Node Computer/Supply Shelf Parts List
See also
FAQ: Node Details for a block diagram of a node.
last changed September 24, 2023
Some of these parts are only available in quantity and there are tools required that a single ham might not have or want to acquire for a private workbench.
Please ask your local TARPN network group for help in choosing the appropriate parts.
If you are starting a new group, write to the
TARPN email reflector.
Work with the group.
It's more fun that way, and it is certainly more efficient.
This is what went into the a box to complete a the common computer/supply level of a multi-port node in early 2023.
| quan | Description | each | subTotal | source |
| 1 | DC Power Supply, 12-14 V 20-40 Amps | 40.00 | 40.00 | eBay |
| 1 | DC Power Supply, 14.2 V 1 Amp | 10.00 | 10.00 | Mouser RS-15-15 |
| 1 | Raspberry PI 4B 2GB RAM | 48.00 | 48.00 | Amazon or Canakit Latest B model |
| 1 | DROK variable output regulator | 9.71 | 9.71 | Amazon B00JUFJ1GA |
| 1 | Fuse Box | 12.00 | 12.00 | Amazon B00QMTAZ1W |
| 1 | gel cel 12V 2.2Ah PS-1220-10 battery | 18.00 | 18.00 | Amazon B08PMN8B2W
Note: $12 in quantity 12 |
| 1 | Square D Ground Bar | 5.00 | 5.00 | Amazon B002FQKSKO |
| 2 | #10 (12-10) Ring Terminal | 0.12 | 0.24 | Parts Express 095-222 |
| 8 | 1/4" push-on female
disconnect crimp terminal | 0.12 | 0.96 | Parts Express 095-290 |
| 12 | 30amp powerpole pins | 0.30 | 1.80 | Quicksilver Radio |
| 6 | RED/BLACK Powerpole
(red/black bonded pair) | 1.13 | 6.78 | Quicksilver Radio ppl-wld-hsg |
| 1 | bridge rectifier | 1.84 | 1.84 | Parts-Express 050-030 |
| 1 | 56ohm 10watt resistor | 0.54 | 0.54 | Parts-Express 016-56 |
| 1 | velcro (feet) | 0.90 | 0.90 | Amazon B00006RSWT |
| 1 | pack of 5 USB-A to USB-B 36" cable | 12.00 | 12.00 | Amazon B01J6AF7BG |
| 3 | jumper wire (feet) | 0.15 | 0.45 | Surplus |
| 12 | 16 gauge red/black zip cord (feet) | 0.15 | 1.80 | $15 for 500 feet at eBay for 12VoltWire store |
| 1 | multi-shelf node box | 25 | 25 | hunt down a local carpenter |
| 1 | TARPN Control Panel | 25 | 25 | KK4KFG sells the kit |
Total cost is about $215.
To complete the node you'll also need NinoTNCs ($40 depending on quantity and shipping), radios, coax, antennas, mounting hardware.
I'm partial to LMR400-clones from Jefatech and Shireen (eBay or Amazon or direct).
I also like Diamond A144S10 yagis and Diamond X300A antennas with MFJ diplexers.
