I received and unpacked my bitx40 this evening, and included was a surface-mount capacitor inside a hand-cut segment of tape, which seems to match the packing list for "16. 1 x 0.1uf smd capacitor". T

#bitx40help

I'm looking to build towards future expansion, so I was thinking about a DPDT power switch since I'm replacing the audio gain pot to have a matching style knob with my tuning pot. One pole supplies 12

I'm very short on footprint inside the BUD box I want to use (7x5x3", it barely clears the stock heat sink), plus I was under the impression that step-ups are inherently RF noisy? I guess I could moun

Straight key, paddles, or capacitive key with a bit of extra work. John

4-40 screws and a 1/8" drill bit. John

I was reading about combining a Bitx40 with an SDR dongle here: http://bitxhacks.blogspot.com/2017/03/a-band-scope-for-bitx.html?m=1 Has anyone else done this mod? Is RG58 or RG-174 to the same area o

Or buy a pack of male-to-female jumper wires labeled for Arduino use (to make sure you get the right header pitch and pin size) and tear off only the 16 you need. My pack of 120 (40 male/male, 40 male

I'm using a Baofeng on my bitx40, I need a different option on my ubitx as the two independent jacks (3.5 and 2.5mm, a precise distance apart) sharing wires between mic, speaker, and PTT is making sol

#parts

Lawrence, Fiddler on the Roof has a song for you about tradition. :-p Plus the PTT switch and being able to switch radios easily. John

#parts

I think most would have the SDR dongle attached to the computer outside the Bitx's enclosure, so they could use the dongle with other antennas for different applications. I was going to run the coax f

Arvo, Very cool find, thanks for sharing! John

Maybe use a cheap dongle and a power meter until you're confident in the switch?

I'm 36 and a chemical engineer by education (I'll also admit, I was not a big fan of my one electricity & magnetism class during undergrad), but a recent job change put me into the world of RF. Rather

Or crush the SMD with clippers, then remove each half individually with a small solder tip. John

Has anyone made a desktop capacitive paddle? I was thinking about a wood base filled with lead shot, but the difficulty of making the top half look "nice" and figuring out size/spacing/etc put the pro

Here's a better link to the actual blog post in question, the previous link is to the blog in general: http://bitxhacks.blogspot.com/2017/03/a-band-scope-for-bitx.html So excuse the dumb question, wha

Or go with a metal military ammo can for really rugged construction. The lid even easily detaches, just open and slide sideways until the hinge pins disengage, so it wouldn't be awkward for shack use

#ubitx

Bottom line up front: I am having a problem with my Bitx40 where the power output decreases as I increase my frequency across the 40m band. I completed all of Allard's 1.27.3 mods, plus RX/TX lights,

#bitx40

Raj, Could you suggest a method for bypassing L1-L3? I'm not sure how I would do that with any temporary change, any approach I can think of would be permanent and then attempting to reverse the damag

#bitx40

Gene, What frequency did you test on, and did you try other frequencies? It turns out my Bitx40 shows different output levels depending on the frequency across the 40m band, maybe your board has the s