[GreenKeys] Greenkeys

[Ralph Mowery]

The 33 is ASCII.  It will not ‘talk’ to the Baudot machines.  The 33 is probably set for 110 baud  where the most common baudot is 45.45 baud. The 33 is 8 level and the Baudot machines are 5 level.

 

The Arduino is a very small microprocessor board.  Some are the size of a pack of playing cards, some about the size of a pack of chewing gum.  They have about as much processing power as the old 8080 processor.  Plenty fast and enough memory onboard to do the conversion .  I am not ‘smart’ enough to write a program for them, but years ago I had a 8080 processor board and ‘stole ‘ enough code from others to do the conversion of Baudot to ASCII and ASCII to baudot.  The board only had about 4 K of memory.   The Arduino boards are very inexpensive from China.  Often under $ 5.  

 

If the Arduino will not do it, I am sure the Raspberry PI for about $ 40 will .

 

I doubt any ASCII is being used much if at all on any of the lower frequency bands.  Maybe W1AW is still putting out a bulletin in ASCII .  I have not checked that in a very long time.

 

 

Ralph ku4pt

 

 

From: greenkeys-bounces at mailman.qth.net [mailto:greenkeys-bounces at mailman.qth.net] On Behalf Of Don Cunningam
Sent: Friday, July 23, 2021 5:37 PM
To: greenkeys at mailman.qth.net
Subject: Re: [GreenKeys] Greenkeys

 

I am pretty sure the Model 33 is ASCII only and I've only seen a few of them, mostly in machine shops in the day, but you would need an ASCII to Baudot converter to make it work on the HF bands I listen on.  I haven't tried any of the military or general coverage bands on HF to see if there is any ASCII left there, but I doubt it.  That might be a job of the arduino, I am not familiar with those.
73,
Don, WB5HAK

On 7/23/2021 4:20 PM, Rick Miller wrote:

I don't know - maybe.  I had a model 28 before.  So this is different territory, and maybe the speed would be a problem. 

I just assumed it was a matter of selecting the proper gears for the speed you're operating.  And then again, perhaps its the difference between 5 vs 8 level ASCII.  Maybe there will have to be an arduino project to fake it to operate.

 

On 7/23/2021 5:08 PM, Paul Heller wrote:

Doesn’t the model 33 run too fast for RTTY?

Paul

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