RF FAQ
You must allow all fields in the transmitter status page to be fully complete before entering Login Password for Transmitter Control Page. Also, ensure you ...
Tue, 8 Oct, 2019 at 1:01 PM
The black programming switch is located behind the mesh front panel of the Combiner Unit, you will need to use a flashlight in order to see it, the location...
Wed, 11 Jan, 2023 at 9:36 AM
Assuming that the TX has main AC applied, the most likely cause is the low Voltage power supply has failed in the ECU. The most common failure of the supply...
Tue, 8 Oct, 2019 at 10:19 AM
Try reseating the +48 Volt main PS. Next, check J2-5 on the +48 Volt PS. If there is no control Voltage there, remove the main AC input to the STX Transmi...
Tue, 8 Oct, 2019 at 1:03 PM
Make sure jumper J719 is NOT installed on the Controller board; this jumper disables/inhibits the power raise/lower command when the Tx is reading a fault s...
Tue, 8 Oct, 2019 at 1:06 PM
Most likely issue is that one of the neutralization capacitors (C7, C8, C17, or C18) are shorting under low screen voltage. Remove the neutralization s...
Tue, 8 Oct, 2019 at 1:08 PM
It is possible that the LVDS (Cat 5) cable is not connected/defective, the transmitter is in FM Only mode, or the HDC from the XPi to FXi has dropped out.
Tue, 8 Oct, 2019 at 1:10 PM
Why do the F1 fuses on either the PA modulator or the PA boards of my AM transmitter routinely open?
ther than a hard failure of a device or component drawing excessive current, the most likely cause is that the fuse clips for the fuse have overheated and/o...
Tue, 8 Oct, 2019 at 10:20 AM
The CPE board may be set for isolated ground. Verify the isolated/non-isolated ground jumper on the CPE board J9 is in the 1-2 position. This connects the...
Tue, 8 Oct, 2019 at 1:13 PM
Other than a hard failure of a device or component drawing excessive current, the most likely cause is that the fuse holder for the fuse has overheated and/...
Tue, 8 Oct, 2019 at 1:14 PM