[Boatanchors] Use of 275 watt Johnson matchbox

[Rob Atkinson]

No, in my opinion, you would be better off using the Matchbox all the time.

A.  It is a low pass tuner; the T network is high pass (hello harmonics).

B.  It is a genuine balanced feedline tuner; The T network tuner
(SA2040 and SA2060) uses a ug, _balun_.

C.  The T has more than one possible setting for getting a match.

If you need more power for home use, get the KW version, which is a
bargain at the average price of $300, considering what you get
compared to modern tuners.  Sure you may have to play around a bit
with the feedline length, adding or subtracting 5 or 10 feet but how
hard is that, and once it is done it's done.

My zero cents worth what you paid for it.

73

Rob
K5UJ


On Mon, May 23, 2011 at 9:39 PM, John King <k5pgw at yahoo.com> wrote:
> I normally use a Heath KW T  Match 2KW PEP rated tuner. It seems to work well. I
>
> recently loaned that antenna matcher to my son, N5ASM to use.
>
> Field Day is coming up and I plan to put a Heath Apache and Mohawk rig on AM for
>
> the Club as one of several stations to be used. I have built a 135 ft dipole
> with 450 open wire line to use with the Heath AM rig. I have a 275 watt Johnson
> Matchbox to use with the open wire line  fed dipole.
>
> Since I am not accustomed to using the Johnson Matchbox, balanced tuner, I would
>
> appreciate your input and suggestions for using the Johnson Matchbox. Would I be
>
> better off borrowing my heath tuner back for field day or using the Johnson?
>
> Thanks for reading and I would appreciate the benefit of your actual knowledge
> and experience with the Johnson matchbox. 73, John, K5PGW
>
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