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Desktop HF/VHF Receiver
Desktop Shortwave receiver
Submersible Marine Transceiver

General

HAM bands 160m  80m  60m  40m  30m (WARC)  20m  17m (WARC)  15m  12m (WARC)  11m (CB)  10m  ? ?
Freq. stability ± 50Hz per hour after 1 hour. ? ?
Tuning steps Continuous Continuous ?

Receiver

RX-range 0.1-29.9999 MHz 15,5-26,6 / 23,5-41 / 37,5-65 / 64-115 meter
110-175 / 170-300 / 290 - 570 meter optional
156.025 - 163.275 MHz
Modulations AM   CW   USB   LSB   RTTY   AM   FM  
Sensitivity 0.5 µV 1.6-30 MHz SSB/CW S+N/N=10dB ? ?
Selectivity 2.4 / 6 kHz
0.6 kHz optional
? ?
Filters ? ? ?
Receiver system Double conversion superheterodyne TRF with regeneration ?
IF-freqs. 1st: 70.455 MHz
2nd: 455 kHz
? ?
Image rejection > 70 dB (1.6 - 30 MHz) ? ?
Audio output 1 W @ 4 Ohms, requires external speaker ? ?

Transmitter

TX-range - - 156.025 - 163.275 MHz
Modulations - - FM  
RF-output ? ? 5 / 1 W

Connections

Antenna SO-239 - -
Impedance 50/75Ω 50Ω 50Ω
Other - - -

Electrical

Power req. Mains 6 + 45 + 135 + 180 V 12 V DC - 1030 mAh Nickel Metal Hydride
Current RX 50W ? ?
TX - - ?

Physical

Manufactured Between 1979 and 1986 in Japan Between 1929 and 1935 in USA Between 20xx and 20xx
Dimensions 340 × 140 × 300 mm
(13.39 × 5.51 × 11.81 in)
? ?
Weight 7.70 kg (17.0 lbs) ? ?
Form factor Base Station Base Station Handheld

Other features

Memories None None ?
Usage Amateur / Ham radio operators Amateur / Ham radio operators Marine / Navy
Features ¼" Head. Jack, S-Meter, Attenuator, NB, Mute Terminals, ANL, Line Out Jack, RIT, BFO, AGC, PBT, Speaker Output, MW Tune, Up-Down Tuning, Dial Lock, RF Gain, Int./Ext. VFO Switch. ? Floating
Submersible IPX7 (3.3 feet or 1 meter for 30 minutes)
Accessories ? External PSU: National 3580B ?
MPN JRC-NRD-000515 NATIONAL-COMPANY-SW-000004 STANDARD-HX000150