null
HP

HP 8551A Spectrum Analyzer RF Section 10 MHz-10 GHz 115/230V For Parts

(No reviews yet) Write a Review
SKU:
50027
MPN:
8551A
Condition:
Used
Availability:
This item requires freight shipment or local pickup due to its size and weight — please contact us to arrange shipping before ordering.
Weight:
155.00 LBS
Shipping:
Calculated at Checkout
  • HP 8551A Spectrum Analyzer RF Section front panel — three-quarter view showing analog meter, frequency and attenuator knobs on gray chassis
  • HP 8551A Spectrum Analyzer RF Section rear panel — showing fan, ventilation grille, and rear connector area with coaxial cables
  • HP 8551A Spectrum Analyzer RF Section full front panel view — showing FREQUENCY, SPECTRUM WIDTH, FREQUENCY TUNING, ATTENUATOR, SENSITIVITY, and SIGNAL IDENTIFIER controls
  • HP 8551A front panel close-up — upper section showing frequency scale dial, SPECTRUM WIDTH vernier, FREQUENCY TUNING coarse and fine controls, and HARMONIC NUMBER selector set to 6
  • HP 8551A front panel close-up — lower right section showing SIGNAL IDENTIFIER (Fs) dial, FINE POS BALANCE, COARSE POS BALANCE, and LINE switch (OFF/STANDBY/ON)
  • HP 8551A Spectrum Analyzer rear panel full view — fan, ventilation grille, coaxial rear connectors, fuse panel, and SWITCHED LINE OUTPUT visible
  • HP 8551A rear panel connector detail — LO OUTPUT (TERMINATE IN 50 OHM), 2GC IF INPUT, 2GC OUTPUT INPUT, and 200MC OUTPUT coaxial connectors with interconnecting cables
  • HP 8551A rear panel rating plate — SER. 502-00350, 115/230 VOLTS, 50 60 CYCLES, MADE IN U.S.A.
  • HP 8551A rear panel close-up — cooling fan with wire guard, SWITCHED LINE OUTPUT toggle, 0.5A SB and 3A SB fuse holders, and LINE INPUT connector
$300.00
Was: $1,600.00
Current Stock: 1

Sold Out

Description

HP 8551A Spectrum Analyzer RF Section 10 MHz-10 GHz 115/230V For Parts

The HP 8551A is a vintage spectrum analyzer RF section designed for direct RF measurement and analysis from 10 MHz to 10 GHz. This benchtop unit served as a modular RF front-end component in laboratory and test environments.

Specifications & What's Included

  • Frequency Range: 10 MHz–10 GHz direct coaxial input; 8.2–40 GHz with external waveguide mixers
  • Power Requirements: 115/230V, 50/60 Hz
  • Dimensions: 18.5" W × 16.75" D × 12.50" H
  • Front Panel Controls: Frequency, Spectrum Width, Attenuator, Sensitivity, Signal Identifier
  • Rear Panel: LO Output (50Ω), 2GC IF Input/Output, 200MC Output, Switched Line Output
  • Manufactured: 1960s, United States

Applications

The 8551A was used for RF spectrum analysis in telecommunications, microwave systems, and general laboratory testing. This RF section functioned as a front-end component in larger measurement systems, allowing technicians to analyze signal characteristics across the UHF and microwave bands. Compatible with HP modular test benches and external equipment requiring direct RF input analysis.

Condition: For Parts or Not Working
This HP 8551A Spectrum Analyzer RF Section is being sold AS-IS for parts or repair. When powered, the unit advances only to the STANDBY indicator — no fans spin and no additional lights or displays activate. The fault has not been diagnosed and the unit is not guaranteed functional in any capacity. Cosmetically, the chassis shows wear consistent with its vintage 1960s era: surface scuffing and oxidation on the aluminum panels, and general patina throughout. The front panel controls and knobs are present and intact. Rear panel coaxial connectors and cables are visible and appear complete. No power cord is included. Due to its substantial size and weight, this unit requires freight shipment or local pickup — please contact us prior to ordering to arrange shipping. Please view our photo set and contact us if you have any questions.
View AllClose

Warranty Information

We stand behind every item we sell with a 30-day money-back guarantee. If your item arrives not as described, you may return it within 30 days for a full refund. Please inspect your purchase upon arrival and contact us with any questions.
View AllClose

Additional Information

Brand:
Hewlett-Packard
Model:
8551A
MPN:
8551A
Type:
Spectrum Analyzer RF Section
SKU:
50027
Condition:
As-Is / For Parts or Not Working
Seller Notes:
Powers on to STANDBY only. No power cord included. Freight or local pickup required.
Country/Region of Manufacture:
United States
Form Factor:
Benchtop
Power Requirements:
115/230V, 50/60Hz
Frequency Range:
10 MHz to 10 GHz (direct coaxial input)
Extended Frequency Range:
8.2 to 40 GHz with external waveguide mixers
Input Type:
Direct single coaxial; external waveguide mixers
Measurement Type:
RF Spectrum Analysis
Front Panel Controls:
Frequency, Spectrum Width, Frequency Tuning, Attenuator, Sensitivity, Signal Identifier
Rear Panel Outputs:
LO Output (50 ohm), 2GC IF Input, 2GC Output (Input/Output), 200MC Output
Fuse Rating:
0.5A SB / 3A SB (visible on rear panel)
Switched Line Output:
Present on rear panel
Dimensions:
18.5" W x 16.75" D x 12.50" H
Era / Vintage:
1960s
Condition Notes:
This HP 8551A Spectrum Analyzer RF Section is being sold AS-IS for parts or repair. When powered, the unit advances only to the STANDBY indicator — no fans spin and no additional lights or displays activate.
View AllClose