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@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
Subscribe to my Youtube Channel: https://www.youtube.com/c/w2hx-channel/videos

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