A mini SSB QRP transceiver for 14 MHz (20 meter band) by Peter Rachow (DK7IH) – Pictures

Here are some pictures of my recent project, a very small SSB QRP transceiver (schematics can be found here) that covers the 20 meter band. First let’s have a look to the front panel:

A mini 20-m 14-Mhz SSB Transceiver by Peter Rachow (DK7IH) - Front view

A mini 20-m 14-Mhz SSB Transceiver by Peter Rachow (DK7IH) – Front view

And here we go for an inside view:

A mini 20-m 14-Mhz SSB Transceiver by Peter Rachow (DK7IH) - Inside view

A mini 20-m 14-Mhz SSB Transceiver by Peter Rachow (DK7IH) – Inside view

Starting on the left you can see the AD 9835 DDS chip on the very compact breakout board by artekit.

The breakout board is mounted on a 2 x 8 pin socket row to have the possibility to change the IC ver quickly in case of damage (I set all ICs into sockets without any exception). Above the DDS there is the ATMega 8 micro. Right from the rf-shield made of brass you can see the 9-MHz local oscillator with the ssb modulator and product detector IC NE 612.

For more information on board layout and part distribution have a cursory glance on this commented picture:

A mini 20-m 14-Mhz SSB Transceiver by Peter Rachow (DK7IH) - Inside view with board layout

A mini 20-m 14-Mhz SSB Transceiver by Peter Rachow (DK7IH) – Inside view with board layout

By the way: Had some nice contacts today with stations from all over Europe with 5 watts out. The rig is really fun! 🙂

73 de Peter (DK7IH)

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