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Orion II HF DSP Transceiver USED

34.00 LBS
Calculated at checkout

The best in Amateur Radio is now even better with ORION II. Featuring a color screen, all-new suite of roofing filters, new control processor and more. Highest performance HF transceiver available today, analog + IF-DSP, dual 32-bit ADI SHARC processors, lowest composite TX phase noise of any rig available — sounds fantastic on transmit and receive! Optimized amateur bands transceiver plus general coverage sub-receiver.

What is new about the ORION II?

Super bright, TFT color display with CCFL backlighting.

New 32-bit control processor using the latest generation Freescale DragonBall Super VZ chip. Provides faster front panel control response and accelerated remote operation via RS-232.

All-new firmware from the ground up. DSP code is refined, crafted and compacted to levels unimaginable even two years ago. Provides faster (stock) sweep with finer resolution, enhanced DSP automatic notch and DSP noise reduction.

All-new suite of ORION II-specific roofing filters is arranged in one, single bank to allow user to select the absolute ideal roofing filter for mode, band conditions, and personal preference. The narrow (600 and 300 Hz) filters are now located in the same initial bank with all the rest. This new arrangement yields subtle improvement in dynamic range and the new filters have less passband ripple than any we’ve ever offered. ORION II comes standard with 20, 6, 2.4, and 1 kHz installed. Optional filters are 1.8 kHz (model 2000), 600 Hz (model 2001), 300 Hz (model 2002). That’s not all – the optional filters cost less than before!

Mixing architecture for the analog stages has been rearranged to provide self-correction for frequency stability.

Digital mode operators will appreciate variable (programmable) line level output on rear panel completely independent of front panel controls.

ORION II now uses the popular 8 pin mic connector. This broadens the range of mikes and accessories readily available through the hobby for your use without finding or making adaptors.

The TEN-TEC Orion II represents an entirely new concept in high-performance HF transceivers. Our goal with this new groundbreaking design is to deliver the finest performance level to date from an amateur transceiver.

At the heart of the Orion II design is a pair of 32-bit floating-point ADI SHARC DSP processors. Using dual 32-bit devices provides much more processing “horsepower” than a transceiver using a single 32-bit DSP processor can provide. The result? Absolutely unparalleled HF receiver performance, filtering, and flexibility.

Full dual receive capability. An amateur-bands-only main receiver, (10 through 160 meters) utilizes both crystal and IF-DSP filtering. The sub receiver is IF-DSP and is general coverage from 500 kHz to 30 MHz. Both receivers can be used simultaneously on any frequency, with no compromise in performance. The two receivers can share a single antenna or each can be fed to a separate antenna. Receiver controls are available on both receivers. Bandwidth, AGC, PBT, Hi-Lo Cut, AF and RF Gain, attenuator, DSP NR and notch filtering are all selectable independently on each receiver.

Very high RX intercept points, superior dynamic range and an extremely low phase-noise synthesizer make the Orion II main receiver performance unmatched by any other HF transceiver.

590 receive IF-DSP bandwidth filters independently selectable on each of the main and sub receivers (100 Hz – 6000 Hz in 10 Hz steps). The main receiver also accomodates up to six crystal filters in the first I-F stage. Three of the six filters at 6.0, 2.4, and 1 kHz are standard. Optional filters for 1.8 kHz, 600 Hz, and 300 Hz can be added. These filters can be cascaded with any of the 590 selectable IF-DSP filters. The sub receiver has its own set of 590 filters that are selectable independent of the main receiver filtering. Rather than being limited to a single wide roofing filter at 15 or 20 kHz (compromising close-in receiver performance), ORION II selectable crystal filters narrow the roofing bandwidth to as little as 250 Hz to avoid any compromise of close-in receiver performance caused by loud nearby signals. No other transceiver does this.

Programmable AGC response time for both receivers.. Conventional AGC settings of OFF, FAST, MED, and SLOW are provided, but the new programmable mode is groundbreaking. Users may build their own personal AGC characteristic by selecting threshold, hang and decay rates. More than one million possible AGC combinations can be selected in programmable AGC mode. Favorite programmed AGC settings can also be saved and instantly recalled by the operator. Each receiver can have its own AGC settings selected regardless of where the other receivers AGC setting is placed.

True diversity reception using both receivers. Both receivers can be simultaneously fed to two separate antennas on the same frequency and controlled using a single VFO tuning knob. Superior low-band DXing capability using two separate receive antennas, on two receivers, and transmitting on a third TX antenna. Three antenna connections are provided: Two SO-239 connectors for transceive or receive antennas, a third via phono connector for RX-only use.

Continuous real-time spectrum display allows monitoring of band activity. Selectable sweep ranges allow user-definable limits to the amount of spectrum being monitored with ORION II main receiver.

Virtually indestructable 100-watt PA. Over-voltage protection, current protection for final transistors and thermal shutdown are built-in. Rated 100% duty cycle, 100 watts output, no time limit with added optional model 310 cooling fan.

Superb SSB audio is yours at a touch of the AUDIO button. Audio equalization is provided in both transmit and receive. The transmit response can be adjusted to have more bass or more treble. Separately, receiver audio can be EQed for bass and treble response. 18 selectable SSB transmit bandwidths to a maximum of 3.9 kHz are provided. See figures 3, 4, and 5 below for TX and RX equalizer graphs.

TEN-TEC’s Panoramic Stereo receive feature. Listening with stereo headphones, you can turn PS receive on and hear signals in stereo. As you tune across the band, signals move from one side through center to the other side in your headphones. Better than so-called “binaural” reception, this unique TEN-TEC feature can be used in SSB modes as well as CW. You’ve got to hear it to believe it! See below for downloads of example .WAV files.

Adjustable rise and decay times for transmitted CW waveform. User adjustable at the touch of a knob from 3 to 10 mS in 1 mS steps for “hard” or “soft” keying according to your taste.

Nine adaptive DSP noise reduction filters let you select the right amount of NR for elimination of broadband hiss, noise, etc., plus DSP automatic notch for auto filtering of interfering carriers in SSB modes. Manual notch filter is also provided with greater than 60 dB of cut and with adjustable width.

Dual noise blankers. Both a traditional-style analog and an IF-DSP noise blanker are provided for suppression of line and other pulse-type EMI.

Heavy duty internal automatic antenna tuner (optional). TEN-TEC’s internal auto tuner is no mere load trimmer – from 6 to 800 ohms may be matched (10:1 nominal SWR). Coax fed antennas only.

Voice keyer and CW memory keyer built-in. Program up to three voice messages and up to three CW messages for playback by pressing the SEND1, SEND2, and SEND3 buttons.

“60 METER READY”- the ORION II is ready to operate on the new 5 MHz allocation.

“Panic” on-the-fly reset button. Managed to get yourself confused by pushing buttons and turning knobs? Press and hold the RECALL button and the radio resets parameters to factory defaults without changing the mode or frequency of operation or having to turn off the transceiver.


Orion II Manual

Orion II Product Brochure

What's Included with the 566 Orion II

  • Owners Manual
  • 5 Pin DIN to Female RCA Phono Cable
  • Male Phono Plug
  • DB-9 Serial Cable
  • Torx & Hex Allen Wrenches
  • 8 Pin Microphone Connector
  • 25 Amp Spare Mini Fuse
  • Band Data Connector Shell with pins
  • DC Power Cable
  • Warranty Card


  • Frequency range: 500 kHz-30 MHz sub RX; 1.79-2.01, 3.49-4.07, 5.1-5.42, 6.89-7.43, 10.09-10.16, 13.99-15.01, 18.06-18.175, 20.99-21.46, 24.88-25.01, 27.99-29.71 MHz TX and main RX.
  • Tuning Step Size: Selectable 1, 10, 100, 1k, 10k and 100 kHz
  • Frequency stability: +/- 1 ppm. TCXO equipped.
  • Antenna impedance: 50 ohms nominal.
  • Antenna connectors: 2x SO-239; 1xRCA female.
  • Modes: USB, LSB, AM, FM, CWUSB, CWLSB, AFSK; advanced Panoramic Stereo(tm).
  • IFs: IF1=9 MHz, IF2=455 kHz, IF3=14.0 kHz main; IF1=45 MHz, IF2=450 kHz, IF3=14.0 kHz sub.
  • Display: 320x240 TFT color screen with CCFL backlighting. Adjustable brightness. User selectability of several color screen layouts plus white/black, black/white "monochrome" modes.
  • VFOs: Receivers operate on any two bands simultaneously; either VFO may be assigned to transmitter using the A/B system.
  • Supply voltage: 13.8 Vdc nominal; reverse-polarity and over-voltage protection standard.
  • Operating temperature range: 0-50 degrees C
  • Dimensions (HxWxD): 5.25" x 17.0" x 18.75" (13.3 x 43.2 x 47.6 cm)
  • Weight: approx 20 lbs. (9.2 kg)
  • Construction: Al chassis, steel cabinet, glass-epoxy printed-circuit boards.
  • PC control port: EIA-232 standard, DE-9F.
  • Digital AGC system: Programmable AGC threshold; programmable hold and decay times, fixed attack. Independently selectable on each receiver.
  • RX audio equalizer: In addition to passband tuning, bass/treble boost/cut up to 6 dB/octave.
  • RX audio output power: 2 W into 4 ohms, < 3% THD. (see figure 8 below).
  • RX headphone output: Designed for 16-32 ohms headphone impedance.
  • Line-level output: 0 dBm into 600 ohms.
  • RX notch filter: IF DSP, adjustable width, depth> 50 dB, notch reflected on S-meter; multi-tone auto-notch, adjustable 0-9.
  • RX noise reduction: IF DSP, adjustable 0-9.
  • SSB sensitivity: <0.18 uV for 10 dB SINAD at 2.4 kHz BW, pre-amp on typical; <0.5 uV for 10 dB SINAD at 2.4 kHz BW, pre-amp off typical.
  • AM sensitivity: <1.50 uV for 10 dB SINAD at 6.0 kHz BW, 30% modulation, 1 kHz, pre-amp off.
  • FM sensitivity: <2.50 uV for 12 dB SINAD at 15 kHz BW, 3-kHz deviation, 1 kHz, pre-amp off.
  • Selectivity: 590 built-in DSP filters from 100-6000 Hz, SSB, CW; 4 & 6 kHz AM, 15 kHz FM (-3 dB points, typical). Four 9-MHz-IF crystal filters standard, 15 kHz, 6 kHz, 2.4 kHz, 1.0 kHz; three others optional, 1.8 kHz, 600 Hz and 300 Hz.
  • IP3: +25 dBm typical, 20-kHz spacing at BW=2.4 kHz, pre-amp off; +24 dBm typical, 5-kHz spacing, BW=500 Hz, pre-amp off. (see Figure 1 below).
  • IMD3 dynamic range: 101 dB typical, pre-amp off, 20-kHz and 5-kHz spacing.
  • IP2: +75 dBm typical.
  • LO phase noise: -136 dBc/Hz typical from 0.5-20 kHz. (see Figure 2 below)
  • Image rejection:>70 dB.
  • IF rejection:>70 dB.
  • Other spurious response rejection:>90 dB, dF>1 MHz.
  • Internal birdies: None stronger than specified sensitivity.
  • Current drain: 2 A typical, audio reduced.
  • RIT range: +/- 10 kHz.
  • S-meter: S-9=50 uV.
  • Recovery time: < 20 ms
  • Noise blankers: Hardware, on/off and software, adjustable 0-9; operate together or separately.
  • Sensitivity: 0.35 uV typical for 10 dB SINAD at 2.4 kHz BW, SSB mode.
  • Selectivity: 590 filters built in from 100-6000 Hz, SSB, CW; 4&6 kHz AM; 15 kHz FM (-3 dB points, typical).
  • IP3: +5 dBm typical, 20-kHz spacing.
  • IP2: +71 dBm typical.
  • Image rejection:> 70 dB.
  • IF rejection:> 70 dB.
  • S-meter: S-9=50 uV
  • Recovery time: < 20 ms.
  • Noise blanker: Software, adjustable 0-9.
  • Power output: Adjustable 5-100 W, +/- 1 dB, ALC controlled.
  • Duty cycle: 100% intermittent service; continuous with user-supplied cooling fan.
  • Microphone input impedance:>10 kohms at 1 kHz.
  • Microphone sensitivity: 5 mV for full power output; internal gain adjustment; dc available for electrets.
  • Speech processor: RF compression 0-9.
  • Line-level input: -6 dBm into 600 ohms for full output.
  • TX bandwidth: 100-3900 Hz in 10-Hz steps.
  • TX frequency response: 50-3900 Hz max -6 dB points, adjustable.
  • TX equalizer: Up to 6 dB/octave bass/treble boost/cut.
  • TX speech monitor: Audio taken after filtering, processing.
  • SSB carrier suppression:> 50 dB.
  • Unwanted sideband suppression:> 60 dB at 1 kHz.
  • Harmonic and spurious outputs:> 50 dB below 100 W;> 40 dB below 5 W..


New and demo TEN-TEC,INC. equipment purchased directly from TEN-TEC,INC. in the U.S. is warrantied parts and labor for 12 months from date of purchase. Purchaser pays inbound shipping to us for warranty repair, we pay shipping to return the repaired equipment to you by UPS ground service or equivalent to the continental USA and Canada. Alaska, Hawaii and outside U.S. and Canada actual return shipping cost paid by owner. The only warranty exception is for the model 238B antenna tuner and the 417A Titan III linear amplifier, which are warrantied for three years parts and labor, under these same terms. Used equipment sold by TEN-TEC,INC. is warrantied for 30 days, parts and labor, under these same terms.

Click Here For All Warranty Information

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Product Reviews

  1. I love my ORION II and you will too.

    Posted by John/KC2QMA Nashville TN on 14th Jan 2013

    I have owned a few other transceivers from the other big names in ham radio but the Ten Tec Orion II is hands down the best transceiver I have ever owned.

    I have owned this rig for over a year now and use it almost every day and it still amazes me. It is the quietest receiver I have ever experienced. I mostly use it for SSB and AM and it does great on AM! But CW is where it really shows its power, you can pull the weakest signal out of the most challenging band conditions.

    The Orion II is a true “Operators” transceiver; once you understand how to use the AGC, DSP and other features of the Orion II you see what sets this rig apart from any other transceiver on the market.

    And finally, you will not find any other Armature radio equipment maker anywhere on the planet who offers better customer service. And what’s more it’s MADE IN USA!

    Give the Orion II a try you won’t be disappointed.

  2. Beaming ear to ear!

    Posted by John K7FD on 1st May 2012

    2012 marks my 45th year in Ham Radio; many of those found me with a Ten Tec rig in the shack! Argonaut 5, Triton IV 544, RX340, Omni 6+, Argonaut V...and now the Orion II. A birthday gift from the xyl no less! I am very pleased...again...with Ten Tec & this new transceiver! The Orion II steps up to the plate and drives in a home run with the bases loaded...

    I sit and operate my radios A LOT; Ten Tec gear, and the Orion II in particular, does not wear you down with listener fatigue. The receiver has that 'X' factor...easy on the ears for long periods of time. It's apparent someone who spends time in front of a rig designed the Orion II!

    Made in the USA. That means something, too. When I've got a high quality radio like this available, why not keep my dollars at home? And when I have a question, Ten Tec hams answer the phone...

    I'll end this review with a true story, my first week with the rig. I'm on the air during a contest, my wife looking on. Contacts are rapid fire...but after giving out a report, the other guy stops in his tracks and says
    "GREAT AUDIO -- WHAT RIG ARE YOU USING??" My xyl heard him and exclaimed 'Now that's the
    best birthday present you could have ever gotten!'

    Indeed I was beaming ear to ear!

    73 John K7FD

  3. "Oh Boy" Have I been missing out!

    Posted by Peter Rogers ve3etr on 17th Apr 2012

    I have been a ham for 18 years. Now I have just purchased a Ten Tec Orion II which is loaded. It also has the colored screen which is so enjoyable to see and read from my armchair with remote in hand. I heard about ten-tec radios but never thought to much about reading up about them. "Oh Boy" Have I been missing out. What a rig, Thanks Ten-Tec for making my time on the band so enjoyable.

  4. Best in 43 years of hamming

    Posted by Bernie Skoch on 18th Nov 2011

    I have been a ham for 43 years. I have owned a lot of equipment. As a professional communications consultant, I have seen a lot of systems (and equipment).

    This is the finest radio I have ever owned. And Ten Tec's support is second to no one.

  5. The Best gets even better!!!

    Posted by Kirby, K7EC on 6th Oct 2011

    I own 2 loaded Orion II tranceivers and LOVE them because they have EXCELLENT main receivers!! Ten Tec just announced that they are going to offer a General Coverage sub receiver that is as good or better than the main receiver for the Orion and Orion II model radios!!To support a product that is as mature as this one with an entirely NEW sub receiver is extraordinary!! The original Orion is over 8 years old! Great show by the senior Ten Tec management and employees of Ten Tec!!! Totally amazing!!

  6. The best that $$$ can buy! A GREAT U.S.A. MADE PRODUCT!!!!

    Posted by Unknown on 28th Sep 2011

    What can I say. Ten-Tec makes the best radios in the USA and this is the BEST OF THE BEST!

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