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Author Topic: Heathkit SB 620  (Read 6922 times)
KG4BZW
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Posts: 2




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« on: December 22, 2013, 06:28:51 PM »

I am trying to restore a Heathkit SB 620 Scanalyzer and need to replace the 3RP7 CRT but I can't find one. Can anyone help??  Thanks....Dave KG4BZW
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W9GB
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Posts: 3160




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« Reply #1 on: December 23, 2013, 04:19:34 AM »

Dave -

Do you understand CRT numbering system?
http://patriotgaming.com/manuals/gaming_monitors/sencore_instruments/CR7000/TT145-4029.pdf

3RP7 :

"3" inch diameter (or diagonal for rectangular tubes)
"R" series
"P7" Phosphor : (Zn,Cd)S:Cu; Blue with Yellow persistence; 558,440 nm
Long   Persistence; Typical CRT Usage - Radar PPI, old EKG monitors

Post query in Antique Radio Forums.
http://www.antiqueradios.com/forums/viewtopic.php?t=82789

Sphere (British Columbia, Canada) routinely carries a variety of surplus CRT used in Scopes.
http://www.sphere.bc.ca/test/crts.html
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W9GB
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Posts: 3160




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« Reply #2 on: December 23, 2013, 04:39:30 AM »

CRT Solutions
http://crtsolutions.highwire.com
1317-1011 Upper Middle Rd. East
Oakville, Ontario
L6H-5Z9
Canada
http://crtsolutions.highwire.com/contactus/

3RP7, $149.00
http://crtsolutions.highwire.com/product/3rp7

The earlier Heathkit HO-13 "Ham-Scan" used a 3RP1 CRT with a Yellow filter.
The 3RP1 was a popular CRT for Heathkit, used in many if their O'scopes.

Sphere has sockets and some Chinese 3RP1 CRT.
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JOHND393
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Posts: 6




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« Reply #3 on: March 04, 2014, 02:44:23 PM »

I have a couple 3RP1A CRT tubes. If you think a 3RP1A will work and still need a CRT, I'll sell one cheap, plus shipping from 46385.
I think these tubes were used in the Heathkit Vector Scope.
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W8JI
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Posts: 9749


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« Reply #4 on: March 07, 2014, 03:35:24 PM »

I am trying to restore a Heathkit SB 620 Scanalyzer and need to replace the 3RP7 CRT but I can't find one. Can anyone help??  Thanks....Dave KG4BZW

You want a whole Scanalyzer from 1975 that has been laying in my attic for the price of a CRT?

If so, I'll get it down and see if it still runs.
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KD0REQ
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Posts: 2087




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« Reply #5 on: March 08, 2014, 12:46:08 PM »

I'll get in line if you want to sell that 620 and he doesn't want it .
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