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Hi Richard, You have been unlucky if you have damaged the 7805 because it has internal short circuit protection. Does look like it is though! 73 Roger G4IUP

I just ordered another 7805. To be continued… Richard NS3C

Yes, I checked and reflowed the solders on both the PCB and the LCD. They seem OK. New problem: I had 2.8 volts between the pins of the regulator until I slipped and shorted them. That let a little

Hi Bill The backlight is powered via a series resistor from 12V. So as to not increase the power dissipation of the 7805 regulator. So your original post is still valid 73 Hans G0UPL

OOOOPS!? I just noticed you have nearly 5V at the backlight, so the regulator is probably working OK.? Check the solder connection of both the connector on the PCB and on the LCD module.? All OK??

Pin 2 of the LCD should have +5V on it.? Since it isn't there, the next logical place to look would be at the output of the +5V regulator.? With the numbers on the regulator facing you, what do you

I have one of each, as the 25-turn is proper for use with the 5W PA kit, and the bifilar is optimum for other use.? My intentions were to use one U3S for experimenting with the transistors and the

I have not seens anyone mentioned it but there is already an "official" qrp-labs facebook channel. https://www.facebook.com/QRPlabs/

The Keysight meter and old GenRad that I have always seem to match within reason. I don't know how either work but they are lab quality meters.? Same with the resistance measurement.? ?I think a

Hello, I just built the 80 meter version of the QCX and have a blank LCD: no blocks, just the backlight. With 12.7 volts input I see these voltages at the LCD pins: 1 0 2 2.08 3 2.08 (varies with R47

Will the new group lose content in the same way that messages eventually disappear from other Facebook groups?? If so, there is a loss of valuable accumulated knowledge that does not happen with

Group.io is great via the GUI. And neither do you have to sell your soul to Zuckerburg who will turn you into a marketable commodity whilst expecting YOU to prove who you are just to join in. If I

Erm, so you 've not used the groups.io GUI then ? Here we post photo's, view message threads, and even upload binary files in a repository. You should try it sometime ;-) 73 de Andy

Nobody is trying to "split" the present group, only trying to add a new more modern venue for fans and QRP enthusiasts.

Gentleman..... Go with the flow. An act of murder has not been committed, LOL. Dont like the group?.... Then dont join.. If there is no activity on the group it will die a lonely death. On the other

Former Facebook exec says social media is ripping apart societyhttps://www.theverge.com/2017/12/11/16761016/former-facebook-exec-ripping-apart-society

John, Check the stereo key jack. ?Sounds like one of the jack's connections are shorted to ground. Bill N7EU

Plus, even if you get a LOT of messages, is the delete click that hard to press? UG! Joe WB9SBD Sig The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com

Separate windings will work, if you make sure they are wound with the correct "sense". This is very important otherwise the detector and unwanted sideband cancellation don't work. The idea of the

I agree Lee but it is better than ploughing through stacks of reflector (yahoo or io) messages to simply find that, as I said, the subject matter of the original posting bears no relation to what has