Good USB Cables #usb
|
Recently I finished up my project to link up my Kenwood TS-590S with SDR Console. I added a buffer Amp inside the TS-590S, with a SMA panel jack on the back of the radio. This connects to my SDRPlay RSP2pro. I connected the TS-590S USB port (USB serial connection) to my PC. I had everything setup and it was working great. The TS-590S and SDR Console were tracking. The S meter on the TS-590S and Console matched pretty close. A real nice setup. Until I transmitted. I got feedback in my PC speakers, the TS-590S USB serial port disconnected and Console seems to get lost. I obviously was having issued with RF getting into the PC and RSP2pro. I suspected the no-name cheap USB cables used to connect the RSP2pro and the TS590S to my PC.
My solution was to purchase two of the following cables at Amazon, https://www.amazon.com/gp/product/B003MQ29B2/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1. They include a ferrite choke at each end and I confirmed that there is continuity between the shells of each connector. Since I replace these the station has been solid. No evidence of RF getting into anything. I highly recommend these cables. They are only USB 2.0 but for the serial interface on the TS-590S and the RSP2pro that is fine. -- Dennis KA6FUB |
|
|
|
Siegfried Jackstien
and if the cables are a bit longer route them a dozen times through a high permeability donut core those added ferrites on the cables are for vhf uhf.. but not good enough for shortwave ... adding a big size donut helps dg9bfc sigi Am 16.11.2021 um 01:34 schrieb Dennis
Matzen:
Recently I finished up my project to link up my Kenwood TS-590S with SDR Console. I added a buffer Amp inside the TS-590S, with a SMA panel jack on the back of the radio. This connects to my SDRPlay RSP2pro. I connected the TS-590S USB port (USB serial connection) to my PC. I had everything setup and it was working great. The TS-590S and SDR Console were tracking. The S meter on the TS-590S and Console matched pretty close. A real nice setup. Until I transmitted. I got feedback in my PC speakers, the TS-590S USB serial port disconnected and Console seems to get lost. I obviously was having issued with RF getting into the PC and RSP2pro. I suspected the no-name cheap USB cables used to connect the RSP2pro and the TS590S to my PC. |
|
|
|
I have these on many of my USB and CAT5/6 cables where they interfere with my SDR Servers. My TX antennas are far enough away, so TX’ing was never an issue. I just don’t like seeing/hearing all the QRM across the bands!
|
|
|
|
Peter 1956
I think I'll pass!
|
|
|
|
That shipping price is crazy; however, it's either the seller or you don't have Prime. I cannot precisely tell from the screen-shot. This link has them for $4.95 + free shipping w/ Prime. I have bought several of these, and they're quite nice. Bob, W4RLS |
|
|
|
Tom Crosbie G6PZZ
The manufacturer doesn’t specify the type of ferrite they use so the leads might be quite useless at rejecting any emi/rfi problems you might have. By all means try them out but my advice would be buy a quality screened cable where you at least know the AWG/SWG of each conductor and add your own ferrites, either as clip-ons, or by using rings. Tom G6PZZ
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>
On Behalf Of BobS via groups.io
Sent: 17 November 2021 20:23 To: main@SDR-Radio.groups.io Subject: Re: [SDR-Radio] Good USB Cables #usb
That shipping price is crazy; however, it's either the seller or you don't have Prime. I cannot precisely tell from the screen-shot. This link has them for $4.95 + free shipping w/ Prime. I have bought several of these, and they're quite nice. Bob, W4RLS |
|
|
|
Gedas
This is a tough one because the makers claim of being "screened" or shielded may or may not mean anything as far as being a quality cable and help tame RFI issues. In my prior tempest life
before specifying a certain cable assembly we would of course
run tests in the lab. It was convenient working for a large
defense firm as we had access to SEM and x-ray facilities just
a few hall ways away. You would be shocked how many commercial
cables we x-ray'ed showed that while they did provide some
form of shield (usually a thin cheap aluminum foil) where the
ends were 100% totally unterminated. Only a few we found
actually terminated the shield to the case which is a must if
the shielding is to do any good. Just wrapping a cable in foil
buys you ziltch. Gedas, W8BYA EN70JT Gallery at http://w8bya.com Light travels faster than sound.... This is why some people appear bright until you hear them speak. On 11/17/2021 4:27 PM, Tom Crosbie
G6PZZ wrote:
|
|
|
|
David Lewis <n5sjs@...>
It is shielded and has the ferrites at each end. They're good for eliminating rfi on all hf bands.
73,David
|
|
|
|
The manufacturer is Tripp-Lite. They're a well-known, quality brand. I have half a dozen or so. They're quite good. |
|
|
|
toggle quoted message
Show quoted text
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of BobS via groups.io
Sent: 18 November 2021 04:25 To: main@SDR-Radio.groups.io Subject: Re: [SDR-Radio] Good USB Cables #usb
[Edited Message Follows] The manufacturer is Tripp-Lite. They're a well-known, quality brand. I have half a dozen or so. They're quite good. -- - + - + -
Please use https://forum.sdr-radio.com:4499/ when posting questions or problems. |
|
|
|
jdow
Trust but verify.
toggle quoted message
Show quoted text
{^_^} On 20211117 20:24:36, BobS via
groups.io wrote:
|
|
|
|
jdow
Eliminating? You'd be lucky to get 25 dB. Those are
small ferrites for HF coverage.
toggle quoted message
Show quoted text
{o.o} On 20211117 15:09:51, David Lewis via
groups.io wrote:
|
|
|
|
Mark Cayton
If the shielding is grounded then the HF protection from the shielding alone could be quite high. The OP "confirmed that there is continuity between the shells of each connector".
Mark |
|
|
|
It’s not just USB cables that have poor RFI shielding. I was just at another Ham’s QTH installing an over the air TV antenna for when the power/cable goes out. When ever he turned on his IC7610 with the external video monitor, he would loose TV reception. TV antenna was in attic and rig in basement, separated by +35’. On a hunch, I disconnected the DVI Cable from the IC7610 (that contains toroids on both ends) and TV reception returned. I placed a few random, unknown value clamp-on ferrites that he had in a drawer and all was well.
The hunch was from prior experience with a DVI cable in my main operation position, the computer monitor wipes out certain 440 band channels on my 2m/440 rig. Those with DVI cables in operation and use 70cm and above may want to experiment with ferrites. YMMV (Your Milage May Vary) 73 Kriss KA1GJU/AM |
|
|
|
jdow
VGA cables do this, too. I am not sure about HDMI.
There are a lot of HDMI cables with glowing advertising and claims
that aren't really up to snuff. Linus Tech Tips has the testing on
youtube. I am guessing much the same goes for USB3 cables and
Ethernet cables and....
toggle quoted message
Show quoted text
{o.o} On 20211118 06:53:29, Kriss Kliegle
KA1GJU wrote:
It’s not just USB cables that have poor RFI shielding. I was just at another Ham’s QTH installing an over the air TV antenna for when the power/cable goes out. When ever he turned on his IC7610 with the external video monitor, he would loose TV reception. TV antenna was in attic and rig in basement, separated by +35’. On a hunch, I disconnected the DVI Cable from the IC7610 (that contains toroids on both ends) and TV reception returned. I placed a few random, unknown value clamp-on ferrites that he had in a drawer and all was well. |
|
|
|
John Cliff
Good call there OB. Ferite the true friend of the Radio Ham. 73 de John - G0WXU. On Thu, 18 Nov 2021 at 15:13, jdow <jdow@...> wrote:
|
|
|
|
jdow
That's "Ol' Bi*ch" to you, Sir.
toggle quoted message
Show quoted text
{^_-} (I really should use my name more often. But I learned the hard way in 1985-1986 with a year's worth of cyber-terrorism that a certain amount of anonymity is a good thing. And, no, I do not give up easily. I won that one except for the psychological scarring. I'm here. He's dead.) On 20211118 09:06:15, John Cliff wrote:
|
|
|
|
Peter 1956
I'm currently located in Botswana. There is no Amazon here. (No rain forest at all).
Not everyone on the internet is in the USA ;) Peter |
|
|
|
Hi Peter
Then you need to get creative..old smpsu supplies have torroids in them. They work.green ones are better than the yellow and white.. That’s assuming you can find a supply of scrap stuff? Knackered inverter stick welders?? Etc.. Simon ( not that Simon, but another.) |
|
|
|
N2MS
Peter,
The molded chokes are effective at VHF to comply with international rules. You have to put multiple turns of the cable through a Fair-Rite Mix 31 ferrite to attenuate HF frequencies.
Fair-Rite ferrites are available at Digi-Key, Mouser and other distributors.
Where is the closest rainforest? Is it the Congo River basin?
Mike N2MS
|
|
|