Preparation
The TADD-1 kit includes the printed circuit board, a bag with seven BNC connectors, and several manila
envelopes containing small components. Parts that are used in quantity are in separate envelopes, labeled
with the component each contains. One or more envelopes labeled “Misc.” contain parts that are used in
small quantities. Integrated circuits and transformers may be stuck to anti-static foam, or be placed in plastic
tubes. The 7809 voltage regulator will be in one of the “Misc.” envelopes. Check to make sure your kit
includes all these bits, and check the contents of the envelopes against the parts inventory below. If anything
is missing, contact the TAPR office.
Refer to the layout diagram for clarification of parts placement. All references to up, down, left, and right
assume that you are looking at the PCB with the "TADD-1" text and copyright notice along the right-hand
side of the board. All components are mounted on the top of the PC board.
If you plan to mount the TADD-1 using the four corner holes, now is a good time to use the PC board as a
template for marking the mounting holes in your enclosure.
Check your soldering iron to be sure the tip is in good condition. The tip should be the small conical tip type
and must be clean. If you can't remember when you last replaced the tip, now would be a good time to do so.
All parts should be mounted as nearly flush to the board surface as practical without stressing the lead.
