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My first BITX40 #66 the volume control failed. The failure happened when I resoldered one lead that came off. The plating quality is not good IMHO. Check the DC voltage on LM386 pin 6. The

NJ ? -- John - WA2FZW

Dexter, It went dead over time. Looks like the horrible volume control have up the ghost. - f

... or wired AAF (Kiwi slang, arse-about-face). Measure your pot wiper-to-each-end. Rotate shaft to 'minimum' as though (or if, then as) mounted in panel. Now which end measures 0 ohms? That's the end

I would imagine the vol control is suspect at this time... - f

Hi guys, I’ve been tied up for a few days and just been able to revisit my original post. I have a 50 ohm 20db attenuator. If I run my RigExpert analyzer into the attenuator and then the attenuator

Excellent! Use that to follow each step thru the audio with an antenna connected to it. Doesn't matter what it's receiving, even noise will show an ever increasing waveform. Actually noise is

Good conditions, but lots of stations.? Made contact with Willie, W1LY (Rhode Island) and Ken, WI1B (Massachusetts) Heard WA2FZW(?), N2CQR (VA), WA3O (PA), N8DAH (MI), KA9OOI (IN), N6ORS (WI)

I'd definitely try to remember which toroid it was. My guess is that the insulation on the magnet wire wasn't quite properly removed, and you have a very flaky solder joint there, waiting to fail

I too had intermittent receive. I used the very non-technical "tap" method. One of the tiny toroids had a problem either in the winding or the soldered connections. I tapped/wiggled it so that it

Put a switch on an I/O pin and use INPUT_PULLUP with pinMode(). When a NO pushbutton is pushed, the line is pulled LOW, which changes its state. Jack, W8TEE To: [email protected] Sent: Sunday, October

Vince I do have a scope. KG6PO

I had to yell to get through the noise but just managed to work W1LY with a very minimal exchange.

Yes that is what they're probably trying to say. But the wording is very confusing to programmers without an EE background. Many don't understand the real purpose of pull up resistors. 73 Allard

From p66 section 14.11.6 of the datasheet at: ?http://www.atmel.com/Images/Atmel-42735-8-bit-AVR-Microcontroller-ATmega328-328P_Datasheet.pdf (

Yes, I suspected that might be the case. I think I'll put bypass capacitors on both the keying lines and the function switch and spot switch. It probably doesn't help that I am using a plastic

Wait a minnit. I think I understand what they're so horribly trying to say. When input pullup is NOT used, a floating connection is low (or presumably low). So in order to get it to do something your

As I stated when I put it there, it came from the Arduino docs. Vince. -- Michigan VHF Corp. http://www.nobucks.net/ http://www.CDupe.com/ http://www.metalworkingfun.com

Ah, very nice. And 6 more bytes! ? They all count! Regarding pullups, this statement isn't exactly correct, but I think I understand where they are coming from: " This effectively inverts the

Exchanged call signs with W1LY, then he disappeared. Worked N2CQR in VA. Heard WA3O and N8DAH. I'm still on! -- John - WA2FZW