I was impressed with the added performance from using HA solder on my K1 SN 1976 at altitude, but I thought the advantages were quickly lost from having to store the K1 in an altitude chamber when I got home. I'm not seeing the full 22% increase that some are seeing since the mountains around here are limited to around 11,000+'.
I built my chamber from an old Pelican case and a C&H dry vane vacuum pump. I stick a pocket altimeter inside to monitor "vacuum" and maintain it at the 18,000' specified for HA solder in long-term storage. I have a quick disconnect fitting so I can unplug the Pelican case from the pump and it maintains "altitude" long enough for me to get back to the mountains. Details on my web site. Eric KE6US www.ke6us.com -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Lynn Burlingame Sent: Saturday, April 01, 2006 9:58 AM To: [email protected] Subject: [Elecraft] High Altitude Solder I plan to do a lot of mountaintopping in the next few years and will be assembling a K1 for this specific use. I need to locate a good source for MILSPEC high altitude solder that meets Elecraft's specifications and will not void the warranty. The reported 22% increase in equipment efficiency will make the extra expense worthwhile. Does anybody know of a vendor that still sells it? Are there any special precautions or procedures for using this solder? Lynn N7CFO _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
