[Hi-zreceivingarraydiscussions] HiZ 4-8 PRO noise

Sat Nov 29 15:44:11 EST 2014

Hello Jorge,
  Yes, the box with the signal strength LEDs is the wireless switching unit.
Yes, just supply the 18volts to the power injector and all will be fine.
  You might measure the wall wart when it is connected to verify its actual
voltage. Hopefullly it is not a switching type as it may cause noise on the
array 
If it is.
Lee

-----Original Message-----
From: Hi-zreceivingarraydiscussions
[mailto:hi-zreceivingarraydiscussions-bounces at hizantennas.com] On Behalf Of
Jorge Diez - CX6VM
Sent: Saturday, November 29, 2014 12:14 PM
To: 'Hi-Z Receiving Array Discussions'
Subject: Re: [Hi-zreceivingarraydiscussions] HiZ 4-8 PRO noise

Hello Lee

I don´t have the wireless unit. Mine is wired.

In the shack I have this two boxes (will send you directly I don´t know if
the list allow attachments)

I have a wallet PS that give 17.5 volts, will try with it.  So I leave 13.8
volts on the control unit and apply 18 volts to the power injector, that´s
right?

73,
Jorge

-----Mensaje original-----
De: Hi-zreceivingarraydiscussions
[mailto:hi-zreceivingarraydiscussions-bounces at hizantennas.com] En nombre de
Lee K7TJR Enviado el: sábado, 29 de noviembre de 2014 03:48 p.m.
Para: 'Hi-Z Receiving Array Discussions'
Asunto: Re: [Hi-zreceivingarraydiscussions] HiZ 4-8 PRO noise

Gm Jorge
   Reading only 2.8 Volts on antennas means that your voltage is very low at
the system in the field. This is due to the resistance of the RG-6 cable you
are using to feed the array.
 One easy way to correct this problem is to use a higher voltage supply in
the shack to send higher voltage down the cable. Some have found a wall wart
that has a higher voltage like 15 volts and used this to raise the voltage.
Do not apply the higher voltage to the wireless unit in your shack, leave it
on your shack 13.8 volt supply.  You can apply as much as 25 volts DC to the
power jack or terminals on the back of the shack switch to raise the voltage
in the field. You will need to get that voltage up for the array to work
properly.
 So if you have a 15 Volt or so wall wart or a variable supply you can use
you should try to get the voltage in the field up to at least 12 volts.
   Your wireless units are just like wifi signals. The boxes need to be in
the clear for maximum signal. There are tiny antennas inside the black
boxes. You may have to put the transmitter unit at the shack in a window or
higher in the air for best signal. Personally I have one  mounted at about
15 feet up on the side of my tower and I get full strength 1000 feet away at
the array location in the field. I am using 25 volts at the shack to get
enough voltage 1000 feet away. You should not have to go this high with only
350 feet.
 Keep me posted,
Lee  K7TJR

-----Original Message-----
From: Hi-zreceivingarraydiscussions
[mailto:hi-zreceivingarraydiscussions-bounces at hizantennas.com] On Behalf Of
Jorge Diez - CX6VM
Sent: Saturday, November 29, 2014 3:08 AM
To: 'Hi-Z Receiving Array Discussions'
Subject: Re: [Hi-zreceivingarraydiscussions] HiZ 4-8 PRO noise

Hi Lee

You are right, antenna #5 is bad connected, GND to antenna and Antenna to
ground :-)

Will fix it for this night

I read 2.8 volts on each antenna? What that means? Bad ground?

And on the control box, the strength is not very good, just one green red.
Sometimes just the yellow one, and sometimes grow till the second green led
is flashing. I have 350 ft of RG6 from antennas to shack

73,
Jorge
CX6VM/CW5W

-----Mensaje original-----
De: Hi-zreceivingarraydiscussions
[mailto:hi-zreceivingarraydiscussions-bounces at hizantennas.com] En nombre de
contact at hizantennas.com Enviado el: sábado, 29 de noviembre de 2014 01:35
a.m.
Para: 'Hi-Z Receiving Array Discussions'
Asunto: Re: [Hi-zreceivingarraydiscussions] HiZ 4-8 PRO noise

Hi Jorge,
  It sounds like you have one of the Hi-Z amp antenna  input  wires on one
of  1,3,5,7 reversed with the ground wire.  You can simply use a voltmeter
to measure the 4 to 5 Volts DC between the element and the ground peg you
are using. Each element should read around 4 to 5 Volts DC. You may also
have an element shorted to ground by some unknown foliage or  closely
touching wire?
  Either thing will cause this. You can simply inspect each Hi-Z amp to make
sure the antenna and ground connections are correct.
 Lee

-----Original Message-----
From: Hi-zreceivingarraydiscussions
[mailto:hi-zreceivingarraydiscussions-bounces at hizantennas.com] On Behalf Of
Jorge Diez - CX6VM
Sent: Friday, November 28, 2014 7:20 PM
To: 'Hi-Z Receiving Array Discussions'
Subject: Re: [Hi-zreceivingarraydiscussions] HiZ 4-8 PRO noise

Hi Lee

Antennas 2468 are OPK

Antennas 1357 have a huuuuuummmmmm noise

How can I test DC voltage?

Thanks,

-----Mensaje original-----
De: Hi-zreceivingarraydiscussions
[mailto:hi-zreceivingarraydiscussions-bounces at hizantennas.com] En nombre de
contact at hizantennas.com Enviado el: sábado, 29 de noviembre de 2014 01:00
a.m.
Para: 'Hi-Z Receiving Array Discussions'
Asunto: Re: [Hi-zreceivingarraydiscussions] HiZ 4-8 PRO noise

Hello again Jorge
   I am not sure what you are telling us. Which antennas seem to be working
1357 0r 2468 ?
 They are separate systems that switch between the two.
  You need to recheck all your connections and make sure they are tightened
correctly.
 Also test each antenna for the DC voltage as mentioned before.
Lee

-----Original Message-----
From: Hi-zreceivingarraydiscussions
[mailto:hi-zreceivingarraydiscussions-bounces at hizantennas.com] On Behalf Of
Jorge Diez - CX6VM
Sent: Friday, November 28, 2014 6:21 PM
To: 'Hi-Z Receiving Array Discussions'
Subject: [Hi-zreceivingarraydiscussions] HiZ 4-8 PRO noise

Hello

Finished installing all the system at 23:30 UTC!, very tired

HiZ is listening, not as good as my beverage, but I noticed I have a noise
on antennas 1, 3, 5, 7

Antennas 2, 4, 6, 8 are very quite

Any idea what´s wrong?

73,

Jorge

CX6VM/CW5W

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