Programmable Audio Countermeasures Receiver
- this page is a stub
PACMR-1 was a fully programmable
Technical Surveillance and Countermeasures (TSCM)
receiver, developed in the late 1980s by
Mason Engineering Inc. in Fairfield (Connecticut, USA).
The system can be seen as the predecessor of the later
REI OSCOR range,
and was supplied in three or four large Haliburton shipping cases.
The system was mainly used by US law enforcement agencies.
This page is currently under construction whilst we are awaiting additional
information about the PACMR receiver.
The PACMR-1 was introduced in 1986 and was sold alongside the highly
With a price tag of US$ 80,000, compared to 'just'
US$ 21,000 for the MPR-5, the PACMR-1 was outside the reach of most
Eventually, only 50 units were ever produced and sold .
- Frequency range: 2 kHz - 10 GHz
- Digital tuning (PLL)
- Fully programmable (unlimited)
- Automatic and manual programs
- LCD and panorama display
- Subcarrier analysis
- 3200 channel memory
- Comparative spectrum logging
- 3½" floppy disc drive
- Outlets for printer and RS-232
Frequency range2 kHz - 10 GHz
Sensitivity3µV up to 1 GHz, 10µV at 1-10 GHz
RF attenuator0-60dB in 20dB steps
IF attenuator0-70dB in 10 dB steps
RF filters19 each, fixed, 6-pole to 1.6 GHz
MicrowaveYIG-tuned LO and RF at 1.6 - 10 GHz
Resolution10 Hz - 2 kHz (2 kHz - 1.6 GHz range)
IF bandwidth2, 7, 25, 90, 500, 1000, 5000 kHz, between 300 kHz and 10 GHz
RF demodulatorAM, FM, CW, NBFM, Subcarrier, Raster
Subcarrier 120-300 kHz
Subcarrier 22-10 kHz bandwidth: AM/FM 1st det., AM/FM/CW 2nd det.
AudioSubcarrier/RF (one at a time), speaker, phones
Scope5", dual trace, DC-20 MHz, under microprocessor control
Scope displayRF + SC frequency base, time base, raster (TV)
Floppy disc drive3.5"
Printer40 character, impact type, parallel
AntennasComplete set plus remote stand supplied
KeyboardPush-button keys with metalic and plastic membrane
RFI shieldingUndetectable at 3 meter distance
Portablility4 aluminium padded cases (5th case for printer)
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© Crypto Museum. Created: Sunday 25 October 2015. Last changed: Saturday, 11 November 2017 - 13:07 CET.