> Iagree with Hans -- I have really seen no difference between >construction on a ground plane when using pads and building > without them, other than building withoutis faster. > There is

Hi I have just posted a block diagram of the BITX - I hope I have correctly identified all the section of the main schematic diagram. Let me know of any errors. This will be used as part of a

...in which G0UPL travels to his local hardware store to further investigate the nature of the infamous tap washers, and in particular the differences between ordinary and "delta" washers. Samples

--- In BITX20@..., "ik1zyw" <pcravero@a...> wrote: It's me again. > Has anyone attempted to list all BITX20 components? I haven't found > any link on Ashan's page. Here is my attempt at

for the last 48 hours, groups.yahoo.com has been blocked out by the two major bandwidth providers to india. most of my internet accounts belong to isps that in turn take their bandwidth from either of

Farhan Sorry to hear of your problems. I'm sure you are right to fight for the free exchange of information. One possible solution is to use an anonymisation service such

Hello, I have uploaded a photo of a two-hole "binocular" ferrite core (see G4DFV album). Ashtar, please can you tell me if this is anything like the TV balun that you have used? My core measures

Farhan Fineon all of this, I have friends in your country who have reported the same beforenow. Hopeyou get access soon, MarkG0MGX

Hi I was wondering how to make a pad for the chip then thought use a piece of PCB with a cut through the copper in the centre and then additional cross cuts of the copper to make the lands for the

BITXers Since the tap washers, faucet washers here in the US, are mylon or similar plastic type material, it would seem that they do not contribute much to the functionality, other that to hold the

Very nice pads, applicable to many projects.I use an 8 pin Motorola microcontroller in my Morse Code training device, andthis will be great for those projects too. Info on the MCD is on my

Hi Charles, what you describe has been used in VK for a while now, described (and used) by Drew Diamond VK3XU - he is a master of this style of homebrewing and has published many articles over the

Hans Summers wrote : As I understand it, the " half -inch' refers to the bore of the water pipe with which they are associated - and includes three-quarter and one-inch as part of the series. A

Hi fellow builders, posting this link for information http://www.wia.org.au/armag/2002/AR_Sept02_Digital_Freq_Display.pdf - its a digital frequency readout using a PIC micro with user definable IF

Sam & other BITXers Your measurements explain my results then. Instead of tap/faucet washers I used 1/4 inch slices cut from "1/2 inch" PVC pipe (the schedule-40 or medium-thick-wall type). These

That's what I do too, when I need to. I use firm pressure on one of those cheap orange plastic "craft" knives. You can produce a nice thin cut with this method. The LM386 in the BITX20 I just mounted

An easier method to make a pad for non-SMD IC's is to use 0.1" Veroboard instead of plain copper laminate. Then only one saw/knife cut is required. KISS? Duncan G4DFV

A very nice readout. But for anyone wanting something *really* simple, have a look at my 2-chip binary readout counter http://www.hanssummers.com/radio/sfreq/index.htm . Also see my BITX20 in

Charles, Where did you post it? Students

And an even easier -- yet vastly more expensive -- method is to use one of the etched adapter boards that brings out the pins from a surface-mount chip to 0.1-in spacing pads. SMD chips can be