RF FAQ

Why is the High Voltage on my single phase FM 10T/S higher than normal?
The most likely cause is that C2 or C3 across L3 in the HV cabinet has become defective. The resonate HV power supply is not resonating at 50 or 60 Hertz (d...
Tue, 8 Oct, 2019 at 2:21 PM
Why is the output power of my FM 100C pegged and/or maxed out at 125 Watts?
The most likely cause is that the Q401 & Q402 pass transistors (p/n 219-3000) on the RF Amp asssembly are defective.
Tue, 8 Oct, 2019 at 2:22 PM
Why isn't the APC on my FM-T TX raising the TPO when HV is applied?
This indicates the APC is inhibiting the raise function. To isolate which inhibit is active, with HV applied, press the Filament "ON" and Over Loa...
Tue, 8 Oct, 2019 at 2:24 PM