1L20: Difference between revisions

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334 bytes added ,  22 September 2023
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{{BeginSpecs}}
{{BeginSpecs}}
{{Spec | Frequency range | 10 MHz to 4 GHz }}
{{Spec | Frequency range | 10 MHz to 4 GHz }}
{{Spec | Sensitivity | -110 to -90 dBm }}
{{Spec | Sensitivity | −110 to −90 dBm }}
{{Spec | Dispersion | 15 kHz to 60 MHz, magnifier usable to 2.5 kHz }}
{{Spec | Dispersion | 15 kHz to 60 MHz, magnifier usable to 2.5 kHz }}
{{Spec | Resolution bandwidth | 1 kHz to 100 kHz, variable }}
{{Spec | Resolution bandwidth | 1 kHz to 100 kHz, variable }}
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==Prices==
==Prices==
$1,995 (1965) equiv. to $15,200 in 2016
$1,995 in 1965 ($19,400 in 2023 dollars)
 
==Internals==
Originally (in SN 100-519), the UHF oscillator tubes V40 and V41 were type [[Y1506]] (Tek part #[[154-0499-00]]).
As the Y1506's became unavailable, a 1967 revision of the 1L20 changed these to [[Y1641]] (GE 16411?) tubes ([[154-0506-00]]), necessitating a slight modification of their DC filament supply circuit.


==Pictures==
==Pictures==

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