Let's Remove USB Noise from our Icom IC-705
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- Опубликовано: 5 сен 2022
- And Make WSJT-X run FT8 All Day Long!
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i realize your video is several months long but thought i would let you know.
was in my shack today turned my ic7300 on and poof-----rfi on most of the low bands repeating in 40 kc bars on the waterfall. MMM i said. must be interference.
soooo i looked around and saw my usb from my pc to the radio had a usb plugged in.
as soon as i unplugged it my radio came back to life. like magic
to verify i looked around on RUclips and saw your video and confirmed my experience.
thanks for a very concise video. havent added a toroid choke yet but probably will
Excellent, let me know if it helps! A lot if people report good results with Tripp Lite cables like this one: amzn.to/3YmTNQo
Nice video T.O.! I had the same success using this remedy for the same problem with FT8 on the Icom 7300. Solid fix! 🤘📻⚡️
Thanks, check out round 2's video where I tried all the other things in the comments too. ruclips.net/video/mv-FjgSh_Oo/видео.html
Solid demonstration and results!
Stay tuned for round 2. More Laughs and More Fun to come!
Adore this video. This is literally the exact same setup I have on an IC-7851, minus the awesome candy cane braiding on the USB cable. Having a small stack of FT-140-43s and FT-240-43s makes amateur radio so much better. If you work lower than 20 meters frequently, you might consider a 31 mix as well.
Mix 31 is the ticket! I would have grabbed it first! Now I'm just lazy and I need to order more 43s
Nice fix I would have placed the choke near the source but hey you nailed it. We have them all over our sailboat as well. Refrigerator, auto pilot, charger, alternator all have ferites.
Agreed - you have to pick a place to start and I arrived at the answer on the first try, so I stopped looking.
Excellent video Steve, I think that is one of the big reasons I do not do digital ( I did try it for 6 months), I think it is great that you operate digital modes and have found answers to operating FT8 better.
Thanks Kevin! Sometimes a little choking gets things done... POTA FT8 coming up next!
Well Steve, you just solved a problem for me, thanks. Couldn't figure for the life of me, why adding the Amazon-ish ferrite beads wasn't enough for my noise issues. Thanks for a great, practical video. Now reaching to Amazon to order toroids.
Anytime Alan!
I had the same issue with my Dell Laptop USB and my Xiegu x6100. I had a high noise floor and everytime I transmitted my USB bus would crash on my laptop and it would be stuck in transmit. Glad you found our problem! Haha.
Glad I could help!
Great video Steve, thanks for sharing with us.
Glad you enjoyed it!
Isn't the noise source the PC? If so, the beads would be most effective if added at the PC end.
There is a great debate going on in the comments here as to what the noise is. So I'm going to dig a bit deeper. However, you are 100% correct that you choke noise at its source (PC end)... but in this case, since it worked well I wasn't going to re-wrap it. - "Why do you always find something in the last place you look?"
This video saved me a boat load of frustration. Thank you.
Glad it helped
I disabled charging the 705 battery over USB and it helped a lot. Super short (6 inch) USB cable with beads and the issues were gone. Can’t count the number of times RFI has gotten me. 🤬
It comes from the weirdest places!
Outstanding. I've never had any luck with those ferrite beads. I'm guessing they just are there to make cables look more official.
The ones with the built in beads? They kinda work sometimes depending on the type of noise - The reason why you need a few is because that replaces the multiple turns on the same core with multiple cores.
Hi Steve. Quite the USB ferrite there. The Buddipole balun does not have anywhere near enough choking impedance. That is why I designed the TRB/TRSB. 73 de w6akb.
www.akbeng.com/products/triple-ratio-balun/ Looks like they are out of stock. I saw the BP version, how does your model work when you need different impedance? Does it "magically" detect or would I need to make a change? Let me know when you've got stock again!
Thank you for a very practical solution. 👍👍
You bet!
I love those 240-43's. I like the smaller 140-43 ones as well, that is what I use for my USB-cables.
This crest of yours (your RUclips logo). Is there an online tool to create that? I've been looking for it
The 140 should work great as well, just fewer turns.
@@temporarilyoffline it does work great, indeed with less turns. For this is like with radials under a vertical, there is a moment where it doesn't gain noise reduction further. Just try and see what happens.
Good USB cables rather than the dollarstore ones can help a lot too, that I found out a few years back.
@@ve2zdx Hey theree André. I had to look it up because I forgot the call. It was made by Marcel PD3MR
One of the reasons I leave the IC 705 at home when I do POTA/SOTA and using the computer is this issue. I have a FT-240-31 torroid and about 10 turns. I've also turned off USB charging and still have the noise when I hook it up to the computer like you had. When I use my Android phone to log with HAMRS, then I take the IC 705. I usually take the X6100 out on activations when I'm using my computer as it does not have the issue. I just ordered the FT-240-43 torroid and the USB cable in your link and wind up the crap out of it and see what happens. If this finally resolves the issue then it may go on more POTA/SOTA with me. Thanks for the video and the ideas. 73.
No problem Scott. I got a lot of feedback in the comments, so I'll be making a follow-up to share that info back out. Hope it works out for you!
I use WFview when using the IC705. This eliminates the USB cable. There is a time lag when operating WSJT-x/FT8 but if you then use JT Sync this re-syncs the clock allowing for the latency. Hope that helps 🙂
Many ways to skin this one! I have WFView on the list of things to play with now. Thanks!
Wow Steve, I need to check my cable, I have never noticed that noise before that I know of but will check next time!
Let me know what you find!
TNX Steve for letting us know, YL and I have a 705 getting ready to use with the Buddipole. When using WSJT-X instead of hitting the retry button to establish the connection you can go to "Preferences", "Radio" and select the USB port manually. At the home QTH that brings up a lot of USB ports but in the car with the MB Air it should only be probably two just like the USB mini, right and wrong! Choose the other one and hit the connect button. Might save you a few Retry strokes. 73 - Dino KLØS
Great tip, thanks for watching!
Helpful!
Glad it was helpful!
Your backyard is huge... nice!
There is a ton more of it to explore and enjoy too!
"Gas station USB Cable" love it!
Origins man!
Great information
Thanks, did you see part 2?
I run ferrite beads both ends and have Lindy shielded cables, works with no problems.
Belts 'n braces! I love it!
Greatly informative. Always a good idea to "choke the heck" out of a digital cable. From now on I am going to follow your advice and use a "big boy" with many wraps as possible, just because!
Heh heh - Go big or go home friend!
Using the chameleon coax with the choke on it fixed my issue completely. Others have said that Tripp Lite USB cables remove the noise so I bought some, but haven't tested them out with regular coax.
That would be a good test. I'm shocked that the laptop is generating as much noise as it is... but we know the fix!
@@temporarilyoffline for whatever reason, I haven't had any noise when connecting to the laptop. When I would transmit, it would cause the disconnection, though. Do you have the USB port set to charge the 705? If so, try turning that off with the regular cable and see if the noise drops.
@@0150r I never even bothered to look if that was a setting... I'll try it.
I have the same problem with 20m signal generation on my IC-7100 causing problems with WSJT-X. I'll need to find a USB-B cable long enough to do that toroid winding. I currently have a cable with a ferrite attached to it at the radio side, but it only seems to stop interference about half the time.
Probably not enough turns or beads, that's what I ran into with the snap on beads - better, but not enough.
I use a shielded USB cable and never had an issue. I will protect that cable carefully it seems :)
I just ordered one to test out for a follow-up video. Along with all the other solutions. I love that we have so many ways to solve problems.
Common mode RF caused by inadequate RF ground at the antenna is what is causing the dropped connection and most likely the noise too.
Could be. The 705 is particularly susceptible to it.
The ic-705 also has a built-in solution: WLAN. ;)
To get the audio into wsjtx, you just need the program wfview and virtual source/sinks in pulseaudio (or if you use the wrong operating system, virtual audio cable;))
It's on the list to play with, thanks.
Thanks for the video (FT8? The best bit of portable is being able to actually talk to people)
I do enjoy some portable phone, but FT8 is a very easy way to demonstrate a lot of ham radio concepts on video. Thanks for watching!
Scientist and a teacher, well done mate.
After 28 turns on the ferrite, how much line was left of the 10ft? sTepHeN - FOO WAS HERE :)
Seems like 5-6 ft, "plenty"
not working this method...i tested a tonn of different variety ferrites, each end of the cable at same time, like: #31 #43 #61 #33RI #K mix, etc. if usb level communication starting between ic705 and the various laptop/desktop pc, the noise coming up again. What i found that is if i pull a bit to sideway the connector at the radio, the signal changeing, a bit getting qieter, maybe loose connector and improper gnd connection? But this is abnormal in every way! Especialy for the price.
Totally agree - the 705 costs way too much to have RFI issues!
The issue with the micro USB orientation is called the 50/50-90 rule. Should be a 50/50 chance but 90% of the time you get it wrong. Great video on noise/RFI suppression, need to do this with the Micro USB cable for my 705. de W6VIP
The micro's are really hard to tell the orientation by looking at the port - the USB-As are usually "holes up" and I get them wrong less often. 559!
Actually, it's a quantum phenomenon. You can keep flipping and reinserting the cable, but until you actually look at the socket, it's wavefunction does not collapse.
@@m_a_s6069 very true!
@@m_a_s6069t's then that you realise you've managed to insert it perfectly into a RJ-45 port.
*in case you didn't know, Usb A fits with just enough friction to feel like a really good connection into an RJ-45 socket.
Thanks TO!.
Makes sense as I've also had intermittent lockup issues with my 705 connecting to a HP 840 G3 laptop & had tried different micro USB cables & many clip on ferrites, but the issue would come back.
Will score a FT-240-43 & give it a spin.
Ps. Please forgive me TO as my internet jammed just as I tried to click the "Like" button & it registered a "Dislike" so please disregard that as really I love the video & your content (clicked "Like" to try negate it)
Thanks John. Stuff happens, all good here.
Are how many turns important or just a case of get as many in as you can?
I'm sure there is a magic number, but I just put on as many as I could.
What model LDG tuner/match is that? T100?
How is it powered, or connectors used?
Connected to radio tuner jack?
GOOD EYE! It wasn't part of the test, but you caught it! I'm doing some testing for an upcoming video and will have some tips and tricks for it. Its a great little tuner. It is the Z100-Plus from LDG. For the 705, you just need a regular straight-thru cable to the tuner, for the Yaesu's you need a special cable. It will work with "RF Sense" as well. Power comes from internal batteries (AA off the top of my head), but I'll have a special tip for powering it. Stay tuned - so many videos to make, but my day job gets in the way.
@@temporarilyoffline No worries. Just curious. For the T100 I wired their style of Molex connector to a 3.5mm stereo plug. Powered by a 9v batt "Velcro'd" in the case. No voided warranty. ;-)
@@martidav1 that's the way of the ham!
I have the same problem and when it goes in TX the connection with PC goes down. The same problem of RFI return than give very noise disturb. I tried with shielded cable, i put silver paper on the cable, i used ferrite rings, i used 1mt or 5mt cable, but not resolved, the problem exist... Now i will try your solution but i thinks that icom have to give a correct cable for the user. Last step is the official software that use Bluetooth.
Good Luck!
The link for the 10 foot USB cable is the same link you used for the Toroid
Fixed, thank you!
I bought 20 of those clip-on ferrite beads, they're waiting for me at the post office, hah. I'm also experiencing increased noise floor with an SDR dongle connected to my MacBook Air (which could be the same model as yours + I'm also running Linux, though with MATE instead of XFCE). With the desktop computer, it's better on HF, but worse on VHF and UHF due to DisplayPort and HDMI noise. However, even one or two of those clip-on ferrites make things better. But I must try your method, obviously a single turn around the (expensive) core is probably more effective than one no-name clip-on bead.
You're simulating multiple turns by using multiple cores, otherwise it's the same solution... just different storage hassles.
Usb cable need ferrite cores on both ends also a shielded cable and Cores would be best order a quality cable
Good Idea Kevin!
You are getting RF coming down the shield of your antenna cable, RF on the case of the 705, then RF on the shield of the USB cable, and RF on the laptop.
You stopped the RF with what you did on the USB cable. Another solution is STOP the RF from coming down the shield of the antenna cable, buy adding tolorids and such to the antenna cable, or a counter poise.
You are correct - The toroids that are already on the antenna are not enough and I can add more there.
Great job showing that the ferrite beads don't help much! I went through this same process like you did. Thanks for posting videos. This would have very useful to me. I got there anyway but this would have saved me time. Stay safe, and thanks again. KJ7PRS
Thanks for the kind words!
The choke might be treating the symptom not the cause. The issue *may* be the fact that the computer and radio are galvanically connected via the USB. Consider - the chances that the radio and computer are at exactly the same voltage potential are slim - thus there *will* be an unintended current flow via the USB - and this *could* be the root of your problem. You could eliminate the galvanic connection by using an opto-isolator - but don't buy an 'el-cheapo' as they can generate HF hash! The cheap ones also limit the throughput speed - and thus might not work for your application. So you might need to buy an independantly powered USB opto-isolator - ie one that dosen't take it's power from either of the devices - a bit more expensive... 73 M0XYM
I didn't know these existed until today and they run from $9 to $60 for the "cheap ones", I haven't found one that is powered, but would imagine it is cost prohibitive. I fully agree with your analysis, bit in the end, I'm $10 in and problem is solved, so are we both right, just picked different solutions?
It looked like you did not gt the noise until you plugged the cable in to the computer. Could the noise be coming from it?
Yes, the noise is from the computer - either CPU noise or variances in voltage. The toroid solves both potentials, so I'm happy to be playing radio again.
Is that toroid just as effective at the lower bands?
I don't see why it wouldn't, but I wo t be able to check until the weather gets back in the 40s
Fast way to get out of being stuck in transmit: change the vox button to work as a tx button in settings. I get stuck in tx way more often than I use vox. In my (limited) experience, it seems like the 705 does not like compromise antennas (even with a tuner) when doing digital modes. Amazon ferrite clips seem useless here too. 0/10, would not recommend. I like the giant toroid, definitely going to try that.
Go big or go home, right!
Nicely done Steve! You are now officially a "choker" Sir! 73 - KF6IF
Thanks Phil! Sometimes somethings just need to be done.
This looks interesting does all this require is a USB connection ? I have a 705 but haven’t played with it a lot yet. What is the software you are using on the Mac ?
The radio does not require a USB connection. It has bluetooth that you can use instead of USB. The software on the mac is "WSJT-X" and that's the premiere software needed for FT8 and other "Joe Taylor" modes. Lots of fun!
@@temporarilyoffline have you done any tutorial videos on this ? That would be really helpful. Thank you
@@ads3453 Not on this specific radio, but I will. The IC-705 is one of the easier radios to get onto FT8. Also, we are doing a "Hey what's this FT8 all about" type video tonight: ruclips.net/video/l8QjlKK0tLU/видео.html
@@temporarilyoffline cool I haven’t played with data modes for years the last time I did was with a icom 7000 with modems and cat boxes etc
@@ads3453 sounds like fun
Thanks Steve- Yesterday I tried FT8 with a loop antenna- it was a disaster. Was highly disappointed with Icom. The cheapo Xiegu X6100 had no issues whatsoever.
Yeah. I had the same problems - the x6100 worked fine and the 705 didn't. Now it's fixed!
@@temporarilyoffline But with a big lump. I just purchased a usb dongle with filtering, I will report back after some tests...
Same
the 705s i heard on air all sounded very good, sad that it has noise from the USB-port.
We got it fixed!
Also solved by wifi connection to IC705 with Icom Remote Utility software
Sometimes, yes
I have absolutely ZERO noise on my rig when connected to the Buddipole, but it works great for signal attenuation.
I don't see this as a buddipole problem - I've run into this same problem with multiple antennas.
@@temporarilyoffline Thumbs up for a good response. I was just ribbing the Buddipole fans.
@@norrinradd8952 I like buddipole in general, but I feel the frustrations of high-Q
I gave up connecting my IC705 with USB. I have tried dozens of cables with beads and with built-in beads. All still had noise. Now I just use a wifi connection.
Thanks Hef! Wireless FT8 is next on the list to conquer. So much to play with!
I was really disappointed at first when connected to the PC via USB cable, could not get rid of the noise. It turned out to be l had to turn off charging over usb in the settings, the noise was from the charging circuit for the battery.
The ferrite toroid was only needed to stop the radio locking up on transmit.
So even with charging off, you still had TX lockups? (Making sure I read that right)
Always use a good quality shielded USB cable. I've noticed a lot of the USB micro cables are poor quality.
USB-C seems to be better, but lacking on the radio of course.
FT-240-43 for the win!
Shielded USB is on the menu
Very interesting.. thx for sharing.. I've noticed my noise increase on my ic-705 here in the shack when my mAT-705 tuner charges via the USB connection.. Looks like I should try your suggestion.. Great video as always ! !... Kevin ~ k0klb
Thanks Kevin!
Well, I know what I'm doing when I get home tonight, 73.
Let me know how it goes. Lot's of things to try in the comments here.
Reasons to buy the Icom remote control software and use a WiFi connection to the radio.
Just be careful, sometimes the wifi connection can get blown out too.
YOTA Station.... Yards On The Air
Exactly!
there are more ways to plug in the USB: the right way that seems wrong, the wrong way and the right way.
Might as well just close your eyes and cross your fingers!
Interesting one. I understand nothing about ft-8, but using the sdr-control app would prevent this issue, supposedly. I'm curious about it now =)
That's right! SDR Control would prevent the issue with the USB Cable - because there would be no USB cable!
@@temporarilyoffline but does the RFI cause malfunction on the network created to connect the radio and the pc/tabled? That's a good experiment.
@@ve2zdx It does sometimes, but the only time I've run it have been super-compromised positions (like inside a hotel room) and there are a whole lot of things going on there.. More to come as I know more.
I use SDR-Control with a MAC, and network access is the way to go. It is faster, untethered, and no noise problems. Best software I have purchased in a while.
A long understood and well documented issue with the IC-705 that even Icom has acknowledged. They claim there wasn't enough space in the radio for proper shielding and have essentially told the user community its their problem to deal with. This issue badly mars an otherwise great rig, and Icom's response to this issue is very disappointing. One solution that works great is to use the Remote Server package that comes with Icom's RS-BA1 software and just drive everything via wi-fi. In fact, I've been saying for over a year that Icom can apologize to the 705 community by providing a free IC-705 specific version of the Remote Server software. But all we get from them is "keep buying cables and adding chokes until you find something that works".
Agreed, icom makes interesting products, but could do a better job taking care of its customers. Apple had a similar problem with an iPhone model and gave out free phone cases to fix it.
You do know that a USB plug has three sides? Wrong, wrong and right.
Is that what I've been doing wrong all along?
Thanks Steve,
73 Rob G3RCE
You bet!
Used a USB to USB isolator ( chinese).....
Excellent find! I have one on order now.
Interesting problem Steve. I am a degree level trained Auto engineer, and I can see one problem with your set up, you are attacking the symptom, NOT the problem!. Seems to me that you have broken the first rule of fault finding by going straight for the simple answer. Surely, as the cable itself cannot produce noise, and the radio shows that the environment is "quiet", the problem must lie in the laptop? As a member of the "Big Hammer" school of engineering, I am totally lost with the magic of the gizmo, I reckon I would try and find a quieter laptop, rather than rely on having to choke everything off in sight. On the other hand, your "fix" worked so who am I to criticize!! 73 Jim M7BXT
Thanks Jim! In my normal operation with this radio I don't even have a laptop connected. I'm either in the field with paper and pen, or I'm in the home shack with multiple computers of varying kinds. One thing the comments on this video have shown is there are many ways to solve this problem and today I learned that there is a way to turn off the charging circuit in the radio which might also help. Its not like the Macbook is a 3rd tier player - Apple makes some of the best computer hardware out there - hard to hit that hammer any harder. But again, more testing/playing is warranted and possible. I have a Dell Laptop to toss at it as well as turning that charging circuit off! If anything magical/video worthy turns up, I'll have one out to show it.
Hi 73
Thanks for stopping by. 73 my friend.
Can't you just turn off charging and switch to data only on the USB port? I hate apple so no idea...
Ive heard dissenting opinions on this and will be doing more testing
10 turns on 10cm pipe
ugly bud good
For the USB cable?
I found out about your channel from Jonathan M0JSX, this was super useful, I learned something today.
Glad to hear it! Jonathan is good people!