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@...

I must have mis-read that James ...Im Going to have a look at page 11. appreciate your help :-) Wes wes377@...

Simon, The RF should be in phase. Thats the likely source of pain. The LO 90 degrees The output is then IQ -- Please reply on list so we can share. Off list email goes to trash, I had to due to

Hi Allison and all, Has anyone done a 3 phase receiver rather than an I Q receiver. I seems to me that near zero hertz the performance 'should' be 'much' better as there are no near-zero signals

Hi Allison, I have checked on my scope and my input RF is being split into two signals 180° out of phase with each other for input to the FST3253. The LO inputs from the si5351 are 90° out of phase