Is it feasible to make real DX-contacts on the QDX digital transceiver?
Тәжірибелік нұсқаулар және стиль
QDX digital transceiver from the QRP Labs is a unique phenomena in the QRP community of Ham Radio. Featuring surprisingly high specs on receive, it puts out a clean, spurious-free 5W on transmit. It’s fully digital both on receive and transmit and can run all FSK modes (based on frequency shift, like FT8/FT4, RTTY and others, but no PSK31 though, which is based on the phase shift). The decoding power is such that this little radio easily decodes the weakest signals on HF bands. Watching all these weak signals on the waterfall of my WSJT-X app, I was curious if I could make any contact with those DX (distant) stations across the world? What I’ve found out experimenting on 20, 40 and 60m bands surprised me, and its in the video!
The equipment used was the QDX Digital transceiver from QRP-Labs, V.3, link to their site : qrp-labs.com/qdx.html
My full review of this transceiver is here:
• QDX Digital Transceive...
The very first Version 1 was reviewed, the current version on the market is V.5, but it’s the versions of the PCB with some schematic changes, but not of the radio itself. Version 1 still works as nice as Version 5.
The tiny Power/SWR meter is featured in my other video:
• The best ham radio acc...
My laptop PC is a CHUWI Minibook.
I hope, this short video will encourage you to try your own luck in hunting real DX stations on the HF bands running the QDX Digital transceiver!
I’d love your comments on your success in the comments section! Please consider subscribing, this will help this channel grow !
Have Fun! 72! 73! @Linas_LY2H
Пікірлер: 23
Yes, all modes are great. The most important is to enjoy the hobby; is to have fun. 73 and congratulations for your excellent videos!
hello! I really like your video, a few months ago I got my amateur radio license in Argentina, unfortunately it is very difficult to get HF equipment that has 100w, but I was lucky and got an ft818 and recently I made contact with Australia on qrp and using a vhf antenna with a 10m tuner, I liked it so much that I put the photos of that night in my qrz, Greetings and many thanks for showing the little QDX 73 from LU5OLA
@Linas_LY2H
9 ай бұрын
Congratulations Leandro and thanks for your comment! FT-818 is a great radio, I have, and still use its predecessor FT-817. I think, it would be great for you to complement your radio with one of these little 40-50W apmplifiers, like MiniPA-50, or MicroPA-50, they are available off Ali express and go good with the FT-817. But QRP is always the right way to go, anyway! CU on the bands! 73! 72! Linas LY2H
Thanks. I love FT8 & QRP
Thank you again for a wonderful video - it is very inspiring! A setup like yours would be great in the field - very light and portable. Thanks again!
@Linas_LY2H
Жыл бұрын
Field activations coming! CU! 73! Linas LY2H
Great jobb!!!
I’m running about 1.5 watts on 15 meters with my QDX (9 volt supply) and I’ve worked lots of 5,000 Km contacts! Cycle 25 is alive! 73 de ai4ot
@Linas_LY2H
Жыл бұрын
That's cool! Congrats! 73! Linas LY2H
Great results, is there a link to details of your antenna setup?
@Linas_LY2H
7 ай бұрын
Thanks! My antenna is all shown in the video :) It’s the most conventional full-size 80-10m EFHW antenna, with tiny compensation coil (makes work better on 20m and up, 5 turns on 40mm coil former, placed ~2m from the feedpoint, not critical) fed via the low loss 49:1 transformer from Myantennascom. HTH, 73! Linas LY2H
Love your videos. Are you still going to be running your external buck converter with the new board? I saw that qrp-labs includes an internal one. I noticed the documentation still allows 9 or 12 volts and still recommends no higher than 6 volts for the 12 volt version. I ordered the 9 volt version and it should be arriving soon. I have my buck converter ready for it. 73 Ro AI7PD
@Linas_LY2H
Жыл бұрын
Thanks Ro! Yes, I'm gonna be running my external buck converter, as it's still necessary to make one's mind up on the power supply voltage used, 9V or 12V. The internal buck converter, as I get it, is used for the sole purpose only- to produce a bias voltage necessary for the TX/RX/LPF switching in a more efficient manner enabling, thus, quite a substantial decrease in heat production on two resistors and the whole PCB, in fact. That's a very interesting and elegant solution and I'm looking forward to seeing it in action on my Hi-band Rev 5 board as soon as I complete the assembly! Wish you good luck and tons of fun with your new QDX! 73! Linas LY2H
@rohart6981
Жыл бұрын
@@Linas_LY2H Thanks for the reply. Looking forward to your review of rev 5. I'm hoping to get some DX with my QDX and maybe you'll see me on FT8. 73 Ro Hart AI7PD
Could you please sprell the name of your little Windows laptop. I hear "Chuee". Did you find it on AMAZON ? THANKS John KB7HNF
@Linas_LY2H
Жыл бұрын
Yes, it's CHUWI :) I think, I've been buying it directly from chuwi.com. Amazon might also have this brand, I'm not sure about the model, though.. HTH, 73! Linas LY2H
I dunno, FT8 sounds terrible buddy. Give me some sweet space ghost Winlink/VaraHF any day! Challenge accepted, I'm going to chase some FT8 DX with my QDX. Been using for some drive up POTA activations lately. I also picked up that swr/pwr meter too from one of your prior vids = legit, I like it. K0ATV
Slava Ukraini ! 73
Hy OM Lynas, thank you for reporting my uSDX 5 Watt, de YC0SJA
@Linas_LY2H
Жыл бұрын
Hello OM Gajah! That's just fantastic- we had a QRP-QRP contact! Thanks for telling this! Your uSDX is doing a great job! 72! 73! Linas LY2H
F4WBN from VK5/SE-010 on 10m CW SOTA QSO. vk5cz ..