How do I connect the Ameritron PNP-35 Amplifier Keying Interface Cables? (AMERITRON Amplifier Keying Interface Cables Instructions Manual)

Answer

manuals.plus

Mar 07, 2025 - 02:42 AM


To connect the Ameritron PNP-35 Amplifier Keying Interface Cables, please follow these instructions:

1. Connect a Phono cable from the AMP jack of the ARB (Amplifier Relay Buffer) to the Amplifier's Relay. This cable will prevent damage to the radio from amplifier keying voltages.

2. If you are using Automatic Level Control (ALC), connect a Phono cable from the ALC of the ARB jack to the Amplifier's ALC. This will ensure proper control of the amplifier's output level.

3. Connect the 5-pin end of the "plug and play cable" into the multi-port of the ARB. Then, connect the mini stereo end into the ACC jack of the Yaesu FT-100 transceiver. This cable allows for seamless communication between the transceiver and amplifier.

4. Finally, connect power to the ARB's power jack. The red wire is positive, and the black wire is ground or negative. Make sure to observe proper polarity when connecting the power.

Please note that the ARB-704 should only be used with amplifier relays that are pulled to ground to activate. Most commercial amplifiers manufactured after the mid-1960s are safe to use with this unit. However, it is always recommended to check the relay connection on the amplifier panel. If the connection is through a phono (RCA) jack or has one terminal directly grounded to the chassis, the ARB-704 will almost certainly work.

For any further assistance or troubleshooting, it is recommended to contact Ameritron Technical Service at (662) 323-8211 between 8:00 a.m. and 4:30 p.m. CST, Monday through Friday. They will be able to provide specific guidance based on your setup and address any concerns you may have.