Its that time on year to spray down and clean the outside "coils" on transmitter and building cooling units. Also chain filter and belts (even before they break). We have water on site and spray clean the cooling coils. I have seen HVAC carry in water to do this.

The Problem: "The Harris Sigma IPA has shut down a few times with no faults on transmitter or in logs. The green lights go out for power and IPA, sometimes the IPA voltage light is finicky, though its on now. If I goto standby and back. It resets to normal. I replaced an IPA power supply … Continue reading Harris Sigma DTV Transmitter fiber cables. →

The GUI is a transmitter monitoring computer inside the Sigma transmitter. The touch screen failed (the video) so I built another computer for the job. Items needed. Windows 2000 computer with LPT port and 2 com ports - com 2 and com 3- all setup and tested in advance before installing GUI software the ports. … Continue reading Harris Sigma DTV Transmitter GUI computer – Build your own. →

Silence Alarm. With station automation so prevalent a good silence alarm is about mandatory. Broadcast tools VAD-2 fits the bill and its cheap. It is rather a pain to program but beyond that it dials a call list when silence is detected, ours is now set at 30seconds we had it at 1:30 but time … Continue reading Silence Alarm →

Pending Project 04/21/09 JAW parts-hp-fence tower-fence-drawing I found a company for Ice Bridge parts here. http://www.bettermetal.com/l/index.html  One question to answer, Is the bridge allowed to attach to the tower? 19' from building to tower. 10' to outside building 9' to tower.

Harris uni-coder- Lucent wavestar model ws2-ac With EVA-162 and NIM100a cards smpte 310 output with Logic innovations tsm-2800 mux only one smpte 310 input others sdi. smpte 310 output to exciter. Contact: 222-8200 or 217-221-7529 harris- mark schlinkmen Closed captions for unit. TE500A DTV Line 21 Transcoder http://www.eegent.com/te500.htm -- ------------------------------------------------------------------------------ The EEG DTV Line 21 … Continue reading Harris uni-coder →

Hello,Suspecting the arc detector to be bad on the primary cavity I replaced it with a new one from Harris broadcasting. part#378-0180-000 $485. When I tested it the arc detector fault did not come on so I tested in a black box and it worked when examining the new and the old detector ... the … Continue reading Sigma arc detector E2v →

Hello, Wednesday night around 2030 pm the WTJR analog Transmitter shut off with a secondary cavity ARC fault. It returned it to air during Richard Roberts Program. This is the 4th time recently I have seen this fault. It is a terminal fault requiring a trip to the transmitter site to reset. It appears to … Continue reading WTJR Tower site Report June 7 2007 →