Tuesday, December 6, 2011
We are currently working to make sure we can operate TX6 for many years to come. Much of that work is consumed in locating and aquiring spare parts to fill gaps in our stock room. Once this is done, we can put more effort into getting TX7 on the air. There are some things we can do in TX7 now.
Here is Jeff inserting modules into the modulator section. One reason this was done now is to make room for other equipment in the container in which these were stored. An amazing amount of space can be created just by stuffing parts into these large transmitters.
Speaking of Jeff, he has been on Guam for a few months and will stay into the middle of next year. He will function as the chief engineer while Mike is in the States for his furlough. Jeff will be helped by Phil, a short-termer working as a technician. Short-term help like this is very handy because our permanent staff is so small. We can definitely use more engineers and technicians at KTWR for career and short-term service.
Sunday, October 30, 2011
Monday, October 3, 2011
The antennas at KTWR are all curtain antennas made of dipole arrays. The one we used in the test is nearly identical to the one shown at the right. It is configured as a 4x4x1.0. This means it has 4 columns of 4 dipoles each with the bottom dipole being one wavelength above the ground. There is a reflecter screen hanging behind the dipoles to force the signal to have one main beam instead of two. The gain of this antenna can be as high as 22dB, depending on frequency and slew angle. That makes the 75KW signal coming from the transmitter seem like 11MW heading to desired coverage area.
One problem with the tests was that signal propagation conditions in the ionosphere did not allow the signals to be received in India, as far as we can determine. Had we performed these tests at night, the signal would probably have been very strong there. A great deal of planning goes into the frequency choice and the timing of our broadcasts, so that they will be reliable for the entire broadcast season.
Friday, September 16, 2011
Friday, September 2, 2011
A few more accomplishments at KTWR…
We are very Happy to report the Content Server Works Very Well!!
Tuesday, August 9, 2011
Considerable progress has been made in Connecting Power, Air and Water cooling systems. Most connections were completed just before Marc Moreau (Thomson Engineer) arrived for an Installation evaluation and inspection.
For the next week the project team worked 12 to 14 hour days testing, repairing electrical control components, fixing water cooling leaks, rebuilding computers, etc….
We are pleased to report on 9 August 2011
we successfully accomplished an initial power up RF test. For about 10 minutes we aired a station ID test and music tone at 0500 UTC on 31M at 57KW.
9 August 2011 Thomson Transmitter status display indicating all systems "ON":
Thank you for your continued prayers as we move forward to reach the Late October goal for sustained broadcasts using this powerful communication tool!
RF Test Video