AT9 ports 1 & 2 voltage test results

[fo71]

Hi there... I know there is a fairly long thread out there discussing reception from 3 differents antennas (99-101-103 , 110 and 119). This did not work mainly beacuse of the different voltages levels used in the 110/119 lnbf assembly compared with independant 119 and 110 "normal" LNB´s.

We´ll... I set out to test what those levels where using the Andrews LNB assembly and here are the results:

Port 1 Port 2
18v, 0khz 0v 0v
13v, 0khz 0v 0v
18v, 22khz 5v 5v
13v, 22khz 5v 0v

It seems this new circuitry toggles 110 or 199 by sending 5v to port 1,or port 1 &2.

Whats next ? Are there still some of us commited to get 3 antenas running?

Bye.....

[P Smith]

Remember ? Even tpns combined from 110W (three) and 119W, but odd tpn getting from 119W only. So, what order sat LNBFs connected to Port1 and Port2 ? And how the LNBFs will works without any voltage ( 0 V, 0V ) ?

[fo71]

Remember ? Even tpns combined from 110W (three) and 119W, but odd tpn getting from 119W only. So, what order sat LNBFs connected to Port1 and Port2 ? And how the LNBFs will works without any voltage ( 0 V, 0V ) ?

In both scenarios (110 and 119) the 22khz signal is sent, thats when those LNBF´s operate and according to my posting.... every time there is 18v @22kkz from the receiver side, 5 vdc is sent to port 1 and 2, when voltage is 13v@22khz on the receiver side, only port 1 gets the 5 vdc., port 2 output is 0 vdc

[veryoldschool]

maybe this might help:
Polarity ______RHCP____ LHCP ______RHCP ________LHCP
Output ________13 V DC __18 V DC ___13 V 22 kHz ___18 V 22 kHz
Ka-Lo 250 to
750 MHz ______99º Odd ___99º Even __103º Odd _______103º Even

Ku 950 to 1450
MHz _________101º Odd __101º Even __119º Odd ______110º/119ºEven

Ka-Hi 1650 to
2150 MHz _____99º Odd ___99º Even ___103º Odd ______103º Even

[P Smith]

Well, those 110W/119W LNBFs really lower power devices, if require only 5VDC.

[litzdog911]

Also explains why I was unable to combine standard LNBs with the AT9 LNBs to combine multiple dishes together .....

http://www.dbstalk.com/showthread.php?t=62223

[Ext 721]

Well, those 110W/119W LNBFs really lower power devices, if require only 5VDC.

since when did voltage equal power? A static shock from touching a doorknob in winter (4,000v or therabouts) is much higher voltage than you car's alternator (12-13 volts) , but guess which one will burn your flesh or kill you?:rolleyes:

[veryoldschool]

since when did voltage equal power? A static shock from touching a doorknob in winter (4,000v or therabouts) is much higher voltage than you car's alternator (12-13 volts) , but guess which one will burn your flesh or kill you?:rolleyes:
Which dry hands and no rings: Neither. 12 volts is used in car just for this reason.
Drop a wrench across a 400 amp battery connection and that's another story [burned, but not dead].
I wish people would use meaningful examples. :)

[P Smith]

since when did voltage equal power? A static shock from touching a doorknob in winter (4,000v or therabouts) is much higher voltage than you car's alternator (12-13 volts) , but guess which one will burn your flesh or kill you?:rolleyes:
I could provide the numbers ( current ) but I will left the measure for you Ext721. Just want be sure you're the person who can use multimeters, not just be a typist. :D

[maf00143]

what does that lnb look like inside?


*WARNING*
Disassembling your LNB my render it useless