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Thread: Lightning Strikes & Two Systems?
09-03-2012 11:05 PM #13
Lone, I don't think it's the SAMI, most likely the location it is in. No lightning strikes so far on my sami, it's been in the same place since about 1997, and looks, to me, to be in a great location to catch a strike, lol. We've had some great electrical storms over that time too. Maybe just have been lucky so far!
Icon 550, Vantage 1100HD (thanks Stogie) on .90M primestar DG380 motor.10'Sami+GI650 for c-band.
CS5000 now on 1m primestar-polar mount backup system.
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09-04-2012 08:21 AM #14
I've been told that sometimes the "ambient static electricity" associated with lightening can overwhelm the sensitive amplifier in an LNB(F), causing burn-out.
09-04-2012 08:56 AM #15
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A little update here too, I just switched over to a Ku TP on that SAMI system and it works on Ku, not on C. Was thinking the switch may be bad but since it requires 22Hz to make the switch to Ku, then that theory is shot. Since I've got an external 22Hz switch in my spare parts I may just put it in to double check it though.
Ennywhoot, there's a UPS and an 8' ground rod in this system's future! Anyone have a suggestion on the UPS?10 ft Winegard, DMX-741S LNBF, VonWeise Mover, AZBox Ultra/Openbox S9 and PowerMax Vbox X.
7.5 ft SAMI, DMX-741S LNBF, SuperJack Mover, AZBox Elite/Openbox s9 and PowerMax Vbox X.
AND RANDY WILLIAMS (lying MOFO) GAVE MY 12FT CONIFER DISH TO SOMEONE ELSE!
09-05-2012 10:16 AM #16
Be extremely cautious. Many will recommend a UPS only rated at hundreds of joules. Near zero protection. Recommended if critical numbers - manufacturer specification numbers - were ignored.
Ground blocks such as GRB-1 and GRB-2 at (system requires you to reconstruct URLs):
www dot qintar dot com slash html/tv/f-con.htm
www dot dbsinstall dot com slash N-images/Whatis/Driploop-1.jpg
may even cost as much as $4 in Lowes or Home Depot.
09-08-2012 04:43 AM #17Supporting Founder
Noting back to someone that said the LNBF wasn't attached to anything - well, it IS. The feedhorn probe will pick up static and a discharge can fry the beast.
Making sure the dish and the LNBF (via coax shield) are at the same potential is important. Beyond that, the arguments abound!
Usually, more than one "side" is right - depending on where you are.
Me, I live in the #2 lightning strike county in the USA, in the land of Pikes Peak granite. It's almost impossible to drive an 8' rod anywhere - but when that 4'er mashes directly into bedrock, I'd say you're "grounded". We rarely lose outdoor equipment - even with an extremel lightning hazard.
Indoor stuff on the other hand gets hit all the time - in houses that have wiring faults or don't use REAL surge protectors - often daisy-chained. Me, I run UPS behind 3000+ joule surge protectors. The electric company has spent a lot of money on lightning breakers, too - they work quite well.
P.S. Ground blocks are nothing more than a way to connect a wire to the coax shield. Electrically, they are the same as soldering a wire to the shield, but a LOT easier. They are NOT the same as a "lightning protector" which is usually a gas discharge bulb.
Last edited by SimpleSimon; 09-08-2012 at 04:50 AM.
09-08-2012 09:38 AM #18Pub Member / Supporter
Say, would you happen to have a part number or picture of those "Grounding blocks" that you are using?Raydx 10.5': Dual C ( H2H Programming ) (1) DSR-920: (2) DSR-920: (3) DSR-920
Raydx 8.5': Mover DSR-920: DMX242, Traxis DBS3800, Pansat 2700A
Unimesh 7.5': BSC421, Mover GI 450i, Pansat3500, GeoSat100c
Channel Master 7.5': Mover GI 350i: BSC421, DSR-R100b, Openbox S10, CS5000, MRX-1200
Channel Master 8': BSC421, Openbox S10: New Receivers: Traxis DBS2800 X 3ea.
Prodelin 1.2M: Dual KU: Prodelin 1.2M: Geosatpro MicroHD X 2
OTA: Tower 35', Ham II Rotor: (UHF) CM4251 & CM7775, (VHF) CM3617B & CM7776
Blonder Tongue MUVB-56 Distribution Amp: Channel Plus Modulators Qty 9 : FS1 Meter
Blonder Tongue Digital Field Strength Meter DFSM-10
Dish Network 322/ Family Package: Prodelin 1.2M