Siemens 745 E303

Desktop Shortwave receiver

Specs Manuals (0) Reviews (0) Prices (0) Compare

Find Siemens 745 E303 rigs and spare parts on eBay

Find the Siemens 745 E303 on Amazon
We receive a small fee if you buy through these links, which helps support this site. Thank you!

As a descendant of WWII receivers like Lorenz "Schwabenland" or Telefunken H.E."Caesar" (coil turret, IF filters) this receiver became necessary when West Germany was reintegrated into the world market in the late forties. It was used by different government authorities and on ships. Some of these receivers were exported to Belgium and France. Competitors were Hagenuk UE 11, Lorenz E 5 and Telefunken E 127 Kw. The shape of the selectivity curve doesn’t fit today's needs.

The E 301 is the first version (1952). The E 303, E 305 and E 306 (1953) are about the same with different power supplies covering 1.5 MHz – 30.2 MHz in seven ranges. The eighth compartment of the coil turret is not in use normally. An additional frequency range of 230 – 530 kHz and a vibrator for 24/110 V DC were available as an option.
There is also a model E 307. The precise differences to the E 303 are unknown; the faceplate looks about the same. The E 307 however has different frequency ranges: 1.5 – 3.0 / 3.1 – 4.6 / 6.2 – 6.5 / 8.1 – 8.8 / 12.2 – 13.3 / 16.2 – 17.4 / 22.0 – 22.7
Note that the E 302 is a relabelled former E 66a (1948) for marine applications. It is electrically and mechanically quite different and has a long linear dial.

General characteristics

HAM bands: ?
Frequency stability: ?
Tuning steps: ?
Memories: ?

Receiver

RX-range: 1.5-30 MHz (230 – 530 kHz optional)
Modulations: AM CW
Sensitivity: CW: 0.2 µV (6 dB S/N)
AM: 1.6 µV (10 dB S/N)
Selectivity: Variable 0.3-5 kHz (–6 dB)
Formfactor -6/-60 dB: 1:4 at 5 kHz bandwidth
Filters: ?
Receiver system: Single conversion, 10 tubes
IF-frequencies: 1st: 1326 kHz
Image rejection: > 60 dB
Audio output: 2 W/4000 ohms

Connections

Antenna: -
Impedance: 60Ω
Other: -

Electrical

Power requirements: Mains (110/125/220 V AC +/-10% 40-60 Hz, 65 W and 220V DC +/-10%, 85 W)
Current drain RX: ?
TX: -

Physical

Dimensions (w×h×d): 552 × 356 × 340 mm (21.73 × 14.02 × 13.39 in)
Weight: 44.00 kg (97.1 lbs)
Form factor: Base Station
Manufactured: Between 1952 and 1957 in West Germany

Other features

Usage: Marine / Navy
Features + options: -
Accessories: -
RigReference ID: 3960
MPN: SIEMENS-000745-E303

We do our best to be accurate, but if you've spotted something wrong or incomplete, please let us know!

Manuals, diagrams and brochures

: No documents available for this particular model.

: Upload relevant documents

Reviews & stories

Do you know this rig? Tell us something about it!

New and second-hand prices

Estimating the value of a rig can be challenging. We collect prices paid by real hams over the years to help you estimate the value of a used Siemens 745 E303. Just bought or sold this model? Let us know what you traded it for and help other ham operators!

These estimates are based on the following prices:

Year	Historic price	Condition	Submitted by

Login or Register to submit prices

Links & tools

About

RigReference.com aims to become the most comprehensive reference guide for ham radio equipment. If you have any questions or suggestions, or if you'd like to participate, please get in touch.

Buy me a coffee