When repairing RF amplifiers there will be a few things out to get you.
1. High Voltage
2. RF Radiation
3. Electromagnetic Radiation (EMR)
Do not open up your
amplifier unless you know what you are doing!
Tube amps work with lethal voltages that can remain in the amp even after
it is unplugged.
If you don't know how to discharge filter caps and how to safely work
on your amp,
don't try it. If you or your amp die, I am not responsible.
Some tests necessary
to repairing a tube RF amplifier may require you to perform
operations inside the amplifier with voltage on. These tests can be hazardous
perform if you do not know the specific methods to do them safely.
Such hazardous tests the author does not recommend that you should perform
these tests, especially if you do not already have the skills and experience
to do them without harming yourself, other people, or the amplifier you're
These skills are not things that you can safely learn by yourself from
reading some text.
A good plce to start
are the following web sites.
for High Voltage and/or Line Powered Equipment.
RF Radiation Electromagnetic
This disclaimer is
not intended to teach you how to do these tests safely.
If you need to do any test on the inside of the amplifer chassis, you
do not already
know how to do such tests safely, take your amplifier to a qualified service
Saving a few bucks is not worth endangering your life.
If you have any question in your own mind about being able to do any
test safely don't do it.
The best way is to learn the requirements and practices for safety in
tube equipment is to find and read tube and equipment manuals and THEN
FIND someone who will teach you one on one.
Factory schematic may have errors in them so always keep safely in mind.
to the Main Amp Index
shown here are provided for properly licensed operators only!
The user is solely responsible for making sure that any modifications
made to the radio unit must meet all Federal and State Regulations or
the Country of use! Liability of damages to any equipment is the sole
responsibility of the user! Downloading , viewing, or using any information
provided on these pages automatically accepts the user to the terms of
this agreement! Modifications are provided for information purposes only!
Trademarks, Logos, and Brand Names are the the property of their respective
This information is not provided by, or affiliated in any way with any
radio or antenna Manufacturers.