After you account for the offset from that flat antenna, you should definitely have much, much higher SNR. The antenna gain of the MK1 is about 12 dBi, whereas the flat antenna is 26 dBi (if I remember correctly). The thing to remember, though, is that the higher the gain, the smaller the beam width, which makes pointing more difficult.
When you are talking about 1m reflector, the aperture of the antenna is the dish itself–the LNB (MK1) is largely irrelevant. That 1m aperture yields plenty of gain (~36dBi?), but also a really tiny beam width (~2 degrees).
My guess is that the flat antenna will work, it will just take a bit of trial and error.
Good point, maybe the technical guys can determine the specs or software modifications
if an lnb with a different LO then the 10.750 Ghz that is in the Maverick MK1
I have a Geosat sl1pll that is working since it has the same parameters as the Maverick
update : my research says direct tv and dish use a rectangular mount for this 18" dish the
lnb is circular 12.2-12.7 GHz and a 11.250 local oscillator to down convert to 950 -1450 Mhz
So unless I can find “latin America” version which has a lnb rated 11.450 - 12.200 and which
block converts down 10.500 to 950 -1700 Mhz. I would have build a bracket to hold a “standard” lnbf.
I’m using #1 with old DIRECTV dish. I had to bent the bracket somewhat to get the best illumination. You can raise the Maverick-1 up and down about an inch and slide the LNB forward and backward too.