SM2YER Goran's Homepage

- Tranceiver DRAKE TR-4C -
Picked up this tranceiver 2006.06.27 from it's first and only previous owner SM2CUV Goran. This photos is taken after some 'initial' cleaning. Lots of job is remaining. The former owner used it from brand new in 1974 until about 1990,- And now it's 16 years of peaceful rest is ower...

2006.07.09 Disassembled some of the rig, mainly the final compartment, documented using notepad and the digital camera. Noticed some lose connection jumpers and other parts, need to check against other rig's or maby able to read something about it from know'n mods on the internet. Placed an order for some parts from Surplus Sales of Nebraska

2006.07.23 Started to reassemble some of the final compartment and VFO/Scale parts after cleaning.

(Klick for large image)

(Klick for large image)

- More pictures -
Some more pictures from the restoration

- Documentation -

Complete Users manual (In 14.7Mb .pdf file)

High Resulotion Schematic diagram (In 1.4Mb .pdf file)

Spare parts list (In 828Kb .pdf file)

Powersupply AC4 Users manual (In 651Kb .pdf file)

- Technical data -

FACTORY SPECIFICATIONS
========================================
GENERAL
Frequensy Coverage ...... HF 600KHz on Amateurbands (NOT WARC)
                          3,5-4,1 / 7,0-7,6 / 13,9-14,5
                          21,0-21,6 / 28,0-28,6 / 29,1-29,7
Modulation .............. SSB / AM / CW
Power supply ............ +600V/300mA
                          +250V/200mA
                          -45 to -65 BIAS Voltage
                          12,6V DC 5,5A
Antenna connector ....... SO239
Antenna impedance ....... 52ohm nominal unbalanced

Dimensions .............. 13,97cm(H) x 27,31cm(W) x 36,51cm(D)
Weight .................. 7,26Kg

RECEIVER
Sensitivity ............. >0,5uV for 10dB (S+N)/N ratio
Selectivity ............. 2.1KHz -6dB and 3.4KHz -60dB
IF Frequenzy ............ 9MHz
Audio Output ............ 3 W
Output Impedance ........ 4ohm

TRANSMITTER 
Output power ............ 300W PEP SSB, 260W CW, 260W PEP AM
Microphone impedance .... High
========================================

Serial number on my TR4C

According to the DRAKE serial number database @ WB4HFN Website This serial number is quite high,- first registred number for a TR4C is 34253 and the highest is 42391.

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