Ok guys, Walk me thru the math in this one !! Good news is I have my ABC chan 1 and chan 2 BACK on my old Fortec Mercury II receiver. Now How I got there: Today was 75 F, Sunny, but a bit windy here in Dallas County.
Per Titanium's instruction, I drove the motor to 0 position and pulled the coax inside to shut off the power. I then climbed up to the antenna and plugged in my two 9 V batteries in series onto the F terminal port going to the motor. With a pocket mirror handy so I could look squarely onto the pointer, I punched the West move button until it moved to the zero mark. Then I pressed the reset sw inside and watched the LED flash and then turn green.
Reconnecting the receiver coax, I returned to the receiver and used the DiSEqC 1.2 menu to find 97 W. I jogged the motor for best Q sig and saved. Then I went to the USALS menu and exercised the 0 and Go to positions. The signal was not there. So, I figured I must be off azimuth position. I returned up to antenna and gave it a hard physical twist to the East. (The USALS position had appeared to be West of the DiSEqC 1.2 position. Returning to the receiver, I checked both positions. This time they both had good Q signals. ( I wonder if I should have changed the Long setting in the USALS menu instead ??)
Now it was time to look for the ABC signals on 91 W. Using USALS, I sent the dish there. There was a weak Q sig, so I went to the TP edit mode and went thru the list. I had previously added the TP 12011 V 13333. Also before did a factory reset, I had Chan1 and Chan2 temporarly. I had jotted down TP 11859 V 13344. I added these to the TP pool and immediately I was getting Q sigs in the 80 + range.
Then I went for the PS (blind scan) and let it finish. Walla ! There were my two ABC channels as well as two Encompas Digital M channels. I suppose these are the HD channels ?
When I went to full screen, there was Blue chan1 with the TP of 12011 V 13333 on the screen. Then to Red Chan2 with the same TP settings. I still do not understand why the advertised TP settings do not seem to work on this Fortec receiver ? So now I went back and recorded my Univ LNB settings for the record. 9750/10600 .In the USALS menu I had set Long = 96.6 and Lat = 32.9
My location data follows:
Garland, TX 75044
Latitude: 32.9415°
Longitude: -96.6628°
I hope with this data you can guide me thru the math of the various mixer frequencies ?
Now I am an amateur Radio Operator with an Extra class license. I should understand the sums and products of two different frequency's being mixed in a mixer circuit. So if someone will point out my errors, I will appreciate it. I know that something is NOT correct about the basic dish set up, but for now I have my 97 w and 91 W signals back. I doubt that the arc will track to the lower birds for PBS and NBC feeds. The dish azimuth is off aprox 5 degrees to the East of due South.
I had previously determined true South by data from a government sun rise, sunset site. I found the local time that the sun would cross my meridian and then observed the shadow of my pole on the ground at that noon time of that day. Magnetic declination is about 3.6 degrees for my location. I wanted something more accurate. I was told by a local satellite installer that the larger the dish, the more narrow the beam. That was the reason it was more difficult to aim in a large dish than a small 30 inch dish.
Thanks for your patience ! 73, George