TGSL SMD

[dbanner]

If you are not getting chatters when sensitivity is turned up fully, then you could be loosing some depth. The sensitivity control would normally be adjusted right up to the edge of where the chatters begin. This would give you best possible depth without too much chattering. On my TGSL, I was not getting chatters even when sensitivity was at max, placed a 470K resistor between pin 2/6 and pin 4 of U106, and changed R38 from 1k to 200K, then I was able to turn sensitivity up to the point of chatters, and got greater depth.
I got these changes from somewhere on TGS thread. I was trying to find it again, but that thread is 225 pages long.

[ripsdevala]

Nice! Add 470k between pin 2 and 7 u106 show the chatter, and increase the deep to 26cm clear, 30cm trtt trtt..... There us no R38 in this smd board, if i add 220k to pin6 to the gnd the sens will decrease.

[dbanner]

I just looked at my tgsl board, seems like I put 470K between pins 2/6 and pin 4 of U106. Pins 2 and 6 are electrically connected. Also I put 200K for R38. Look R38 on schematic here that I used for my tgsl build.
470K goes between pin2/6 and pin 4 not pin 7. can't seem to find the thread where it is discussed.

[dbanner]

If you are getting chatters without 200k then I suppose thats good, whatever works.

[ripsdevala]

Eh... yes pin2/6 with 4, my bad.... Solved, time to box it

Addition, i add jumper with switch as blobber mod to get a little more deep when necessary.
And add 1m betwen pin1 u106 to pin5 u107

[BKY1337]

Can you please tell me what was wrong in the layout?
Can i use it as it is?

Good Luck!

[ripsdevala]

Just add jumper/link for 4024 gnd, the layout missing it, Im remove diode labeled spare 4148.
If u have trouble like me, just change BF245 with another type, if not working try add the mod above post.
I use 10uf BP instead pair of 10uf for c14 and c17, more deep with it.
My current parts
Lf353=Ne5532
Bf245=J201, previously 2n5458, mpf102, afer i put J201 the chatter come without add 470k resistor Mod, if u add it it will chatter more and annoying.
I will try DD coil now.... Good luck

[daluka]

post nr. 33

A little bit big for 4024 smd to dip
[ATTACH]41721[/ATTACH]

This version has a mistake, IC 4024 pin 2 and 7 must be connected to gnd.