[1000mp] Usage of MFJ-1026

Tue, 10 Feb 2004 20:16:50 -0500

Tom,

If you use the MFJ-1026 per the recommended setup for the ANC-4 equivalent
then you are not connected through the MFJ via the tuner.  You still need an
aux antenna.  I have had the MFJ-1026 since last Saturday and I am using it
like shown at the attached WEB site, which is:

http://www.va3cr.net/downloadfiles/FT1000MP%20and%20ANC-4.txt

One thing I have learned and it is suggested by MFJ in their manual is that
a external antenna will be required.  I have tried the internal whip and it
just does not give me a strong enough signal to use for the phase
cancellation.  I have tried several VHF antennas but they do not produce a
strong enough signal at this location to help in the reduction of man made
noise on the 160 and 80 meter bands.  This weekend I plan on putting up a 40
meter dipole at around 20 ft high running parallel to my 80 meter Zepp,
separated by 40 feet and hopefully more, that is up 65 feet, and hope that
with the built in MFJ amplifier on the auxiliary antenna that I can get a
strong enough signal (noise) to use to cancel out or help reduce a S-9 +
birdie that occurs ever 17 KC or so on the two bands mentioned.

I have reviewed the schematics of the FT-1000MP, and I am assuming that its
the same on the Mark V, where the aux antenna connects to the RF board after
the LP and HP assemblies and passes the main antenna, connected to either
the A or B input, to the RX Aux Output in the receive mode and not during
transmit thus there is no need for the PTT connection to the MFJ.  The only
problem maybe to much RF signal pickup from the aux antenna connected to the
MFJ will in transmit, however there is built in protection, if you choose to
call it that, which will protect the unit.

Using the AUX RX antenna ins and out's on the back of the rig bypasses the
tuner and as stated above both the LP and HP banks and thus will reduce the
S-meter reading around 1/2 to 1 S-unit.  That's the maximum I have seen to
date.  Give me a buzz in about 7 days and I'll bring you up to date on my
results with a 40 meter dipole acting as the MFJ's noise canceling antenna.
Possible a 20 meter dipole will produce enough signal as I have read from
other user but my choice is to start with a 40 meter dipole.

Best of Luck, sounds like you also have a frustrating problem.  Boy I hope
that the WEB access over Power Line doesn't kick in, then we all will be in
deep noise trouble and have to move into the VHF region.

Ron - W4LDE
----- Original Message ----- 
From: "Thomas Otterbein" <[email protected]>
To: <[email protected]>
Sent: Tuesday, February 10, 2004 16:49
Subject: [1000mp] Usage of MFJ-1026

Hello,
I have a MFJ-1026 noise reducer.
The operating manual warns to use it with an internal
antenna tuner. It�s mentioned to use an antenna tuner only
between MFJ-1026 and the antenna.
Anybody has experience to use it with FT-1000MP Mark V
with the internal antenna tuner?

Thanks for helping!

73 de Thomas
DG8FBV

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