[Elecraft] K2, FD, and N1MM

[Guy Olinger K2AV]

One N1MM/MM+ thing doable on a K3/3S you cannot do with a K2 is to use DTR
or RTS to the transceiver for logging program driven internal CW keying.
It's not in the K2 firmware, and the leads are not in the K2's DB9 jack.
You have to break out the keying and provide *some* external device to key
the K2.

I use a Microham "CW Keyer" box (very small) to drive my K2 in contests,
and it works seamlessly. Splits out everything I need. I have a cable which
pulls off TXD, RXD and signal ground from the K2's DB9 connector on one end
and uses mini-phone-plug tip ring and sleeve to the CW Keyer. Another cord
to the K2 key jack, another for power to the CW Keyer, and a single USB
cord from the CW Keyer as the only connection to the computer. The
Microham driver software for the CW Keyer serves everything up to N1MM as
virtual serial ports. Paddle connects to the CW Keyer.

The integration of the K2 with a KPA100 is seamless, even in a separate
enclosure, and PTT is not needed.

N1MM+ is flawless with the K2 with my Microham CW Keyer setup.

73, Guy K2AV

On Thursday, July 7, 2016, Don Wilhelm <donwilh at embarqmail.com
<javascript:_e(%7B%7D,'cvml','donwilh at embarqmail.com');>> wrote:

> The K3 can use a standard serial cable, the the K2 *cannot*. The only
> connections for the K2 from the computer is pins 2, 3 and 5 in the cable -
> those are TXD, RXD and Signal Ground.
>
> All other pins in the K2 AUX IO connector (note that it is *not* an RS-232
> connector and is not labeled as such) are internal K2 signals to operate
> external Elecraft devices such as the KAT100, XV transverters and the KRC2.
>
> The use of a standard PC serial cable between the K2 and the computer can
> damage both the K2 and the computer serial port.
>
> If you have no special computer connection cable with your K2, then build
> the cable described in the KIO2 or KPA100 manual or if you have the KAT100,
> build the cable shown in that manual.
>
> N1MM fully supports the K2 unless something has changed quite recently.
>
> 73,
> Don W3FPR
>
> On 7/7/2016 7:31 PM, Nr4c wrote:
>
>> In wondering if the same serial cable dorks withe both radios. I thought
>> the K2 cable was different.
>>
>> Sent from my iPhone
>> ...nr4c. bill
>>
>>
>> On Jul 7, 2016, at 6:38 PM, PHILIP GRAITCER <pgraitc at me.com> wrote:
>>>
>>> I got the K2 out for Field Day and it performed great! I’d never used
>>> the K2 with a computer, so I hooked it up and set up N1MM for the contest.
>>>
>>> I was unable to get the function keys to operate and N1MM was a little
>>> unstable, sometimes locking up. I was able to log contacts, but couldn’t
>>> send code. This isn’t the case when I use the same setup with my K3.
>>>
>>> I’m thinking that there are incompatibilities between the K2 and N1MM,
>>> probably due to the age of the K2. But I am not very capable with computers.
>>>
>>>
>>>
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