Editing Krown Porta-printer

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{{infobox dkeyboard
| name         = Krown Porta-printer keyboard
| image name   = 
| pn           = 
| fcc          = 
| branding     = 
| manufacturer = 
| features     = 
| switch       = [[Datanetics DC-50 series]]<br>[[Futaba MD series]]
| layouts      = Proprietary
| interface    = 
| weight       = 
| years        = 
| switch mount = [[PCB mount]]
| keycaps      = [[Double-shot]] [[spherical keycap|spherical]]
}}

'''Krown Porta-printer''' is a series of portable [[Wikipedia:Teleprinter|teleprinters]] intended for use by the deaf and hard of hearing. The Porta-printer and Porta-printer II each comprised a [[40%]] keyboard together with a miniature printer and an acoustic coupler.

==Keyboard==
The original Porta-printer and Porta-printer II keyboards used [[Datanetics DC-50 series]] switches; this was followed by a keyboard using [[Futaba MD series]] switches. Both keyboards were designed by Meryl Miller.<ref name="conv-MM" />

===Datanetics switch versions===
====Porta-printer====
The 1975 original keyboard had dark grey keycaps.

====Porta-printer II====
The 1977 Porta-printer II keyboard switched to ivory keycaps. The PCB below bears the legend "KROWN RESEARCH BAUDOT KEYBOARD", along with "REV E" and "BAU-EKB-1-774".

<gallery widths=250 heights=187>
File:Krown Porta-printer II (Datanetics) -- top.jpg               | Top
File:Krown Porta-printer II (Datanetics) -- top with switches.jpg | Top, showing switches
File:Krown Porta-printer II (Datanetics) -- LHS with switches.jpg | Left-hand side, with switch close-up
File:Krown Porta-printer II (Datanetics) -- RHS.jpg               | Right-hand side, marked "REV E" and "BAU-EKB-1-774"
File:Krown Porta-printer II (Datanetics) -- IC dates.jpg          | IC dates (7709 and 7651)
</gallery>

===Futaba switch version===
The Datanetics Porta-printer II keyboard was followed by a version with ivory/black Futaba MD series switches. The same keycap manufacturer appears to have been used, as the keycaps are identical in design to those in the previous two keyboards.

<gallery widths=250 heights=187>
File:Krown Porta-printer II (Futaba) -- switches, side.jpg | Side view of switches
File:Krown Porta-printer II (Futaba) -- switches, top.jpg  | Top view of switches
</gallery>

==External links==
*Southwest Museum Of Engineering, Communications and Computation — [https://www.smecc.org/krown_research___krown_manafacturing.htm Krown Research / Krown Manafacturing]

==References==
<references>
<ref name="conv-MM">Correspondence with Meryl Miller, 2016-12-01–02</ref>
</references>

[[Category:Krown keyboards]]
[[Category:40% keyboards]]
[[Category:Keyboards with Datanetics switches]]
[[Category:Keyboards with Futaba MD switches]]
[[Category:Teleprinters]]
[[Category:List of all keyboards]]