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The Tektronix 513 is a single-channel monolithic oscilloscope with 18MHz bandwidth.  
{{Oscilloscope Sidebar |
title=Tektronix 513 |
summary=18 MHz scope |
image=513d front.jpg |
caption=Tektronix 513D front |
years=1950 - ? |
manuals=
* [http://bama.edebris.com/download/tek/513/Tek%20513.pdf Tektronix 513 Manual (PDF)]
* [http://w140.com/Tek_1949_Sales_Brochure.pdf 1949 Tek Sales Brochure Mentioning the 513 (PDF)]
}}
 
The Tektronix 513 is a single-channel monolithic oscilloscope with 18 MHz bandwidth.  
It was announced in 1949 and [[introduced in 1950]].   
It was announced in 1949 and [[introduced in 1950]].   
It used a [[5XP]] CRT initially, and then switched to a Tek-made CRT.
It used a [[5XP]] CRT initially, and then switched to a Tek-made CRT.
It was the first Tektronix oscilloscope to contain a [[distributed amplifier]].   
It was the first Tektronix oscilloscope to contain a [[distributed amplifier]].   
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the [[517]] in 1951 and then the [[541]] and [[545]] in 1955.
the [[517]] in 1951 and then the [[541]] and [[545]] in 1955.


The initial announcement in 1949 (link below) listed the 513 at $1695, weighing 60 pounds,
The initial announcement in 1949 (link below) listed the 513 at $1695, weighing 60 pounds, with a low frequency cutoff of 5 Hz.  As delivered to customers in 1950,
with a low frequency cutoff of 5 Hz.  As delivered to customers in 1950,
the 513 weighed an extra 15 pounds, but had flat response down to DC and cost a bit less than: $1650 with the delay line or $1600 without.
the 513 weighed an extra 15 pounds, but had flat response down to DC and cost a bit less than: $1650 with the delay line
or $1600 without.


The input impedance is 1 Megohm in parallel with 40pF.   
The input impedance is 1 MΩ in parallel with 40 pF.   
The scope provides power to an optional cathode-follower probe.   
The scope provides power to an optional cathode-follower probe.   
The 513D has a delay line; the 513 does not.   
The 513D has a delay line; the 513 does not.   
The 513 and 513D contain a distributed vertical output amplifier  
The 513 and 513D contain a distributed vertical output amplifier  
made of [[6CB6]] tubes.  The 513 has no [[thermal cutoff]] and  
made of [[6CB6]] tubes.  The 513 has no [[thermal cutoff]] and  
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"The 513D used two different CRT types, depending on instrument serial
"The 513D used two different CRT types, depending on instrument serial
number. From serial number 101-1887, the 5XP2 was used (Tek Part Number
number. From serial number 101-1887, the 5XP2 was used (Tek Part Number
154-066). From serial number 1888-up, the T51P2 was used (Tek pn 154-081).
154-066). From serial number 1888-up, the [[T51P2]] was used (Tek pn 154-081).
This one was made by Tek and you could retrofit it into the early 513Ds that
This one was made by Tek and you could retrofit it into the early 513Ds that
came with the Dumont 5XP but it required a modification kit (040-0094-00).
came with the Dumont 5XP but it required a modification kit (040-0094-00).
I have the instructions if you need them. Later, the 154-081 (also known as
I have the instructions if you need them. Later, the 154-081 (also known as
154-0081-00) was replaced by the 154-0342-00 which is quite common and also
[[154-0081-00]]) was replaced by the 154-0342-00 which is quite common and also
used in the 530 series of scopes. If your 513D serial number is below 1888,
used in the 530 series of scopes. If your 513D serial number is below 1888,
the mod kit will have to be installed if you want to use this tube. I did
the mod kit will have to be installed if you want to use this tube. I did
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The 513 weighs 75 pounds and uses a maximum of 580 watts.
The 513 weighs 75 pounds and uses a maximum of 580 watts.


* [http://bama.edebris.com/download/tek/513/Tek%20513.pdf Tektronix 513 Manual (PDF)]
==Specifications==
* [http://w140.com/Tek_1949_Sales_Brochure.pdf 1949 Tek Sales Brochure Mentioning the 513 (PDF)]
[[Category:Specifications needed]] ''please add''
 
==Pictures==
<gallery>
<gallery>
Image:513d front.jpg
Image:513d front.jpg
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Image:Tek 1949 Sales Brochure 513.png|Announcement in 1949 Sales Brochure
Image:Tek 1949 Sales Brochure 513.png|Announcement in 1949 Sales Brochure
</gallery>
</gallery>
[[Category:Tube scopes]]

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