After seeing some videos about small HF transceivers for Summits On The Air (SOTA), I feel I need to set the record straight.
The following video shows the World’s Smallest SOTA Transceiver in use. Of course, it uses the UHF spectrum because shorter wavelengths enable smaller ham radio stations.
The radio shown in the video is the NKTech NK-M1 UHF transceiver.
This radio is a 16-channel UHF transceiver, available from multiple online vendors. I programmed it to operate in the 70 cm band on 446.0 MHz.
73 Bob K0NR
Intermod must be a nightmare on this little radio
With a drill you can save a few more grams of weight by drilling many holes
The radio performance is quite poor. I wouldn’t recommend buying one. I purchased it just for the novelty of a small radio.
Great idea on drilling holes. Gotta get the weight down!
You might look to what Adam-K6ARK has done for tiny transceivers…https://www.youtube.com/watch?v=6rKpxAWZ7uM&t=3s.
Also interesting is the Spartan Sprint, with complete radios (battery, headphones, key) weighing in at 0.14 pounds (in November – December results shown at 0.16 pounds):
http://arsqrp.blogspot.com/
HF transceivers? You should look into getting a QRP Labs QCX-Mini. https://qrp-labs.com/qcxmini.html