[ARC5] BC 453 request - ham radio

[Peter Gottlieb]

Oh I learned that with a TS-147 that smoked its transformer and set off the fire alarm at 5 am. Quite the fiasco as the fire department showed up. 


Peter

> On Nov 1, 2019, at 5:17 PM, CARL HUETHER <k1uhy at comcast.net> wrote:
> 
> The USN commissioned a study in the late 50's or so and found that leaving all the tube gear on 24/7 reduced down time.
> 
> Not a good idea in some ham and old military gear where the original paper and electrolytic caps can create a lot of smoke and damage.
> 
> Even after full recaps, resistors, etc I wont leave any tube equipment on 24/7 or especially overnight.
> 
> Carl
> 
> 
> 
> 
>> On November 1, 2019 at 1:21 PM Richard Knoppow <1oldlens1 at ix.netcom.com> wrote:
>> 
>> 
>>    This is true but also keep in mind that running an 
>> incandescent lamp continuously also results in longer life. Same 
>> is true for vacuum tubes. The stress at turn on especially but 
>> also turn off shortens the life. Often long service lamps are 
>> used in places where they run continuously which can account for 
>> part of the longer life. You may have noticed that most of the 
>> time when a lamp fails it does so at turn on.
>> 
>>> On 11/1/2019 9:36 AM, D C _Mac_ Macdonald wrote:
>>> Easy solution:  Buy commercial rough service incandescent lamps 
>>> rated at 130 Volts!  They will last for many years.  A few in my 
>>> house lasted over 12 years or more from original 
>>> installation/construction.
>>> 
>>> 73 de Mac, K2GKK/5​
>>> Since 30 Nov 1953​
>>> Oklahoma City, OK​
>>> USAF, Retired ('61-'81)​
>>> FAA, Retired ('94-'10)
>> 
>> 
>> -- 
>> Richard Knoppow
>> 1oldlens1 at ix.netcom.com
>> WB6KBL
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