01-13-02, 09:53 PM
Has anyone had any problems with the Sony B-65 wideband tuners in MDU stacked trunkline applications? I have two receivers that miss several even numbered transponders (meaning, zero signal "strength"), always including transponders 10, 12, and 14 among others, and produce shabby numbers on transponder 9, but when I set them back into standard tuner mode and use an external Holland SFE-450 block downconverter, they work well. I also tried two different reception antennas, two different stacked LNBs (both Cal Amp) and amplified the trunk to different signal levels within the suggested operating range of the receivers and line amplifiers.
I know that with the B-55s that sometimes when they are set in wideband tuner mode, the self test says that there is zero signal strength on some of the lower odd numbered transponders, most commonly transponder #3, even when they are healthy enough to develop good pictures, but I had hoped that since these new Sony receivers are made by Hughes, the faulty self-test problem would be behind me. Unfortunately, I did not have a channel-transponder chart with me to check and see if the receiver could actually tune programming from any of the transponders that came up as "0" on the self test. I will return to the site to investigate that possibility later this week.
I know that with the B-55s that sometimes when they are set in wideband tuner mode, the self test says that there is zero signal strength on some of the lower odd numbered transponders, most commonly transponder #3, even when they are healthy enough to develop good pictures, but I had hoped that since these new Sony receivers are made by Hughes, the faulty self-test problem would be behind me. Unfortunately, I did not have a channel-transponder chart with me to check and see if the receiver could actually tune programming from any of the transponders that came up as "0" on the self test. I will return to the site to investigate that possibility later this week.