R-300

Name: Kenwood R-300 receiver
Brand: Kenwood
SKU: R-300
Price: 116.00 USD
Availability: OnlineOnly

Specifications

Prices

Communication receiver covering 170-410 kHz and 0.525-30 MHz to provide reception of all broadcast and amateur radio stations in LW, MW and SW bands. The Trio Kenwood R-300 is provided with a main dial and a band spread dial, frequencies of 10 Short Wave broadcast bands or 5 Amateur bands are magnified for easy and accurate readouts. The receiver is also provided with its own built-in 500 kHz crystal oscillator marker for frequency calibration. Features: AM, SSB and CW reception. ANL (Automatic Noise Limiter). Double conversion circuit for F band (18-30 MHz) and single conversion for lower bands (0.17-18 MHz). Wide / Narrow IF filter switch. Normal / Soft audio tone switch. Dual-gate MOSFET in RF and Mixer circuits for high sensitivity and cross-modulation rejection. RF-gain and Antenna trimmer controls. Three-way power system, AC / DC source / internal batteries. Ideated in Japan, year of introduction 1976.

Reference market : amateur-radio

R-300 specifications

General

Frequency coverage
Main dial	0.1700 ~ 0.4100 MHz (Band A) 0.5250 ~ 1.2500 MHz (Band B) 1.2500 ~ 3.0000 MHz (Band C) 3.0000 ~ 7.5000 MHz (Band D) 7.5000 ~ 18.0000 MHz (Band E) 18.0000 ~ 30.0000 MHz (Band F)
Band spread (Ham bands) [1]	3.5000 ~ 4.0000 MHz (80m) 7.0000 ~ 7.5000 MHz (40m) 14.0000 ~ 14.6000 MHz (20m) 21.0000 ~ 21.5000 MHz (15m) 28.0000 ~ 30.0000 MHz (10m)
Band spread (BC bands) [1]	3.8200 ~ 4.0000 MHz (75m) 4.7500 ~ 5.1000 MHz (60m) 5.9000 ~ 6.2000 MHz (49m) 7.0000 ~ 7.5000 MHz (41m) 9.4000 ~ 9.8000 MHz (31m) 11.7000 ~ 12.0000 MHz (25m) 15.0000 ~ 15.5000 MHz (19m) 17.6000 ~ 18.0000 MHz (16m) 21.4000 ~ 21.8000 MHz (13m) 25.6000 ~ 26.2000 MHz (11m)
Mode
CW / LSB / USB / AM

Receiver

Sensitivity
SSB [2]	<0.3 uV (280 kHz, band A) <0.3 uV (900 kHz, band B) <0.3 uV (2 MHz, band C) <0.5 uV (5 MHz, band D) <0.5 uV (12 MHz, band E) <0.3 uV (24 MHz, band F)
AM [2]	<1.0 uV (280 kHz, band A) <1.0 uV (900 kHz, band B) <1.0 uV (2 MHz, band C) <1.5 uV (5 MHz, band D) <1.5 uV (12 MHz, band E) <1.0 uV (24 MHz, band F)
Selectivity
Wide	>5.0 kHz (-6dB) <17 kHz (-60dB)
Narrow	>2.5 kHz (-6dB) <12 kHz (-60dB)
Image rejection
>65 dB (280 kHz, band A) >50 dB (900 kHz, band B) >45 dB (2 MHz, band C) >40 dB (5 MHz, band D) >25 dB (12 MHz, band E) >40 dB (24 MHz, band F)
IF rejection
>50 dB (280 kHz, band A) >60 dB (900 kHz, band B) >70 dB (2 MHz, band C) >70 dB (5 MHz, band D) >70 dB (12 MHz, band E) >70 dB (24 MHz, band F)
BFO range
±3 kHz
ANL (Automatic Noise Limiter)
Yes
IF (Intermediate Frequency)
1°	455 kHz (Band A, B, C, D, E) 4.035 MHz (Band F)
2°	455 kHz (Band F)

Features

Antenna
SO239 50~75Ω Screw terminals 50~75Ω
Power supply
100/117 220/240 VAC 12~16 VDC external source (13.8V nominal) 12 VDC batteries (8 x UM1)
Power consumption
8W (VAC) 4.1W (13.8 VDC) 6.9W (13.8 VDC, light On)
Audio power
1.5 W on 8Ω
Audio output
Jack 6.35 mm (headphone)
Connections
Jack 3.5 mm (4~8Ω Speaker) Jack 2.5 mm (REC) Socket (Remote)

Mechanical and environmental data

Dimensions
362 (W) x 163 (H) x 322 (D) mm
Weight
7.6 kg

Broadcast or Amateur band depending on the sales destination area.
10dB S+N/N ratio at 50 mW output on 8Ω.

R-300 band spread :

Trio Kenwood R-300 band spread dial: broadcast bands version

Trio Kenwood R-300 band spread dial: amateur radio bands version

R-300 block diagram :

Trio Kenwood R-300 block diagram

R-300 price

We have collected for your convenience the Trio Kenwood R300 sale price (US Dollar) and its trend over time. Useful to guarantee a cheaper purchase of this radio and to put it for sale in the second-hand market. Of course offers, accessories, warranty terms and conditions can lead to different figures.

Price	Date	Condition
USD 118.00 (110EUR)	2022-jan	Second Hand Functions are fine on all bands. It showing some signs of wear

R-300 review

Charles

March-29 2022

Nice interesting radio. Very nice to own and operate.

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