====== Pegasus Model 550 ======
{{pegasus.jpg?110|}}{{pegasus1.jpg?75|Front}}{{pegfpc.jpg?65|Front Close-up}}{{pegback.jpg?65|Rear}}{{pegback1.jpg?115|Rear Close-up}}{{pegside.jpg?115|Side}}{{pegside1.jpg?115|Side}}

===== Description =====
PC controlled IF-DSP transceiver covering all 9 HF ham bands plus general coveral receive.  100 watts output at 100% duty cycle.

===== Reviews =====

  *[[http://www.eham.net/reviews/detail/165|eHam.net]]
  *[[http://www.arrl.org/members-only/prodrev/pdf/pr0002.pdf|ARRL]](Must be ARRL member & logged in to view.)
  *[[http://www.arrl.org/members-only/prodrev/pdf/lab/tt550.pdf|ARRL Expanded Report]](Must be ARRL member & logged in to view.)


===== Mods, Fixes, and Additional Info =====
  *[[550vol|Volume & RF Gain Adjustment Mod]]
  *{{550_audio_io.pdf|Model 550 Audio IO Diagram by 4Z5UN}}
  *{{550_bbtrx.pdf|Model 550 BBTRX Diagram by 4Z5UN}}
  *{{550_low_pass_filter.pdf|Model 550 Low Pass Filter Diagram by 4Z5UN}}
  *{{550_power_control.pdf|Model 550 Power Control Diagram by 4Z5UN}}


===== Related Links =====

  *[[https://tentecwiki.eqth.net/webarchive/550|Archived Ten-Tec Web Page]]
  *[[http://www.n4py.com/|N4PY Rig Control Software]]
  *[[http://groups.yahoo.com/group/TenTec_Pegasus/|Pegasus Yahoo Group]]
  *[[pt-11p|Optional Automatic Antenna Tuner]]
  *[[http://www.callsignsoftware.com/ |Callsign Software]] - Support for this package can be found [[http://groups.yahoo.com/group/CallSignSoftware-Support/ |here]]
  *[[http://www.dogparksoftware.com/MacLoggerDX.html| MacLoggerDX]] - Support for this package can be found [[http://two.pairlist.net/mailman/listinfo/dogparklist| here]] and [[http://groups.yahoo.com/group/macloggerdx/ |here]]

===== Sales Information =====
{{550_08_99.jpg?100|}}

===== Specifications =====

==== General ====
  ***MODES:** LSB, USB, CW, RTTY (AFSK), FM, AM receive only
  ***FREQUENCY RANGE:** Receive - 100 kHz to 30 MHz. Transmit - all ham bands 160-10 meters
  ***DISPLAY:** provided by customer's PC
  ***DUAL VFOs** with SPLIT mode.
  ***OFFSET TUNING:** +/- 10 kHz receive and transmit
  ***MEMORIES:** limited only by available RAM in PC, virtually any PC will store 1000s of memories
  ***FREQUENCY ACCURACY:** +/-90 Hz at 25 degrees C at 30 MHz for 1 yr
  ***ANTENNA:** 50 ohms unbalanced.
  ***POWER REQUIRED:** 1A receive, 20A transmit @ 12-14 VDC
  ***CONSTRUCTION:** 5 epoxy glass PC boards, molded front panel, aluminum chassis, texture painted steel cover
  ***DIMENSIONS:** HWD 10.75" x 5.125" x 11.5" / 27.3 x 13 x 29.2 cm
  ***WEIGHT:** 9 lbs - 4.1 kg

==== Transmitter ====
  ***RF OUTPUT:** 5-100 watts, ALC stabilized.
  ***DC INPUT:** maximum 250 watts @ 14 VDC. 100% duty cycle for up to 20 minutes. Continuous duty with customer supplied air cooling of rear panel heat sink.
  ***MICROPHONE INPUT:** 200 to 50K ohms. 4 pin, front panel connector accepts microphones with 5 mv (-67 dB) output. Polarizing voltage provided for electrets.
  ***T/R SWITCHING:** PTT or VOX on SSB, QSK on CW.
  ***CW OFFSET:** Programmable 400 to 900 Hz, DSP generated. Sidetone automatically matches offset, volume adjustable independent of AF GAIN control.
  ***FM DEVIATION:** +/- 5 kHz.
  ***METERING:** Switchable to forward power, reflected power or SWR.
  ***SSB GENERATION:** DSP generated
  ***CARRIER SUPPRESSION:** > 50 dB
  ***UNWANTED SIDEBAND SUPPRESSION:** > 60 dB at 1.5 kHz tone
  ***THIRD ORDER INTERMOD:** 25 dB below two tone @ 100 watts PEP
  ***SPURIOUS OUTPUT:** Better than 40 dB below peak power output 

==== Receiver ====
  ***SENSITIVITY:** .35uV typical for 10 dB S+N/N @ 3 kHz bandwidth, SSB mode.
  ***SELECTIVITY:** 34 filters built-in; 300 Hz, 330 Hz, 375-750 Hz in 75 Hz increments, 900-3000 Hz in 150 Hz increments, 3.3-6.0 kHz in 300 Hz increments, 8.0 kHz. All 1.5:1 shape factor or better.
  ***DYNAMIC RANGE:** 90 dB @ 3 kHz bandwidth at 50 kHz spacing
  ***THIRD ORDER INTERCEPT:** +10 dBm
  ***NOISE FLOOR:** -126 dBm @ 3 kHz bandwidth
  ***S-METER:** Calibrated to 50 uv at S9
  ***ATTENUATOR:** -20 dB
  ***PASSBAND TUNING:** +/- 2 kHz
  ***I-F FREQUENCIES:** 1st I-F 45 MHz, 2nd I-F 455 kHz, 3rd I-F 12 kHz
  ***I-F REJECTION:** > 60 dB typical
  ***IMAGE REJECTION:** > 60 dB typical
  ***RECEIVE RECOVERY TIME:** less than 20ms, including split mode
  ***AUDIO:** speaker - 2 watt @ 4 ohms, line out - > 1 V p-p into 600 ohms