Vertical VS. Long wire

[Se7en]

So here is a 30 second recording of 5.225 MHZ on USB. The First 10 seconds is my Vertical 10m antenna 30' in the air on a push up pole grounded by 3 8' ground rods with 1/2" flat strap by 1'. The next 10 seconds in the clip 10-20s is the long wire which is 32' long solid conductor wire coiled like a spring and stretched along the inside of the room from east to west ( wire is attached from the East side of the antenna), the last 10 seconds of the clip is both the vertical and long wire to gether, as you can hear it removed the local pulse sound but brought up the S unit from: 1 s unit pulse to no pulse but 6 s units. Does this sound right?

 

[Mudfoot]

None of my many codecs will open it.

 

[Mudfoot]

Okay, got it to open, sounds like a polarity issue of the received signal.

 

[Captain Kilowatt]

Sounds like perhaps the signals from the two antennas were arriving out of phase and cancelling out.

 

[Se7en]

Seems to work okay except the LONG WIRE is much nosier( more white noise) then the vertical....i wonder why

 

[jazzsinger]

Sounds like perhaps the signals from the two antennas were arriving out of phase and cancelling out.

no doubt, as Garth says soon as you introduce another antenna you introduce multipath signal propagation and phase differences, there could already be that with just one antenna, but two rx antennas makes it a definite, as they are apart, even a few inches/feet apart can cause massive signal differences due to obstacles that could be miles away or feet away.

 

[Se7en]

no doubt, as Garth says soon as you introduce another antenna you introduce multipath signal propagation and phase differences, there could already be that with just one antenna, but two rx antennas makes it a definite, as they are apart, even a few inches/feet apart can cause massive signal differences due to obstacles that could be miles away or feet away.

The LONG WIRE is much nosier( more white noise) then the vertical....i wonder why?


Sent from my DROIDX using Tapatalk 2

 

[mackmobile43]

The wire is most likely receiving signals from inside the room/house that the vertical cannot see and not receiving the pulse due to an obstruction such as metal siding on the home or the most obvious reason it is not tuned for the band the pulse is on.

 

[Se7en]

no doubt, as Garth says soon as you introduce another antenna you introduce multipath signal propagation and phase differences, there could already be that with just one antenna, but two rx antennas makes it a definite, as they are apart, even a few inches/feet apart can cause massive signal differences due to obstacles that could be miles away or feet away.

I must be dumb than I thought the more antennas for receive the better...yikes

Sent from my DROIDX using Tapatalk 2