[GreenKeys] yea bay has LRSB 28 series serial to parallel conv? mechanical style!

[Nick England]

LRSB is the base - LRS is the receiving selector mechanism. Sorry I don't
have a manual (276B and 573-138-100TC?), but the wiring diagram is here -
http://www.virhistory.com/navy/manuals/tty/573-138-400-6112.pdf
I found a spec sheet here -
https://en.wikipedia.org/wiki/Teletype_Model_28

The LRSB base was also used for the LD transmitting distributor which was
the parallel-in, serial-out counterpart to this LRS serial-in, parallel-out
device.
http://www.virhistory.com/navy/tty/td/lrsb-01.bmp

These were handy devices in a semi-automatic tape relay system

There were M35 8 level versions as well.

Here's the brief description of the LRS from the WE RS specs -
28A Receiving Selector (Teletype LRS2)
Specification RS-581.0
Section 23S
Page 1
6- 20 - 62
This selector, designed for mounting on a 28A Mounting and Cover Assembly
[LRSB to us Teletype guys], is utilized to convert a 5 level sequential
teletypewriter signal into an equivalent parallel output.
Features of this unit include the following:
1. - A receiving selector for accepting serial teletypewriter signals .
2 . Transfer type code reading contacts with two auxiliary contacts for
parallel readout.
3. Termination of internal wiring through a cable at a 36 terminal
Amphenol Receptacle which is to be mounted on the 28A Mounting and Cover
Assembly [LRSB].
4. Provision for operation at 60, 75 and 100 words per minute through use
of 28G, 28H and 28J Motor to intermediate sets of gears respectively.

Cheers,
Nick England K4NYW
www.navy-radio.com

On Sun, Nov 22, 2015 at 10:13 AM, W2HX <w2hx at w2hx.com> wrote:

> Interesting indeed. I found references to it, but no manual per se.  I
> wonder how this worked on the output side? Was there 5 bits plus some kind
> of a strobe/data ready line to signal the parallel-side equipment that the
> data was ready? And does anyone know what sort of parallel equipment/device
> was used? Early computer? Parallel messaging system?
>
>
>
> *From:* GreenKeys [mailto:greenkeys-bounces at mailman.qth.net] *On Behalf
> Of *Ed Sharpe Archivist for SMECC via GreenKeys
> *Sent:* Sunday, November 22, 2015 1:49 AM
> *To:* greenkeys at mailman.qth.net; couryhouse at aol.com
> *Subject:* [GreenKeys] yea bay has LRSB 28 series serial to parallel
> conv? mechanical style!
>
>
>
>
>
> yea bay has LRSB  28 series  serial to parallel conv? mechanical style!
>
>
>
>
> http://www.ebay.com/itm/TELETYPE-LRSB-Receiving-Selector-Ham-Radio-RTTY-/291621779913
> ?
>
> looks  like one more thing  for the 28  completest!  Can anyone revel us
> in tales about this  device!?  Ed#
>
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