160m – 6m
Bands
100 W
Output
2010
Introduced
FrequencyTX: 160-10m + WARC + 6m (ham bands), RX: 0.5-30 MHz + 50-54 MHz (general coverage)
Bands160m, 80m, 40m, 30m, 20m, 17m, 15m, 12m, 10m, 6m
TX power100 W (5-100W SSB/CW/FM adjustable. 20A TX typical.)
ModesUSB, LSB, CW, AM, FM
Weight5.4 kg (11.9 lb) - ~5.4 kg estimated. Compact, mobile-friendly form factor.
ConnectorSO-239
Year2010
Connectors
antennaSO-239
micmicrophone connector
keykey/paddle
auxAUX level input (200mV nominal)
accLINE OUT, PTT, AMP KEY LINE, GROUND
ext spkrexternal speaker
dc inDC 13.8V 20A
power reqDC 13.8V 20A TX.

Estimated (unverified): Weight ~5.4 kg (about 12 lb) is approximate. Introduced about 2010 (QST review May 2011).

compact HF + 6m transceiver, 160-6m, 5-100 W adjustable; SSB/CW/AM/FM double-conversion analog front end (1st IF 9.0015 MHz, 2nd 22.5 kHz) into IF DSP (zero-IF third conversion in the DSP) crystal ladder roofing filters in the first IF (filtering ahead of the DSP) optional roofing filters 300 Hz / 600 Hz / 1.8 kHz / 6 kHz (2.4 kHz standard) DSP noise reduction, auto-notch, passband tuning, adjustable AGC simplified three-knob control concept; user-selectable color LCD 100 memories, dual VFOs with split; 1 Hz tuning; internal Curtis Mode B keyer (5-60 WPM) RIT and variable CW offset; CTCSS for 6m FM repeaters general-coverage receiver 0.5-30 MHz + 50-54 MHz 599AT adds an internal auto antenna tuner (160-10m, not 6m); optional Model 320 noise blanker made in Sevierville, Tennessee; discontinued (Ten-Tec was sold in 2015 and production wound down)
Strengths

A compact, US-made HF and 6-meter transceiver with a proper filtering architecture: crystal ladder roofing filters ahead of the IF DSP, rather than DSP alone. It offers 5-100 watts on SSB, CW, AM and FM, a clean three-knob control layout, a user-selectable color display, 1 Hz tuning, an internal Curtis keyer, and a general-coverage receiver. The 599AT adds an internal antenna tuner, and an optional noise-blanker module is available.

Weaknesses

It is discontinued, with service availability uncertain since Ten-Tec's assets changed hands in 2015-2016. There is no spectrum scope, waterfall, touchscreen or USB audio interface, and the antenna tuner and noise blanker are optional extras. At current used prices it competes with newer SDR transceivers that offer waterfalls and more built-in features.

Verdict

The Eagle was one of Ten-Tec's last new HF transceiver designs - a compact, mobile-friendly radio built around crystal ladder roofing filters feeding IF DSP, with a clean three-knob interface and the kind of quiet receiver Ten-Tec was known for. Its 1 Hz tuning and internal Curtis keyer reflect the company's CW heritage. It carries Ten-Tec's American build quality, though service support is less certain since the company changed hands.

The Ten-Tec Eagle (Model 599) is a compact, mobile-friendly HF and 6-meter transceiver built around an IF digital signal processing receiver with a low first IF and roofing-filter architecture, the design approach that gives strong close-in dynamic range. It covers 160 through 6 meters with output continuously adjustable from about 5 to 100 watts, and operates SSB, CW, AM, and FM.

The Eagle was designed around simplicity: a clean three-knob control concept meant to keep the most-used adjustments immediately at hand rather than buried in menus, paired with the kind of clean receiver Ten-Tec was known for. The 599AT version added a built-in automatic antenna tuner. Made in the United States during the later years of Ten-Tec's amateur production, it became a well-regarded performer for operators who valued receiver quality and uncomplicated operation in a small package.

It is a discontinued model. Compare it with the Jupiter and the flagship Orion II.