Jack,

The power level MLDX sees appears to be updated / polled every few seconds. 
And, it stays the same, regardless of the K3's Power level setting.

A few minutes ago I sent Don an email asking if he had been following the 
thread. He replied no, but asked for a link to it. I just sent it to him.

I do like MLDX - a fine program, indeed. Not only do I use it for my limited 
contesting, but - I am making an assault on 5BWAS. Being able to quickly key in 
a station's call and finding out if it is a state I need on that band makes 
things lots easier. Certainly I could use native QRZ.COM, but with MLDX, if I 
need the state, everything is already loaded into the proper fields for me. I 
got into IT back in the late 60's and have "enjoyed" knowing quite a few 
programming languages - mostly dinosaur-speak by today's standards. But I know 
what you mean about support hassles! I did write a small Apple Script program 
that I have been using to key in my past 47 years' worth of paper logs and 
enter them into MLDX. Now THAT has been quite a chore!

Jim / W6JHB

On   Thursday, Mar 1, 2012, at  Thursday, 9:09 AM, Jack Brindle wrote:

> Jim;
> 
> Let me ask another question. For logging the power level, what gets logged? 
> During transmit, the KPA is constantly measuring its output power, making it 
> available to a computer in response to a serial command query. The 
> measurement can vary widely, depending on when the measurement is taken with 
> respect to the transmission. Especially in SSB, this can be anywhere between 
> zero and the peak output. Just watch the KPA power display to see this action.
> 
> A logging program would periodically poll for the power, and will receive 
> many readings during a QSO. So the question is, which of these readings would 
> it log? Perhaps the highest one it received? Or should it keep a running 
> average? We don't want the complexity of this calculation to get out of hand, 
> especially when asking a logging program author/vendor to add the feature to 
> his product. But it is necessary to be able to add the feature.
> 
> I believe the value set in the K3 when you twist the power knob is the peak 
> power that will be allowed during transmit, but it, too, is not what is 
> actually transmitted. With the KPA, we only have a measured value, which is 
> approximately 13db higher than whatever the transmitter feeds it. Note that 
> we cannot control the output power in the KPA other than shutting off 
> amplification.
> 
> I sent Don an email asking if he is interested in adding KPA support to MLDX. 
> I've know him for quite some time, and am quite willing to work with him if 
> he decides to support the feature. Interestingly, I'm not an MLDX user 
> (something Don would like to change). The reason is that I am also a Mac 
> developer, and have my own logging program that I use. It is constantly 
> changing, and not a commercial product (Been there with MacPacket years ago, 
> I don't want the support hassles). Besides, the reason it keeps changing is 
> that I'm not really happy with it yet. And no, it doesn't have KPA support at 
> present, nor many of the features that MLDX has. It is oriented towards 
> contesting, something I really enjoy when I can break away from product 
> development.
> 
> Jack B, W6FB
> 
> 
> On Feb 29, 2012, at 10:17 PM, Jim Bennett wrote:
> 
>> I use MacLoggerDX (MLDX) for QSO logging, among other tasks. It interfaces 
>> very nicely between my K3 and the MacBook Air laptop. The K3 passes a lot of 
>> data (including power output level) to MLDX and it winds up in my log. 
>> However, when I'm using the KPA500, the K3 only sends the driving power that 
>> it outputs to the amp. What I wind up with in my log is incorrect. For 
>> example, if the KPA500 is in OPERATE mode and I log a QSO, it'll get 
>> reported as a QSO made using 25 watts or power, instead of the 450 - 500 
>> that the amp is putting out. Since the K3 and the KPA500 "speak the same 
>> language" and talk to each other, can the firmware be changed so that the K3 
>> sends corrected Power Out level to the output data port when the KPA500 is 
>> engaged? As it is now, I have to go back into MLDX after every QRO contact 
>> and change the power field to reflect the actual power and not the K3's 
>> driving power.
>> 
>> Regards, Jim / W6JHB
>> Folsom, CA
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