Spoiler Alert: This chart contains information about all of the Omega Tech cards, including those found in expansions, booster packs and promo cards. If you are a player or DM who wants to preserve the mystery of the random deck, stop reading.
The chart is sorted by the salvage level ("N/A" if the item can't be salvaged) and contains the name, equipment slot, and source (Ishtar, Area 52, or Xi) of the item. It also includes the rarity (Starter, eXpansion, Common, Uncommon, Rare, or Promo) of the card, the set the card comes from (Starter, Legion of Gold, Booster, or Promo), and the number of the card.
For convenience, I have also made the chart available in PDF format.
Gamma World: Omega Tech By Salvage Level