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This was in parallel with q74, which was not working (cold solder joint some where) now with original parts, pops are diminished greatly.

Very happy with my recently finished build of the (unmodified) uBitx v5: https://photos.app.goo.gl/P3goJ3msPL6UwWUx8 https://photos.app.goo.gl/PAcSbpFpCCcKojcE7 Antenna: QRPGuys 'no tune end fed half

Hi Ted... What you're looking for is a 2-state state machine with state transitions triggered by a button press. So, a very simple outline would be (pseudocode) loop: ??? if button_pressed do

Actually we have a version of the ND6T circuit built and available for purchase on our webshop! Comes built and ready for installation due to how tight we packed things in. But it makes for a super

No Radio Shacks around here either, I just search Amazon for "project box." This one seemed to be about the right size. Do you think taking the PA and Raduino grounds to the ground tab on the BNC

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

Hi Allison, Yes -- I already replaced the 3904s with metal can 2222s and q90 with a bpf102 plus changed the resistors and stuff.? Great mod -- plenty of power!? Thank you for that! What I'm

The hugest mod for me -- reducing the CW sidetone volume.? Wow - this I hear each time I use the rig.? Spurs, well I don't notice them myself !? Still I addressed this with a relay board and LC

Brutus, Changing the IRF510s will not fix the issues.? They can easily do good power and gain to past 6M but the rest of the amp can't.? The last things I'd change is the IRF510s and the RD parts

Tom, That last post of yours is definitely a keeper! Thanks! Perhaps it's not obvious to all forum members why a 1 Watt peak AM phone signal must be transmitting 0.25 watts of carrier with no

I favor that approach as well, if for no other reason than cheapness . Lol.? The other replacements served a purpose. I guess what I'm wondering is if replacing those would make it so there's no need

If you wamt to replace just for sake of replacement, no comment. Otherwise, just enjoy using the rig. One of my contemporary late om Rajan (vu2knn) used to comment that " a sleeping dog and a working

Hi?all, I’m simply not finding the time to build and modify this kit.? Still sealed in the original box. Needs a good home. $100 and its yours. I’ll pay ground shipping in the US.? Or make a

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

Thanks Gary and Skip

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

I have a v4 . Did lots of mods -- replaced the relays, l5/l7, if transistors, driver transistors (and related r changes etc), put a t filter in place of r27.?? Rv1 can be adjusted to give plenty

A quick look at the V5 schematic (relay changes over v3 and v4), it appears that the K3 relay pinout numbers now match standard relay pinout numbers (coil on 1,16). The K1 relay has not been updated

What about adding a small cap, say from 180 to 330pf across R911, R96, R941 and R942 to add a little bit more PWR on the higher bands (15-12-10m)? Il 09/mar/2019 17:16, "iz oos via Groups.Io"

John nice work!? I suggest not getting too fancy, and its not a huge difference between 12 and 13.8 volts.? the latter gives a fraction of an S-unit more transmit power and a little more heating in