[Elecraft] A few Questions on the K3

[Lou Kolb]

Jobst,

I have to say I've been amazed by the performance of the K3 internal tuner. 
Since it's relay based, I expected it to be inferior to the tuner in my 
TS-440 which is motor-driven.  In fact, the inverse is true.  It even tunes 
half of the G5rV as a very short inverted-L on 160 which I couldn't even get 
the Dentron super tuner to do.  Lou WA3MIX
----- Original Message ----- 
From: "Jobst Vandrey" <jvandrey at yahoo.com>
To: <elecraft at mailman.qth.net>
Sent: Saturday, December 04, 2010 1:19 PM
Subject: [Elecraft] A few Questions on the K3


>I built a K2 a number of years ago while sailing (S/N #1442) and it served 
>me well as my only route for email to my family using Winlink and a pactor 
>modem.  That K2 sits on the shelf at the moment (and may get sold shortly) 
>while I am using an Icom 703 Plus.
>
> I operate Digital modes (mainly PSK) and stick to QRP so Elecraft 
> equipment has always been on the short list.  I am now in the process of 
> working on the antenna side of the equation and plan on a vertical Moxon 
> (reversible) in addition to my 120 foot long wire (with an Icom AH-4 
> tuner) and a 33 foot vertical doublet fed with 450 ohm window line using a 
> 4:1 Balun.  Once the antenna issue is complete, I am seriously considering 
> the upgrade to a K3
>
> So - On to the questions:
>
> 1) With a 4:1 Balun and the K3 tuner, will I have any issues (6 meters to 
> 20 meters only) matching the vertical doublet (the Icom handles it OK)?
>
> 2) How could I continue to use the Icom Tuner with the K3 on the random 
> wire (80 to 6 meters)?  How do I initiate a tuning cycle that would send 
> 10 watts to the AH4 in CW and then revert back to SSB for the PSK
>
> 3) Can the K3 initiate a tuning cycle on the AH4 without using the 
> internal tuner
>
> 4) I plan to use the MFJ 4116 Bias injector to introduce 12 volts on the 
> coax leg that feeds the reversible Moxon (needed to run the relay that 
> reverses the antenna pattern)- will this create an issue with the K3
>
> Any thoughts or experience is welcome
>
> Thanks in advance
>
> Jobst Vandrey
> AC0LP
>
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