Spring Cleaning Tune Up Day 2013
We had some success and some failures on the rounds today. The Downtown site
we got rid of the nasty ground loop that had been bothering the system for a long while.
Basically what was done is we added a 600 ohm 1 to 1 transformer between the radio interface and the Linux controller and fixed the signal ground that was lacking. Also we gave the cooling fans their own power supply as well which helped in the motor noise issue.
The fan noise was masking the ground hum issue which was found after we moved the fan power supply source. so we had in reality 2 issues.
Here is a few pictures of the downtown site.
|442.5500 Repeater & Linux Controller
|Our Antenna Farm
|2 of Our Fine Feathered Falcon Friends Nesting.
|Our 927.1125 Repeater and the WB0KIA Central 224.100 Mhz Receiver Rack.
The 900 Mhz repeater has a transmitter problem, so we will have revisit this on another day.
The 224.10 Central Receiver checked out and was working fine.
Next we had brunch at a local Denny's ( thanks Chuck! ) & then went out to the east side of
Kansas City to our Booth Tower site. to repair some issues we had out there.
The 224.20 Repeater was restored to operational status after the feed line was damaged due to vandals this past fall. We also rebooted the LiveATC.net audio feed server so we could hear the KCI airport planes again. As it had shut down after the storms the other night. Found out that the UPS battery has crapped out , so UPS batteries are on order now.
More to come..... All for now comments are invited.