[MCARC] LotW

[Dave Crawford]

Can you use the same certificate on two different computers?

73.
Dave
KØKSI



> On Feb 6, 2026, at 8:12 AM, Ken Kopp - AKØA <ken at ak0a.net> wrote:
> 
> Once you have everything all set up, click on "File," then "Backup Station Locations, Certificates and Preferences..." It will generate a tqslconfig.tbk file. Save it to a backup device. You can move/restore to any computer.  
> 
> 73, 
> Ken 
> On Friday, February 6th, 2026 at 7:38 AM, Michael Philbrick <philbrick52 at gmail.com> wrote:
>> Nope, it hadn't expired. It was set to expire next month.
>> 
>> On Thu, Feb 5, 2026 at 10:41 AM David Crawford <dcrawford2020 at gmail.com <mailto:dcrawford2020 at gmail.com>> wrote:
>>> Mike,
>>> 
>>> A certificate is “tied” to a specific computer. Your old one probably expired.
>>> 
>>> Dave
>>> 
>>> Sent from my iPhone
>>> 
>>>> On Feb 5, 2026, at 10:28 AM, Michael Philbrick <philbrick52 at gmail.com <mailto:philbrick52 at gmail.com>> wrote:
>>>> 
>>>> 
>>>> Good morning fellow hams,
>>>> 
>>>> Information only for those with a Logbook of the World account with ARRL. The story is I had setup a LotW account with ARRL. At some point in time, I replaced a computer with a newer model of an old computer. I have never really been interested too much in special things that a ham can investigate and/or participate in, but the Worked All States (WAS) for the 250th did get my attention. That ham activity requires using LotW. So, I began trying to setup that app on my present ham computer. I have my original postcard from ARRL and I found my 3+ years old email with my trusted certificate file. I could eventually login and see my QSO/QSL history, my certificate number, and my certificate dates. However, many features are grayed out. I cannot upload my tq6 special file and the reason popup states it is because "this is not the computer you requested your certificate". I suppose it is a MAC addressing issue. That's the only way that makes any sense to me that ARRL could be filtering access. There are several YouTubes on setting up your LotW account. I didn't find one on what happens if your computer crashed or if you upgraded to a different computer. Yes, a little perturbed, but now awaiting an email with new certificate.
>>>> 
>>>> --
>>>> Michael Philbrick
>>>> Odd Job Technician
>>>> Retired Guys LLC (fictional)
>>>> Cousin to my genealogy relatives
>>>> NØUDF to hams
>>>> Retired science/CTE educator
>>>> Seneca, KS
>>>> mdp.seneca at gmail.com <mailto:mdp.seneca at gmail.com>
>>>> https://www.facebook.com/michael.philbrick/
>>>> 785-294-2719
>>>> 
>>>> ______________________________________________________________
>>>> MCARC mailing list
>>>> Home: http://mailman.qth.net/mailman/listinfo/mcarc
>>>> Help: http://mailman.qth.net/mmfaq.htm
>>>> Post: mailto:MCARC at mailman.qth.net <mailto:MCARC at mailman.qth.net>
>>>> 
>>>> This list hosted by: http://www.qsl.net <http://www.qsl.net/>
>>>> Please help support this email list: http://www.qsl.net/donate.html
>>> ______________________________________________________________
>>> MCARC mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/mcarc
>>> Help: http://mailman.qth.net/mmfaq.htm
>>> Post: mailto:MCARC at mailman.qth.net <mailto:MCARC at mailman.qth.net>
>>> 
>>> This list hosted by: http://www.qsl.net <http://www.qsl.net/>
>>> Please help support this email list: http://www.qsl.net/donate.html
>> 
>> 
>> 
>> --
>> Michael Philbrick
>> Odd Job Technician
>> Retired Guys LLC (fictional)
>> Cousin to my genealogy relatives
>> NØUDF to hams
>> Retired science/CTE educator
>> Seneca, KS
>> mdp.seneca at gmail.com <mailto:mdp.seneca at gmail.com>
>> https://www.facebook.com/michael.philbrick/
>> 785-294-2719
>> 
> 
> ______________________________________________________________
> MCARC mailing list
> Home: http://mailman.qth.net/mailman/listinfo/mcarc
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:MCARC at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/mcarc/attachments/20260206/0dd93f1e/attachment-0003.html>