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There are a couple of good antennas that can be used with the RT-524s. The early AT-912 antennas (rectangular shape MX-2799 base) were introduced with the radios in the mid-60s. They were replaced with the AS-1729 (round MX-6707 base) to cut costs. Later on the AS-3900 antennas were...

For your first go-round leave the radio in low power mode and make sure you have a VSWR meter inline with the antenna to measure forward versus reflected power. Key up the transmitter and see what it reads. If your forward to reflected power is 3:1 or better try high power. There's nothing...

First off measure the high voltages on the A9000 module and make sure they're in spec. Your looking at 275 and 700 volts here so if your not comfortable with that find someone who is. This can be dangerous. Then measure the RF into the PA module on the gray cable with an RF power meter. If...