Bob: I have been digging into my programs here and I show your grayline starting about 0720 utc on December 1st. Is it possible for you to start transmitting at 07 utc, or even a bit earlier Please.
Back a while ago I got my foot firmly into my mouth re 20/1000 ringing induction on the POTS telephone network in this age. My apology to all. 20/1000 was used extensively in the old analogue network
Gentlemen: Same in the UK and both these are wrong. Go and get a scope and have a look. The proper designation of ringing induction from CO to Callee (a telephone term differentiating Caller [the ori
Oh My, another mistake in my dotage. Yes, several are correct the ringing induction has a component of 20 Hz, but it is a 20 Hz cycle of 1000 Hz that you get. There are a lot of reasons for this, but
I found one of these things locally here once, got a wonderful 5 inch diameter 80 m loading coil of aluminum tubing with a wire down the center out of it. Larry VA3LK
Gentlemen: Bob Reise says..... Make sure that you dont have anyone calling you when the phone line is connected to your computer as ring voltages can be as high at 140 volts AC The AC is not 60 Cycle
Steve: No, I am not. I had an ice storm take down the antenna before the 15th and I was in a car accident a week + ago and my back (and everything else that hurts) is not up to going up 250 ft for a
Richard: Sri for the mistake, but I finished my DDS one week ago. It needs callibration. Not sure if you are aware of it or not but what needs calibration is your real Reference frequency. If anyone
Greetings All: A new PIC device, the 16F628, has come along as a replacement for that old PIC workhorse, the 16F84. It is pin and functionaly compatible with the 16F84, has more memory and its greate
John: Nothing seen of Larry's signals at 137789.4, but not surprising since loop in wrong direction for Canada. In the daylight here I have just been out and found the broken end of the LF antenna th
Alan: I was very convinced I heard it "swoosh" by at the time, but being a level headed skeptical sort of person, knew it wasn't possible to have heard the actual meteor entry itself There have been
Bob: It is a fine day here today in Wellington, so there is little doubt that we will have ZL6QH running on LF from this afternoon. Good Luck to you! I have an inch of ice, bad ice storm again, all a
Andy: First, my thanks for not choosing a signal reference that is Eurocentric, DCF77, MSF etc. That is appreciated very much. Clarification. What you have done is taken a crystal 4.1.... MHz, that i
Andy 'JNT It is a great pleasure to be able to send you something Andy.... Larry VA3LK ;** ;[email protected] LIST p=16F628 ;PICF628 is the target processor ; ; ErrorLevel 0 ;0 for Messages, Warnin
Greetings: I have for some days been struggling with achieving consistent and accurate serial port operation, especially when the Interrupts are being hit at a high rate. The APNOTE from MICROCHIP do
David et all: The latest QST has another DDS design with 1 Hz steps that are not quite 1 Hz really, rather sad to see the impact of thinking that can only cope with 1 Hz increments hi. and I checked
Andy: There was a techniques described a couple of years ago for using these chips dead bug style. Mount the chip upside down on a piece of unetched PCB. Bend the grounding pins down and solder direc
Alberto: thanks for the encouragement. I think to have a steady hand, so will buy one of those nice moveable round neon lamps with a magnifier inside, an ultrafine tip for my Weller soldering station
Greetings All: This discussion of DDS chips reminds me of a problem I have here. I have two, very nice TOYOCOM TCO-512K oscillator modules. I want to put these to work here. The output waveform looks
