First TX here, dates 2002... a single valve (tube) crystal-controlled triode-pentode ECL82 http://hanssummers.com/cwtx and yes, polyphase receiver with Huff Puff stabilized VFO http://hanssummers.com/

#40m

Hi Lee The QCX has plenty of gain. Probably even too much, see http://www.qrp-labs.com/qcx/qcxmods/qcxvolume Sensitive headphones are not required. I use old cellphone earphones and never operate my 4

Hi Kevin I checked the post I made about the correct fuse settings, it says: Low fuse byte: 0xF7 High fuse byte: 0xD1 Extended fuse byte: 0xFC 73 Hans G0UPL http://qrp-labs.com

Hi Erich The GPS shares processor pins with the paddle inputs. So the GPS must only be connected when beacon is enabled, or when doing the frequency calibration menu functions. Frame and Start must bo

#gps #qlg1

Hi Julian The row of blocks is nothing to do with an erased EEPROM file. If the EEPROM file is erased but in other aspects your upgrade was fine, you will still get text on the display. Your blocks me

#qcx

Hi Andy Not sure if you are aware of the Ultimate3S panels http://shop.qrp-labs.com/enclosures/panel which are sold separately as well as part of the enclosure kit. There's a panel variant without a p

Hi David Remember there's a 1.01a now. Because there was a bug with CW decoding when editing messages (keying in messages using CW). So better to use 1.01a not 1.01. I'm using Linux for the last 6 mon

#qcx

Arduino is a particular set of basic functionality wrappers and a bootloader, in addition to the sketch that you write. The QCX is not written using the Arduino envrionment, it is written using pure C

#qcx

Hi Shirley Thanks for the interesting comments and the link to the SM5BSZ paper which I read with interest and have saved also for future reference. I put the comparison of the QCX phase noise with th

Hi Alan For a long time we've been using a script to program the chips. I don't know how it could be possible for fuse settings to be wrong. If fuses weren't programmed correctly there'd be other cons

#qcx

Hi Jim I'm not familiar with avrdudess. The correct thing to do is program ONLY the .hex file. If there is an option in avrdudess to not program fuses, good... don't program fuses... I sent a post wit

#qcx

Hi You could refer to the manual, or check the traces diagram, or inspect the board; the way I remember it is that the +5V and Gnd pins are the ones closest to the edge of the board. That is not deter

Hi Geoff I didn't suggest a solder pot, someone else did. I suggested not overcomplicating the whole thing. Just use the soldering iron or wire cutters. That suffices for any size of wire. When using

Hi Luc You could have done this in all the previous firmware versions; the behaviour was always "Both" anyway, and it is still the default. It's the "Tip" and "Ring" options which are new, and make it

#qcx

Hi Ian Our emails crossed, I already replied just now 73 Hans G0UPL http://qrp-labs.com

Totally agree, Alan G8LCO This is easy. We all already have a soldering iron and a wire cutter. That's all that is necessary, for ANY thickness of wire. Nothing else is needed nor desirable. 73 Hans G

Hi Alan Yes, theoretically, the fuses should be set with "preserve EEPROM contents during chip erase" but it is possible for people to change the fuse settings too, so who knows... anyway I have conta

#qcx

Hi all The wire in the QRP Labs QCX kit, LPF kit, BPF kit, U3S kit etc is all 0.33mm (AWG #28). All the same wire. It is very easy to burn off the insulation just by holding it in a large blob of molt

Hi Don & Don Glad you guys got it all sorted out now! Maybe the original doesn't work with the Adafruit GPS. Neither of you have that pricey Adafruit GPS so we don't know. I consider it highly unlikel

Hi Don Note that the GU-7 is uBlox family chipset and the QLG1 is MediaTek. There are very few, if any, compatibility issues between them even though they're different families. There would be even fe