[GreenKeys] ITTY to ASR33

[David Wade]

Rob,

Sorry, I disposed of a  PK232 a while ago but I do have a couple of 
spare RTTY decoders which I don´t use. Perhaps one of those will 
suffice, but I am in Spain for a couple of weeks so can´t check

Dave

On 06/10/2024 16:29, Jeffrey Golas wrote:
> I keep forgetting about these. They can also be used in pairs as a 
> converter; send ASCII in, have it talk RTTY to another (or a TU) as an 
> ascii to baudot adapter.
>
>> On Oct 6, 2024, at 10:28 AM, John Lawson <john at tubetestingpros.com> 
>> wrote:
>>
>> 
>>
>>   I hve used an AEA PK-232 to do this. The 33 is connected to the 
>> PK-232’s console port, which is configured for 110 ASCII. (The 232 
>> has an ‘autodetect’ feature which will set itself up for the correct 
>> terminal device)
>>
>> The the 232 is commanded into Baudot mode (By typing ‘BA’ on the 33) 
>> and incoming AFSK will appear on the console device. It’s quite wierd 
>> to have the ASR33 clacking away at 45 baud – less than half it’s 
>> “normal” speed – but it works well and I have used it at several 
>> demos I’ve run with Baudot and ASCII machinery running in parallel at 
>> the same time.  I’ve also decoded Morse this way.
>>
>> I know that there were several other similar devices available which 
>> also used an RS-232 / ASCII console and decoded various signal on 
>> their audio inputs. The PK-232 is the one I’m familiar with and seems 
>> to work well.  And the are not hard to find – I’ve had several of 
>> them over the years. Documentation is also archived in various 
>> places.  Look for HAL, Heathkit, Kantronics, etc.
>>
>> Finally one could use a USB – to Serial converter and run MTTY, 
>> FLDIGI, or similar, and send the output to the ‘serial’ port ad thus 
>> to the ASR33
>>
>> Cheers
>>
>> John KB6SCO
>>
>> Carson City
>>
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