[Elecraft] K3 Non-Standard RS232 Interface?

Lyle Johnson kk7p at wavecable.com
Wed Aug 29 14:11:12 EDT 2007


> The RS-232 connector on the K3 will be the opposite sex of Kenwood & Yaesu,
> which use a male DB9 connector on the radio. 

A male connector on the device implies wiring as Data Terminal Equipment 
(DTE) such as the serial port on a PC.

A female connector on the device implies wiring as Data Communications 
Equipment (DCE) such as a telephone modem (remember those? :-)

In general, if the sex of the connectors of the two devices you are 
interconnecting is the same, a "null modem" cable (swaps various pin 
pairs) is implied.  If the sex is opposite, a straight-through cable is 
implied.

The K3 uses a standard, straight-through, male-to-female cable.  Its 
DE-9 connector is wired as DCE.

73,

Lyle KK7P



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