Don.... on one side of the BS170 gate pin for example I get 2volts then on the other side I get 3volts = 5volts ((((depending where the trimmer is at))). Across from the two outside pins I get 5volts.

Hi Hans, Slightly correction to my earlier email. When I tried testing your sequence, I started on 8.11 and not 8.13. I guess if I started n 8.13, I would naturally have to change the encoder to get

I would expect you to, definitely. Are you using the QLG-1 gps board with the U3S? As I was building mine, modifying, and testing, with a single BS170 into a 50 ohm resistor as a quick and easy

Hi John Agreed with Alan Additionally: selecting banks via the three bank input selection pins doesn't write anything to EEPROM so doesn't cause wear. 73 Hans G0UPL http://qrp-labs.com

John, SAVING "wears out" the EEPROM. Method 1 or 2 saves. But you are not going to wear out the EEPROM with occasional changes. It is only relevant for serial programming when some one uses a

Hi Hans, Thanks for testing this. I had used a slightly different sequence. 1. Power is off 2. Plug in GPS 3. Power on 4. Go to Alignment 8.11 5. At this point, I start to see the weird behavior...

Don.....I have had those jumpers installed and uninstalled a few times now but still no output. And yes I’m using Slot zero....... I should be hearing some leakage +- the programed frequency

TNX Hans, ?Think maybe? I am there with Pr1.02 But please clarify ... which method causes * least stress * on eeprom? ...method one... Serial load; 05 = 7,000,000 08 = 7,000,002 11

Without the lpf relay board plugged in, and even with the relay/diode now installed on the U3S board, I think you'll need the 2 jumpers in place to essentially bypass anything related to the relay

I remembered thIs post so when my mouse recently passed on to greener cheeses i extracted all the switches. Two were conveniently mounted on a little board and had a very light press. My junkbox

Correct, I am using a trifilar transformer. Thank you for the confirmation. I'll order a Receiver module. 73 Simon G0FCU.

Understood. Thank you Hans! -- 73 de Andrea IZ1IVA - cq at iz1iva . net - http://iz1iva.net -- -- 73 de Andrea IZ1IVA - cq at iz1iva . net - http://iz1iva.net

Hi Larry... there is a degree of defensiveness in your reply that I don't believe is warranted. I just said it would be nice to have the occasional update, not an in-depth feature burn-down. I have

Thank you, Andy!

Hi JP The Ultimate3S was not really intended as a CW transmitter, it was supposed to be an automated beacon transmitter. The potentiometer tuning modification does not work in the current release. It

Hello Andrea The hex file does not incorporate fuse settings. You have to set fuses in your programmer software when you flash the chip. As I said on the PTT mod article though... this is unlikely to

Hello Gregg I have just tried a fresh QCX-40 with a fresh 1.03 chip, and the frequency calibration worked fine. Steps: 1) Go to menu 8.13 2) Plug in GPS 3) Wait some seconds until I see satellite

Hi Allison Simon might mean two 180-degree phases for the two signals into the double-balanced mixer. These are produced by windings of T1 in QCX, and by the trifilar transformer in the QRP Labs

Has anyone else tried to calibrate their QCX crystal frequencies with GPS with firmware T1.03? It doesn't work for me. I get strange button responses, and the QCX never does update the crystal

Will power it up tomorrow it’s getting late here. Wes -- wes377@...