10 64 Bit on it as it has a 64 bit
By rentwist@... · #85739 ·