Collins 51J-4 Kommunikationsmodtager

Description

Collins 51J-4 Kommunikationsmodtager, kender desværre ikke den precise stand, men der er lys i den når den sættes til strøm. Den har tilhørt min Far som har brugt den på Grønland. der medfølger også bogen Lærebog i radio teknik. Collins 51J-4 Type: HF receiver Frequency range: 0.54 - 30.5 MHz in thirty 1 MHz bands Tuning steps: Continuous Mode: AM / CW / MCW Weight: 19.5 Kg (43 lb) Other features: Noise limiter. 500 KHz IF output. 100 KHz calibrator. Receiver system: Single conversion superheterodyne (1.5-3.5 MHz) · · IF: 500 KHz · · · Double conversion superheterodyne (3.5-30.5 MHz) · · 1st IF: 1.5-2.5 MHz (Even bands) - 2.5-3.5 MHz (Odd bands) · · 2nd IF: 500 KHz · · · Triple conversion superheterodyne (0.5-1.5 MHz) · · 1st IF: 10.5-11.5 MHz · · 2nd IF: 2.5-3.5 MHz · · 3rd IF: 500 KHz Sensitivity: Band 1: Less than 15 uV gives 1 W @ 10 dB S/N · · Band 2-30: Less than 5 uV gives 1 W @ 10 dB S/N Selectivity: 100 Hz to 6.3 KHz (Depending on filter complement & selectivity setting) Manufactured: USA, 1954-1963 (Discontinued) Related documents: User manual v1955 (15.1 MB) · · User manual v1962 (9.4 MB) Kilde: RigPix — https://www.rigpix.com/collins/51j4.htm