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Heathkit 20MHz Dual Trace Oscilloscope model 4221, US $1700 – Picture 0
Heathkit 20MHz Dual Trace Oscilloscope model 4221, US $1700 – Picture 1
Heathkit 20MHz Dual Trace Oscilloscope model 4221, US $1700 – Picture 2
Heathkit 20MHz Dual Trace Oscilloscope model 4221, US $1700 – Picture 3
Heathkit 20MHz Dual Trace Oscilloscope model 4221, US $1700 – Picture 0
Heathkit 20MHz Dual Trace Oscilloscope model 4221, US $1700 – Picture 1
Heathkit 20MHz Dual Trace Oscilloscope model 4221, US $1700 – Picture 2
Heathkit 20MHz Dual Trace Oscilloscope model 4221, US $1700 – Picture 3

Heathkit 20mhz Dual Trace Oscilloscope Model 4221

US $1700

  • Columbia City, Indiana, United States
  • Feb 15th
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This is a nice oscilloscope that appears to work fine.There are no phosphorus marks on the screen and the calibration signal appears correct. It has 2 lines singles that can be displayed separately or used as X-Y inputs. (An additional Z input is one the back, I assume that does brightness?) It can be triggered from one of the inputs or from a separate external trigger source. I don't know a lot about it.
Condition:
Used: An item that has been used previously. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a floor model or store return that has been used. See the seller’s listing for full details and description of any imperfections. ...
Brand Heathkit

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