Re: KX3 with BL2 Question

Posted by rich hurd WC3T on Oct 04, 2017; 2:35pm
URL: http://elecraft.85.s1.nabble.com/KX3-with-BL2-Question-tp7634878p7634882.html

Would not a bnc-to-banana plug adapter hooked to a doublet made from 100'
of zip cord be equally useful?   Is there even a reason to have a balun
in-circuit?   I've read the characteristic impedance of the zip cord (or
speaker wire, etc.) is about 75 ohms.  If you "unzipped" 67 feet or so and
put on a tie wrap (to avoid further unzipping), you'd have a quite
serviceable 40 meter dipole with an SWR of 1.5:1 or so.

---
72,
Rich Hurd / WC3T / DMR: 3142737
PA Army MARS, Northampton County RACES, EPA-ARRL Public Information Officer
for Scouting
Latitude: 40.761621 Longitude: -75.288988  (40°45.68' N 75°17.33' W) Grid:
*FN20is*


On Wed, Oct 4, 2017 at 10:00 AM, Don Wilhelm <[hidden email]> wrote:

> Stan,
>
> Either of those options will work - however ---
> I would suggest minimizing the coax.  The balun will not transform to a 50
> ohm load, so the coax can run at a high SWR which will give more loss than
> the window line.
>
> Whether that minimum is zero or 5 feet will not make a significant
> difference, so use whatever is convenient for your station.
>
> 73,
> Don W3FPR
>
> On 10/4/2017 9:26 AM, stan levandowski wrote:
>
>> When operating a KX3 with the internal ATU into a window line fed doublet
>> through a BL2 balun, what is the preferred connection method:
>>
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