[GreenKeys] More M28ASR typing reperf Discussion

[Nick England]

 Insert standard disclaimer about the folly of making ANY definite
statement about Teletype equipment.....

Repeat after me - ASR reperf selector magnets ARE NOT CONNECTED to the rest
of the ASR.
This is true for keyboard reperf selector magnets and also for a dome
reperf's selector magnets.
You can hook them up externally however you like but there is NO internal
interconnection to the keyboard/printer/TD.

Seriously, the ASR was mainly intended to use a keyboard perf, not a reperf
- If you have a keyboard reperf you need to make sure you aren't
simultaneously trying to punch tape via the keyboard mechanical linkage and
also via the selector magnet. In K mode the reperf can run from a
completely different loop than the ASR's keyboard, TD, and typing unit.
The intent of a using a reperf was that you could be receiving some
separate message to the reperf from loop 1 while you are conversing on loop
2 using the keyboard/printer, then later transmit that punched message on
loop 2 using the TD. With a dome reperf, you can even receive from loop 1
at a different speed than loop 2.

Nick England K4NYW
www.navy-radio.com


On Wed, Mar 2, 2022 at 7:57 PM W2HX <w2hx at w2hx.com> wrote:

> Hi again friends. KE3BK mentions that Mr. RTTY (Paul) thinks that M28ASRs
> never came with full chad reperfs (meaning the one connected to the
> keyboard, not the under dome reperf).  Is there anyone on this list who can
> confirm/deny this? Does anyone have an ASR with a full chat (punched holes)
> reperf next to the keyboard?
>
>
>
> If no one has an ASR like this, then maybe he’s right. SOOOOO my next
> question is,  what is involved in installing an under dome reperf? And does
> anyone have a spare one of these (full chad?) I assume this is just
> switched in and out of the loop? If an ASR has both a keyboard reperf and
> an underdome, are they on the same loop? Is there a use case where they are
> both reperforating the same incoming message?
>
>
>
>
>
> 73 Eugene W2HX
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>
>
>
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