This board configuration was conceived for Anvelin sdr, that is, in fact, it is an analogue of Anan-7000, this design can also work with Odyssey-2, not a big firmware correction for this transceiver here https://eu2av.ru/viewtopic.php?f=4&t=151
The board can also work Orion-MK2.
-Now some information about the design itself, the board is made in four layers and has a size of 230x200.
-The input power is enough 1 watt per input, if you reduce the feedback in the output stage, these are resistors R56, R57, R59, R62, then you can bring it up to 0.5 watts at the input.
Frequently asked questions on self-assembly can be asked here in this thread.
Below are the photos for the manufacture of the output transformer, for the manufacture of the windings I used the 16AWG wire purchased here https://www.aliexpress.com/item/1005001611628766.html
I used the braid from the RG316 cable, that is, the braid needs to be threaded into the 16AWG wire, so we get a homemade 15ohm cable, which fits much better than 25ohm.
Нажмите на спойлер что бы увидеть фото.