Posted by
Nr4c on
Apr 02, 2012; 5:20pm
URL: http://elecraft.85.s1.nabble.com/BL2-w-Multi-Band-Dipole-tp7429655p7430363.html
Ron, I'm not reading what you're reading in this. I read that he is
going to run the ladder-line from the antenna, to the radio. He seems
to be asking if he can attach the BNC conector on the BL2 directly to
the back of the radio. I am considering doing just that with my KX3
when it arrives. This eleminates the coax jumper altogether. I would
think it would be a very low loss way to go. My only concern is that
the whole thing gets pretty long and bulky hanging off the KX3. Prob not
as much an issue with a K3/K2 radio. What do you think?
...bill nr4c
On Mon, 2 Apr 2012 09:13:16 -0700, Ron D'Eau Claire wrote:
> It sounds like you are planning to feed a single wire in the center
> with 450
> ohm ladder line so there will be standing waves on the feed line.
>
> In that case it's *always* more efficient to bring the parallel wire
> feed
> line all the way to the rig and avoid the use of 50-ohm coaxial line
> in the
> system. How much depends upon the SWR, which varies widely with
> frequency,
> and the length of the coax, but you can lose half of your power, or
> more, in
> a coax link with high SWR.
>
> 73, Ron AC7AC
>
> -----Original Message-----
>
>
> Hello Everyone!
>
> I am planning on building a multi-band dipole fed with 450 Ohm ladder
> line
> soon. I have a K1 & K2, both with the ATU's installed, and the BL2
> switchable balun. I was wondering if I could connect the balun
> directly to
> the back of the K1/K2 when I use this antenna? My other option would
> be to
> use one of my 18" foot RG8X jumpers between the rig and the balun. I
> know
> someone here has done it, or at least knows whether this will work or
> not.
> I am also posting this question to QRP-L, so I apologize if you see
> this
> message twice.
>
> Thanks ES 73,
>
> David
> KC9EHQ
>
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