I am learning RF electronics and I have the desire to start building real radio circuits with discrete components. So far I have just played with local oscillators (of course, without power amplification stages).
I would like to build a simple CW transmitting and receiving circuits that should work inside my house and I am very confused about the frequency I should use. Initially, I was considering the 27Mhz band because is free to use (my RC cars used to work in that band when I was a kid). However, my old oscilloscope has just 20Mhz bandwidth so won't able to debug my circuits and understand how they works.
That leads me to a lower one, I've think that 6.765MHz-6.795MHz ISM band should be OK, and even work on breadboards so I can iterate faster and experiment. However, I am still wondering if that is physically possible to make it work for very short distances like in my bench and without the requirement of large and complex antennas and just using a piece of wire of a selected a fraction of wavelength and at the same time using the lowest transmitting power as possible.