[Hi-zreceivingarraydiscussions] Array (4sq) not working properly

[Lee K7TJR]

What is the proper way to verify a good connection to the shield on the coax feeding the array ? 


I am going to send the components in to have Lee check them out as something is not the way it should be.
Customer service at its' best !


Randy


On Tue, Sep 18, 2012 at 11:47 AM, Lee K7TJR <k7tjr at msn.com> wrote:

  Gm Randy, There were a few Hi-Z amps that were built AC coupled in the early days and did not show the 5Volts on the element terminals. In that case you might have to pop the cover on the amp and measure on one or the other end of the 200 ohm resistor in the circuit. One way to check all the amps is to tune in a BC signal or constant signal and remove both delay lines. As you select a direction then the array output will only be from the single element in the direction selected. They must all have very close to the the same output level or there is something wrong. Any element not producing will destroy the pattern of the array. Also if there is a marginal connection on the ground shield of the output coax to the shack, the whole array will just act like a big piece of wire laying on the ground and performance will be bad. Also double check that one of the element/ground terminals is not reversed on any of the Hi-Z amps. I will send you a private e-mail with my phone number so we can get this straightened away. I doubt that the ground conditions are causing much of a problem.
  Lee K7TJR  







-- 
Randy Lake N1KWF
73 Gunn Rd.
Keene,NH