Control and Protection
Triode RF Power
Tried and tested
- over 1000 in use world-wide!
Order The Triode Board
complete Triode Board Manual
'Universal' Control Unit for your Triode Power Amplifier
All on one PC board
Ideal for your new amplifier
or a 'drop-in' upgrade for your existing PA
to one compact PC board
Protects your Triodes,
and helps them deliver a high-quality signal
Versatile - use with either one or two tubes, including 3-500Z, 3CX800, 8877/3CX1500,
GS35b, GI7b, TH308, YD1336
Easy to build
- detailed 'how-to' instructions in 38-page User Manual
Highest RFI immunity
- high-level CMOS logic, extensive RF filtering, groundplane shielding
Designed for 'key-down forever'
Compact - only 5.7 x 3.3in (145 x 84mm)
Height above chassis can be as low as 1.5in (38mm)
- Tried and tested
- over 900 in use world-wide, with many different tubes from Top Band to
microwaves, and from 3CX100 to 3CX10,000!
Cathode bias supply: adjustable 3-33V, precision regulated up to 2.5A
Grid and anode current metering, with meter protection
Status output to four LEDs
Relay TX/RX switching
Warm-up timer - also controls your High Voltage supply
Grid current and HV monitored - fast trip circuits protect your triodes
Anode current monitored for surge protection - also controls mains
to your High Voltage supply
12/24V DC supply for external relays (uses external mains transformer).
Download the complete Triode Board manual (700KB)
- New users: find out all about the
- Existing users: update your manual here!
9 March, 2014
Page (c) 1999-2013 IFWtech.
Some graphics (c) Svetlana, Inc.; (c) Eimac, Inc; GS35B
photo by PE1OGF.