The smaller dish works great and is a little easier to set up.
We have found that the reception is a little better. However, technically you will find others on the forum that will say they are the same.
Personally, I have found the phase three works better - easier to tweak!
Below is some marketing information from one of the Sat Phase III ODU manufacturers:
Objective
To develop a lower cost, one-dish solution that is smaller and easier to install.
Cost Reduction Approach
Fully integrate the componentry of the LNB’s and 4 output Multiswitch thereby reducing redundancies and streamlining RF pass through
Benefits
- Cheaper wholesale cost than 18 x 24 plus Sat-C Kit
- Smaller, more rounded dish (less tilt adjust)
- Higher performance than 18 x 24
- Receives all services (101, 110, and 119)
Size
18 x 20 – less profile, improved aesthetics
Performance
Improved Noise Factor (NF) of LNB’s translates into higher Carrier/Noise ratio and gain. Similar to increasing size of the reflector.
Easier Installation
- Smaller, rounded dish - provides wider antenna alignment bandwidth
- Lighter LNB’s, less connections, lower currents, tighter 13V/18V threshold
- EZ-Align mast (integrated bubble level)
Product Specs
Dimensions of boxed unit (LxWxH) - 22.44†x 19.68†x 7.09â€
Gross weight of boxed unit (including carton/material weight & pallet) - 13.011 lbs
Net weight of boxed unit (without carton & pallet allocation) - 12.3 lbs