[vcf-midatlantic] Does anyone know the substitute germanium transistor for a B1182

[corey cohen]

I wish I could send a picture to this thread but I got the part number from the actual board not the maintenance book or pdf.  I checked both the physical book and the online pdf’s and Q106 isn’t actually listed in the parts list but is on the diagram and obviously actually there.  

Cheers,
Corey 
corey cohen
uǝɥoɔ ʎǝɹoɔ
Sent from my iPhone

> On Jan 17, 2024, at 2:21 PM, Herbert Johnson via vcf-midatlantic <vcf-midatlantic at lists.vcfed.org> wrote:
> 
> 
>> 
>>>>> I tried to find a cross-reference to B1182 transistor which is Q106 on the video board.
>>>>> This is a Germanium transistor in what seems to be a TO-66 case.
> 
> There's conflicting references to (2S)B1182 transistors or replacements as Silicon devices or germanium devices.
> 
> This device is on the video board of the ADM3A. So the video board (not CRT) could be from Ball or Motorola or other suppliers. It would be informative to identify the monitor/video board brand/model. Ideally a schematic of the video board showing the part.
> 
> also: A dead or good Ge transistor, will have a .2 or .3 volt drop across either junction (emitter base, base collector) with a "diode tester" voltmeter. A Si transistor shows .6 or .7 volt drop.
> 
> Regards Herb
> Herbert R. Johnson, New Jersey USA
> https://www.retrotechnology.com OR .net
> preserve, recover, restore 1970's computing
> email: hjohnson AT retrotechnology DOT com
> or try later herbjohnson AT comcast DOT net