LinkBack Thread Tools Search this Thread Display Modes
Prev Previous Post   Next Post Next
  #20   Report Post  
Old April 24th 15, 03:25 AM posted to rec.radio.amateur.antenna
external usenet poster
 
First recorded activity by RadioBanter: Jun 2007
Posts: 1,336
Default A Top Band 1/4 wave vertical?

On Thu, 23 Apr 2015 18:32:56 -0700, Jeff Liebermann
wrote:

Helium previously costs about $8/liter but is now running about
$20/liter thanks to the helium shortage. That's $14,600 for 730
liters. Are you sure you want to do this?


Hmmm... that can't be right. The problem is that I'm getting prices
for helium that are all over the map. For example:
http://www.reuters.com/article/2013/09/19/us-helium-shortage-analysis-idUSBRE98I0AN20130919
"... spot price of liquid helium has jumped to $25-$30 per
liter from $8 last year."

http://www.crainsnewyork.com/article/20140126/FINANCE/301269974/helium-shortage-deflates-party-city
"prices have doubled since 2006, to $6.13 per-cubic meter,
according to the latest figures from the U.S. Geological Survey."
1 cubic-meter = 1000 liters, so that is $0.00613/liter which seems
rather low.

http://minerals.usgs.gov/minerals/pubs/commodity/helium/mcs-2014-heliu.pdf
"The estimated price range for private industry’s Grade-A gaseous
helium was about $7.21 per cubic meter ($200 per thousand cubic
feet), with some producers posting surcharges to this price.
1 cubic-meter = 1000 liters, so that is $0.00721/liter, which agrees
with the previous article, mostly because the price came from the same
source.

Ok, let's try party helium:
http://www.sfparty.com/products.php?product=Helium%3A-Balloon-Time-Disposable-Helium-Tank-Purchase
$55 for 14.9 cubic-ft.
14.9 ft^3 = 422 liters
$55 / 422 liters = $0.13/liter

Does anyone have the real price of helium?

--
Jeff Liebermann
150 Felker St #D
http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558


 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Which is better: 5/8 wave vertical or J pole? David Antenna 29 November 20th 10 03:50 PM
20m 1/4 wave portable vertical K7ITM Antenna 1 April 24th 08 08:13 PM
New program - 1/2-wave vertical Reg Edwards Antenna 6 May 13th 05 04:29 PM
5/8 wave 6m vertical [email protected] Antenna 7 February 15th 05 03:02 PM
1/4 wave vertical vs. loaded vertical Dave Antenna 6 May 26th 04 01:28 AM


All times are GMT +1. The time now is 07:44 PM.

Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright ©2004-2025 RadioBanter.
The comments are property of their posters.
 

About Us

"It's about Radio"

 

Copyright © 2017