Added modified circuit 73 Andrew G8UUG

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Hi, I have bought several QLG1's over the years and they are a very fine product and work indoors! The last one I bought, I wanted to use to feed other radios with GPS information, Both FT-991A and Ic

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And that's why he's Mr. Wizard, and I'm not :-)

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Hi All, All good points, and yes there seems to be oscillation, at 5V which a cap did not cure, Data is valid and working at 4.8V at 48mA. Hans came back to me with the answer. see below: "Hi Andrew T

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By unstable do you mean oscillation at one or more of the outputs? Maybe a decoupling capacitor of 0.01u across the power pins right at the chip might help...

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Andrew, All? PPS and data output confirmed? TheTC74HC08AP seems unstable at 5V, perhaps I need a real I'd expect it to work but the PPS might be compromised, too slow. But maybe you should use a corre

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Hi All, I damaged IC1 74ACT08, it got over zapped with 12V, I replaced with an TC74HC08AP, as it had the same pin out, (not all Quad AND gates do), the LM 317 survived. However if I run at 5V the yell

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I have upgraded QCXs to 1.07a, but no, I don't operate WSPR mode. I was hoping that with additional details though, someone would be more likely to recognize something. And I see Nigel D has posted a

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I have a QCX+ that runs WSPR on 17m. Normally calibration with GPS occurs after a transmission. If GPS lock (one second pulse) is not achieved the QCX waits patiently for it and when a lock is achieve

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Hi Mont, The issue started when I upgraded the firmware in my QCX to 1.07a. I have seen no issues with my Minis and QCX plus. It is a a 17 meter QCX. The green light takes much longer to come on in th

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"...when using WSPR mode there is no need to "manually" calibrate the QCX via menu options" Absolutely right, Mont, as usual. I do a manual cal and clock set most of the time just to move things along

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Not sure how/when you experience this.. Can you provide more details, and steps to reproduce? The Known Issue is with the QCX, not the QLG1/2/2-SE. The data from all three versions of QL GPS all look/

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You can press the enter button if the OLG-1 stalls in WSPR and it jogs it into operation. Or you can order the new GPS. I ordered the new GPS. Hopefully resolving a KNOWN ISSUE.

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Terrific Julian. Thanks. Have you found that the OLG-1 can hang up in WSPR mode with a waiting indicator. It may be dependent on Frequency. My problems were not as difficult on the lower bands,

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I find that it never does that when the unit is in practice mode, so when I calibrate a unit and set time ready to run WSPR, I simply put the unit into practice mode first. Once calibrated, I turn off

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OK now both are working the OLG1 and the OLG2-sc.... Don't know why. Satellite acquisition?

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Hi Hans and all, My upgrade to 1.07a with an OLG-1 results in waiting in WSPR and alignment. Rocking back and forth doesn't ix the problem in alignment. Should I upgrade to the new GPS? Anyone have su

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I was a little disappointed to see menu 8.13 removed... but understandably, Hans needed the code space for more important features. GPS status was unnecessary for normal operations, so it was a good c

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Hi Colin This is a known issue, it has always been present in QCX firmware but it was somewhat more hidden when the GPS Info display was available. You can resolve it easily just turning the rotary en

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Hi all, Maybe someone already ran into this problem before and can help me out... Canvassed the group for a related topic, but did not find any. Here is the story: After long procrastination I decided

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