[GreenKeys] Western Union 21-A

[John]

On 5/30/2021 2:45 PM, Sea Horse via GreenKeys wrote:
> Hi, I am looking for any information regarding the 21-A tube 
> transmitter as seen in RTTY magazine. If you have any ideas for a 
> transmitter, they would be welcomed as well. I have some photos of the 
> 21-A if you would like them.
> 73, Dale VE7YTB
>

  Here is some background Stuff on these instruments:


https://www.smecc.org/m_21-a_western_union.htm


Enjoy!


Cheers

John KB6SCO

Carson City




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