[time-nuts] Longevity of Rb standards

[Bob Camp]

Hi

If we are talking about 12 hours on / 12 hours off each day - leave it on, That one is a slam dunk. The cycling will kill stuff faster than any aging on the bulb (or whatever).

If you are are talking about running it once a month, then that’s a bit different. You will need to run if for more than 12 hours to get it fully stable. A lot depends on the characteristics of the unit you have. Three days or so is a pretty good run in number for an Rb.

Nobody really knows how long these Telcom Rb’s will last. You see numbers ranging from 5 years to 25 years tossed around. Both sound a bit suspect to me. The surplus parts all have 5 years on them by now. Running anything as hot as an Rb does continuously for 25 years without failure seems a bit much as well. There’s sure to be a bunch of fine print on both of those numbers. Certainly there are examples of Rb’s that are > 25 years old that are working fine. I personally have killed a number of Rb’s in under 5 years (by abuse …). Your mileage will vary …. 

Bob

> On Nov 7, 2014, at 4:48 PM, Richard Bown <richard at g8jvm.com> wrote:
> 
> 
> Hi
> I've a LRPO-101, which is going to give a greater remaining life, leaving on for a 12 hr period, or
> switching on /off as required . ie is the ageing greater when warming up, or constant ?
> -- 
> -- 
> Best wishes /73
> Richard Bown
> 
> Email : richard at g8jvm.com
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