The PC-1A Phone Patch Controller connects a transceiver to a telephone line, offering high isolation between receiver input and transmitter output in a compact design. It complies with FCC Part 68 and includes accessories such as cables, microphone plugs, and a warranty card.
The manual covers installation steps, wiring diagrams, control functions, adjustment procedures, specifications, and service instructions. It also contains FCC registration details, wiring standards, and an errata sheet for corrected connector pinouts.
| Line Impedance | 600 Ω nominal |
|---|---|
| RX IN Impedance | 8 Ω nominal |
| SP OUT Impedance | 8 Ω nominal |
| Microphone Impedance | 50 kΩ nominal |
| Ringer Equivalence | 2.24 " |
The FCC registration number is ALHOTK-70300-OT-N.
You must call the telephone company to have them install an RJ‑11 jack and provide the registration number and ringer equivalence.
Set the RX GAIN control to its maximum (10) and then adjust the NULL control for minimum meter deflection.
Adjust the NULL control until the meter shows minimum deflection, then return the switch to the MONI position.