Ed, Jim, Bob, and ALL others on the list for the help with my EST/DST change
over problem for CT DOS.
After being reminded about the existence of the "DOS SET TZ" variable I reset
it in my CT batch
file to "SET TZ=EST4EDT" to correct the CT time for GMT.
On April 1st I found that CT was again off by 1 hr which I expected !!!
After resetting my CT batch file to "SET TZ=EST5EDT" corrected the problem.
Guess I'll be watching CT DOS closely in the Fall unless I have changed over to
CT WIN by then.
I'm still not sure where CT gets its' time data from, CT, BIOS, or what.
Still working on why the "CT_TIME" utility not working, but that's for another
TNX to all !!!
At 03:37 3/28/2007, R Johnson wrote:
>At 07:36 3/27/2007, Jim Reisert AD1C wrote:
>>At 11:48 PM 3/25/2007, R Johnson wrote:
>>>After using CT DOS V10 for the CQ WPX contest I found all of my times were
>>>off by +1 Hour.
>>>I checked CT WIN and it was logging the correct time, just a problem with CT
>>This is an interesting situation.
>Very interesting for the "Dark Ages" of the DOS OP System !!!
>>My understanding is that DOS gets time from the BIOS. I doubt any BIOS or
>>DOS have been patched with the new DST rules.
>After doing a little research, "DOS TIME" was based on GMT only, thus the need
>the Time Variable "SET TZ= EST?EDT" (or whatever your offset is/was) !!!
>>If your computer is set to local time, you probably have a TZ variable
>> setenv TZ=EST5EDT
>Yes it was !!!
>>I'll bet that doesn't work between March 11 and April 1 (the "traditional"
>>start of DST in the US).
>That's my guess also, I'm waiting to see how things play out !!! Obversely
>I'll be doubly
>checking CT's time vs GMT for the next few weeks !!!
>>My guess is that during the 3 earlier and (?) later weeks of DST, you will
>>need to change this to:
>> setenv TZ=EST4EDT
>I did that after I was aware of the of the problem and it fixed it !!! Used
>>Now what happens on the CQWW Phone weekend, where time traditionally changed,
>>is anyone's guess.
>Guess I'll have to watch for that TEST, but I usually conk out before the
>change over !!!
>>As Bob noted, CTWIN gets its time from Windows, and it is correct (I just
>>checked, my PC is set to
>Makes sense after thinking about how MICROSOFT handled time between DOS and
>>I think you're best off setting your DOS PC to GMT and using CT with no TZ
>Nope, I can live with it the way I used CT for almost 20 years (Old GEEZER
>>As to correcting existing logs, make sure you have the right "flavor" of
>>CT_TIME, there are
>>different versions for CT9 and CT10, and for running in an MS-DOS prompt
>>vs. running under real DOS.
>Hence the next problem to be addressed. Things don't seem to work wright with
>I'll have to get back to you with the results of my tests !!!
>>73 - Jim AD1C
>73 Bob, K1VU
>>Jim Reisert AD1C, 7 Charlemont Court, North Chelmsford, MA 01863
>>USA +978-251-9933, <email@example.com>, http://www.ad1c.us
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