Don
I agree that the BL2 is a true current balun using a balanced design
that chokes common mode currents while also transforming impedances to
ease a conjugate match - albeit one of the ratios is 1:1 - but my
coax-through-ferrite-beads unbalanced common mode choke *only* does what
it says on
Pete, Brian and all,
The BL2 *is* a current choke 'balun' - both in the 4:1 and the 1:1
configuration.
73,
Don W3FPR
Peter Connors, F5VNB wrote:
Brian
Try a current choke 'balun' instead of the BL2.
As a temporary antenna I have 25m of twin speaker wire run out from
the shack under the roo
Brian Lloyd wrote:
current node (odd multiple of a 1/4 wave)? Yes, I know that the ability
to achieve a conjugate match depends on the capacitance and inductance
range of the tuner. Also this affects the range of the real component
(resistance) that can be matched and what frequency you are tr
Brian
Try a current choke 'balun' instead of the BL2.
As a temporary antenna I have 25m of twin speaker wire run out from the
shack under the roof tiles - that's about 7m - and then the remaining
18m split as a doublet. It hangs at an average height of 5m from a
couple of trees. The 'feeder' e
waste :-)
Good luck and 73
Bob N6WG
- Original Message -
From: "Brian Lloyd" <[EMAIL PROTECTED]>
To: "Bob Tellefsen" <[EMAIL PROTECTED]>
Cc:
Sent: Monday, June 02, 2008 8:45 PM
Subject: Re: [Elecraft] K2 KAT100 and BL2 questions
>
> On Jun 2, 2008,
On Jun 2, 2008, at 9:25 PM, Vic K2VCO wrote:
Brian Lloyd wrote:
1. What is the matching range of the KAT100, i.e. will it match an
antenna fed at a voltage node 2. Does the BL2 have a problem when
looking at a really high impedance, i.e. when center feeding a full-
wave doublet?
Maybe I
Brian Lloyd wrote:
1. What is the matching range of the KAT100, i.e. will it match an
antenna fed at a voltage node
2. Does the BL2 have a problem when looking at a really high impedance,
i.e. when center feeding a full-wave doublet?
Maybe I'm missing something, but the answer depends on
On Jun 2, 2008, at 1:32 PM, Bob Tellefsen wrote:
Brian
What are your expectations for this antenna?
Used as a halfwave, say on 40m, its pattern will be that
of a regular dipole. However, if you feed it at the end,
it becomes an endfed full wave on 20m. It will not
have a nice major lobe at r
about 2 dB gain over a simple
dipole.
Good luck and 73
Bob N6WG
The Little Station with Attitude
- Original Message -
From: "Brian Lloyd" <[EMAIL PROTECTED]>
To:
Sent: Monday, June 02, 2008 10:54 AM
Subject: [Elecraft] K2 KAT100 and BL2 questions
> Does anyone kno
Brian,
That antenna is commonly referred to as "two half waves in phase" and
has 2 to 3 dB gain broadside to the radiator.
Yes, its feed impedance is high, but if the feedline is somewhere near a
quarterwave (or odd multiple thereof) long at the frequency of interest,
the feedline impedance
Does anyone know if the KAT100 has enough range to match a radiator
that is close to (or is) an end-fed 1/2 wave? What I am thinking about
is feeding a dipole at twice its resonant frequency so that it is
effectively two end-fed 1/2 wave sections and then feeding with
ladder line. Now the
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