[Hi-zreceivingarraydiscussions] Hi-Z 4-8 Pro

[k1uo at tds.net]

Tnx info John,

Here is what I found.......


I removed all 28 of the push on connectors I had on the system...  Did find 1 at one of the Plus 6 boxes that was quite loose and found 3 more inside the Array center boxes.  did the Plus 6  vltg tests after I finished reconnecting the coaxes direct and all voltages were good and I see I now have the s/n level resting at about –130 db..  That’s about right....  not the 80-90 I was seeing!!



I would definitely NOT recommend those for someone looking to eek out every db of signal :)



Merry Christmas all,



Larry  k1UO


From: John Kaufmann 
Sent: Wednesday, December 12, 2018 1:14 PM
To: k1uo at tds.net 
Cc: hi-zreceivingarraydiscussions at hizantennas.com 
Subject: Re: Hi-Z 4-8 Pro

Hi Larry,

 

I had the exact same thing happen to my array just recently.  I disconnected the antenna feedlines one at a time until removal of one feedline made the noise go away.  It turns out a critter had chewed into that RG-6 feedline.  Because the feedlines carry DC to the preamps, a cable fault, like a partial short of the braid to center conductor, will result in noisy current flow across the breach.

 

73, John W1FV

 

----------------------------------------------------------------------

 

Message: 1

Date: Tue, 11 Dec 2018 19:42:12 -0500

From: <k1uo at tds.net>

To: "Hi-Z Reflector" <hi-zreceivingarraydiscussions at hizantennas.com>

Subject: [Hi-zreceivingarraydiscussions] Hi-Z 4-8 Pro

Message-ID: <24BA2716A3294ADE98A60E0FE5200735 at DenComputer>

Content-Type: text/plain;             charset="iso-8859-1"

 

Hi all,

 

    For some reason I have experienced a sudden increase of 20db noise floor increase in the 4-8 pro array....  Has anyone else ever seen this and what should I look for?

Guess I may need to head to the Remote and try and trouble shoot his.  The temperature is about right for antenna work anyhow...  been around 10-20 degrees all week.

 

Merry Christmas all,

Larry  K1UO