Read first! I am no longer building this transceiver. Please check other interesting projects from Farhan on the discussion group, like HF-1 Transceiver, the replacement of the Minima and some cool RF jigs, Specan and Sweeperino. Also, since I’ve lost from both server and my drive the Eagle files of the PCBs, they will be no more available. Minima has become discontinued, check the group for more details. I will still keep the pdf files here for download for anyone still interested in hacking the rig.
Today I did some first tests on Minina, and the results were promising.
– AF amplifier;
– R/T switch circuit;
– LPFs switch circuit;
– BFO switch circuit;
– Microphone amplifier;
– AF Preamplifier;
– CW Tone generator.
Remaining the RF circuits:
BFO, Bi-Di Amp and Mixers, maybe next week when the crystals will arrive from China.
I did also a video with the smoke test. As you can see at the end, the CW tone has a very low level. Not sure if this is normal. It can be heard well into some headphones perhaps, but on an external speaker is weak. I will investigate that later.
In the meantime, Sandeep’s PCBs finally arrived! And they look wonderful! Happy to see my Minima preliminary PCB design machine made.