Hickok 539C Tube Tester
New Simpson Bias Meter
AC Line & Bias Jacks for Digital Meters 
Bias Fuse
Solid State 83 and 5Y3GT Tubes
Clean & Calibrated
 
See pictures 6, 7, 8, 9 for calibration specs, some additional notes, and relative information for this 539C. 
Hickok 539C with a New Simpson bias meter. Optional Bias & AC Line Jacks for Digital Meters. 
Late Model that is Calibrated & Clean.
All the analog meters are accurate. 
New capacitors and protection diodes for the meter. 
Bias fuse added. 
Your choice of wood case it is currently in for the pictures, or the metal case seen in 2 pictures. 
The custom Hickok Case seen in the last picture is an additional cost and not included unless purchased. 
 
This 539C can be adjusted to work on 230 volts. Directions are in the manual.
 
See pictures 6 thru 9 for calibration specs and information that includes the added bias and AC line jacks for this 539C. These pages should tell you all you need to know about this 539C.
 
No trick to use the jacks just plug in a multimeter or other accurate DCV digital meter in the 2mm sockets, red to positive and black to negative (bias set to read  negative voltage as applied), and it will read the actual DC bias voltage being applied in the test. Same with the AC line jacks except positive and negative does not matter; just plug in a multimeter or accurate digital ACV meter in the 2mm plugs and it will read the actual AC voltage.
 
Please see the calibration information in the pictures.
The Fluke and other Multimeters seen in the photos are not included and shown for demonstration purposes only!
 
Please see the calibration information in the pictures.
 
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Please contact in advance of purchase for shipping costs internationally. The cost for shipping in the USA will be deducted from the total cost of shipping when shipped internationally.