(tr)uSDX Hiking - with ultra low profile - PART 2

[@ElFranches]

I've never in my life seen one of these, KZbin randomly recommended this video and now I'm deep diving into this topic. Great channel & video!

[@dorin.dumitru]

Carefully, this is very dangerous !!! This kind of things made me dependent 4y ago and mad me get a ham radio license around 3 years back :))) P.S.: I never regretted afterwards. A wonderful hobby.

[@drewrinella1646]

This is the way.

[@stevet7522]

Sooooo... How did that dive go?

[@prephampaul]

Hilarious begining! I'm in the process of getting my uSDX up and running with the smallest profile. Great video!

[@dxexplorer]

The beginning was priceless hahaha. I thought you've seen a snake or something at first 😅😅😅 The toroid is small indeed. I tried that too and a friend of mine tested it and was heating as well. Now I increased the size to a 140-43 that I put in a nice enclosure made from PVC pipe material. I will test it on the (tr)uSDX and hopefully there will be no more issues. Glad you made a QSO at least. 73 and have an amazing and productive week.

[@thequarantinecatholic]

I am a new subscriber, just discovered the radio and will probably be purchasing it, you are a great Elmer!!! Great sense of humor!!

[@QRPGUY]

This is one of my all time favorite QRP videos. Just a radio and a wire. Thanks K7WHN

[@dl2man]

2 years ago and aged well :) Thanks for your kind words ! This videos was driven by my walk of shame in Video 1 - recorded 1 day before. But the good thing about walking is: You have time to think, so it was all planned out, when I reached my car back home. 73 Manuel; DL2MAN

[@raykiii]

I liked your joke. It made me laugh. One beer is a good start to your celebration, I hope you stopped on the way home and had another. Thank you for sharing. 73

[@dl2man]

Thanks a lot. Trust me, I have a lot of beer, but on this ocassion not before I drove home and had my car in the garage. Cheers ! 73 Manuel; DL2MAN

[@brianclimbs1509]

You have such a great attitude. I look forward to getting one of these one day for some mountaintop radio.

[@jankersten6212]

15:18 I'm just learning CW and this video was very interesting for me. Thanks from the Netherlands

[@Derrick6162]

Enjoyed. I'd like to get one of those radios when I can afford it. Thanks for sharing. 👍👍

[@TheDroopYJ]

Himbeere is Raspberry (raz-bere) in English. Very tasty treat, not often in the wild in the US. Typically, brombeere (black berry) is found in the wild. Still a tasty treat. Sadly, my (tr)uSDX was lost on a recent trip. I hope to replace it soon.

[@PaulStrickland]

Loganberry?

[@DK5JL]

I enjoyed this video 😃 and expected an orange mushroom in the grass of bavarian forest 😅 during first seconds. It‘s really interesting to follow your videos on KZbin and I learnt a lot especially about antennas 👍 from you, looking forward to your next videos ✅, 73‘s DK5JL

[@gunterkonig959]

You are doing a nice job, dear Manuel. I am using for the EFHW transformer a FT-82-43. There is lower power loss. 73 and have fun! DJ8CY

[@John_Smith__]

Awsome radio thanks for your work and for sharing the project ... and the walk over the woods is great 😀😀 I wish the nearby forest where I live would also have some of those Rare Species of (tru)SDX's ... I'm always on the lookout to see if I can find one but to no avail ... they are Rare and also very shy on the woods ... 😀😀

[@frankamato8886]

Congratulations, Manuel! Great video! Hopefully those little orange critters hiding in the brush won’t be a rare species much longer! Good work and enjoy the beer! 73. WA4ITD

[@phildurall7466]

AND THAT'S THE WAY IT'S DONE FOLKS! Nice job Manuel! Those berries and drink looked yummy Sir! 73 - KF6IF

[@Majorme2]

I’m excited about getting my sdx on the air.. I’m not licensed as of today..but soon…. Thanks for your videos..and yes by all means enjoy that beer…

[@KO4FFB]

This is my next radio purchase and I’m looking forward to my outdoor adventures with it !

[@mikemiles3068]

Nice video and better results than yesterday, my little QRP IS XIEGU X5105 and QCX Mini and i do make all my own UNUN’s 49 /1 and 64 /1 are my favorite. 73 from South East Texas KV5P

[@gordonmiller4439]

I came to your channel on recommendation from the DX Explorer/Ciprian! 73 de Gordon

[@zanado11]

I love my (tr)u SDX. I received it a few weeks ago. A first I was skeptical the receive wasn’t very good but finally had one station responded back. I connected a small end fed antenna Saturday and to my surprise, signals reception improved. Every POTA station I attempted to make contact with replied back with RST’s of 43 to 54 SSB and one CW contact 559. I am a believer. Thank you for a grant little radio. 73 de Roger W8RLP

[@gymntonic]

The bottom mounted battery pack is *really* nice!

[@dl2man]

Just uploaded the files here: www.printables.com/model/103619-housing-for-trusdx-qrp-transceiver

[@maxmeranda]

Great video! Both videos were good--thanks for making the effort. Fantastic little radio. I can't get out with mine yet, so I like to see it in action. Cheers from Australia--the land where we can't afford radios!

[@yt5bos]

With such a short coax you need a counterpoise for the EFHW to get more efficiency from your antenna. So, either use a longer coax cable (a few meters) or ad a counterpoise of at least 0.05 lambda. In my experience and testing, having both a longer cable (than what you had connected to the (tr)uSDX) and counterpoise lowers the SWR additionally. Try those options the next time you are doing portable. Anyways, great video.

[@dl2man]

I know. I commented the same under K6ARK´s Video. I did it anyway wrong, as I wanted to know if it works. I have a good EFHW (Homebrew) here, waiting for the next Video. But I really wanted to try absolute minimum.... I appreciate your comment anyway, as everyone should learn that. Thank you. 73 Manuel; DL2MAN

[@rfdave3980]

Wow little Orange box is beautiful. Is that poison ivy I see just to the left. Don't touch it. The forest fruit looks like Raspberry. Thanks for the outdoor adventure

[@loughkb]

Those berries looked like what we call Raspberry.

[@bradenglettkd8zm69]

Manuel, I enjoyed listening to the CW conversations, although you only included a small part of them. I am making dozens of contacts all over our country with the tr(u)sdx here in Ohio (USA) using wire antennas and having great fun. I just ordered another one from Sunny. Great work!

[@dl2man]

Hi Braden, thanks. I enjoy that too, but unfortunately vast majority would be bored by a full CW QSO. I kind of get that, it´s like watching a movie in a foreign language..... Hope to meet you on Band for a CW QSO (tr)uSDX to (tr)uSDX ;) 73 Manuel; DL2MAN

[@willian.direction6740]

Great outing Hans its great to see you out in the field putting all your good work into practice. I found the small core got a bit hot on the one I made as well. Regards vk5cz ..

[@reym1000]

Cheers to that Manuel. TruSDX rocks. Thanks

[@haramanggapuja]

Better showing this time than the first one, for sure. The new battery pack & radio bottom are really nice. I'll have to see if I can finagle one of those from my 3D printing friends ;-) Pretty neat QSO with Italy. (Piero Begali now has his own (tr)uSDX . . . Maybe you can catch him on the air some day.) Also your previous comments about being out in nature are right on. I'd be out there in the woods right now but I have to wait another two weeks until I can test negative for the plague. And then my doctor wants to bother me with more tests. Thanks for the excellent video. Stay safe & well, my friend. 73 de W8IJN

[@dl2man]

Just uploaded the Batery Cover Files here: www.printables.com/model/103619-housing-for-trusdx-qrp-transceiver

[@VA3OSO]

Thank you for sharing the 3d files. The 3x 18650s are the perfect size for this radio and there are plenty of 18650s to recycle!

[@PauloFerreira-dm6cv]

Agradeço seu video e explanações, esse assunto é interessante e muito importante.

[@smellthecoffee5314]

Nice video - love my truSDX

[@StreakyP]

Fantastic set-up you have there. For fine antenna support string it is also worth checking out 100lb braided fishing line (cheap as chips & you can get it in inconspicuous green). Be careful with the hot core, they quickly go non-linear & your harmonics can shoot way up (there is a youtube video quantifying this problem... unexpectedly into FCC spectral fail territory with little warning).

[@dl2man]

I´ve heard about that video, but the premise alone is false. It´s not a part of the Antenna, that heats up and creates harmonics ! If that happens, your transceiver had a harmonic suppression issue in the first place.

[@StreakyP]

@@dl2man are you sure that is right. Your TX can be "as clean as a whistle" but if the non-linearities occur after the TX lpf you can still get harmonics and spurii radiated. The "rusty bolt effect" is a classic example of this. Things would be very easy to verify (even without a calibrated spectrum analyser).. simply tx a straight CW carrier which should be a pure sine wave and stick an oscilloscopes probe on the base of the antenna (ok with a voltage divider to get the voltage into the range of the scope).. if the saturation and non-linearity show any "flat topping" or other distortion away from the pure sine wave it shows that there are harmonics there an they are being radiated

[@johnwest7993]

:) Great start! Looks like raspberries.

[@dl2man]

Raspberries.... I should have known that. Thanks ! 73 Manuel; DL2MAN

[@jertres2887]

Like rapsberry pi!

[@mikestokes235]

At least today you made a contact, nice! Great effort. 73 de Mike GM4HCY

[@hillbilly4christ638]

Raspberry’s for the red ones and blackberries for the dark purple ones. Some are even golden in color.

[@kokohenker9439]

In Welchen Wald warst du? da gehe ich dann auch mal hin wenn die (tr)uSDX da im Grass lauern ;) immernoch ein schönes gerät

[@aandscrawfoski]

Hi Manuel, looks like your nearest thing to a Ham HF cell phone is working well. I want one. Nice interactive video. Andrew NZ

[@ai5dd]

the Hindberry name in English is Raspberry or wild Raspberry. Good operators will slow down for other stations, and full name words not commonly used are harder to understand, I prefer common CW abbreviations.

[@123chrispotter]

Great work! Perfect proof of concept.

[@eduardogarciamontesdeoca5935]

The fruit looks like a raspberry… about your battery holder, it’s pretty interesting and practical. I’ll do mine for a 3 cell 14500 battery pack, but 4 cell also works, and the advantage of 14500 is that you can use normal AA batteries with 4 cell for something similar to feed the rig with 5v

[@dl2man]

I´m sorry, 5V fed through main Power Supply won´t work, as 7805 will refuse to pass 5V through. 5V only possible via USB Port.

[@dl8cy]

2:22 You don't know that tiny computer from UK named after that fruit?

[@dl2man]

very true..... I should have known that it´s being called a raspberry. Be gentle with me ;) I have no script, just filming what I see, and trying to keep it real.... 73 Manuel; DL2MAN

[@matthiasjahn5761]

Gutes Video allerdings auf englisch, hab aber trotzdem alles verstanden . An die Halbwelle hätte ich bei der geringen Leistung des TRX noch ein Piktel von 0,05 Lambda als Gegengewicht angebracht das erhöht den Wirkungsgrad der A. So Senftube wieder zu Grüße aus dem Harz

[@rc3dr]

I am on my 3rd one now and you did a great job on it... lots of fun except for warm beer ???

[@dl2man]

Warm Beer ? No.... Went from the fridge into my bag right before I left. Was still cool, when I opened it. I said, I would be prepared ;) 73 Manuel; DL2MAN

[@aramb]

Keeping it real - thank you!

[@aramb]

According to the USPS, the (tr)uSDX I ordered is arriving today!

[@bodoger]

The berries are called Raspberries in the USA

[@darrentilley9495]

Wow! Great video , are these available in the UK?

[@RobertWardJones]

Enjoyable video. Fun to watch you enjoying your creation. Also we call them 2:10 Raspberries. The same berry that the Raspberry Pi was named after. They grow wild along a hiking trail I like frequent along the Sacramento River. They are eatable now here too. The battery case at 4:40 is different than the one on aliexpress. Will the new version be offered as well?

[@dl2man]

The Battery Case on ALiExpress was created by DL1DN. He sold it exclusively to our SUpplier, so no files are Available. My Design is available to print for everyone. www.printables.com/model/103619-housing-for-trusdx-qrp-transceiver I don´t know if Sunny will provide it. She (or anyone else) is free to print and sell it. 73 Manuel; DL2MAN

[@lasantiagoa]

Loved the joke. Well done. I'll be uploading a video with a magloop plus the (tr)uSDX. Coming soon 73 de Luis, HB9HJU

[@dl2man]

Looking forward to it !

[@DcyChng]

Cool setup...Possible to share your pocket Ant spec ? Where you get your battery case from?

[@dl2man]

Just uploaded it here: www.printables.com/model/103619-housing-for-trusdx-qrp-transceiver. Antenna Specs are made "by Hand", it´s a simple 1:49 UnUn with abt. 20m of 0,4mm Copper Enamel Wire. I would not encourage you to build that one exactly, as the core losses are quite severe. I´m going to make another Video soon, of how to build a decent EFHW. 73 Manuel; DL2MAN

[@DcyChng]

Thanks for sharing..73

[@DcyChng]

@@dl2man waiting for your new video soon... Thanks

[@MrVertigo1971]

Great idea, great video! Are you going to release the STL files for the newly created battery holder to the public? Tnx

[@dl2man]

Sure, I will upload it in the next few days. 73 Manuel; DL2MAN Update: Available here: www.printables.com/model/103619-housing-for-trusdx-qrp-transceiver

[@garrett798]

hopefully the Mistkäfer was not trying to tell you something about your transceiver.

[@apburner]

I'm hoping my wife will get me one for fathers day on Sunday.

[@swanny1982]

is the STL File avaliable for the battery and rear cover ?? TIA

[@dl2man]

Just uploaded it here: www.printables.com/model/103619-housing-for-trusdx-qrp-transceiver

[@mt8385]

Die Antenne sieht sehr interessant aus, gibt's hierzu eine Wickelanleitung für den unun?

[@dl2man]

kzbin.info/www/bejne/aF6Xe2t7eNCim5Y

[@juliocaesarramos5250]

Please, could You show us the transformer schemstic? 73 PU2AOO

[@dl2man]

I don´t actually have a schematic. It´s a simple 1:49 UnUn. Put that phrase in youtube search and you´ll find plenty of Videos showing how it´s being done. If there´s more specific questions, please let me know, and I will try to answer that for you. 73 Manuel, DL2MAN

[@juliocaesarramos5250]

@@dl2man Thank You so much. 73

[@Majorme2]

I seriously thinking of your sdx as my first radio. I’m absolutely new to CW ..your thoughts

[@dl2man]

It can also do SSB. But I can tell you: It works as intended. It receives and transmits, while focus was on low power consumption and high efficiency. If it´s a good first shortwave radio ? No Idea. But I would have loved something like this in my youth with those features and at that price point. 73 Manuel; DL2MAN

[@Majorme2]

@@dl2man I think as a beginner in CW it’s not a lot $$ to start….thanks for your input

[@DL1GKC]

You deserved your beer. 👍🏻

[@dewil23]

Next up some SSB videos?

[@dl2man]

I´m not into SSB so much, but it would be interesting for sure. The benefit of CW however is, that I could make that contact under those bad conditions, which was not possible on SSB. It´s a matter of energy density: While my 3W of CW are foused on one point (like a laser) SSB is seperating those 3W on 2,4Khz Bandwidth. So before that can happen, I need to build a portable ANtenna without those losses, to get out the full 3W. 73 Manuel; DL2MAN

[@SirWolfCZ]

As far as I admire CW, I didn't manage to learn it yet, so I'm still confined to the SSB parts of the bands. And I can tell you, (tr)uSDX is a blessing even for SSB. Last time I managed to score some nice QSOs to a few different European countries when I was on a business trip in Switzerland and had two hours of time and a meadow with a tree in the middle of it, not far from my hotel. And of course my trusty (tr)uSDX and a few meters of thin enameled wire and unun. I faced the same problems as Manuel in this video, I couldn't hang the antenna high enough and I had no counterweight, but I still managed to make some nice SSB QSOs.

[@amardzuho3039]

Hello Manuel, is that FT50-43 core ? I planning to make QRP EFHW antenna, and I buy some FT50-43 cores, so as You said core is getting pretty hot after using, can I reduce core warming by adding 2 cores on transformer, and to get more efficiency ?? 73

[@dl2man]

Please check my other Videos. There has been a whole seires about EFHW, and a whole Video about finding the right core size ;) Have fun. 73 Manuel; DL2MAN

[@induh_game_like_ea2037]

What is the link for the pocket antenna

[@AppsAccount-r7d]

cool - thanks for the video

[@brucecorbettn9bh398]

I understand the trusdx has a general coverage receiver. Have you tried it?

[@dl2man]

I am one of the 2 Developers. The Serial Resonance Class E Circuit will attenuate outside of Band, But you can still receive. 73 Manuel; DL2MAN

[@brucecorbettn9bh398]

@@dl2man I found out you are one of the developers as I’m working my way back through your videos. I may have said too few words in an earlier comment to you. The berries you were eating look like Red Raspberries.

[@FoxtrotMike]

I thought you saw a Weizen! hahah

[@oncomics1128]

Raspberry?

[@attilarivera]

11:40 yeah the accent.. german accent . Wow.. it is sO useful in case of an alien invasion.. vide "independence day". 🤣🤣🤣🤣🤣

[@QRP.lifestyle]

Well done but try other places without trees. A lot more contacts are possible. It helps a lot- Trust me 😉

[@dl2man]

Thanks David. Very good advise !

[@terry2351]

Himbeere name in English = Raspberry (und sie sind auch LECKER!)

[@K2PMD]

Awesome.😂

[@BertClaes]

wonderful!!!

[@brucecorbettn9bh398]

They look like red raspberries.

[@porkyfedwell]

Raspberries.

[@gilgsn]

You'll get better results with a FT-82-43..

[@dl2man]

Very old Video, Gil.... I have plenty on that topic later. 73 Manuel; DL2MAN

[@oncomics1128]

oh man! that was funny!

[@ol2tmx6916]

The english word is RASPERRY

[@PD1MM]

😂 73 pd1mm

[@92fsoakcreek]

raspberry

[@CrittendenIV]

You rule, DL2MAN! :) KJ7NUX

[@pu3ykwmqrafabio207]

73 de Pu3Ykw/M 🚐📻🗼

[@UB6HJO]

Very fast speed on cw! Respect, 👍73 de UB6HJO!

[@dl2man]

The real respect goes to IN3EBZ. He´s the high speed guy... And when I replied to him, way slower than he sent his CQ, he immediately turned down speed for me. Ham Spirit at it´s finest. And just to mention: I initially got 2 out of 6 letters wrong from his callsign IN2EBD -> IN3EBZ. Got it right, when he slowed down. But thanks. I think, I am taking 25 wpm for granted nowadays.... That is fast, compared to where I´ve started ! Every decent HAM will lower his speed, when you reply slower. 73 Manuel; DL2MAN