HP 8553B SPECTRUM ANALYZER RF SECTION
This is used with the 141T Display Section and the 8552B IF Section to make a Spectrum Analyser. It cost $3,150 in 1980. I have downloaded the Manual. The 8553B will operate over a bandwidth of 1kHz to 110MHz which covers the audio to FM broadcast bands. Options H01 & H02 were available for 75Ω input impedance.
For wide spectrum analysis, you can use a preset scan of 0 to 100 MHz. For more detailed study, the spectrum width can be progressively narrowed to 0.2 kHz, or the scanning capabilities can be eliminated altogether to use the instrument as a fixed
frequency receiver. A bandwidth of 300 kHz is automatically selected for preset scan operation; for variable scan and fixed frequency operation, narrower bandwidths can be selected.
The RF Input BNC connector has a maximum input level of +13dBm 20mW 1Vrms at 50Ω with ±50Vdc. The Probe Power is a 3 pin Plug and is used to power the HP 1121A Active Probe which is connected to the RF Input for high impedance circuit measurements.
Rear view showing P2 & P4 connectors
Top view with screen cover removed
Bottom view with screen cover removed
I bought this RF Section in a damaged condition. There was a fair bit of mechanical damage and it needed a complete stip down and extensive repairs. For details see Repair HP 8553B RF Section
Performance tests completed as far as possible.
Rechecked with basic Performance Tests.