Does anybody have a German source/link for the 20v required power supply including the correct plug. Many thanks Paul DJ0CU/G4ADF

History Guy video https://www.youtube.com/watch?v=8VF7FKrglo8&t=544s -- 73 KD8CGH

Hi, My QDX is working correctly, when I start it with 6V. I can turn it up to 9V and it continues working correctly. When I reset it with 9V I get no output: Pressing Transmit in the Test-Console doub

I've been trying to use my qdx on a raspberry pi 4b for a few weeks. WSJT-X works fine on the Pi on FT8 and JS8call. Fldigi not quite so easy. I followed along with Peter's notes but initially thought

...In my case I purchased a Lenovo ThinkPad, in the Summer, exclusively for use at my /P QTH but now seem to use it more and more often. I have just ordered a "Inovato Quadra" which I think will pair

Finally getting back to preparing for my first-ever balloon flight. On the tracking page of QRPLabs, I saw to my surprise that one of my U4B beacons was seen in the air a few months ago, although I ha

20m, 30m and 40m QCX Minis with their matching 50W amplifiers -- de Tony, EI5EM

Yes I’m a glutton for punishment…was thinking about getting a 50w amp kit and using the filter and torroid values published to see it will work on 160…anybody else tried to do this?

Does the latest release QDX firmware facilitate operation on 160m and is anyone using QDX there ? No doubt, some filters would need rearranging. 72, Bill, N4QA

Hello everyone I was finally able to get my mast up to construct a 40m EFHW. I have a number of questions about the antenna as it relates to the Mini, but I'll post that in another thread. My question

Hi! I am trying to understand loss of power on output on all waves: 80m drops from ~5w at T1 output to ~3.6w at antenna output. I know the loss itself is not a big deal, but I am curious to understand

Anyone have a recommendation, url link is helpful, for the QDX transceiver DC power supply? Thanks.

After assembling my 30M QCX Mini, the power output was only about 0.7 W. I verified the number of windings on L1-L4 and the turns were evenly spaced. I tried compressing the windings particularly L3 &

So I have not received my unit yet.. so take these questions as without hands-on knowledge... I am reading of issues with heat. Other than kludging together some way to transfer heat off the finals, w

Making progress on my QDX. I'm not getting any receiver audio output. In terminal mode, I can get audio when I run the audio sweep, RF sweep and image tests. I can configure WSJT-X (Mac OS) and Test C

I just started assembly of a qcx+ I just got. The manual (PCB 4 version) inventory shows: QTY 1 LM4562, 8-pin dual op-amp (IC5) qty 5 NE5532 8-pin dual op-amp (IC6-10) I have 5 LM4562 and 1 NE5532 (ba

I am planning to place a QDX connected to a Raspberry Pi 4 in a remote location (one of our mountain-top repeater sites) for the use of our club members. (I have read reports of the Rpi4 being inadequ

Has anyone got a 20 of 40m QCX Mini they'd like to swap for my 17m metre version? I built mine a few months ago but the drift on WSPR was too high. So I ordered the TCXO, which I fitted today. Zero dr

It's a long story, but I need to replace the EEPROM (IC6) on my version 4 QDX. The only problem is that I can't tell the proper orientation of the chip. Does the small notch on one end face the ARM pr

Is the QDX transceiver DC power center pin positive or negative? Thanks.