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Identify a suspect PDP8/???

jhalbrecht

Experienced Member
Joined
Mar 25, 2015
Messages
93
Location
Mesa, Az
Can anyone help me definitively identify this PDP 8? It has a F front panel, but I've been told that it's actually an M. Looking for a couple sources to cite. Ohh... And I'd like to sell it if you're interested...

IMG_7232.jpg IMG_7233 1500.jpg IMG_7237.jpg

There are more images on this CraigsList ad.


Thanks, - Jeff
 

AK6DN

Veteran Member
Joined
Aug 23, 2010
Messages
984
Location
Silicon Valley USA
It is a PDP-8/F. Small box with one backplane like the /M, but it is the /F box. The /F power supply is on the left. On the /M the power supply is at the rear and the case fans are on the left.

Besides the label on the back panel says PDP-8/F, as well as the front panel. Why do you not believe those? The /F is a perfectly valid model.
 

jhalbrecht

Experienced Member
Joined
Mar 25, 2015
Messages
93
Location
Mesa, Az
It is a PDP-8/F. Small box with one backplane like the /M, but it is the /F box. The /F power supply is on the left. On the /M the power supply is at the rear and the case fans are on the left.

Besides the label on the back panel says PDP-8/F, as well as the front panel. Why do you not believe those? The /F is a perfectly valid model.

Thanks for the info. The person who tried to tell me it was an 'M' recanted. I just wanted to be sure I was posting accurate information.

I read on Doug Jones site that starting with 'E' they used switching supplies. Is 'F' sequential? 50lbs - I doubt that's a switching supply in my 'F'

- Jeff
 

AK6DN

Veteran Member
Joined
Aug 23, 2010
Messages
984
Location
Silicon Valley USA
The 8E uses a linear regulator +5V power supply. The 8F and 8M use a switching regulator +5V power supply design. 8F and 8M just have a different form factor layout in the box is all.

Don
 

NicDEC

New Member
Joined
Jul 8, 2019
Messages
4
Location
Cumming, GA
Jeff,

I have recently started looking to get a PDP-8 after having built a PiDP-8 and had a chance to do some toggling. Do you have a list of the card in the system? It's hard to tell from the pictures which are present. Also I see what appears to be the same system listed on ebay at a different price from the craigslist add. Are both from you?
 

NicDEC

New Member
Joined
Jul 8, 2019
Messages
4
Location
Cumming, GA
Jeff,

I would be interested in this unit if you could provide more details on what cards are present. I also see what appears to be the same item listed on ebay, is that listing also yours?.

Thanks
 

jhalbrecht

Experienced Member
Joined
Mar 25, 2015
Messages
93
Location
Mesa, Az
Jeff,

I would be interested in this unit if you could provide more details on what cards are present. I also see what appears to be the same item listed on ebay, is that listing also yours?.

Thanks

The PDP 8/f that I listed on Craigslist and ePay sold on ePay. Unfortunately I didn't have email notifications turned on for my own thread and saw your questions after the auction ended. sorry about that.
 

NicDEC

New Member
Joined
Jul 8, 2019
Messages
4
Location
Cumming, GA
Jeff,

No worries. I was a little slow linking together the listings in my head otherwise I would have asked on eBay. I'm sure I'll have another chance at one in the future. Thanks for updating here though.
 
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