| Brand | Unbranded |
|---|---|
| Type | RF Sensing circuit |
| Number of Inputs | 1 |
| Model | KeyPNP |
| Number of Outputs | 1 |
| Country of Origin | United States |
Check the listing for details. Nomad Radio linear RF keying board quantity * FIVE *. Condition: Open box, Made in United States. Listed at 80.00 USD. It's a keying circuit, folks. It's built to work with a negative-ground powered DC relay. One of them has a resistance value of 2.2k (three red bands) and one 4.7k (yellow-violet-red). The 2-Watt resistor supplied with this board is installed between the solder pad marked "In" and the center pin of the amplifier's input or "Radio" socket.