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  • Wide Range Communications Receiver featuring

digital USB I-Q Output, EZ-Vue Amber Display,

Internal Li-Ion Rechargeable Battery, standard

mini-USB Interface Cable, 2.1mm plug unterminated

power cable, Printed User's Manual.

General Specifications:

Frequency Coverage and Modes:

MW-HF: General Coverage: 500 kHz - 30.000 MHz

•	User Configurable Band Key:
o	Amateur Band Selections:		160 m – 10 m
o	International Broadcast Bands: 	120 m – 11 m
•	AM-SSB-CW  manual or auto-mode selection (based on tuned frequency)
•	International Broadcasting: manual or auto-selection: 5 kHz steps
•	Automatic -Filter Width select with  override (manual selection)
•	Tuning Resolution (cursor control): 1 MHz  / 100 -10 - 1 kHz  / 100  - 10 Hz
•	MDS (minimum discernible signal):  nominal -130 dBm in 500 Hz Bandwidth
•	LW: 150 - 500 kHz is included for experimental purposes.  See Hardware Limitations below.


VHF-UHF General Frequency Coverage and Performance:

•	VHF: Continuous Coverage:   64.0 - 260.0 MHz
•	UHF: Continuous Coverage: 437.0 - 512.0 MHz
•	FM Broadcast: nominal -88 dBm in 200 kHz bandwidth
•	VHF Sensitivity  108.0 - 150.0 MHz: nominal - 98 dBm (or better) for 12 dB SINAD, 15 kHz filter bandwidth (5 kHz deviation)
•	UHF Sensitivity: nominal -86  to-98 dBm for 12 dB SINAD, 15 kHz filter bandwidth (5 kHz deviation)
•	Standard frequency steps for each band

VHF-UHF Band Plan:

•	FM Broadcast: 87.7 - 107.9 - Monaural - 5 kHz audio bandwidth (76.0 MHz International)
•	Aircraft Bands: 108.000 - 136.975 MHz, AM auto-select -25 kHz channel steps
•	Amateur: 2 m, 1.25 m, 70 cm (upper portion starting @ 437.0 MHz). 
•	NBFM mode default with SSB-CW mode selects.
•	Marine & NOAA Weather Radio
•	Public Service: 137.0 - 225.0: 12.5 and 25 kHz steps.
•	FRS-GMRS 462 – 467 MHz ,  25 kHz Steps
•	General Coverage 467-512 MHz
•	Note: 6 m (54 MHz) is not available.






Receiver Architecture:

•	HF: Dual conversion (VHF-UHF: single conversion) with low -IF , I-Q digital sampling, 32-bit DSP with digital audio CODEC
•	DSP demodulation algorithms: DSB-AM, SSB, CW, WBFM, NBFM
•	User Selectable, DSP fixed bandwidth channel filtering selections

Audio System - Digital CODEC

•	Speaker Driver: 0.8 W into 8 Ohm load
•	Internal 2.5” diameter, mylar-cone communications grade speaker
•	External monaural speaker jack (3.5 mm stereo jack - back panel)
•	Headset Driver: 40 mW into 16 Ohms. (3.5 mm stereo jack - front panel).

Antenna Inputs

•	LW-MW-HF Port: 1000 Ohm – 3.5 mm jack – Retained S/N’s 601-749.  Eliminated starting with S/N 750.
•	LW-MW-HF Port: 50 Ohm – BNC (female)
•	VHF-UHF Port:    50 Ohm – BNC (female)

Display
•	1.5" diagonal - 64 x 128 OLED Display with EMI-filtered lens
•	Readable outdoors (not in direct sunlight) and manually dimmable

Power Supplies

•	Power Jacks: Powered-USB and 6-18 VDC (2.1mm diameter-center pin (+) x 5 mm diameter barrel)
•	Internal Lithium-Ion rechargeable battery 6-8 hour capacity with full speaker volume. 10-12 hours for headset and normal speaker volume.
•	Both supply inputs automatically charge the optional internal battery with the CR-1a powered on and OFF.

Power Consumption

•	< 1.0 Watt Headset and normal speaker volume
•	< 1.2 Watt maximum - full speaker volume








USB Mini-B 2.0 Jack

•	Automatically charges internal battery while maintaining maximum USB power use < 2.5 Watts
•	Software updates via 'Dropbox' with automated email notifications.
•	I-Q data and radio controls vi
o	CommRadio supplied basic 200 kHz Spectrum-Scope PC GUI (graphical-user-interface).
o	Third party software GUIs (graphical-user-interface)


Mechanical:

•	Overall Size: 5.65” W x 2.45” H x 6.10” D (including knobs, jacks , feet)
•	Weight: 1 lb. – 8 oz.
•	Knobs: Machined Aluminum – Black Anodized
•	Front Panel: Machined Aluminum – Powder Coated – Black Crackle.
•	Case: 20 Gauge Steel, Powder Coated – Black Crackle.

ESD Protection:  ESD Diodes: Antenna ports - Power Jacks - USB Port-Keys – Knobs

Hardware Design Limitations:

•	The CR-1a is not controllable over USB.
•	Analog or digital IQ or IF signals are not ported to any connector at this time.
•	LW (150 kHz - 480 kHz): The CR-1a was designed to tune down to 500 kHz.  The tuner is programmed to provide tuning to 150 kHz. However, there is no dedicated pre-selector in this range.  The IF is also in this range and signals from other bands can be heard. The CR-1a performance is not guaranteed in this range and is provided for experimental purposes. Good performance has been reported from one CR-1a owner who uses an external LW pre-selector.

Regulatory Compliance:

•	FCC Mark  Declaration of Conformity - Part 15
•	CE Mark (Europe-elsewhere)
•	RoHS: No PB

Origin & Warranty & Satisfaction Guarantee:

•	Designed and manufactured in USA
•	Limited 1 year warranty:  parts – labor – workmanship
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CR-1a Communications Receiver

$549.99
Rating:

Product Information

Wide Range Communications Receiver featuring

digital USB I-Q Output, EZ-Vue Amber Display,

Internal Li-Ion Rechargeable Battery, standard

mini-USB Interface Cable, 2.1mm plug unterminated

power cable, Printed User's Manual.

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Product Reviews

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  1. Caling All Radionutz Commradio's CR-1a is for you.. everything u need at youre finger tips, dx, swl, listen, monitor .. 5 Star Review

    Posted by on 9th May 2014

    I have only begun to really use my baby machine ... I love the idea that I can at my finger tips..tune in on all bands .. Although I mainly DX, and listen, for tropos , and other low powered catches , for programming .....here in Rockies when
    Conditions are good... I can pick up for example Japanese shortwave broadcasts ..
    Thanks to the CR-1a's selective array of choices ... First in USB .. With 2.2 then finally opening up with 7.5 in am ...
    Thanks Commradio!


  2. The best SWL radio ever! 5 Star Review

    Posted by on 28th Apr 2014

    All I can say is WOW. The CR-1a is the best shortwave radio I have ever used. Its size, ease of use and performance is superior. I have heard more from this little radio in the last few days of use than years of performance with radios twice it's size and cost. I look forward to spending time with my new best friend.





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