Rca tvpramp1r
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I have a DB8 and a Antennacraft Y5713 aimed 180 and 147 as recommended with a RCA TVPRAMP1R preamp on one 18' mast. My signal levels vary wildly, going from signal to nothing in seconds. During a recent power outage I lost all UHF stations, but not VHF. Shouldn't I have lost all stations? I'm thinking my problems must be preamp related. I've contacted Audiovox several times and they referred this to technical. They replied they "don't have an answer" for me yet. |
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Do you have trees in front of the DB8 or do you have a clear shot to the horizon? |
Conditions don't really matter, I intermittently loose all channels, but especially 19 fox and 18 kusi. I have some local trees but do my best to aim accordingly.
Thanks... |
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Including ch 8 & 10? Quote:
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Sometimes I'll lose 8 & 10. Usually it's Fox 19 and or KUSI 18. Fox will drop while every other station is fine, even is it's signal is stronger. I have aimed the DB8 at 147, it's a little hard to tell with a flat antenna.
Audiovox has offered me a preamp exchange, but I don't know if it's worth the trouble if it fixes nothing. |
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As luck would have it, your required aiming direction for the VHF antenna is almost exactly perpendicular to your roof's main ridge line. The UHF antenna's aiming direction is going to be about 21 degrees to the "left" or east of that azimuth. Based on the aerial photos of your property, I don't see a tree-free path to Mt San Miguel, though. Your location makes a pre-amp for UHF absolutely mandatory. VHF amplification isn't required, but it's unlikely to harm anything. |
I seriously doubt it's the preamp. How far apart are the antennas? I am assuming the DB8 is on top?
Unfortunately the UHF stations are running mediocre power levels & you are 50 miles away. They are only running about 200-300,000 watts which isn't great for UHF. The signals are weak & unfortunately susceptible to dropouts. |
I did use TV Fool satellite pics to align to landmarks, VHF was easy.
Thanks for the right angle formula for UHF. I'll check that. My antennas, DB8 on top are 3 about feet apart. |
PA. DTV reception
I use the RCA amplifier in all of my U/V installs. It works great but I have noticed power supply sensitivity. Since the system failed after a power outage and possibly an electrical surge, I would take audiovox up on that exchange offer.
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