Experimental mini SWRX

Experimental mini swRX

Experimental short wave receiver with touch screen function.

Device Properties: IF 10.7 MHz with 455 kHz frequency-dialer.

The slightly smaller version of the swRX in which the band and frequency steps were offloaded to buttons to enable faster access. Mod chip and ATT can be selected via touch screen. The goal was to achieve a smooth and comfortable operation.

For a detailed view of this device, see attached Video below.

Dimensions & Weight

Height:
11 cm
Depth:
18 cm
Width:
30 cm
Weight:
1.4 kg

Video

Philosopy

The Stampfl receiver is still in its experimental stadium and is not, comparable to a KWZ-30, Reuter or Perseus receiver.

But an Assembly kit for the near future is in planing. Specially made for HAM Radio Enthusiast how like to build their own radios.

The technology used with exception of the TFT Display and DDS is analog. A standard IC in DIL execution makes the circuit easy to build up. Many components are therefore inexpensive to acquire. Compromisses where made in: frequency stability, frequency accuracy, and birdies.

Great emphasis where made on the selection in the input circuit with T-50 toroidal cores and quartz filter in the 1st IF (8-pin). The circuit requires no further tuning. A measurement park is not necessary.

Summary :

An interesting device with easy operation, attractive design.

Thanks to Rolf HB9QN for time-intensive support in software.