Heathkit IB -1103 Frequency Counter NIXIE 180MHz test teardown

Manual it is from 1973 so i eastimate this unit is from about that time too,
8 digit Nixie counter, spec 180MHz mine works all the way up to 240MHz so there is a bit margin :-)
not a lot of decoupling capacitors, nixie voltage was single phase doubled = pulsating 0-200V schematic say 100V like you will read with a slow avarage voltmeter, screen blinks on camera so bad, i had to fix to run on nice clean DC, this means I also had to change all anode resistors too,
but wow it was worth it, now it is super nice and flicker free.
(this is my number 9 Heathkit video :-)
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#tube
#teardown
#heathkit
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I use auto generated subs, I go thru them my self, but i am far from perfect at finding all errors, so if you find errors worth fixing, please comment (or PM) with the TIME in the video you saw the error, i will be happy to fix it. This also apply to the Danish version.
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