Differences
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564vco [2016/12/14 08:46] n1eu created |
564vco [2016/12/14 08:53] n1eu |
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1) Don’t adjust anything unless you need to. I tried to pull the VCXO to get it closer to the specified 5.00000 MHz and ended up with a condition in which the VCXO would tune almost the right amount but the wrong direction, giving an effect a lot like one would see if a bit were stuck on the BCD encoder only worse - kind of like a hundred whistles blowing by you and you’re hearing the Doppler shift of each one as it passed by when you tuned across a carrier. | 1) Don’t adjust anything unless you need to. I tried to pull the VCXO to get it closer to the specified 5.00000 MHz and ended up with a condition in which the VCXO would tune almost the right amount but the wrong direction, giving an effect a lot like one would see if a bit were stuck on the BCD encoder only worse - kind of like a hundred whistles blowing by you and you’re hearing the Doppler shift of each one as it passed by when you tuned across a carrier. | ||
- | 2) Finding a process for the Omni 5, using Barry’s reference, I was able to get this back to working, but only after I reset the coil L6 back to where it was, and then I painstakingly twiddled until the VCO went just 10 Hz when told to do so, not more, not less, or I would hear steps in the tuning. | + | 2) Finding a process for the Omni 5 (see [[http://tentecwiki.org/doku.php?id=562pllalign|wiki page]] I was able to get this back to working, but only after I reset the coil L6 back to where it was, and then I painstakingly twiddled until the VCO went just 10 Hz when told to do so, not more, not less, or I would hear steps in the tuning. |
3) As mentioned above, a DVM is not your friend on one of these. | 3) As mentioned above, a DVM is not your friend on one of these. |