开云体育

hello, here AMP Lab at Virginia Tech - uBitx Workshop (google.com) ( https://sites.google.com/a/vt.edu/amp_lab/projects/ubitx-workshop ) on the bottom of the link this is the only kicad project I

Hello Earl What link exactly ??? I have tested my file with antimalware and Microsoft defender, no problem. cdt

Apparently, The link to the agc download installed an app on my computer that wanted access to my passwords then popped up again after I shut it down. Earl Cox? KB5UEW?Reply or E-mail me at:?

Which repository are the cad files going to be posted??? The one I have found does not show any cad files..... Bruce

Hi?Gerard OK ... That's what I recommend! The great advantage of this circuit, compared to an attenuator in the antenna input, is that this AGC manages the gain of the second IF and does not

Loris, look here the pdf file also look here [email protected] | a little question on AGC ( /g/BITX20/topic/79236220#84902 ) and search the Barry AGC? like that **** Gerard,

Hello iz oos, I did the tests! ... inserting the ND6T attenuator into the ?BITX is tantamount to committing suicide! I have a ?BITX # 6 that works very well even with very low signals (S1 and S2)

Hello, Read the article carefully There have been some malfunctions on this mount. If you want to redo the circuit with Kicad, t he whole layout of the components and the ground must be reviewed. The

Your Workshop is fundamental work! :)

Loris, you are right! 50% of loss is a lot! If I used 500w, I wouldn't like to loose half of the power warming the climate... But 3db in RX is usually negligible and I find the ubitx (I have ver.3)

hello Hello, Look here AMP Lab at Virginia Tech - uBitx Workshop (google.com) ( https://sites.google.com/a/vt.edu/amp_lab/projects/ubitx-workshop ) cdt

The vtvm of Antunio is very precise. If someone can take a stab at it, it could well measure the Audio RMS, something that only bench quality Fluke meters do.

Bill FET input op-amps are a good idea because the gain can be set precisely in the feedback loop part of things. Could turn out to be better than the original tube design. Good

Thanks. _._

Hi, I have a "solid state VTVM" factory built as you suggest. It has FETs and diodes. Another project I have in mind for a VTVM with an open power transformer is replacement of the vacuum tube

It is a good idea. Let me add that to the ubitx repo today.

It takes a bit of re-engineering but it is possible to replace the tubes in a VTVM with solid state diodes and MOSFETs. lowering the supply voltage seems to be the most difficult part of the

Hi Bob, I have some that still do. A statement that suggests a VTVM is a DVM with vacuum tubes is so far off. I have VTVMs AND DVMs. Each has it's place. 73, Bill KU8H bark less - wag more

Since the uBITX is mostly public domain it does sound reasonable for the schematic to be available in user editable format. Problem is if the as-built schematic is opened for public editing it

Did you heard anything about editable version of uBitx schematic diagram? KiCAd or whatelse? I wish to develop and publish h/w hacks in normal way, not photoshopping pdf-extracted bitmap. (Red-green