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KB2VXA > ENERGY 12.12.08 19:33l 33 Lines 1400 Bytes #999 (0) @ WW
BID : 50604_VK2TV
Read: GUEST OE7FMI
Subj: Re: ZS1AFE > lamps
Path: DB0FHN<DB0RGB<OE5XBL<OE6XPE<DB0RES<DK0WUE<7M3TJZ<F6CDD<F6BVP<VK2TV
Sent: 081212/1757Z @:VK2TV.#MNC.NSW.AUS.OC #:50604 [Kempsey, QF68JX] $:50604_VK
From: KB2VXA@VK2TV.#MNC.NSW.AUS.OC
To : ENERGY@WW
Hi Rob and all,
Just because the manufacturer is German doesn't say the lamp was made in
Germany. Quite often things are made elsewhere in some out of the way
factory and branded with the name of what has become a distributor, it's
called outsourcing. You have to look carefully for the "made in" tag to
see where it is actually made, could be China, Mexico, Indonesia,
anywhere.
Yes, they do go yellow with age, not surprising for one of 6 years but
with all the improvements since then the new one probably won't shift
spectrum 6 years down the road. Why they did that I don't know, could be
some of the phosphors in the mix went dead.
The temperature problem is easily explained, when cold it takes more time
for the mercury in the amalgam coating the electrodes to vaporize,
meanwhile the lamp depends on argon to operate. Actually there is very
little mercury in them as compared to a standard flourescent lamp which
also suffers in cold for the same reason. That's why neither is suitable
for outdoor lighting in the dead of winter. Even the high output lamps
designed for outdoor lighting suffer in extreme cold, I've seen them
flicker and struggle when it drops well below freezing.
73 de Warren
Station powered by JCP&L atomic energy, operator powered by natural gas.
Message timed by NIST: 17:57 on 2008-Dec-12 GMT
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