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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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1st Sep 2020, 4:26 pm | #1 |
Heptode
Join Date: Jan 2009
Location: West Lothian, UK.
Posts: 760
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Specification or manual for Solartron CR561 75 Ohm attenuator (1950s)
Had this attenuator for decades and thought it was time to test it before passing it on.
I suspect it is only usable at audio frequencies. The diecast alloy box has .1" thick walls and the thing weighs over 2lb. Note the tin whiskers on two of the screening plates. The resistors are all Painton type 93 - would also appreciate any spec on them.
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George |
1st Sep 2020, 7:31 pm | #2 |
Octode
Join Date: Nov 2011
Location: Manchester, UK.
Posts: 1,872
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Re: Specification or manual for Solartron CR561 75 Ohm attenuator (1950s)
I have three of those which look just the same, but they are labelled 'Attenuator 600 ohms AT201'. Mine have coax sockets in and out. Given where they came from, mine were used for AF work. More than 30 years ago.
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9th Sep 2020, 4:51 pm | #3 |
Heptode
Join Date: Jan 2009
Location: West Lothian, UK.
Posts: 760
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Re: Specification or manual for Solartron CR561 75 Ohm attenuator (1950s)
I have now located a manual for the attenuator(s) - photographed the four pages and attached for anyone else.
My model uses type Painton 93 resistors not type 73 in the parts list - no idea what the difference is so will ask in another post. Incidentally the manual was located in a box in the loft...
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George |
9th Sep 2020, 5:32 pm | #4 |
Dekatron
Join Date: Nov 2003
Location: Heckmondwike, West Yorkshire, UK.
Posts: 9,637
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Re: Specification or manual for Solartron CR561 75 Ohm attenuator (1950s)
Thread moved to Vintage Test Gear for archive.
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16th Sep 2020, 9:27 am | #5 |
Octode
Join Date: Oct 2007
Location: Exeter, Devon, UK.
Posts: 1,553
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Re: Specification or manual for Solartron CR561 75 Ohm attenuator (1950s)
for buggies: AT201 - CR561 specification from 1960 attached. Thanks for posting manual. wme_bill
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16th Sep 2020, 6:53 pm | #6 |
Heptode
Join Date: Jan 2009
Location: West Lothian, UK.
Posts: 760
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Re: Specification or manual for Solartron CR561 75 Ohm attenuator (1950s)
Thanks for that Bill.
The only catalogue I kept was the '73-'74 hardback (olive green) one which included too much other Schlumberger stuff for my liking.
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George |