Greetings. Direct TV just installed two SD receivers (D12MP-700) and a slimline dish with a SL3S4NR5-01 LNB. They work great. As an experiment I tried to hook one of the receivers up to a ten year old Direct TV 18 inch dish which has a BSNA5-501 LNB. The signal strength meter I had in the line indicated a strong signal when I was pointing the dish to 101 degrees west but the receiver said there was no signal. So I guess my first question is whether the two LNBs are not compatible.
I am familiar with LNB technology that converts the DBS Ku band (12.2-12.7 GHz) down to 950-1450 MHz which goes down the RG6 coax into the receiver. Does anyone here have the technical details for the typical LNBs in use today? Is the IF frequency still only 950 to 1450 or has it gotten more complicated? Are the LNBs changing polarization? I remember that the Free to Air fixed satellite service LNBs (11.7 - 12.2 GHz) had to switch between vertical and horizontal polarization.
Thanks for any details you can share with me
Craig in Houston Texas