开云体育

Evan, Since my L12 isn't installed yet, rewinding with more turns would be easier than changing out capacitors... Either way, that's why I'm asking about how bad 17M looks by changing BPF to 1 from

With my build is was the same. It now a paperweight and what rests is the building pleasure but very pity that the short on the supply board destroyed the mcu and although this was is a factory fault

Hi ! I just played a few hours with the QMX and beat my Laptop into submission. (Only falling back to stone-age OmniRig made the CAT interface work. Otherwise only dodgy Hamlib errors.) I have

A typical screen shot from NA5Y's? spiel on DSP work on SSB is attached. As you can see he does not cheap out with bench instrumentation. The little flag on his? site photo is the famous Miner's

Re recent post on? old ARRL SSB phase shifting design - I? ?found the following? video with plenty of technical references that does just what is wanted? for Audio signal processing to generate

Hello, Please read the post below http://qrp-labs.com/newsjul2020.html#c3 So, in a nutshell, "when it's done" :-) but some building blocks are already functional (the 10W linear amp, the QMX

Hi Nate, You could try adding 10pF parallel to C30 (or replace it with a 46pF) and see if that pulls the 17-meter center too low.? For me, it is easier to mod the capacitance than the

Hi Eric, I would use the smaller of the two.? The QMX board is very tight on space, and the current requirement is less than 50ma (30 on the Band Configuration screen).? The resistance difference

I'm a new subscriber/old timer. Can anyone advise what has happened to the QSX all band, 10 watt project? Last mention of it on QRP Labs website is 2021.

for those who are desperate !! for some development work to do - both the basic? HW and? firmware have already been developed to create? SSB HF from? the ARM Corex? M4 type processor (in general)

I really didn't want this to be my first post to this forum, but things happen.? Despite Hans' warning in the video, I snapped one of the QMX's 47uH inductors in half.? I see a couple of parts at

I'm also interested in 40 and below option. Key bands being 40, 30 and 20 for me. Just learned about this rig so lots of learning for me to do to figure out how easy it is to modify.

Thanks, Don! Good to see these! Interesting...all about 2 mhz wide at the very peak, and maybe closer to 4 mhz at -3db down on either side for most bands. Hard to know how much of the right side

Hi Mushin, I think it's not the same topic. I'm not about rounding the number of turns. 73 Ludwig

Jakob, I also suspect CMC after another issue was resolved- see /g/QRPLabs/message/117215 ( /g/QRPLabs/message/117215 ) thread. I was using a base loaded vertical

I'm running 1.10 firmware on both radios. Here are the sweeps across all of the bands for the High Band QDX: Don KD5NRO

Hi Barb WB2CBA is the group maybe he can help? 73 de muhsin TA1MHS

Very low power indicated on all bands while SWR was high on 80 meters tapering to none on 20 into a dummy load! Power was 4-5 watts by measuring voltage at the dummy load. My interim solution is to

Don or Matt, Are you able to post a 15M RF sweep or all of the RF sweeps? 20/17/15/12/10? I'm wondering if one could add 2-3 turns to L12 for 20M, but use the 15M BPF on 17M (instead of 17 and 20m

The hardware device is no longer being sold. Gary W9TD