Marine Receiver – Elektromekano M97

Posted on by

Review by Radio Officer Riccardo MEMEO (The Netherlands)

Dear Sparks,

an excellent Rx that I had the pleasure to use on board two ships: it is the Elektromekano M97 that can be seen on the photo of the entire RT station that I include. It was like the Siemens 745 E310 with the bandspread every 100 kHz. However, it had the advantage over the latter that the bandwidth was selectable according to the type of modulation chosen. On A1 could be selected the 300 Hz filter in case of strong qrm.

Elektromekano M97

Some features:

General coverage communications receiver, double conversion superheterodyne (single conversion below 3,7 MHz).

Range : 14 kHz to 26 MHz in 10 bands, 14-21.5 kHz; 96-230 kHz; 240-530 kHz; 600-1500 kHz; 1.5-3.8 MHz; 3.7-7.4 MHz; 7-11 MHz; 11-15 MHz; 15-19 MHz and 19-26 MHz.

Modes : AM/CW/MCW/SSB

Selectivity : 8.2/4/2/0.6 kHz -3 dB

Sensitivity : < 3 to 5µV 20 dB S/N (7-26 MHz)

IF Rej. : > 90 dB typical

IF : 1300-1200, 560 kHz

Image Rejection : > 65 dB

Audio out : 3.23 Ohm 1.5 W

AGC : Off/Short/Long

18 Tubes used : 2 EF85; 7 EBF80; 4 ECH81; 1 ECF 80; 1 EAA91; 1 EL95 and 2 OB2.

Calibration for bandspread every 100 kHz. (same as the Siemens E 310)

The M97 is supplied with 9 built-in crystals, plus sockets for additional 10 crystals, covering the complete  marine coastal frequencies in the 4, 6, 8, 12, 16 and 22 MHz for extra frequency stability.

Dimensions : Cabinet version 564x408x434 mm 44 Kg, 22.2x16x17” 97 Lbs

Best regards

R/O  Riccardo MEMEO