[TowerTalk] Mark-V with MFJ-1026

[Peter Dougherty]

At 01:33 PM 4/24/2008, George Gorsline VE3YV wrote:
>Peter - it`s easier than that - the Mark-V has all of the 
>connections needed for you to use it without having the MFJ unit TR 
>switch.  See the following diagram which is for another unit, but 
>the connections are the same.  It takes a couple of minutes to 
>follow it - not as intuitive as you might think (or I was having a 
>dense day).  With this in place, to use the noise canceler, just 
>push the RX antenna button.

One step forward, two huge steps back.

I never realized the RX OUT on the back of the Mark V was for the 
main antenna's signal (ANT-A or -B) - I thought it was the same 
signal that was coming in from the receive antenna. Now that I got 
that squared away, I connected the RX OUT to the main antenna port on 
the 1026 and the K9AY to the aux. antenna port (i.e. the sense 
antenna). Sure enough, I have signals from my yagis going through the 1026.

Two problems:
1) the K9AY being a lowband antenna, I have no noise "sense" on 
anything above 40m.
2) on 80m, using the AY and the inverted Vee, even though I am 
getting powerline hash using both antennas, there is no setting that 
will allow me to null out the powerline noise, period. I WAS able to 
do so, to a limited degree at least, when the 1026 had a 30 foot high 
noise antenna and the AY as the main antenna. Now, no combination of 
preamp on/off, phase normal/invert, phase angle, or antenna gain will 
achieve a cut of the 60 Hz buzz.

I'm back to square one, I think. the frequency limitations of the 
K9AY are killing me here, I suspect. I'm looking for a one-button 
solution to make this all work. Should I just buy another 1025 and 
have done with it?




Regards,

Peter,
W2IRT