It's tiny and the performance is... Amazing! I really like the build, very compact with the bias T. Beautiful scenery too! 73 DE SV2TCB
@berndg42Күн бұрын
This radio uses a passive filter like this: kzbin.info/www/bejne/fHrbqJ-vhN9nmKc
@dxexplorerКүн бұрын
Sounds fantastic. I love it.
@AdamSWLКүн бұрын
Love your project! Construction very nicely done! Hope you had a good Birthday!
@dxexplorerКүн бұрын
Thank you so much Adam. Ohhh I can't wait to get home. The package with the PCB boards arrived while I am away so I can build the final and "fancy" version 😁😁.
@AdamSWLКүн бұрын
@@dxexplorer Nice!! looking forward to seeing it and how it compares to your original version!
@azarellediaz48922 күн бұрын
Did you ever get around to making the blog post for this antenna? You never provided the link to where you got your data to build it.
@dxexplorer2 күн бұрын
Almost yes. I have half of it written and I was working on the drawings and details. I will finish it once I get home as I will also make a new video as well since I am planning to build one more that weights less.
@S21MEV3 күн бұрын
Are you staying there till JOTAJOTI?
@dxexplorer3 күн бұрын
I go home this Friday. I come back but not sure when. Maybe the end of the month.
@ralphthebrick3 күн бұрын
I would love to see the performance on your Camper van roof
@dxexplorer3 күн бұрын
I tested that in the part two of the series.. a video or two back. It didn't perform as great as this time. Maybe the propagation was not the best also.
@4L1LAT3 күн бұрын
its working great... i dont think original 2n5109 will change anything . whats more importent is that you are in a very good place😄 location is amazing very beautiful😍. ham radio and place like that is very refreshing
@dxexplorer3 күн бұрын
The location for me is more like heaven on earth. Sadly I must return home at the end of this week after three weeks spent here. But... I will return 😅😅😅
@4L1LAT3 күн бұрын
@@dxexplorer I really like place. free from everyone and everything. from civilization 🤣😁. good luck buddy
@dxexplorer3 күн бұрын
@4L1LAT only me and the bear here 😅😅😅
@RechargeableLithium3 күн бұрын
Ukrainian operators are off the air due to the war. Thanks for the Mini Whip demo - I have one in a box but still haven't powered it up. 73
@dxexplorer3 күн бұрын
I hear them all the time especially on the 40m band. Maybe some of them but there are many still on air. I am also exited to get home and build the final version with the PCB boards I just received 😁😁. 73, YO6DXE
@Hiram88664 күн бұрын
It looks lovely there. I am interested in the performance of the mini whip. Although I may have to go down the amplified small loop due to local noise.
@dxexplorer4 күн бұрын
I really have to try building a loop as well. I never tried one.
@Alex-M0OOV4 күн бұрын
Great video, I'd move to see more, even a full QSO at some point. I use an ungrounded dipole on 10 M and and ungrounded EFHW on 20M in my balcony and I hear plenty of signals so it can work. I hope you were joking about the weather impacting HF receive though :) Looking forward to the next video. I'll be in Brasov at the end of Oct. visiting my aunt.
@dxexplorer4 күн бұрын
When we finish the radio room here, I have a feeling you will see a lot of QSO's from here 😁. About the rain and the conditions on propagation... ohhh no I was not joking at all. I think is because in here is like I am in a pot all shrouded by mountains or something, because when it rains even the phone signal is extremely bad. One network dissapears completely. The EFHW barely receives something as well. Not sure why but it is what it is. Maybe the radio waves are scared of the bears we have around here haha. I will be back in Brasov at the end of this week and stay home for a while so maybe we get to meet. We keep in touch. Have a fantastic rest of the week. I get back to work here so we finish the roof before I leave. 73, YO6DXE
@Chems73084 күн бұрын
Nice performance in a compact size
@dxexplorer4 күн бұрын
Perfect for this place as we must hide it in the attic to keep the place same as it was but still have a bit of radio fun 😅😅😅.
@abicabiban33954 күн бұрын
Hearing mostly hiss and some faint signals is considered an interesting result???
@dxexplorer4 күн бұрын
If you understand propagation and the fact that technically with the conditions I had I expected to hear nothing... indeed it was interesting results to me. The hiss was mostly on the 40m band... on 20m it was full of signals.
@cojo_14 күн бұрын
Stop hateing....
@2metercrew3894 күн бұрын
👍🏽👍🏽👍🏽
@dxexplorer4 күн бұрын
🙏🙏 thanks so much for watching. I can't wait to build the final "fancy" version. 73, YO6DXE
@bullthrush4 күн бұрын
Good performance for a very small antenna.
@dxexplorer4 күн бұрын
Indeed. I switched to the EFHW really quick after I stopped filming and it was nearly equal. I did not expect that at all considering that I am surrounded by mountains.
@MakingRadioWaves4 күн бұрын
Seems to be working, be nice for the next video to do a comparison with the endfed on a coax switch to see how the signals compares to each other. Believe the first CW station was I8GMG calling CQ DX. Well done and great job! 73 Jason
@dxexplorer4 күн бұрын
I didn't had the chance to film as we were rushing to the city so I can edit and upload the video but I listened on the EFHW as well for a bit and the Mini Whip was nearly equal. I was not expecting that 😁😁😅😅. 73 and have a fantastic week Jason.
@N5OLA4 күн бұрын
I saw your video last night. Today I built a prototype, inspired by yours. It's up about 12 feet off the ground, two raised radials. First QSO was 2000 miles from my QTH, good reports. I think it's got better gain than my Cushcraft. kzbin.info/www/bejne/poWUi4hqjLyMh6s Thanks for posting
@pd1jdw6304 күн бұрын
Sounds good. Nice place though. 👍🏻 Have fun! Also I might have a j310 I’ll look for it.
@dxexplorer4 күн бұрын
Thanks so much. Amazing place indeed in here. I found a website that sells both transistors before I left home, so I will order a few once I get home. 73 buddy.
@pd1jdw6304 күн бұрын
@@dxexplorer i don’t think it’ll make a lot of a difference. But now I’m curious.
@dxexplorer4 күн бұрын
I am also curious. On the JFET I think it won't be such a difference as J310 can be replaced easily with other similar ones, but the NPN I have a feeling it will perform better because the antenna should resonate better on lower frequencies as well. We will see )))
@heinzriedl68684 күн бұрын
Hi DX Explorer -thanks for your Video - if possible try to get a very good GND direct at the Feedpoint of the Antenne and the Signals will blow you away....- The Key of good operating is enough height, out of any QRM done by TV, PC, LED Lamps etc. and a very good GND maybe with not less than 4mm2 of Wire direct to a good Earth at the Bottom of the Mast! - Dont ground the Coax on the Way to your house a second Time! . Heard many rare DX Stations with my Mini Whip on a 10 Meters tall PVC Mast connected to GND Wire, vy 55, 73 Heinz DE0RST
@dxexplorer4 күн бұрын
Ohhhh thank you so much. I very much appreciate the advice. I will do it this way on the final instalation once we finish building the radio room. I will still have to hide it in the attic, but with a good ground I have a feeling it will work way better than now. Even though I am happy even the way it works now. I was not expecting it to work so well. Luckily here on top of the mountains there is not much interference from anything as besides the lights and the phone chargers there is nothing else here. 73, YO6DXE
@heinzriedl68684 күн бұрын
Hi friend, yes this could improve receipton very much. If you want to compare sigs you can listen to WEB SDR Station operating with Mini Whip. If you listen to the WEB SDR Radio from University in Twente (Netherlands). (Google) They are operating with Mini Whip as you surely know? Another way to get more gain of the Transistor could be to connect two of them in Parallel. That should increase the Signal Strength also.... vy 55, Heinz, DE0RST
@dxexplorer4 күн бұрын
@heinzriedl6868 Ohhhhh the trick with the tranzistor i didn't know. Is it the JFET or the NPN ? I guess the JFET since the NPN is there just to lower the impedance. And yes if course I know about the SDR in Holland. Is the one I use for most of my tests as reference 😁😁.
@heinzriedl68684 күн бұрын
Its the JFET which could be parallel connected. If you have no success with that please send me a note and I will send you J310 for experiments 😀 @@dxexplorer
@dxexplorer4 күн бұрын
@heinzriedl6868 Thank you so much. Ohh I will order the transistors when I get home. I found a store that has them in stock still. I really appreciate the help. Time to experiment a little more when I get home hahaha. 73, YO6DXE. Bed time here as in the morning, back on roofing work to finish here 😅😅😅
@uli_68304 күн бұрын
Hello, I ordered the board for the MiniWhip from PCBWay. Everything arrived safely. The order of the individual components on the board does not correspond to the order you have specified in the circuit diagram. How should I proceed? I had rebuilt the Whip (with a self-made board) as you showed it in the video and it works. Now I want to put it together on the finished design and I'm at a bit of a loss. Maybe you can help me. I would be delighted
@dxexplorer4 күн бұрын
The schematic in the video was the original one I downloaded. I made a new one that is on the same page where you found the PCB board you ordered somewhere on the bottom of the page. That one should correspond to the PCB board. Let me know if its all good.
@uli_68304 күн бұрын
@@dxexplorer Thank you! I've found it. Now I can tinker. I'll let you know how it works!
@dxexplorer4 күн бұрын
@uli_6830 Always a pleasure. Excellent then... let me know how it works. I am up in the mountains now but I was told my package has arrived so I will also build a final version when I get home. Meanwhile I will try to also find the original transistors. I just installed the one I made in the older videos here in the scouts camp. Seems to work like a charm so far. I will upload a video later on this evening if internet helps me 😅😅. 73, YO6DXE
@uli_683023 сағат бұрын
@@dxexplorerHello, I have now completed 2 units with the original circuit board. Both work very well. I am currently testing them against my MLA-30+. I have set up one Whip approx. 1.5m above the roof and one under the roof hatch. I have attached a counterweight to the outer conductor so that there is at least some earthing. The house has a total height of approx. 13 m. So there is not much difference between the Mini Whip installed above the roof and the one under the roof. The Whip is superior to the MLA-30+, especially in the LW and MW range. On shortwave, the MLA-30+ is slightly better, especially as the directional effect allows you to block out interference. I use the bias T from the MLA-30+ for the Whip. This supplies 12V. However, I have ordered a separate bias T from Ali. But maybe I'll build one according to your instructions. I have to praise PCBWay. Impeccable quality and fast delivery at a very good price. I can also recommend a Youloop or a Magnetic Loop (I have made a few myself) as receiving antennas, especially for difficult reception conditions or indoor operation. I use both with a preamplifier (50Khz - 6Ghz). Greetings! Translated with www.DeepL.com/Translator (free version)
@nine72956 күн бұрын
The old school way to find local repeaters is to scan the band and hopefully you catch an ID or some activities.
@dxexplorer6 күн бұрын
Good idea. That I didn't try. But meanwhile I managed to change my phone number to some other network and I finally have internet. No too fast, but its better than nothing. 😅
@multilecful6 күн бұрын
21:04 Surely, if you ask the bear nicely? 😮 If you program in Chanel mode surely it will stay the same. Try program in frequency mode and see if it changes.
@dxexplorer6 күн бұрын
I must ask the bear haha. I managed to change phone numbers. Using another network now and I finally have internet. Not too good but its better than nothing. You are right... let me try programing it in frequency mode. That may be the issue. 73 Nigel and greetings from Cioclovina. P.S. it only took me two days to upload this video 😅
@Chems73086 күн бұрын
Nice and cute model
@dxexplorer6 күн бұрын
It reminds me of the simplicity of the Baofeng, except that this one is WAY better 😃😃😃. 73 my friend.
@matthewt-ty336 күн бұрын
It's mind's me of the baofang uv3r
@dxexplorer6 күн бұрын
@matthewt-ty33 I never had that one. I like it because it's really simple a kind of straight to the point. Easy to set up and use. And the most is that it actually has the power as per the technical description and on harmonics suppression it's perfect.
@francksylene15606 күн бұрын
i have an old decametric tranceiver with his extrenal power supply... Near 1960 i think, i must try to restore it but not now...
@dxexplorer6 күн бұрын
Woaaaaaa. Those are nice to bring back to life for sure.
@francksylene15606 күн бұрын
@@dxexplorer Yes, it's great because all yjese old tranceivers are good systems. I have so many CB tranceivers like xtals 6 channels, and a very old tranceiver headkit with its external power supply, non fonctionnal bot able tu be restored. I love this old tranceivers. New items are not so good...
@dxexplorer6 күн бұрын
@francksylene1560 i also love old school stuff... all analogical. The new equipment its nice too... but it feels like I don't have so much joy as using an older one.
@francksylene15605 күн бұрын
@@dxexplorer I'm ok for that, all my tranceivers are vintage ans analogic... And alwais a pleasure to use it. I dislike strongly new CB tranceivers with digital electronic circuits as tje SDR. Old CB are ok after 50 years, but in the future, digital tranceivers wont be ok after 20 25 years... This is the problem of digital technology and low cost components used in the new tranceivers...
@dxexplorer5 күн бұрын
@francksylene1560 I totally agree with you. That is why I am so much into older stuff. I always say... old is gold 😁
@عبدهسا7 күн бұрын
,جهاز الددبات نوع الشركه ارسل لي صوره
@dxexplorer7 күн бұрын
I don't really understand the company type part 😁😁. A picture of ? The receiver ? I have a few on the blog article about the receiver.
@عبدهسا7 күн бұрын
ممتاز
@russellroberts22288 күн бұрын
Great antenna that is easy-to-build and modify for your favorite ham radio band. I have a similar antenna for the 40 meter band, and it works very well. Aloha es 73 de Russ (KH6JRM).
@dxexplorer7 күн бұрын
Indeed it is Russ. I also thought about building one that I could use either for 40m or 20m. Work in progress postponed for when I have a little free time. Love it so far. 73, YO6DXE
@عبدهسا9 күн бұрын
نوع الجهاز لقياس رسم الاشاره المستخدم لديك قياس الملف
@dxexplorer7 күн бұрын
What kind of file ? I am a little confused 😁😁
@RAKA-v9l9 күн бұрын
Skema radio sputnik
@dxexplorer7 күн бұрын
Hi my friend. Have a look on the blog article about the Sputnik receiver on the blog ( dxexplorer.com ) you have all the details there. 73, YO6DXE
@dx83513 күн бұрын
Hi Ciprian, I have the Sputnik on a protoboard and it tunes very well on 40 meters. How did you calculate the 3 turns of the L1 toroid? Is it possible to modify the coil to make it work on 20 meters without changing the circuit? Thanks
@dxexplorer7 күн бұрын
Sorry for the late reply. I have no phone connection here so I only have internet when someone else in other network shares a little with me haha. The 3 turns I picked by trial on error. I wanted to be sensitive but also not too much to avoid overloading it. Yes I made a version for 20m as well. I cand remember the turns number though. But I didn't changed anything in the circuit. Maybe just the value of the capacitor that is in parallel with the main coil. I think I used 14 turns if I remember well ( but I may be wrong ). 73, YO6DXE
@dx8356 күн бұрын
@@dxexplorer Ciprian, thank you for your response. Don't worry if you weren't able to reply quickly. I finally made the modification with a yellow T50-6 toroid, with 3 turns for L1 and 16 turns for L2, and the Sputnik receiver is working across the entire 20-meter band. It’s an excellent regen radio, which has really surprised me. I uploaded a video with a test to my channel, 73!
@that_kai_person13 күн бұрын
Hey, I wanted to ask if you ever found a good schematic I could follow for an iambic keyer. I tried messing with 555s but it was all too complicated for me…
@dxexplorer7 күн бұрын
Nothing as simple as I want so far. I am also still searching. This one also works but not yet perfect. Maybe this autumn I will have a little time to make it work as I wish it would. 73, YO6DXE
@DiscusRussell13 күн бұрын
kzbin.info/www/bejne/oX7PfJl-fbdrfLs
@bobkids00914 күн бұрын
I just received my unit today 21.09.24.......indeed it is a very nice unit with fantastic sound performance . what you described is very précised and detailed . Thanks for sharing your thoughts in this cute little wonder......cheers from the Far East .....
@dxexplorer7 күн бұрын
Thank you so much as well for watching. Indeed I also love it a lot. Really good sound to be honest. I was not expecting that. 73, YO6DXE
@ericviele437914 күн бұрын
Great review!
@dxexplorer7 күн бұрын
Thank you as well for watching. Really good tools. Happy to have them and what I have extra I like making gifts to friends so they are happy too 😁😁. 73, YO6DXE
@IK8XOO--Paolo15 күн бұрын
5:45 The test is correct in the procedure but the resulting attenuating level in decibel doesn't make sense because it is performed on 50 ohm VNA impedance but it is not the same impedance that common mode impedance will "see" on the external surface of the radianting coax braid. Vurthermore the choking is broadband and that impedance will vary enormously as the frequency varies. So the data in decibels can only be comparative but it is better in that case to refer to the reactance
@dxexplorer7 күн бұрын
I am sure is not exactly perfect. I am also still in the learning process to make more precise measurements. So far all I know is what I have learned from other fellow KZbin creators that made videos on this subject. But this is the beauty of the hobby.. always learning more and better ways to do things. 😁😁 73, YO6DXE
@IK8XOO--Paolo6 күн бұрын
@@dxexplorer 783 / 5.000 Hi, physics and electronics in particular, should be studied with books to be sure not to acquire wrong information unless you choose well-known names e.g. W2AEW who, thanks to his past jobs, also knows how to explain very well (suggested to all my students). The situation about videos in italian is dramatic due to a very low level of the youngest Italian OMs and also, despite this, they make and publish videos with the claim to explain what they have not studied. This is how myths and legends are born and spread: this is the reason why I have written several articles with the aim of fighting them. The links are on my QRZ page; sorry, they are still only in Italian: I hope Google can help you, if you are interested. 73s
@craniumjunglist893415 күн бұрын
I have just bought this talkie and it has version ham 240416 . Is that the latest firmware?
@dxexplorer7 күн бұрын
I don't know to be honest. I have a really bad phone signal here and I am happy I can reply here. Nothing else really loads for me now. Usually you can go on their website on the product page and down low in the product description you should have a link to take you to the firmware page and it will tell you what is the latest one. 73, YO6DXE
@uli_683017 күн бұрын
Hello, I have simply rebuilt the MiniWhip. I used the J310 and the 2N5109 transistors. So the thing works. Unfortunately I can only operate it indoors (under a roof at a height of approx. 11m). As receiver I use a RSP1A with the SDR Console V3. I have been using a cheap China MiniWhip for some time now and will now compare which one performs better. According to your description I will switch to the 120nF and the 1µF capacitors. I have reinstalled the 10µH coil because I think it gives better and cleaner reception. You just have to try a bit. What I have noticed is that the antenna plays more strongly in the lower frequency range (up to 6 Mhz). The higher frequencies are not so strong so far (why?). I use the bias T from my MLA-30+, but it also works with the bias T from my RSP1A (5V), albeit with slightly less power. I have now ordered the original board from PCBWay. For being a beginner in the field of electronics tinkering, I managed it quite well (thanks to your instructions). I'm really proud of it. So far I've only made my own antennas (MagneticLoop). They are very suitable for indoors. Now I will continue testing. Let's see what else I can “get out”. Incidentally, I am currently decoding RTTY on 146Khz with the Whip under poor conditions - but it works!
@dxexplorer7 күн бұрын
I am also really happy about the way it works. Not as sensitive as the end fed half wave but they seem to work differently. The mini whip seems really good on picking up DX stations. I am also still experimenting with it but considering that the original design was experimented on by the creator for sure... I kind of trying to stick to the original design. I will also try to order the original transistors as I am sure that it will perform a lot better. Tomorrow I hope to make the part three of the video on this one as I am curious how it performs here in the mountains in the scouts camp I am currently in. 73, YO6DXE
@uli_68306 күн бұрын
@@dxexplorer Thank you! I have just replaced the capacitors mentioned. The reception seems better to me. Especially on the upper bands. Let's see what happens next. Have fun trying it out!
@عبدهسا17 күн бұрын
هل الاستقبال مسافه عن بعد
@dxexplorer7 күн бұрын
Maybe Google is not translating well... but I can't really understand the comments. What do you mean by remote reception ?
@rudiwiedemann817317 күн бұрын
DUDE! By measuring only ONE HALF of the toroid winding, you're essentially measuring the RF rejection of a simple inductor used as a simple RF choke and NOT a "Common-Mode Choke". You need to connect the center taps of the NanoVNA to BOTH HALVES of the toroid winding (at input AND output to each NanoVNA center tap, respectively) and you should find that they deliver bettern than -40dB of "common-mode suppression or rejection". That's because with this test you're essentially trying to SEND current of the SAME polarity down BOTH SIDES of the CMC which is the definition of "common-mode current".
@georgelasko834612 күн бұрын
Is there a way to contact you for more information about this?
@dxexplorer7 күн бұрын
Still learning on how to make better measurements on anything related to amateur radio. The best part of the hobby is that there is always something new to learn for better results. So far I do things as I learned from 99% of the people doing measurements either here on KZbin or in real life. As long as I am "close" and I have an idea how a certain thing may work or how effective it is... I am happy. But I never say no when it comes to doing it better. 73, YO6DXE
@chrisreynolds633120 күн бұрын
I found a shortcut by accident to switch between the 9/10 khz setting quickly. Press and hold volume minus when the radio is off.
@dxexplorer7 күн бұрын
Ohhh cool that I didn't know hehehe. Thanks so much for the tip. 73, YO6DXE
@robertvandersanden24 күн бұрын
Thanks for the interesting videos about the mini whip. I made one myself a couple of years ago, with slightly different parts but with the same basic circuit diagram. Works well although there is too much noise inside the house. My two cents about grounding: this antenna is an electric field probe which senses a voltage against the ground of the circuit board. Ideally you would like your ground to be a very large metal sheet directly connected to your circuit ground. But the electric field is higher further away from this metal sheet, it would be nice if the board was mounted on top of a metal pipe sticking out at least a few meters above this metal sheet. That is - in theory, looking at how electric fields behave. The reality is a little different. The circuit senses a voltage between the copper pad and the ground. This ground however is at the end of a length of coax. The outer shield of the coax acts as a (random length) wire antenna and the circuit senses the voltage between the end of this “wire antenna” and some capacitance (the copper pad) towards it’s surroundings. This means that how you have your coax to your mini whip and how else you connect your mini whip to any kind of metal structure has a great effect on it’s performance.
@dxexplorer24 күн бұрын
Ohhhh thank you so much. Now I understand even better. I was close but now I am closer 😁😅. I just wonder as I see diferent opinions online... some say its better to ground the ground of the mini whip it self right there on the spot... others to ground the coax before going inside the house ( camper in my case )... and others to actually ground the coax right before it goes into the Bias-T. At the moment for my convenience I grounded the entire Bias-T box since is all aluminum and it was easier. The antenna is about 5-6 meters high at this point as as ground I use the entire camper since is all covered in aluminum... and I also have a bit of copper sheet underground with a wire connected to the aluminum sheet that covers the camper. So it should have decend grounding as it is ? Still it doesn't seem so sensitive as I expected it to be. Maybe something is not yet quite right. Trying to figure that out haha. Thanks so much one more time. 73, YO6DXE
@robertvandersanden24 күн бұрын
@@dxexplorer Thanks for your kind words. If you mount the whip a few meters above your camper like you wrote with the camper being all metal that sounds like a good setup. The sensitivity of this antenna isn’t super good. I think the goal for this antenna design was a good compromise between sensitivity, signal to noise ratio and not being overloaded by nearby broadcast stations. I did see in your video that the gap between the copper pad and the ground plans in your PCB is rather narrow. I have it a little wider. The stray capacitance between the pad and the ground plane shorts the signal to ground and limits the sensitivity. Best to keep this stray capacitance as low as possible. All in all this is a nice antenna for a lot of experimentation and for sure everybody’s mileage will vary! Have fun with your build, looking forward to part 3. With regards to where to best ground the mini whip - with the outer shield of the coax being part of the antenna system - the further away from the mini whip PCB you ground the coax, the bigger the influence of the coax becomes as part of the antenna. I can’t tell upfront if this is good or bad. I used mine in the yard on top of 2.5mtr of PVC pipe on a tripod with the coax partially laying on the ground. I took no other grounding measures. Far enough away from the house the noise was low and although a little weaker the ham radio signals were clearly audible.
@dxexplorer24 күн бұрын
@robertvandersanden Ohhhhh I thought about the gap between the pad and the rest of the stuff. Ohhhh one more thank you then 😁😁. Yes indeed it looks like a compromise antenna... but I like it even just as it is. Is nice that it can cover so much and I don't have to keep switing antennas when testing all sort of receiver projects hahaha. Thank you so much one more time. And yes I will do the final install here on top of the camper when the PCB boards for the Mini Whip arrive and I do the final version. 73, YO6DXE
@dxexplorer24 күн бұрын
The PCB Boards design for the PA0RDT Mini Whip Antenna and the Bias-T are now ready and you can order here: - Mini Whip Antenna PCB: www.pcbway.com/project/shareproject/PA0RDT_Mini_Whip_Antenna_341d333c.html - Mini Whip Bias-T: www.pcbway.com/project/shareproject/PA0RDT_Mini_Whip_Bias_T_393e782b.html
@Mini-xi1wt24 күн бұрын
Hi Ciprian, is there a eay to substitute the multi turn pot with regular pots? As theyre not available in my locality
@dxexplorer24 күн бұрын
Yes of course you can. It will only be harder to tune so either use a really big diameter button or in case you have a reduction drive then that would be great too. I used regular potentiometers too until I discovered the multi turn ones 😁😁. 73, YO6DXE
@Mini-xi1wt23 күн бұрын
@@dxexplorer Thanks!
@dxexplorer23 күн бұрын
@Mini-xi1wt Always a pleasure. 73
@sincerelyyours753825 күн бұрын
Interesting series. I built a Mini Whip antenna from a kit about 5 years ago. It worked OK at my old QTH but it also picked up a lot of QRM from the power lines and various other RF emitters outside my house. It was so bad that whole bands were completely saturated with QRM. I now live in a neighborhood with more houses and solar panels but fewer power lines and less QRM to deal with. I've since heard that some people use a balun in line with their antenna, not sure if it is a 1:1 CMC or a 1:9 impedance matching balun, but they say they get improved gain with it. Maybe that could help you, too? 73 JS2OLO Japan
@dxexplorer25 күн бұрын
Thank you so much. Yes it should be a 1:1 common mode choke. But it only becomes effective is the pole of where the antenna is installed is metalic and grounded and the ground of the antenna connected to the pole. Mine is on a plastic tube so a 1:1 choke is ineffective. At least in the tests I made I see no difference. But on the other side, I am lucky because I am in the middle of corn fields with my camper and I do not have interferences. The noise level on the transceiver is down to S2... compared to the S4 I get if I use the EFHW antenna. The only problem I have is that the Mini Whip doesn't seem so sensitive even if at the moment is up 5m in the air. I know it becomes more and more sensitive the higher is installed, but I was expecting it would still work great even if its a little lower 😁. We will see now when I will also do the final install in the kids camp to see if I get better results. My grounding here is not exactly perfect either and I do not use the original transistors so maybe that may be one other reason. Still in testing mode now. I just finished designing the PCB board. I must offer a set to test it and see how that works too. 73, YO6DXE.
@АлександрКулеш-э3ж25 күн бұрын
What type of coax did you use? RG-178? Are These thoroids both FT 140-43? And the final question: what diameter (or AWG number) of insulated copper wire?
@dxexplorer25 күн бұрын
The coax was just simple RG-58... but I tried to buy one that was more flexible and also I left it out in the sun to warm up and become even more flexible when making the turns on the toroid. The toroids are both FT140-43 yes. Its better to use 240-43 or 240-31 even better. I used what I had available. The insulated cover wire is 0.5mm no insulation / 1mm measured with the insulation.
@АлександрКулеш-э3ж25 күн бұрын
@@dxexplorer Thank you!
@dxexplorer24 күн бұрын
@@АлександрКулеш-э3ж Always a pleasure buddy. 73
@TheCrisatube25 күн бұрын
Bel video! ma Sei di origine Italiana?
@dxexplorer25 күн бұрын
Grazie mille. Ohh no, sono Rumeno. Sono stato a Motta Visconti vicino a Pavia per qualche anno nel 2012. Sono venuto a trovare mia sorella per Natale e sono partito due anni dopo hahaha... poi lo stesso nel 2018, sono stato in Italia per un altro anno. Il mio italiano è davvero pessimo, quindi la maggior parte delle volte chiedo un piccolo aiuto al mio amico Google translate. Tuttavia, capisco più di quanto riesca a scrivere o parlare 😅. 73, YO6DXE.
@liviugabreanu-yo3fyo35426 күн бұрын
Bună, adăugați și traducere în RO.
@dxexplorer26 күн бұрын
Neata buna. Am avut la un moment dat insa in afara de cativa amici mai tineri care se mai uita... nu prea se uita nimeni din Romania si cum e mult de munca sa adaug traducerile corecte asa cum ar trebui... nu alea traduse automat de Google de suna ciudat 😁😁 am zis ca nu are rost. Momentan Romania e pe ultimul loc sub 0.2% din vizitatori ... poate mai in colo spre iarna cand mai prind ceva zile mai libere si am vreme sa stau sa traduc fiecare clip. Ia ceva timp totusi ca e de munca sa traduc la atatea clipuri 😁. 73, YO6DXE
@liviugabreanu-yo3fyo35426 күн бұрын
Păi să o facă KZbin automat și ar fi destul.
@dxexplorer26 күн бұрын
@liviugabreanu-yo3fyo354 Suna ciudat rau aia asa ca din topor, dar o sa incerc. Imi e asa de parte tehnica sa nu traduca cine stie ce baliverne si una zic eu alta intelege omul ))
@liviugabreanu-yo3fyo35426 күн бұрын
@@dxexplorer Având în vedere că suntem radio amatori și vorbim o engleză mai aproape de tehnică și Nu ceva literar, zic să nu vă chinuiți a traduce dvs. O zi bună.
@dxexplorer26 күн бұрын
@liviugabreanu-yo3fyo354 Multumesc la fel. Apoi vedem ce perle scoate Google... daca e ok las asa, daca nu o sa fac asa manual in timp unul cate unul cand am un pic de timp liber. 73, YO6DXE