Radiocomm cr-1a multiband communications receiver
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Radiocomm cr-1a multiband communications receiver

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(£524.96 exc. VAT)
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Product code: CR-1A
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Radiocomm cr-1a multiband communications receiver

Radiocomm cr-1a multiband communications receiver

Frequency Coverage and Modes:

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

User Configurable Band Key:

Amateur Band Selections: 160 m – 10 m

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)


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 radio powered ON or 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.

CR-1a Only: I-Q data and radio controls via USB port

CR-1a Only: CommRadio supplied basic 200 kHz Spectrum-Scope PC GUI (Graphical User Interface)


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 on: Antenna port(s), Power Jacks, USB Port, Keys, and Knobs

Hardware Design Limitations:

CR-1 only: The CR-1 is not controllable over USB.

CR-1 only: Analog or digital IQ or IF signals are not ported to any connector.

LW (150 kHz - 480 kHz): 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. Performance is not guaranteed in this range and is provided for experimental purposes. Good performance has been reported from one CR-1 owner who uses an external LW pre-selector.

Regulatory Compliance:

FCC Mark Declaration of Conformity - Part 15

CE Mark (Europe-elsewhere)

RoHS: No Pb (lead)

Origin & Warranty & Satisfaction Guarantee:

Designed and manufactured in USA

Limited 1 year warranty: parts, labor, workmanship

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