R-1490/GRR-17 USMC RADIO RECEIVER

A neighbor (non-ham and non-radio enthusiast) has two of these units that he got some years back. Both are in pretty nice physical condition but not operational.

Radio #1 (S/N A160, case A88):

 

Radio #2 (S/N A296,):

 

Note only one set has the AC cord while both have the DC cord. Neither radio is working though one has audio but no RF through.

 

 

For model R-1490 / GRR-17, National Company; Cambridge & Malden (MA):
R-1490/GRR 17 – Frontseite

 

Country: 

United States of America (USA)

Manufacturer / Brand: 

National Company; Cambridge & Malden (MA)

alternative name

 

National Toy Co.

Brand

Thrillbox

Year: 1968–1970

Category: Military Equipment

Semiconductors (the count is only for transistors)

Semiconductors present.

 

Main principle

Superhet, double/triple conversion

Wave bands

Short Wave (SW only)

Details

Power type and voltage

Line / Batteries (any type) / 115 / 24 Volt

Loudspeaker

Permanent Magnet Dynamic (Pdyn) Loudspeaker (moving coil)

Power out

1 W (unknown quality)

from Radiomuseum.org

Model: R-1490 / GRR-17 – National Company; Cambridge &

Material

Metal case

Shape

Rack

Dimensions (WHD)

431 x 203 x 308 mm / 17 x 8 x 12.1 inch

Notes

coverage 2 – 30 MHz, AM, CW, USB/LSB, FSK;
tuning via decadic knobs and ernier tuning

Net weight (2.2 lb = 1 kg)

19.8 kg / 43 lb 9.8 oz (43.612 lb)

Source of data

Shortwave Receivers – Past & Present (3rd ed.)

Model page created by Martin Bösch. See “Data change” for further contributors.

https://www.radiomuseum.org/r/national_r_1490_grr_17r1490_grr1.html

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

BAMA has the operating manual at: http://bama.edebris.com/manuals/military/r1490/