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Richard,
If you haven't already, consult the information in the link below from Unit399 (a member on this forum).

[URL unfurl="true"]https://unit399.wixsite.com/858ssb[/URL]

Look through the page for the modification to the L4 coil for increased receive sensitivity. I performed this on my 138XLR & 139XLR (same chassis) and could tell a big difference.

This doesn't explain your low receive sensitivity but should answer your question about the cut trace.

The can itself should not be soldered to the FET but the full winding of the coil (as opposed to mid-point winding tap) of L4.

I have also installed the 2-FT2 crystal filters in series (as suggested by Unit399) both on my 138XLR and 139XLR and it is indeed a game changer.

73
David

[QUOTE="Dmans, post: 787815, member: 49046"] Richard, If you haven't already, consult the information in the link below from Unit399 (a member on this forum). [URL unfurl="true"]https://unit399.wixsite.com/858ssb[/URL] Look through the page for the modification to the L4 coil for increased receive sensitivity. I performed this on my 138XLR & 139XLR (same chassis) and could tell a big difference. This doesn't explain your low receive sensitivity but should answer your question about the cut trace. The can itself should not be soldered to the FET but the full winding of the coil (as opposed to mid-point winding tap) of L4. I have also installed the 2-FT2 crystal filters in series (as suggested by Unit399) both on my 138XLR and 139XLR and it is indeed a game changer. 73 David [/QUOTE]

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