Rich Measures wrote:
>>Rich Measures
>>asked:
>>
>>>- Ian: Please explain how both of these tubes scavanged gas when they
>>>were not being operated.
>>
>>The scavenging process is a chemical reaction. It doesn't need electric
>>power.
>>
>Let's see if I have this straight, Ian. Both 3-500Zs suddenly developed
>gas at the same instant---whereupon the filament helices bent sideways,
>which caused a (grid/filament) short and a near short. However, the
>(Rauchian) gas that allegedly caused the grid/filament short was rather
>excellently scavenged, whilst the tubes were cold no less, before they
>could be tested on a hi-pot. Hmmmm.
Fair point! Thank you.
Back to the original question, then: exactly what produced the
mechanical force that made the filaments move?
(BTW, Rich, this "Rauchian" word of yours is getting bloody irritating.
It wins you no friends.)
73 from Ian G3SEK Editor, 'The VHF/UHF DX Book'
'In Practice' columnist for RadCom (RSGB)
www.ifwtech.demon.co.uk/g3sek
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