[GreenKeys] Baud rate change

[steve bennett]

 Roy,
Are you sure it was 800Hz?I have some aircraft instruments and they all use 400Hz.This is why I started looking into VFDs (Variable Frequency Drives) AKA inverters.
-Steve
    On Wednesday, September 1, 2021, 09:15:03 AM EDT, Roy Morgan <k1lky68 at gmail.com> wrote:  
 
 INTERESTING!!
Early WW-II Navy aircraft carried the GO-9 LF/HF transmitter that ran on 115v 800 cycle AC, provided by an 800-1 rotary inverter. These inverters are now unobtainable. 
I wonder if there are variable speed inverters as affordable as the one linked below that produce 800 cycle output. 
Roy
Roy MorganK1LKY Western Mass

On Sep 1, 2021, at 8:09 AM, steve bennett via GreenKeys <greenkeys at mailman.qth.net> wrote:



 Joe,
The easiest way to change the speed is use a single phase variable speed inverter.This would require no modification to the teletype.https://www.ebay.com/itm/121462713601?hash=item1c47bded01:g:HP4AAOSw8lxg7UK2

This device takes 60Hz input and you set the output to any frequency you like.
-Steve

    On Tuesday, August 31, 2021, 10:13:45 PM EDT, Joe Duszyński <joeduszynski1 at gmail.com> wrote:  
 
 I have a European machine that runs on 220v 50hz and the motor speed is 2000 rpm.
Of course on 60hz 220v it runs faster than 2000 rpm ...

  
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