por m606paz » 10 Feb 2011, 15:27
Muy buena foto patricio!!
Ya tambien pense que eran casi identicas!!
SCR-694 / BC-1306
was built as replacement for the much larger SCR-284.
It is a WWII- station, consisting of a separate transmitter and receiver in a single watertight housing. Frequency setting is done by a tunable oscillator; in addition two crystals can be plugged in.
It was used as mobile and portable station. It was developed for special forces and mountain troups, but was used by all forces, because the BC-654 (SCR-284) could not be handed out in big numbers.
WWII handy talkie BC-611 was built ecpecially for working together with the BC-1306; the BC-1306 also works together with the post war radio GRC-9 and many other HF stations.
Mobile operation uses the vibrator power supply PE-237 (rare nowadays); connectors and accessories of the successor GRC-9 are identical. So GRC-9's transformer- power supply DY-88 can be used.
Technical data:
Modulation:
AM, CW
Range:
25 km (AM); 45 km (CW)
HF output:
7 or 15 W
Tubes:
RX :
2 x 1L4
2 x 1R5
1 x 1S5
1 x 3Q4
TX :
1 x 2 E22
2 x 3A4
1 x VR105
Voltages needed:
6.3, 1.4, 105 and 425-500 V.
(Mobile power supply PE-237 or Handcrank GN-58)
Powered by:
6 / 12 / 24 V
Year of issue:
1944
Replaces:
SCR-284
Replaced by:
RT-77/GRC-9
After WW II,
GRC 9
is the first short wave radio introduced in NATO. It is not Transceiver, but transmitter and receiver are built in separate modules and must be tuned separately.
Purpose:
The system GRC-9 can operate with every AM station, which operates between 2 and 12 MHz. It can be used as stand-alone device or within group stations.
Frequency ranges:
2... 12 MHz, AM with 3 frequency ranges:
Range 1: 6.6... 12 MHz
Range 2: 3.6... 6.6 MHz
Range 3: 2.0... 3.6 MHz
Technical data:
Type of the signal transmission:
Carrier palpation (A1)
Palpation of the modulated carrier (a2)
Phonie (A3)
Transmitting power: due to TDv.5820/3-01 u. TM 11-263
with DY-88/ GRC9 high: 7 Watt Fonie, 15 Watt CW
low: 1 Watt Fonie, 5 Watt CW. "
with Hand-generator GN-58-A: High: 3,6 W Fonie, 10 W CW
low: 1,2 Watt Fonie, 5 Watt CW.
Range
Phonie: 30 km
CW: 50 km.
Number of tubes:
Transmitter: 5 piece
Receiver: 7 piece
Calibration:
Built-in xtal oscillator
Power consumption:
13.2 A at 12 V.
Complete Set GRC-9 (see below):
Transmitter/Receiver RT-77 GRC 9; Mounting frame MT350; Hand generator GN-58-a; Power supply (transformer) DY-88; Bag BG-174 for antenna equipment; Bag BG-172 for other accessories (antennas, morse key, small articles, tube box etc..); Mast base MP-65-a.
Mariano Paz
Socio n°27
1944 Ariel WNG
1945 Ford FAT
LU4ALM