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Desktop Shortwave receiver
Mobile VHF Transceiver
Amateur Base Station Antenna tuner

General

HAM bands ? 2m  160m  80m  60m  40m  30m (WARC)  20m  17m (WARC)  15m  12m (WARC)  11m (CB)  10m 
Freq. stability ? ? ?
Tuning steps Continuous ? ?

Receiver

RX-range 15,5-26,6 / 23,5-41 / 37,5-65 / 64-115 meter
110-175 / 170-300 / 290 - 570 meter optional
144-148 MHz 1.8-54 MHz
Modulations AM   FM   All mode  
Sensitivity ? 0.5 µV @ 12 dB SINAD ?
Selectivity ? ± 12 kHz @ -50 dB ?
Filters ? ? ?
Receiver system TRF with regeneration XTAL ?
IF-freqs. ? ? ?
Image rejection ? ? ?
Audio output ? ? ?

Transmitter

TX-range - 144-148 MHz 1.8-54 MHz
Modulations - FM   All mode  
RF-output ? 1 / 15 W ?

Connections

Antenna - SO-239 SO-239
Impedance 50Ω 50Ω ?
Other - - -

Electrical

Power req. 6 + 45 + 135 + 180 V 13.8 V DC 12-14 V DC
Current RX ? 150 mA < 500 mA
TX - 3.5 A max ?

Physical

Manufactured Between 1929 and 1935 in USA Between 1973 and 197x Between 202x and 20xx in China
Dimensions ? 250 × 60 × 225 mm
(9.84 × 2.36 × 8.86 in)
200 × 40 × 130 mm
(7.87 × 1.57 × 5.12 in)
Weight ? 2.00 kg (4.4 lbs) 800 gr (1.8 lbs)
Form factor Base Station Mobile Base Station

Other features

Memories None 12 channels in 1 bank(s) 16000 channels in 1 bank(s)
Usage Amateur / Ham radio operators Amateur / Ham radio operators Amateur / Ham radio operators
Features ? Built-in 1750 Hz tone burst ?
Accessories External PSU: National 3580B ? ?
MPN NATIONAL-COMPANY-SW-000004 ZODIAC-GEMINI MAT-TUNER-MAT-M000030