Friday, August 25, 2017

QRP labs QCX 5 Watt cw trx kit


Here is my new winter project:  http://qrp-labs.com/qcx.html 
I couldn't resist buying this little 10 x 8 cm gem with a lot of features for just 49 $ 

The two SMD ICs are already factory pre-soldered.
Compleet unit size incl. spacers : 101.6mm x 81.3mm x 34mm.

A nice 110x88x38mm enclosure for this transceiver can be found on eBay : Link
The grooves for the pcb are not used and have to be reduced about 1mm near the volume potentiometer and the pcb pylons. Also the groove at the LCD side may touch the soldering pads of the LCD . The PCB is mounted on the original 12mm pylons. These pylons are held by countersunk headed bolts to the lower cover. So to open the enclosure, remove the two knobs and the upper 4 screws of the side panels. To prevent stress to the PCB , the huge plastic BNC connector is replaced by a metall chassis-mounted type. This will automatically ground the enclosure.😉
By means of a shaft extender the difference in height of the controls is matched.

AGC. Unfortunatly there is no agc on this transceiver. VK3YE designed an easy to install agc with a minimum of parts as you can see at Youtube : Easy AGC

 
 Removing the groove in the cover is verry easy. By carving into the alloy as the picture shows the material weakens and can be removed with a small srewdriver .


More info coming soon.
Disclaimer:I'm not responsable for any damage due to improper reproduction of my projects.

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