The EKV was used from east-German news-services, by the army "NVA" and on ships.
The RX was produced to beginning of the seventies in different models and configurations of the VEB Funkwerk Köpenick.
The receiver is full-transistorized and works with mechanical IF-filters, ISB-demodulator, diversity-option and the FSK-demodulator.
This was newest of the communication-technology. After the reunification of the two German states came lot of
receivers on the market. Because of the high weight of 52kg, the receivers were usually to be received very favorably.
The range of the EKV without options: 1,6 - 30 MHz. The high absolute-precision and constance of the frequency input
reaches by using a thermostate for the 1 MHz main-oscillator. The main-oscillator decides the precision of that electrically
and mechanically n x 1 MHzes and n x 0,1 MHz-frequency steps. The 100 kHz-interpolations oscillator is in the same
thermostate installed too.
With the antenna-diversity-option AAD02 the electronic can be switch between 3 separate antennas or 3 antennas
with different polarization for receiving on ships or other mobile stations.
The currently selected antenna is shown at the control-instrument. Simultaneously you can use the AAD02 as antenna-selector
for 4 antennas.
The option "long wave converter" LZ01 got his own antenna jack. With the LZ01, the range will be 14 - 535 kHz and 1,6 - 30 MHz.
EKV 01 receiver in the small casing
EKV 02 receiver in the small casing
EKV 03 receiver in the small casing
EKV 10 receiver, DM031 A3B-Demodulator NF 250 - 6000 Hz
EKV 11 receiver, LZ01 longwave option, AAD02 Antennadiversity, DM011 FM-Demodulator 1 chanel
EKV 12 receiver, AAD02 Antennadiversity, DM023 FM-Demodulator 2 channels, DM032 A3B-Demodulator NFS 300 - 3400 Hz
EKV 13 receiver, LZ01 LW-option, AAD02 Antennendiversities, DM023 FM-Dem. 2 channels, DM031 A3B-Dem. NF 250 - 6000 Hz
EKV 14 receiver, AAD02 Antennadiversity, DM023 FM-Demodulator 2 channels
EKV 15 receiver, AAD02 Antennadiversity, DM011 FM-Demodulator 1 chanel
Einseitenband - K urzwellen V erkehrsempfänger EKV 13
Singlesideband - S hortwave T rafficreceiver EKV 13
14-535 kHz / 1,6-30 MHz
frequency exactly tuning: better 100 Hz (200 Hz with LW) after 2h, +5 - +45°C, ±10% power-variations
frequency constance: better 40 Hz / 24h after 2h finish-tenses, +5 - +45°C, ±10% power-variations
3 x superhet
IF: 38,3 MHz, 3,2 MHz, 200 kHz
mechanicle digitaldisplay on 100 Hz exactly
AM, USB, LSB, FSK
A1, A2, A3, A4, A3J, A3A, A3B internally, A3B external, F1, F4, F6
A3J with 2700 Hz bandwidth and 20dB noise distance «2.0 uVs
ZF bandwidth: +6 kHzes, +2,7 kHzes, + / - 3 kHzes, + / - 1,5 kHzes, + / - 700 Hzes, + / - 250 Hzes, + / - 75 Hzes
RF-Gain, AGC 2x, antennas - Diversity - 4 inputs, telex demodulator
antenna input: approximately 75 ohm asymmetrically, all inputs have a protection-circuit for values bigger 40V at 75 ohms
tuningdisplay for FSK ( tube ), 2 x connection for teleprinters F 1100 or F 1200 or the like
Power: 75 W with thermostat, 45 W without thermostat
The EKV of the model-series 10 - 15 is installed in a 41,5 x 41 x 53 cm
gray metal-casing, above the main-receiver additional options find place.
The model-series EKV 01 - 03 contains the receiver only and built in into a smaller casing.
The receiver can be used with 24V DC or with 110/127 and 220 V AC.
Through pull out of the volume-knob
you can deactivate the speaker. (if you use headphones / teleprinter)
this photos offers an nice view for the technology-enthusiastic amateur.
A view of the receiver with front-plate removed.
the front-plate from the back seen. All mechanical connections are put
so the front-plate can be installed in seconds without problems again
backview of the EKV. You can see the construction from singles-modules very well.
the modules can bee removed simply through remove of 4 screws.
all cables are marked with colors.
finest mechanicals for tuning ....