Triton IV Digital Model 544

Solid state transceiver covering 3.5 to 30 Mhz with 200 watts input on all bands.

• One-Sixty Converter Model 240
• Remote VFO Model 242
• Crystal Oscillator Model 241
• Microphone & Stand Model 215P
• AC Power Supply Model 262M
• AC Power Supply Model 252M
• Antenna Tuner Model 247
• Noise Blanker Model 249
• CW Filter Model 245
• Additional Crystals Models 212 and 213
• Mobile Circuit Breaker Model 1140
• Eleven meter crystals 211A 27.0-27.5 MHz and 211B 27.5-28.0 MHz "for the 11 meter band in those countries where these frequencies are authorized" - fit in 10M xtal slots

• eHam
• Product Review, QST, 1979, July (Must be an ARRL member and logged in to view.)
• Product Review - Supplement, QST, 1979, August (Must be an ARRL member and logged in to view.)

• Identifying the Triton IV and Models 540/544

• Add QSK Amp Loop Mod
• Triton Power Connector
• Triton VI Service Note SN-1-540 - Using Accessories with the Triton IV

• Triton IV Sales Brochure (1.2 MB)

From the Ten-Tec Reflector November 1, 1999

Ten-Tec was threatened with legal action from a major communications company over the use of the name "Triton" for radio equipment. Rather than have David fight Goliath, we politely changed the name of the radio from the model 544 Triton IV to the "Model 544" - the "Model 544" name plate on the front was used for approximately the last year of production of the model. After that, our top of the line radio became "Omni…"

73,

Scott Robbins, W4PA

Amateur Radio Product Manager

• Frequency Bands: 3.5 - 4.0, 7.0 - 7.5, 14.0 - 14.5, 21.0 - 21.5, 28.0 - 28.5, 28.5 - 29.0, 29.0 - 29.5, 29.5 - 30.0 MHz. Ten meter crystals furnished for 28.0 - 29.0 MHz.
• All circuits permeability tuned.
• Tuning Rate: Tuning vernier 25 kHz per revolution, typical.
• Direct frequency readout: Six digit, 0.43" high LED numerals. Least significant digit indicating 100 Hz green, all others red. Accuracy - 100 Hz.
• Calibrator: No calibrator
• Automatic sideband selection, reversible
• VFO Frequency Stability: Less than 15 Hz change per F^o, averaged over a 40^o change from 70^o to 110^o, after 30 minute warmup. Less than 10 Hz change from 105 to 125 VAC line voltage when using TEN-TEC power supply.
• Power Required: 12-14 VDC, 1 A receive, 18 A maximum transmit.
• Modular Contruction: 10 plug-in assemblies and 9 fixed circuit boards.
• Semiconductors: 65 transistors, 38 diodes, 14 IC's, 1 LSI, 6 LED displays
• Power switch remotely controls power supply.
• Snap-up front feet.
• Contruction: Rigid asuminum chassis, sub-panels, top and bottom. Cycolac plastic side panels.
• Finish: Etched aluminum panel, textured black top and sides
• Dimensions: HWD 4.5" x 13.625" x 13"
• Weight: 12 lbs.

• Mosfet RF Amplifier
• Preselector Resonate Control
• Sensitivity: 0.3 uV for 10 dB S+N/N.
• Filtering: 2.6 kHz bandwidth, 1.8 shape factor at 6/60 dB points. Optional CW Filter - 150 Hz wide, two positions, shape factor 7.2 at 6/60 dB.
• AGC Controlled by RF Gain Control
• Meter Automatically Switched to "S" meter when receiving
• Offset Tuning with Defeat Switch and LED Indicator
• Built-in Speaker in Bottom
• External Speaker/Phone Jack
• Less than 2% Audio Distortion
• WWV Reception at 10 and 15 MHz

• 200 Watts Input, SSB and CW, 100% Duty Cycle
• Instant Band Change, No Tune-up Required
• 8-Pole SSB Filter
• Automatic Level Control on Front Panel, LED Indicator Shows Operation in ALC Region
• CW Sidetone Fed into Audio Amplifier when in CW Mode
• Sidetone Adjustable for Tone and Volume
• Automatic CW Offset of 750 Hz
• Press-To-Talk
• Meter Indicates SWR When Transmitting
• High Impedance Microphone Input
• RF Output Impedance 50 - 75 ohms, unbalanced.