Re: [time-nuts] Austron 2100F
Paul, Thanks for asking, I am doing fine. Growing up in Europe after the War I have a hard time throwing any thing away, resulting in too much stuff.. I would send it for the cost of shipping as I have done in the past for other things. Bert In a message dated 10/22/2010 9:58:33 P.M. Eastern Daylight Time, paulsw...@gmail.com writes: Bert always amazing hope you are well. Regards Paul. On Fri, Oct 22, 2010 at 6:02 PM, ewkeh...@aol.com wrote: Send me a picture direct to my email. I may have one. Bert Kehren In a message dated 10/22/2010 6:01:13 P.M. Eastern Daylight Time, as ma...@fc.up.pt writes: With an outboard +/- 12 Volt power source my 2100F is now working fine. A new replacement package is therefore desperately needed. Best regards, Antonio CT1TE Quoting asma...@fc.up.pt: Dear All, Diving into the hardware, I found the DC-DC +5 to +/-12 V Power Source defective. There may be something more but that is serious enough. Thank you for your kind attention and help. Antonio CT1TE Quoting paul swed paulsw...@gmail.com: Thats what I was thinking also on the reference and emailed back to the group. I believe over time that internal switch to select 1,5,10 mc can get a bit touchy. If a operating reference is connected and checked to be correct toggle the switch a few times to clean its contacts. It gets lonely sitting in there by itself for years. ;-) Regards Paul. On Fri, Oct 22, 2010 at 8:12 AM, Chuck Harris cfhar...@erols.com wrote: Hi Antonio, Ok. I just wanted to be sure that it was still up in Europe. Canada dropped their chains 3 months earlier than they said they would. And since Loran-C is no longer usable world wide, I figure Europe will be dropping their chain soon. The error indication you have described tells me that you have no reference oscillator. This could be for a couple of reasons: 1) you have no frequency standard connected to your 2100F 2) the switch, labeled 1-5-10, on the board stack visible when you hinge open the front panel is set incorrectly for your external frequency standard. 3) Your 2100F is broken. -Chuck Harris asma...@fc.up.pt wrote: Chuck, I am in Portugal, currently receiving the European 6731 LESSAY Chain. Best regards, Antonio CT1TE Quoting Chuck Harris cfhar...@erols.com: Are you sure that your Loran chain is still up? In the US and Canada, Loran has been decommissioned. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Austron 2100F
Chuck, I am in Portugal, currently receiving the European 6731 LESSAY Chain. Best regards, Antonio CT1TE Quoting Chuck Harris cfhar...@erols.com: Are you sure that your Loran chain is still up? In the US and Canada, Loran has been decommissioned. -Chuck Harris asma...@fc.up.pt wrote: Hello! After power up, my 2100F Loran-C receiver displays (E 1002048) followed by (E-20), as usually, but recently I have a trouble: after that the TRACKING led goes RED still and the display shows (- E - - - E). Running the test subroutines 1 to 4 everything seems to be OK but the fault persists. Entering the sequence (0, STATUS, 6) doesn't clear the error. Does someone knows how to make a deep reset for clearing all the errors? Thanks in advance. Antonio CT1TE ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Austron 2100F
Hi Antonio, Ok. I just wanted to be sure that it was still up in Europe. Canada dropped their chains 3 months earlier than they said they would. And since Loran-C is no longer usable world wide, I figure Europe will be dropping their chain soon. The error indication you have described tells me that you have no reference oscillator. This could be for a couple of reasons: 1) you have no frequency standard connected to your 2100F 2) the switch, labeled 1-5-10, on the board stack visible when you hinge open the front panel is set incorrectly for your external frequency standard. 3) Your 2100F is broken. -Chuck Harris asma...@fc.up.pt wrote: Chuck, I am in Portugal, currently receiving the European 6731 LESSAY Chain. Best regards, Antonio CT1TE Quoting Chuck Harris cfhar...@erols.com: Are you sure that your Loran chain is still up? In the US and Canada, Loran has been decommissioned. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Austron 2100F
Thats what I was thinking also on the reference and emailed back to the group. I believe over time that internal switch to select 1,5,10 mc can get a bit touchy. If a operating reference is connected and checked to be correct toggle the switch a few times to clean its contacts. It gets lonely sitting in there by itself for years. ;-) Regards Paul. On Fri, Oct 22, 2010 at 8:12 AM, Chuck Harris cfhar...@erols.com wrote: Hi Antonio, Ok. I just wanted to be sure that it was still up in Europe. Canada dropped their chains 3 months earlier than they said they would. And since Loran-C is no longer usable world wide, I figure Europe will be dropping their chain soon. The error indication you have described tells me that you have no reference oscillator. This could be for a couple of reasons: 1) you have no frequency standard connected to your 2100F 2) the switch, labeled 1-5-10, on the board stack visible when you hinge open the front panel is set incorrectly for your external frequency standard. 3) Your 2100F is broken. -Chuck Harris asma...@fc.up.pt wrote: Chuck, I am in Portugal, currently receiving the European 6731 LESSAY Chain. Best regards, Antonio CT1TE Quoting Chuck Harris cfhar...@erols.com: Are you sure that your Loran chain is still up? In the US and Canada, Loran has been decommissioned. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Austron 2100F
Dear All, Diving into the hardware, I found the DC-DC +5 to +/-12 V Power Source defective. There may be something more but that is serious enough. Thank you for your kind attention and help. Antonio CT1TE Quoting paul swed paulsw...@gmail.com: Thats what I was thinking also on the reference and emailed back to the group. I believe over time that internal switch to select 1,5,10 mc can get a bit touchy. If a operating reference is connected and checked to be correct toggle the switch a few times to clean its contacts. It gets lonely sitting in there by itself for years. ;-) Regards Paul. On Fri, Oct 22, 2010 at 8:12 AM, Chuck Harris cfhar...@erols.com wrote: Hi Antonio, Ok. I just wanted to be sure that it was still up in Europe. Canada dropped their chains 3 months earlier than they said they would. And since Loran-C is no longer usable world wide, I figure Europe will be dropping their chain soon. The error indication you have described tells me that you have no reference oscillator. This could be for a couple of reasons: 1) you have no frequency standard connected to your 2100F 2) the switch, labeled 1-5-10, on the board stack visible when you hinge open the front panel is set incorrectly for your external frequency standard. 3) Your 2100F is broken. -Chuck Harris asma...@fc.up.pt wrote: Chuck, I am in Portugal, currently receiving the European 6731 LESSAY Chain. Best regards, Antonio CT1TE Quoting Chuck Harris cfhar...@erols.com: Are you sure that your Loran chain is still up? In the US and Canada, Loran has been decommissioned. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Austron 2100F
With an outboard +/- 12 Volt power source my 2100F is now working fine. A new replacement package is therefore desperately needed. Best regards, Antonio CT1TE Quoting asma...@fc.up.pt: Dear All, Diving into the hardware, I found the DC-DC +5 to +/-12 V Power Source defective. There may be something more but that is serious enough. Thank you for your kind attention and help. Antonio CT1TE Quoting paul swed paulsw...@gmail.com: Thats what I was thinking also on the reference and emailed back to the group. I believe over time that internal switch to select 1,5,10 mc can get a bit touchy. If a operating reference is connected and checked to be correct toggle the switch a few times to clean its contacts. It gets lonely sitting in there by itself for years. ;-) Regards Paul. On Fri, Oct 22, 2010 at 8:12 AM, Chuck Harris cfhar...@erols.com wrote: Hi Antonio, Ok. I just wanted to be sure that it was still up in Europe. Canada dropped their chains 3 months earlier than they said they would. And since Loran-C is no longer usable world wide, I figure Europe will be dropping their chain soon. The error indication you have described tells me that you have no reference oscillator. This could be for a couple of reasons: 1) you have no frequency standard connected to your 2100F 2) the switch, labeled 1-5-10, on the board stack visible when you hinge open the front panel is set incorrectly for your external frequency standard. 3) Your 2100F is broken. -Chuck Harris asma...@fc.up.pt wrote: Chuck, I am in Portugal, currently receiving the European 6731 LESSAY Chain. Best regards, Antonio CT1TE Quoting Chuck Harris cfhar...@erols.com: Are you sure that your Loran chain is still up? In the US and Canada, Loran has been decommissioned. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Austron 2100F
Send me a picture direct to my email. I may have one. Bert Kehren In a message dated 10/22/2010 6:01:13 P.M. Eastern Daylight Time, as ma...@fc.up.pt writes: With an outboard +/- 12 Volt power source my 2100F is now working fine. A new replacement package is therefore desperately needed. Best regards, Antonio CT1TE Quoting asma...@fc.up.pt: Dear All, Diving into the hardware, I found the DC-DC +5 to +/-12 V Power Source defective. There may be something more but that is serious enough. Thank you for your kind attention and help. Antonio CT1TE Quoting paul swed paulsw...@gmail.com: Thats what I was thinking also on the reference and emailed back to the group. I believe over time that internal switch to select 1,5,10 mc can get a bit touchy. If a operating reference is connected and checked to be correct toggle the switch a few times to clean its contacts. It gets lonely sitting in there by itself for years. ;-) Regards Paul. On Fri, Oct 22, 2010 at 8:12 AM, Chuck Harris cfhar...@erols.com wrote: Hi Antonio, Ok. I just wanted to be sure that it was still up in Europe. Canada dropped their chains 3 months earlier than they said they would. And since Loran-C is no longer usable world wide, I figure Europe will be dropping their chain soon. The error indication you have described tells me that you have no reference oscillator. This could be for a couple of reasons: 1) you have no frequency standard connected to your 2100F 2) the switch, labeled 1-5-10, on the board stack visible when you hinge open the front panel is set incorrectly for your external frequency standard. 3) Your 2100F is broken. -Chuck Harris asma...@fc.up.pt wrote: Chuck, I am in Portugal, currently receiving the European 6731 LESSAY Chain. Best regards, Antonio CT1TE Quoting Chuck Harris cfhar...@erols.com: Are you sure that your Loran chain is still up? In the US and Canada, Loran has been decommissioned. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Austron 2100F
Bert always amazing hope you are well. Regards Paul. On Fri, Oct 22, 2010 at 6:02 PM, ewkeh...@aol.com wrote: Send me a picture direct to my email. I may have one. Bert Kehren In a message dated 10/22/2010 6:01:13 P.M. Eastern Daylight Time, as ma...@fc.up.pt writes: With an outboard +/- 12 Volt power source my 2100F is now working fine. A new replacement package is therefore desperately needed. Best regards, Antonio CT1TE Quoting asma...@fc.up.pt: Dear All, Diving into the hardware, I found the DC-DC +5 to +/-12 V Power Source defective. There may be something more but that is serious enough. Thank you for your kind attention and help. Antonio CT1TE Quoting paul swed paulsw...@gmail.com: Thats what I was thinking also on the reference and emailed back to the group. I believe over time that internal switch to select 1,5,10 mc can get a bit touchy. If a operating reference is connected and checked to be correct toggle the switch a few times to clean its contacts. It gets lonely sitting in there by itself for years. ;-) Regards Paul. On Fri, Oct 22, 2010 at 8:12 AM, Chuck Harris cfhar...@erols.com wrote: Hi Antonio, Ok. I just wanted to be sure that it was still up in Europe. Canada dropped their chains 3 months earlier than they said they would. And since Loran-C is no longer usable world wide, I figure Europe will be dropping their chain soon. The error indication you have described tells me that you have no reference oscillator. This could be for a couple of reasons: 1) you have no frequency standard connected to your 2100F 2) the switch, labeled 1-5-10, on the board stack visible when you hinge open the front panel is set incorrectly for your external frequency standard. 3) Your 2100F is broken. -Chuck Harris asma...@fc.up.pt wrote: Chuck, I am in Portugal, currently receiving the European 6731 LESSAY Chain. Best regards, Antonio CT1TE Quoting Chuck Harris cfhar...@erols.com: Are you sure that your Loran chain is still up? In the US and Canada, Loran has been decommissioned. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Austron 2100F
Are you sure that your Loran chain is still up? In the US and Canada, Loran has been decommissioned. -Chuck Harris asma...@fc.up.pt wrote: Hello! After power up, my 2100F Loran-C receiver displays (E 1002048) followed by (E-20), as usually, but recently I have a trouble: after that the TRACKING led goes RED still and the display shows (- E - - - E). Running the test subroutines 1 to 4 everything seems to be OK but the fault persists. Entering the sequence (0, STATUS, 6) doesn't clear the error. Does someone knows how to make a deep reset for clearing all the errors? Thanks in advance. Antonio CT1TE ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Austron 2100F
Antonio is in Italy and they do have loran still. I have seen the e's on mine and I believe you get that if you do not feed an external reference into it. Regards On Thu, Oct 21, 2010 at 6:55 PM, Chuck Harris cfhar...@erols.com wrote: Are you sure that your Loran chain is still up? In the US and Canada, Loran has been decommissioned. -Chuck Harris asma...@fc.up.pt wrote: Hello! After power up, my 2100F Loran-C receiver displays (E 1002048) followed by (E-20), as usually, but recently I have a trouble: after that the TRACKING led goes RED still and the display shows (- E - - - E). Running the test subroutines 1 to 4 everything seems to be OK but the fault persists. Entering the sequence (0, STATUS, 6) doesn't clear the error. Does someone knows how to make a deep reset for clearing all the errors? Thanks in advance. Antonio CT1TE ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Austron 2100F
In fact it seems that he is in Portugal. Regards Ignacio, EB4APL El 22/10/2010 2:04, paul swed escribió: Antonio is in Italy and they do have loran still. I have seen the e's on mine and I believe you get that if you do not feed an external reference into it. Regards On Thu, Oct 21, 2010 at 6:55 PM, Chuck Harriscfhar...@erols.com wrote: Are you sure that your Loran chain is still up? In the US and Canada, Loran has been decommissioned. -Chuck Harris asma...@fc.up.pt wrote: Hello! After power up, my 2100F Loran-C receiver displays (E 1002048) followed by (E-20), as usually, but recently I have a trouble: after that the TRACKING led goes RED still and the display shows (- E - - - E). Running the test subroutines 1 to 4 everything seems to be OK but the fault persists. Entering the sequence (0, STATUS, 6) doesn't clear the error. Does someone knows how to make a deep reset for clearing all the errors? Thanks in advance. Antonio CT1TE ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Austron 2100F
In a message dated 22/10/2010 01:05:19 GMT Daylight Time, paulsw...@gmail.com writes: Antonio is in Italy and they do have loran still. I have seen the e's on mine and I believe you get that if you do not feed an external reference into it. Regards --- I thought Ct1 was Portugal. regards Nigel GM8PZR ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Austron 2100F
Hello Tony, Do you have the manual ? My june, 1983 2100F op and maintenance manual, page 3-13 indicates: E #1 is a - or acquisition not in progress, cleared by software E#2 is a E, normal tracking has been halted due to a loss of external reference The operator clears this bit manually by restoring the external reference. E#3 is a - ,noise number is less than 4000 E#4 is a - ,no blinking E#5 is a - , servos active E#6 is a Enot yet in tracking mode . this bit is cleared by software. On page 3-14: The STATUS indicators are displayed by (keystrokes) STATUS 6 To clear the indicators, enter 0 STATUS 6 I found no other method of a deep reset. Take a look at the external reference connection to be sure it is recognized.. Any questions, send them along. Stan, W1LE Cape Cod On 10/21/2010 6:55 PM, Chuck Harris wrote: Are you sure that your Loran chain is still up? In the US and Canada, Loran has been decommissioned. -Chuck Harris asma...@fc.up.pt wrote: Hello! After power up, my 2100F Loran-C receiver displays (E 1002048) followed by (E-20), as usually, but recently I have a trouble: after that the TRACKING led goes RED still and the display shows (- E - - - E). Running the test subroutines 1 to 4 everything seems to be OK but the fault persists. Entering the sequence (0, STATUS, 6) doesn't clear the error. Does someone knows how to make a deep reset for clearing all the errors? Thanks in advance. Antonio CT1TE ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Austron 2100F
The first E seems to indicate Normal tracking has been halted due to loss (or temporary interuption) of the external reference The last E = not yet in tracking mode Doug K8ZN -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts- boun...@febo.com] On Behalf Of asma...@fc.up.pt Sent: Thursday, October 21, 2010 2:46 PM To: time-nuts@febo.com Subject: [time-nuts] Austron 2100F Hello! After power up, my 2100F Loran-C receiver displays (E 1002048) followed by (E-20), as usually, but recently I have a trouble: after that the TRACKING led goes RED still and the display shows (- E - - - E). Running the test subroutines 1 to 4 everything seems to be OK but the fault persists. Entering the sequence (0, STATUS, 6) doesn't clear the error. Does someone knows how to make a deep reset for clearing all the errors? Thanks in advance. Antonio CT1TE ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Austron 2100F
You're asking me if I can say more? Most wish they could get me to shut up;-) The design for the receiver of the 2100T/F is a mishmash of synchronous and asynchronous logic. They mixed logic families in an apparent attempt to battle a few timing problems. On one board, there is 7400, 74LS, 74L, 74C, 25LS, and 74HC all at the same time, and all in the same signal path! Following the trend of the time, they used signature analysis to aid in troubleshooting... only they didn't try very hard. The signatures are fine for working out problems with the CPU, and IO section, but they do nothing for most of the logic in the receiver. And signature is unable to do anything for timing problems. So, how do you find a thermally related timing problem? I had two 2100F's one was rock solid, and one was rock solid, as long as my rack stayed below 75F. Summertime would hit, and the receiver would lock, run for about 2 hours, and then it would be unlocked. I swapped boards between the two receivers until I determined that it was without doubt the Acquire/Track board. Wherever that board was, the receiver in question would fail when it got warm. The Acquire/Track board is where they divide down the reference oscillator to form a mask of the loran signal. The mask is matched to the signal, and the divider is adjusted by adding, or subtracting counts, to track the loran signal. I checked every trace on that board, tested every chip for logical function, and ultimately replaced every part on that board with new, and it still had a thermal problem. I tried to concoct a method of even sensing the problem, but the very slow nature of the problem (due to the slow changes between the reference and the loran signal when you were within the range that the receiver could tolerate) defied my attempts. If your design needs 7400, 74LS, 74L, 74HC, 74C, and 25LS all in the same counter/comparator to work, you have botched the design! Although the manual is silent on the fact, I am pretty sure that they had to spec the parts on this circuit down to the manufacturer and lot number to come up with a set of parts that had all of the timing and threshold problems settled so that the board could work. I ultimately concluded that the use of 7400, 74L, and 74LS with its TTL (1.3V) threshold levels was only marginally compatible with the 74C and 74HC with their CMOS (2.5V) threshold levels, and could only work at lower temperatures. Bah! -Chuck Harris christopher hoover wrote: Chuck Harris cfhar...@erols.com wrote: They can be very hard to fix, because there is some really poorly designed logic circuitry, and the signature analysis functions really can't find very many problems. Interesting. Can you say more? I tried to repair mine -- I have a signature analyzer -- but did not ever get it to work. The initial indication was a bad memory chip. I carefully replaced it, but it never came back to life. Maybe that was a red herring. -ch ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Austron 2100F
Manuals and schematics are available on Brooke's www.prc68.com website. They can be very hard to fix, because there is some really poorly designed logic circuitry, and the signature analysis functions really can't find very many problems. That said, I use a 2100T for my main timing receiver. The F is virtually identical... using the same PC boards, just populated less fully. -Chuck Harris Claude Houde wrote: Hello ! I'm new to the list and I have been offered an Austron 2100F receiver at a good price. Before jumping in, I have a two questions: * I read that a new version of LORAN may come along soon. Will my old receiver be instantly obsolete as a frequency comparator ? * The receiver is priced reasonably because it needs repair. I diagnosed it as far as I could and found corrosion in the power supply section, but I had to stop as I had no luck finding the manual and schematic, can someone help me ? Thanks for your help ! Claude ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Austron 2100F
Hello Claude, Austron 2100F will only be good for the old LORAN-C, not any enhanced e-LORAN. Austron has been long out of business, so I would not expect any field upgrade options. I have not heard of others doing mods to the 2100F, to be fully e-LORAN capable. Brooke has the manual set on a CD. You will be happy with his product. Other commercial, laboratory grade, LORAN-C timing receivers like the Stanford Research Systems model FS700 will not do e-LORAN to the best of my knowledge. The LOCUS brand receivers are a modern RX, but I do not know their e-LORAN capability. Stan, W1LECape Cod Claude Houde wrote: Hello ! I'm new to the list and I have been offered an Austron 2100F receiver at a good price. Before jumping in, I have a two questions: * I read that a new version of LORAN may come along soon. Will my old receiver be instantly obsolete as a frequency comparator ? * The receiver is priced reasonably because it needs repair. I diagnosed it as far as I could and found corrosion in the power supply section, but I had to stop as I had no luck finding the manual and schematic, can someone help me ? Thanks for your help ! Claude ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Austron 2100F
Hi Claude: For manuals info see: http://www.prc68.com/I/A2100F.shtml#Man and ordering see: http://www.prc68.com/P/Prod.html#Austron The enhanced LORAN-C adds a pulse after the existing group with a variable time delay. All the existing receivers will continue to operate. Part of the new system is using UTC as the basis of the time of transmission for each station. The old way was to operate the transmitters in chains where the master station transmitted, then each of the slaves transmitted after a specified delay. Old navigation receivers only worked with a fixed GRI, i.e. only listened to stations in the same chain, since that's the only thing that made sense with a chain system. But with the new UTC system ALL the stations you can receive i.e. an all in view approach allows for better locations because of more stations. For timing applications you want to only listen to the nearest station. The more distance between you and the transmitter the more variation in the timing. Now since each station is UTC controlled the accuracy of slave stations used for timing should be very good. I think a PIC can be used as an add on to any existing LORAN-C receiver to decode the data packets. Have Fun, Brooke CLarke http://www.PRC68.com Hello ! I'm new to the list and I have been offered an Austron 2100F receiver at a good price. Before jumping in, I have a two questions: * I read that a new version of LORAN may come along soon. Will my old receiver be instantly obsolete as a frequency comparator ? * The receiver is priced reasonably because it needs repair. I diagnosed it as far as I could and found corrosion in the power supply section, but I had to stop as I had no luck finding the manual and schematic, can someone help me ? Thanks for your help ! Claude ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Austron 2100F
Chuck Harris cfhar...@erols.com wrote: They can be very hard to fix, because there is some really poorly designed logic circuitry, and the signature analysis functions really can't find very many problems. Interesting. Can you say more? I tried to repair mine -- I have a signature analyzer -- but did not ever get it to work. The initial indication was a bad memory chip. I carefully replaced it, but it never came back to life. Maybe that was a red herring. -ch ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
