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Tektronix 1L30
10.5 GHz Spectrum Analyzer plug-in
1L30 front

Compatible with 500-series scopes

Produced from 1965 to 1971

(All manuals in PDF format unless noted otherwise)
Manuals – Specifications – Links – Pictures

The Tektronix 1L30 is a 10.5 GHz spectrum analyzer plug-in for 500-series scopes. It covers the frequency range from 1 GHz to 10.4 GHz.

The 1L30 was originally the third-party Pentrix L-30. The model number was changed some time after Tektronix took over Pentrix in 1964.

Key Specifications

Frequency range 925 MHz to 10.4 GHz
Sensitivity –105 to –75 dBm
Dispersion 15 kHz to 60 MHz, magnifier usable to 2.5 kHz
Resolution bandwidth 1 kHz to 100 kHz, variable
Display log, lin, square, video


  • 1965: $1,995 ($19,400 in 2023 dollars)



Some Parts Used in the 1L30