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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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10th Oct 2019, 8:27 pm | #1 |
Rest in Peace
Join Date: Mar 2011
Location: Basildon, Essex, UK.
Posts: 4,100
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Black Star Meteor 100 Frequency meter
Is there any way that one of these frequency meters can be checked and calibrated?
thanks Mike |
11th Oct 2019, 12:12 am | #2 |
Nonode
Join Date: Aug 2007
Location: South Bradford, West Yorkshire, UK.
Posts: 2,574
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Re: Black Star Meteor 100 Frequency meter
Back in the analogue TV days I checked mine against the colour subcarrier oscillator in a TV. Unfortunately this is not possible today!
Could you get hold of a GPS module? I believe many of these have an accurate reference frequency output. Keith |
11th Oct 2019, 8:02 am | #3 |
Octode
Join Date: Sep 2004
Location: St. Albans, Hertfordshire, UK.
Posts: 1,478
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Re: Black Star Meteor 100 Frequency meter
Do you have an RF signal generator? If so you can tune it to zero beat with a standard am broadcast signal (using a normal receiver) and then transfer its output to the counter.
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Regards, Richard, BVWS member |
11th Oct 2019, 9:56 pm | #4 |
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Join Date: Mar 2011
Location: Basildon, Essex, UK.
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Re: Black Star Meteor 100 Frequency meter
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12th Oct 2019, 10:26 am | #5 |
Octode
Join Date: Dec 2010
Location: St Ives, Cambridgeshire, UK.
Posts: 1,180
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Re: Black Star Meteor 100 Frequency meter
Mike the service manual gives you the circuit and components needed so you can add an external 10MHz reference connection if you wish.
The manual is on the forum https://www.vintage-radio.net/forum/...ad.php?t=48608 Andrew
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Invisible airwaves crackle with life. Or they should do. BVWS Member |
12th Oct 2019, 12:51 pm | #6 |
Nonode
Join Date: Aug 2007
Location: South Bradford, West Yorkshire, UK.
Posts: 2,574
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Re: Black Star Meteor 100 Frequency meter
Wow over 1400 views of the user and service manuals. Looks like a popular frequency meter!
Keith |
12th Oct 2019, 2:52 pm | #7 |
Rest in Peace
Join Date: Mar 2011
Location: Basildon, Essex, UK.
Posts: 4,100
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Re: Black Star Meteor 100 Frequency meter
I tried the method described by Dickie and it seems the adjustment is at its maximum.
I used radio Caroline on 648 as a source to set my RF oscillator to. I would have used 198 but for some reason my meter shows this as 98 leaving out the 1. This was before I saw the service manual so I will have another check to see if the voltage trimmer needs to be tweaked. But I think it is better now anyway. Thanks guys. |
12th Oct 2019, 3:36 pm | #8 | |
Heptode
Join Date: Jan 2008
Location: Shrewsbury, Shropshire, UK.
Posts: 846
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Re: Black Star Meteor 100 Frequency meter
Quote:
I note that you previously said you were in possession of some other Black Star models... Might you by chance have anything on the Black Star 1325 counter? I've tried everywhere for any info. Thanks, David. Last edited by Vintage Engr; 12th Oct 2019 at 3:37 pm. Reason: Removed gremlin! |
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12th Oct 2019, 9:57 pm | #9 |
Nonode
Join Date: Aug 2007
Location: South Bradford, West Yorkshire, UK.
Posts: 2,574
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Re: Black Star Meteor 100 Frequency meter
The only other Black Star instrument I have is the Jupiter 500 function generator but I only have the user manual for this.
Keith |
13th Oct 2019, 4:34 pm | #10 |
Heptode
Join Date: Jan 2008
Location: Shrewsbury, Shropshire, UK.
Posts: 846
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Re: Black Star Meteor 100 Frequency meter
Thanks for looking.
David. |