If you are still homebrewing using analog form factors and through hole components here is but more evidence, you need to move forward to SDR and surface mount. The really big guns and illuminati are already there!
Meet the Tiny 10 from W7PUA, Bob Larkin, a co-author of EMRFD. Out of the depths of the Silicon Forest, W7PUA has created a 10 Band, 10-Watt SDR transceiver which is described here.
I was put on to this amazing project by a blog reader also named Pete. There is more to the Silicon Forest connection with this rig aside from W7PUA and that is the use of the Teensy 4.1 MCU and SGTL5000 codec from PJRC also located in Oregon.
With absolute due credit to Charlie Morris ZL2CTM, more than five years ago he developed a SDR SSB transceiver using the Teensy 3.5 and the same Codec. I built two versions, and these two devices will indeed generate and decode SSB and CW signals.
Larkin cites some work in progress, and I did find that on very strong signals you can faintly hear the opposite side band. Likely since the W7PUA version is a later MCU and has some features not found in my earlier version that might not be any concern. That said I did not find any opposite side band being transmitted.
February 2025 HB SDR
Just so you are not confused I have built three homebrew SDR transceivers, all using the same mainboard (Two ADE-1's). Two are of the Charlie Morris topology and one uses a SBC like the Raspberry Pi, ASUS Tinker Board or Atomic Pi.
Do not pooh, pooh the fact that SDR is here and so is Surface Mount! The Tiny 10 is here and if you get any message from W7PUA it is the all band, small size and portability features that drive the high marks for this project. Did I forget to mention how it sounds on receive and transmit. This is a perfect rig for POTA, SOTA and FT-8. BTW he uses "plug in coils" to change bands!
Still want more incentive. Farhan's (VU2ESE) latest two products are SDR the sBitx and zBitx.
Them that know can make it go!
73's
Pete N6QW