Hi, John Looks like you have a short to ground on the other end of R6. That would be either solder splash, stray wire clipping, etc or shorted C44 or shorted IC4 pin 3 or 10 to ground.

Hi Andrew, I have attached two screen shots from the VNA program with the U3S running on topband, 1.84MHz. I used a 50 dB homebru pad. I removed the 5W internal power amp. I suspect the sub-harmonic

This is the plug and socket I use is a Winchester Connector model M5S I have them on my U3S, QCX and my Bitx40 with QRP Labs VFO. This way I can use the same GPS with each rig Never an

Brilliant!

Hi GW4SWI, Here is my two penny’s worth: disconnect the 5 watt PA and put it aside and test the U3S individually, make sure you have the highest frequency you are using in slot 5. I have no idea

Ted, the hour, day and year don't matter. It is only the minutes and seconds that need to be exact. For WSPR, I use a XP laptop with an old GPS unit which has the Y2K problem for timing

Apologies Alan 40m On a temporary dipole laid out on a 1m high beech hedge, I have been getting reports as far flung as Capetown and Nevada for the last month during the wee hours on the QCX with

Ted, It is always worth telling us what band you are using, many close at night with the present state of the ionosphere. As far as time zone goes it makes no difference to the TX signal, just to

Just started reporting again without intervention Maybe just the conditions

If setting this manually, should it be set to local or GMT/ZULU/UNIVESRSAL? I've just realised that since the clocks went foward last Sunday, I have been using local. It was working but I stopped

Sri hit the wrong key 1- 10K 2- 107 ohms 3- 6.2M 4. - 5- 6.3M 6- 49K 7- 39K 8- 20K No whisker shorts on the "little black box" pins either; top, bottom, front or back. I use ChipKwik to get SMD IC's

Jim, IC5 resistance checks to ground 1- 10K 2- 107 ohms 3- 6.2M 4. -

QRP Labs QCX 40m CW transceiver kit for sale. This is Revision 4b, Assembly Manual (downloadable) 1.12. Also, Bamatech metal case Both unopened. Bought as a prospective project last year, but I never

Hi Guy Off Center Fed Dipole see http://hanssummers.com/404ul So. I got up early to enjoy the 0300Z QSX QSO Party session and at 0306Z the power cut. My UPS took over. I has a nice 40m QSO with Tore

Hans, What type of antenna are using? Regards, Guy WB7SZI

And lastly I remember why I didn't do it. There was some interference between the connector and the GPS pins.

I just looked at the data sheet for and RS- 232, DB9 and the holes are 25 mm apart, which i just measured on the case. I had quite a few but I bet many members of the group have them in their junk

9 pin serial port or use the cover plate as a stress relief for GPS leads. I used Dupont leads and the cover plate, but I'm looking around for connectors off old computers. Love to hear from others

Are there favorites for plug types connecting a GPS to the QCX tranceiver. Is the opening machined for a particular item? Best--Jim -- Jim, W7EZN 73!

Unless you are purposely making comparative readings on a single station, RST reports are nearly worthless. Basically, all I ever receive is 599 if they can copy what they need