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Hi! I have came across this sgc. It is made for Xiegu x1m but i think it may work on our bitx. What do you think?
https://www.ebay.es/itm/232249974293?

Cesar,

The X1M uses the MC1350p IF amplifier chip in it's IF section which in standard configuration has it's AGC pin set with a preset pot. The MC1350p has a gain of about 40dB and has AGC (although AGC not used in the standard X1M).

The AGC board produces an audio AGC control signal. You lift the AGC pin on the MC1350p and connect the audio AGC control and you have AGC for the X1M.

Unfortunately the Bitx has no vairable gain IF stage to which an audio AGC signal could be applied so it will not work with the Bitx (without a lot of redesign work and modification).

Regards,

Peter VK1XP

A pitty I can't take advantage of this two pieces... they arrived today

i

dang! i ordered one too hoping it would work on my bitx40.....

There's a nice list of agc boards and mods for the ubitx here:?https://ubitx.net/category/agc-mod/

Its possible to use with a uBITX - but here is the complexity -- need to replace the 12 MHz IF bidirectional amplifier with that board, a separate board on transmit -- and 2 switches.? a few have actually done this.?

I am finding just being able to attenuate the S9 and higher signals is delightful.? Try the ND6T circuit (I honestly think my problem was connecting it improperly maybe) - two versions available.? I am now thrilled with the VK3YE solution that I have installed.? Neither of these come pre-assembled at the moment, but each uses very few parts so these can be homebrewed.?

Meanwhile one of those boards could be great in a homebrew receiver or transceiver, if you don't want to do the surgery on the ubitx (honestly this rig is so cool why not if you are willing).?

73 Curt

--
Tim Keller - KE2GKB