I have a KIWA loop antenna that is not working. It was dead after taking it out of storage after a couple of years. Physically it is in mint condition and was stored away from heat and high humidity.
Bottom line is that I detect no output from the antenna on my communications receiver. It will not tune to any frequency, and therefore will not null.
Kiwa no longer manufactures this antenna and consequently provides no support for it. They have ignored my requests for help or information on circuit operation or diagnosing the problem.
The schematic is attached for reference. Unfortunately there are no voltages or bias states noted.
So far I have examined some of the obvious simple things. The coax from antenna to receiver was substituted with RG8. The power supply from the AC adapter to the output of the regulator checked OK. Continuity of the cable between the ctrl box and the preamp is good. I cant find any output signal either at the preamp output or the SO239 connectors with a scope.
Can anyone help?
Bottom line is that I detect no output from the antenna on my communications receiver. It will not tune to any frequency, and therefore will not null.
Kiwa no longer manufactures this antenna and consequently provides no support for it. They have ignored my requests for help or information on circuit operation or diagnosing the problem.
The schematic is attached for reference. Unfortunately there are no voltages or bias states noted.
So far I have examined some of the obvious simple things. The coax from antenna to receiver was substituted with RG8. The power supply from the AC adapter to the output of the regulator checked OK. Continuity of the cable between the ctrl box and the preamp is good. I cant find any output signal either at the preamp output or the SO239 connectors with a scope.
Can anyone help?
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