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So pleased to know you are copying CG3EXP direct. It will be exciting when they get up to the Arctic. Please keep me advised. Thank you for that excellent Blog. 73 Barrie VE3BSB

Hi Ivan I agree with Warren. Your L1 connection is incorrect. The Rev 3 PCB is laid out for a bifilar transformer, not a 25 turn inductor as used in previous versions. Nevertheless, you can use a 25

Ivan, Please double check your connections to L1. Refer to Page 6 and 7 of the assembly manual. In your attached photo? #2, I do not see anything connected to the pads labeled "1" in the diagram on

Page 21, section 7 mentions the OCXO, but setting the PA bias voltage is the same regardless, I think you are misunderstanding what it's telling you.. I suggest you read it again fully.. good luck

See post.. ?/g/QRPLabs/topic/did_i_break_it/5012177?p=,,,20,0,0,0::recentpostdate%2Fsticky,,,20,2,60,5012177 (

3. The unit shows constant drain of 84 ma regardless of PA potentiometer setting. *There is no special instruction related to potentiometer PA setting* . We have only seen a writeup related to setting

Thank you for the responses. I was waiting for my son to be able to perform some testing: 1. The unit is the latest version. using low pass filter for 10 mhz and the txco with crystal marked 27 mhz.

I'm guessing the IC1 is faulty. Measure the TXD out from the GPS module (pin 20 to R1) and see if it's locked up or is producing a serial output. ~DMM or scope would suffice I guess. If the GPS module

So I've removed the QLG1, it won't set date, time, location, nothing... the rest of the kit works perfectly, no issues, WSPR signals sent and heard, have to set time by hand of course.. not it sure

Set referance signal to 027,000,007 and hooked up an extermal antenna.. ? Looks like it's working to me (WSPR net reports) TimestampCallMHzSNRDriftGridPwrReporterRGridkmaz? 2017-06-06

FYI... just sent a test transmission after adjusting my reference frequency to 027,000,000 1650????9???0.3???14.097052????0???KK4QOE????????EL88?????23?????41

Hi.. little assist... I had a previous U3S kit which I cooked (made a mistake and input over 5 volts) it... ?rebuilt a new kit, one change I am using a TCXO instead of the supplied crystal, same

He already found the fault, one IC pin was outside the socket. /g/QRPLabs/topic/solved_was_re_new_u3s/5150701?p=,,,20,0,0,0::recentpostdate%2Fsticky,,,20,2,0,5150701

John, If your kit came with version 3.09 software did it have the AD9850 DDS module or an Si5351? If the former it will not work with software beyond version 3.09. Rgds Iain GM1MSS Sent: 04 June 2017

Among other goodies that came from QRP Labs was the receiver kit. ?I've got it mostly built and was looking over the last of the sub-kits to be constructed, the band Pass filter for 20M. ?I had

Hello QRP Labbers Several times recently posts come to the QRP Labs group which aren't so relevant to the group. So can I politely request please: To give feedback on the arrival of your order, ask

Hi Vince I'm sorry to hear of the missing items from your kit. I will get the missing sockets sent to you in tomorrow's post. 73 Hans G0UPL http://qrp-labs.com

Hi Ivan, As Michael said in his post. /g/QRPLabs/message/14484 Did you manage to successfully set the PA Bias? If you couldn't get quiescent current set per manual then the PA stage

how about pulling one of the xtal leads to ground and shut the 5351 off that way? Larry KB3CUF alan4alan@...> wrote:

Hans, Thanks, yes I was at first reluctant to try this way, it cannot be recommended. Then I thought that at least any DC on the 5351 output would not be shorted and that quite a few ICs have limiting