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[Amps] HP 120B Oscilloscope For Sale

To: Boatanchors List <BOATANCHORS@LISTS.TEMPE.GOV>, amps@contesting.com
Subject: [Amps] HP 120B Oscilloscope For Sale
From: Robert Groh <rgroh@swbell.net>
Date: Tue, 2 Mar 2010 16:17:58 -0800 (PST)
List-post: <amps@contesting.com">mailto:amps@contesting.com>
I've been on a 'fix 'em up and get them out the door' frenzy lately and this HP 
120B scope is one item that I am (reluctantly) going to sell (now that I have 
my Tek 465 working again).  Although the limited frequency response is a bit of 
a limitation, it still works well as a general purpose scope and it should also 
make a decent monitor. 

Pictures on the web at:
<http://picasaweb.google.com/bob.groh/HPScope?feat=directlink>

This is a Hewlett Packard 120B vintage, all tube, single channel oscilloscope 
(original design circa 1965). General specifications are as follows:
Single channel
Vertical 
   Frequency response:   DC to 450 KHz
   Sensitivity: 10 mV/cm to 100 V/cm
   Internal (automatic) calibrator
   Input Impedance  1 Meg ohm and 50 pF
Sweep  
   Range  1 us/cm to 0.5 sec/cm
   Auto and manual triggering
Horizontal
    Frequency Response dc to 300 KHz
   Sensitivity: 0.1 V/cm to 100 V/cm
   Input Impedance  1 Meg ohm and 100 pF

I have an old EICO scope probe I am using with it (you can see the probe just a 
bit in the bottom of the first picture on the web) and that will be included 
with the scope.  

Manual - I am including a photo copy of the original HP manual. It includes 
operation, maintenance, has schematics, etc. Should be easy to keep it running! 
 Easy to work on as you can see from the pictures. This is all original but 
still seems to work like a champ. I have run it for probably 10 hours in the 
last couple of weeks with no problems at all. 

Price: $ 45 plus shipping costs. This includes the copy of the manual and the 
EICO scope probe. Shipping weight will be about 45 lbs (UPS Ground or USPS 
Parcel Post) from zip 64014.  

Contact me directly at <rgroh@swbell.net> if you are interested and I'll shoot 
you a firm shipping cost.

73
Bob Groh, WA2CKY
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