[bars] Motorola R2001DHS

Juan Jiménez k1cpr at bd5.com
Tue Jun 10 10:24:34 CDT 2025


https://wiki.w9cr.net/index.php/Motorola_R2001D

On Sunday I drove down to PA to pick up a Motorola R2001DHS (an R2001D with
the high stability oscillator option).

*Wow.* This thing is the most complete piece of radio test equipment I have
ever been able to find (and afford), even if it was made in the 1980's. It
was worth the 14 hour drive there and back, and the reminder than all of
Central PA smells like manure this time of the year. It makes the Swiss
Army Knife look like something that came out of a box of Cracker Jacks.

   - Spectrum Analyzer
   - Duplex Generator
   - Modulation Oscilloscope
   - Frequency Counter
   - AC/DC Digital Voltmeter
   - RF Wattmeter/Signal-Level Meter
   - General Purpose Oscilloscope
   - Multimode Code Synthesizer
   - Distortion/SINAD Meter
   - Sweep Generator
   - DTMF Encode/Decode
   - Printer Port

I missed the auction for the one with the coffee maker option. 😆

Frequency range is 10 kHz to 999.9999 MHz with a resolution of 100 Hz.
Output in 50 ohms is 0.1 uV to 1 Vrms on FM and 0.1 uV to 0.4 Vrms on AM.

The monitor mode measures frequency from 1 MHz to 999.9999 MHz. The
auto-ranging CRT display has a resolution of 10 Hz for frequency error.
Input sensitivity is 1.5 uV for 10 dB EIA SINAD. The spectrum analyzer has
a 75 dBm dynamic range.

Anybody know anyone who works on calibrating these? The service manual is
straightforward (and hefty) but I don't have the additional equipment to do
the calibrations.

And no, this one is not going to Ukraine unless I find a sponsor with deep
pockets who wants to buy it for them. Too expensive for that, way out of my
meager charity budget...

73,
K1CPR
Juan
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