[DogParkList] mldx keyer project

[Don Agro]

Hi Chris,

On 14-Dec-06, at 11:28 AM, EZRhino wrote:


> (Don...how hard would it be to add an audio output to MLDX?)


I don't think it would be very hard but I don't know how desirable it  
would be.


> takes the audio output from the computer's speaker output,  and  

> uses the audio to switch a relay on and off  (which goes directly  

> to the radio's key jack)


Using the audio to vox a relay seems the long way around to me (but I  
may be missing the point)

Isn't it much simpler and more reliable to key the radio directly in  
hardware - or use a hardware keyer - or use the Radios built-in keyer  
- all of which are supported by MLDX ?


> thus bypassing the whole USB/serial port and cable dilemma.


There really is no dilemma, you can buy a USB/Serial adapter very  
cheap these days and make a DTR/RTS keying cable for next to nothing.

http://www.qsl.net/wm2u/interface.html

If you don't want to 'roll your own', microHAM makes interfaces that  
include the USB/Serial adapter the radio cabling and the CW DTR/RTS  
circuitry...

<http://www.microham-usa.com/Products/USB.html>


73 Don Agro VE3VRW

D o g   P a r k   S o f t w a r e   L t d .

email: dagro at dogparksoftware.com
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