[GreenKeys] [External] Re: anyone know the details of this unit?

[Nick England]

Your photo shows the tag for BRPEB 6, which is the base, not the actual
BRPE. Several different configurations were fitted to that base.

Nick England K4NYW
www.navy-radio.com


On Fri, Mar 28, 2025 at 12:24 PM Nick England <navy.radio at gmail.com> wrote:

> See here for the info you seek….
> https://www.navy-radio.com/tty/brpe.htm
>
>
> Nick England K4NYW
> www.navy-radio.com
>
>
> On Fri, Mar 28, 2025 at 12:13 PM W2HX <w2hx at w2hx.com> wrote:
>
>> Doug, what does the nomenclature plate on your 6-bit units say? Does it
>> say "BRPE8 6"? do we know what an 8-level BPRE name plate says?
>>
>>
>>
>>
>> 73 Eugene W2HX
>> My Youtube Channel: https://www.youtube.com/@w2hx/videos
>>
>>
>>
>>
>> ------------------------------
>> *From:* Jones, Douglas W <douglas-w-jones at uiowa.edu>
>> *Sent:* Friday, March 28, 2025 12:04 PM
>> *To:* Eric Moore <mooreericnyc at gmail.com>; W2HX <w2hx at w2hx.com>
>> *Cc:* Greenkeys <greenkeys at mailman.qth.net>
>> *Subject:* Re: [External] Re: [GreenKeys] anyone know the details of
>> this unit?
>>
>> From: Eric Moore <mooreericnyc at gmail.com> -- Friday, March 28, 2025
>> 10:53 AM
>>
>> > 3) maybe, take a pic of the bottom and see how many resistors are
>> installed?
>>
>> I have 2 6-bit advanced-feed-hole BRPE's I am merging to make an 8-bit
>> BRPE.  Both were manufactured with all 8 resistors (and diodes) in the base
>> and with wiring for 8-bit data.  The extra wires are taped and bundled.
>> So, aside from getting or making an 8-bit punch block, all I have to do is
>> move solenoids, linkages and whatnot from one to the other.
>>
>> The knob on top of the case of the mystery BRPE is something I wouldn't
>> have imagined.  The top of the case just lifts off, and having a knob and
>> wiring linking it to the guts is unexpected.
>>
>> Yes, the BRPE is a high-speed parallel punch.  It can be geared (or
>> timing belted) to punch at rates from 60 to over 100 characters per
>> second.  Really interesting linkages are required to run a punch that fast.
>>
>> I've been writing notes on my BRPE project here:
>> -- https://homepage.cs.uiowa.edu/~dwjones/pdp8/UI-8/bugs.shtml#69
>>
>>                Doug Jones
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