Hi Mike,
Well I am sure that my set-up is very similar to a lot of other op's on this board but here goes!
1) Radio is an Icom 910HX, Rotator is the G5500 and SatPC32 to do the tracking!
Why SatPC32? Because its a dedicated program that does exactly what it says on the tin (unlike Ham Radio Deluxe which is a jack of all trades and master of none, IMHO, and still has Icom issues), has great customer service, all sale proceeds go to AMSAT and a lot of people on the BB use it so there is no shortage of help when needed (Thanks to Alan, WA4SCA!)
2) Interface between 910 and PC is a CI-V clone cable available on e-bay for less than $20
3) Interface between PC and G5500 is an LVB Tracker - why? Again, profits to AMSAT, super after sales service, it works and works well and it really looks nice in my shack! If you have the money then sure, go buy the Yeasu alternative but you can buy an awful lot of other goodies with the change that an LVB will give you!
4) Because I do not have the "proper" Icom CI-V unit, I can only control one radio at a time with SatPC32 so when AO-51 is in Mode S, I use the 910 for the receive side allowing SatPC 32 to calculate the doppler. For transmitting, say on 2m (When in Mode V/S) I use my Icom 706MKIIG and just leave the transmit frequency alone - works like a charm. When AO-51 is in Mode L/S then SatPC32 can do everything I need through the 910. The 706 is only used when Mode S is on as it ties up the 2m band.
5) 1.2Ghz antenna is the helical antenna built and sold by Bob, W7LRD - its solid, performs excellently, Bob is on hand in the event of problems and he donates 20% of each sale to AMSAT.
6) Currently I have a BBQ dish feeding a downconverter but I spoke to Bob (W7LRD) about ordering a 2.4ghz helical antenna which will replace the BBQ dish as its rather heavy and cumbersome. but again, it works and as I paid $15 for it and the downconverter, I really can't complain. But with Dayton next week, I am saving my pennies so I will order the antenna when I get back.
Now one thing that I did not see on your list was pre-amps!
Again in my opinion, you really can not do without them. A lot of people will steer you towards SSB Electronics or ARR as sources and yes, they are great pre-amps but if you are putting a station together and you have the 910 have a think about the much maligned Icom pre-amps - yes, I know they do not publish noise figures and everyone says they are crap etc, etc but you can not blow them up by transmitting through them, they do not need a separate DC feed, they are readily available and they do work. Last evening I had an SO-50 15 degree pass out over the Atlantic and I worked a station and then turned the pre-amp off afterwards and I could not hear him. That pre-amp made the difference between a successful QSO or not one at all.
Now I know that people reading this will say, "hang on, 15 degrees, why the big problem?" but let me explain that currently I live in an HOA community that does not like you painting the front door or changing the brand of toilet tissue without having written permission from the Board of very old people with far too much time on their hands. So my antennas are probably no more than 6 feet off of the ground within the confines of a pool cage. Whilst that sounds very restrictive, and to an extent it is, I work all of the analogue birds, the ISS and I get pictures from the weather sats. Last month I worked 171 stations. So it can be done.
I hope that some of the above is of use, if you want any pictures of what I have here then please e-mail me off the BB and I would be happy to send you some.
73's for now
David