[Boatanchors] USS Midway notes

[howard holden]

The model 28 could run at either 60 or 100 WPM (and maybe 75 also). MOST  but not all Navy units were run at 100 WPM. A typical installation for a 28 would be in association with a KW-7 crypto box, which actually spit out text at slightly faster than 100 WPM, in small groups of characters. Thus the 28 would run at, say, 102 WPM for  2-3 seconds, pause briefly, then repeat.  When this was the setup, it was generally hardwired to the KW-7. The KW-7 could be patched to various RX/TTY converters. 

Often orderwires, or internal dedicated links between various parts of a comm installation, were run at 60 WPM. Don't know why. Why would the USAF use 60 WPM and not 100???

Howie WB2AWQ ex Navy CW op NAW and NGR late 60s
  ----- Original Message ----- 
  From: mikea<mailto:mikea at mikea.ath.cx> 
  To: boatanchors at mailman.qth.net<mailto:boatanchors at mailman.qth.net> 
  Sent: Tuesday, March 01, 2011 12:25 PM
  Subject: Re: [Boatanchors] USS Midway notes


  On Tue, Mar 01, 2011 at 08:17:17PM +0000, LARRY D GODEK wrote:

  > Lots of TTY stuff setting around on display and it looked to me that
  > once it was found out where the wiring ran to, (a common rack?) that
  > this would be fun to get running. 28 ASR's, one at least with a separate
  > reperf under the cover, a bunch of rack or shelf 28 RO's and a couple of
  > KSR's rounded out the livery. Numerous 28's in the back rooms that had
  > been run and checked out for spares.

  > Can anyone tell me what speed the 28's ran at. Were there different
  > speeds depending on whether they were running on an internal shipboard
  > circuit or external to the ship. I'd think maybe 100WPM would have been
  > a standard but i don't know. Did all machines in the main receiver room
  > terminate at one patch panel bay or were they wired direct to another
  > machine somewhere else on the ship? Lots a questions on this. Come on you
  > Navy ET's.

  Not Navy, but USAF. Our circuits all ran at 45.45 Baud (60 wpm). 

  -- 
  Mike Andrews, W5EGO
  mikea at mikea.ath.cx<mailto:mikea at mikea.ath.cx>
  Tired old sysadmin 
  SSGT, USAF, 1967-1971
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