[amsat-bb] when are TLE's too old to use?

Fri May 18 15:17:03 UTC 2018

Clint was reasonably responding to another member's reasonable question.

It's not all about you, Greg. 

Steve AI9IN

On 2018-05-18 10:52, Gregory Beat wrote:

> ????
> Clint,
> I have been working satellites since Oscar 6, when I was in high school.
> Worked STS-9 (Owen Garriott, Spacehab-1) when I was in graduate college.
> 
> No need for education or evangelizing. 
> 73.
> 
> greg, w9gb
> AMSAT-NA, AMSAT-UK
> Sent from iPad Air
> 
>> On May 17, 2018, at 8:43 PM, Clint Bradford <clintbrad4d at earthlink.net> wrote:
>> 
>> If you are working the ISS (fruitless right now), I would update every week, because 
>> they re-position themselves a couple times a month. NOTHING drastic, but that is 
>> where the slight difference is from week-to-week.
>> 
>> And since you're updating already, snag 'em all (grin).
>> 
>> If not working the ISS - every couple weeks or up to a month is fine.
>> 
>> Clint K6LCS
>> http://www.work-sat.com
>> 909-999-SATS
> 
> _______________________________________________