[Elecraft] CW power output and remote tuners

[WILLIS COOKE]

Kurt, I have yet to find any reasonable antenna that my K3 tuner will not match except extremely short.  There are no absolutes in antennas.  The remote antenna matching device will be a little more efficient and will depend on what kind of coax you use and how long the coax.  Bear in mind that a lot of people use QRP which is more loss than a horrendous swr on 100 feet of small coax.  From what you are telling us, you will be much better off with the built in tuner.  The K3 will put out at least 100 watts on all bands through 6 meters.   


 
Willis 'Cookie' Cooke 
K5EWJ & Trustee N5BPS, USS Cavalla, USS Stewart


________________________________
 From: Mini Builder <kiminicooper1 at yahoo.com>
To: "Elecraft at mailman.qth.net" <Elecraft at mailman.qth.net> 
Sent: Friday, December 20, 2013 9:22 PM
Subject: Re: [Elecraft] CW power output and remote tuners
 

Thanks, guys.
 
My reasoning for thinking that I need a remote tuner is that
1. It’s recommended in about every reference I've seen, and B. What’s the
alternative? I assume it means going straight to coax (probably through a
balun) at the feed point, and putting up with whatever mismatch there is,
correct? Anyone know how much of a mismatch the K3 can handle? I know it's around 10:1 SWR, but what about impedance?

Yes, I know about the importance of a good ground on an inverted-L, that's definitely on the list.



On Friday, December 20, 2013 7:06 PM, Ariel Jacala <ny4g at hotmail.com> wrote:
  
Hello Mini Builder

Welcome back.  The K3 internal tuner is the best choice.  I have used tuners of every stripe and Elecraft internal tuners have a very wide tuning range and will match everything that my other tuners won't.  Why do you need a remote tuner?  If you only have one antenna - you need a multiband antenna that is a wire.  An inverted L will need a lot of radials to be efficient and is good for the low bands.   Various wire antennas which do not need radials will do you better for 40-10m.  A K3 tuner will tune an inverted L provided you cut it right.  It will also tune wires of every stripe.

Ariel NY4G

Sent from my iPad


> On Dec 20, 2013, at 9:44 PM, "Mini Builder" <kiminicooper1 at yahoo.com> wrote:
> 
> Background:
> I got into ham radio back in the 1970s, getting my
> license at age 12, then life moved on and my license expired. Recently, going
> through my dad’s stuff after he passed away, I found his license, which brought
> back many fond memories, so I decided to get back into it.
>  
> Now:
> I just passed the Technician and General test (no call sign
> yet) and have been looking at the state of the art - HOLY SMOKES have things
> changed! Anyhow, after a lot of research, I’ve decided to get a K3, but before
> that, I need an antenna. The K3 (with amp) outputs 100W. I’m pretty sure
> that I’m going with an inverted-L antenna, which requires a remote antenna
> tuner at its base. One promising remote tuner
> is the SG-230, but it can only handle “80
> watts continuous.” My question: In CW mode, how much power does the K3
> output? (assuming worst-case key down 100%).
>  
> If the answer is “100W”, what remote tuner are you guys
> using with inverted-Lsand your K3s? Yes, I know that the K3 can have a built-in tuner, but I
> don’t think it can work with an
> inverted-L.
>  
> Kurt – currently call-sign-less, but who was once WB6DSW.
> 
> (I understand about keeping posts short, but this is my intro post. Follow-ons will be shorter :)
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