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Vintage Test Gear and Workshop Equipment For discussions about vintage test gear and workshop equipment such as coil winders. |
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17th Dec 2021, 8:04 pm | #1 |
Heptode
Join Date: May 2015
Location: Bradford, West Yorkshire, UK.
Posts: 512
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Taylor 68A alignment.
Has anyone ever done a calibration of the scale and bands on one of these?
The one I have works perfectly, the only time I have been inside it was to change out the Belling-Lee for a reliable N-type RF connector. I noticed that the scale is a bit out on some bands, especially the low ones, is it an easy job just to tweak the coils and get the scale to read correctly?
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17th Dec 2021, 9:18 pm | #2 |
Dekatron
Join Date: Apr 2009
Location: Oxfordshire, UK.
Posts: 4,934
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Re: Taylor 68A alignment.
The old workshop sig gens were not at all precision instruments, nor did they have particularly fine tuning. In % terms what is a "bit out"? Is this for your 1977kHz project?
B
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17th Dec 2021, 9:44 pm | #3 |
Dekatron
Join Date: Apr 2009
Location: Oxfordshire, UK.
Posts: 4,934
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Re: Taylor 68A alignment.
My 68A, set as close as I can to 2000kHz, is actually radiating at 2010kHz, though it is still warming up. I think that's pretty good for that type of sig gen . As for re-alignment, maintaining the tracking is the key issue and I've not tried it on this unit.
B
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Saturn V had 6 million pounds of fuel. It would take thirty thousand strong men to lift it an inch. |
18th Dec 2021, 11:50 am | #4 |
Heptode
Join Date: May 2015
Location: Bradford, West Yorkshire, UK.
Posts: 512
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Re: Taylor 68A alignment.
Not really Bazz, I only noticed the offset when I connected up a frequency counter to set 470kHz, a quick tune around showed waverings. Thanks
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18th Dec 2021, 12:52 pm | #5 |
Octode
Join Date: Jul 2017
Location: Newcastle Upon Tyne, Tyne & Wear, UK.
Posts: 1,181
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Re: Taylor 68A alignment.
Calibrating your Taylor should be straightforward. I was able to calibrate my Advance E2 earlier this year with a frequency counter. I'm confident to say that it is more accurate now than when it left the factory.
You'll need to identify which capacitor/coil pair sets each band. Lining up the pointer and dial might be tricky; I have not seen the inside of a Taylor so I can't comment. If it is anything like my E2 your Taylor might just need a long reach screwdriver to undo the pointer. |
18th Dec 2021, 2:14 pm | #6 | |
Dekatron
Join Date: Apr 2009
Location: Oxfordshire, UK.
Posts: 4,934
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Re: Taylor 68A alignment.
Quote:
I left mine on for 3 hours night and it barely moved as it warmed up on 2010kHz. They are a very good old workshop sig-gen. I have been inside, but not to change alignment. B
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18th Dec 2021, 6:18 pm | #7 |
Heptode
Join Date: May 2015
Location: Bradford, West Yorkshire, UK.
Posts: 512
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Re: Taylor 68A alignment.
I don't mean fault sort of wavering. I mean between the ranges, 470kHz was 467 on the scale, 1.8mHz was 1.9 on a different scale, same on 3.5mHz was 3.6 on another scale, just little niggles, too perfectionist
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