[Amps] Shipment of large old tubes

[Pete Lancashire]

You contents have to survive being dropped between 4 to 6 feet in
afree fall. Impact can be any corner or side. For a shipment
acrosscountry there will be at least one but I'd say two transfer
pointsDoing the math
1 - local pickup2 - drop off at transfer center3 & 4 - pick up and
move within transfer center5 - load into freight truck6 - unload into
2nd tranfer center7&8 - see 3/49 - see 510 - uload at your regional
center11 - see 3/412 - load into local delivery13 - unload at your
door/dock
so take your box with your tube in it, and drop it 4 feet, 13 times.
Ttoss it5-10 feet a couple times, then drop on top of it a couple
boxes weighing70 lbs.
On Fri, Dec 16, 2011 at 10:20 AM, Colin Lamb <k7fm at teleport.com> wrote:
> A friend of mine called recently and told me he was cleaning out his basement and sending me some of his old tubes.  One was a 250TH.  I got it last night.  It was packed very well, along with other tubes.  The box arrived with no damage.
>
> However, when I unpacked the 250TH, I noted that the metal stem above the plate had fatigued, causing the plate to be loose inside the still good glass.  I believe the damage was fatigue because the tube was laying on its side, rather than being shipped vertical.  I recall a few years ago, I shipped some old tennis ball Western Electric 205D tubes on their side.  The top internal structure is supported by a vertical glass rod.  They were shipped on their side and all had broken glass rods, even though the tube envelope was still good.
>
> I expect modern tubes do not suffer this fate, and there is always the problem that what is shipped vertical is not likely to remain vertical during shipment.
>
> So, this is just a word of caution.
>
> 73,  Colin  K7FM
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