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you shouldn't limit yourself to that. ?I have been running qrp all year, and most of my contacts are easily in the -20 to -15 range. Anthony - N1IG

The email will tell you where and how it was shipped.? USPS was from US Warehouse.

I worked W0QU yesterday and I was -23 not even all the way across the US, ha, ha! There are at least three factors: you have to be able to be heard on the receiver end, the receiver has to choose to

I was gifted a QDX to build and decide to add reverse polarity protection as accidents do happen. It is simple to do, especially if a fresh build. 1. bend the +power tab on the back of the DC jack up.

No many/most is not all. As I'm here having my brekkie I just worked my best Q *DX* to date: -- John AE5X https://ae5x.blogspot.com

Hi John I agree, you are a lot more likely to work stations who have a higher SNR. But "many/most" is not "all"... so not exclusively so. If the other station is also running 5W too then it is

Come on 50329 ?? ? who am I kidding? Several projects need to clear the bench (and maybe new glasses) before the QDX

In the week or so I've been using the QDX it's become apparent to me that many/most ops are using power levels significantly higher than my 5 watts. I have too, in the past, with other rigs and will

Regarding the LM7809 regulator 'patch cord', I would recommend attaching a heat sink on it, too. During transmit, it needs to deliver just over 1 Amp current and that means its going to get quite

If you have a NanoVNA, it actually does pretty well as an accurate LC meter for uH L values unlike most LCR meters in zero span mode. Most commercial inductors and the winding equation used for

Robin, Is there some misunderstanding? My QDX needs around 8000 set in the configuration. One thing that I am currently investigating is the enumeration or initiation of the QDX. If I power it and

Karl Heinz, see /g/QRPLabs/message/74332 </g/QRPLabs/message/74332>. The audio level setting in QDX is a simple multiplier, and 500 is probably rather excessive for a

Hi Alan, I added the screenshot. not 79 but +10 to -75 quite similar also as of it's shape. 73. Alper TA2SUA

It's adjustable in the settings, it can be played with. Can't remember which menu offhand, as I'm not near qcx at this time.

This is my 20m chart, the scale is completely different from Evans'. Why? 73 Alan G4ZFQ

Do you get exactly the same 20m chart? With the scale on the left of it going from +10 to -79? I must test again with the latest firmware. I also measured, on a meter I trust. I also saw 38uH 73 Alan

I have very similar graphics to Evan's on rf sweep also. Connected to a 50 ohm dummy. For power output I had to squeze the LPF's a lot to get to somewere near 4w with 9v. While doing the squeezing I

syuji ota, in the years i have been reading all of the posts to [QRPLabs], yours is the most carefully constructed, informative and clear description of a problem and its solution that I have seen. If

Today I went into the console interface and turned on CAT logging so I can get some more data. @Karl, it looks normal there- the QDX starts up on an out of bounds frequency, I'm assuming so that it

Hello. everyone. My QDX(order #50315) arrived in Japan on November 8th. I assembled it immediately. And I checked the reception performance. The reception sensitivity is good for each band. Next, I