Re: [Elecraft] RJ45 to DE9 cable (E980297) for upgraded K3
Yngvi, I don't know if that cable will work or not. But, you can order Elecraft p/n E980297 from Elecraft if you want a replacement. If you also have the P3, you may want CBLP3Y instead. See the KIO3B Installation instructions, page 14. 73, Don W3FPR On 10/2/2016 8:33 AM, Yngvi (TF3Y) wrote: Hi folks. I misplaced my RJ45 to DE9 cable for my upgraded K3. After a while I found this (see photo on link below): https://goo.gl/photos/LJwu7gZpEsx6N1K47 This cable looks like it may be the one but I´m not sure. I had two of those one with a female DE9 and the other with a male DE9. However, I have a faint memory of the cable I got with my KIO3B upgrade having been gray whereas these are blue. Can I measure the cables? Where would I be able to locate a diagram for the pinout? Thanks / 73, Yngvi TF3Y __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] RJ45 to DE9 cable (E980297) for upgraded K3
Hi folks. I misplaced my RJ45 to DE9 cable for my upgraded K3. After a while I found this (see photo on link below): https://goo.gl/photos/LJwu7gZpEsx6N1K47 This cable looks like it may be the one but I´m not sure. I had two of those one with a female DE9 and the other with a male DE9. However, I have a faint memory of the cable I got with my KIO3B upgrade having been gray whereas these are blue. Can I measure the cables? Where would I be able to locate a diagram for the pinout? Thanks / 73, Yngvi TF3Y -- http://www.tf3y.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] Elecraft, RJ45 Standard.
Kevin, Thanks for pointing out my typo. I meant 4 pairs. 73 -- Dave Robertson KD1NA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] elecraft,RJ45 Standard
Folks - due to the large number of posts on this topic, let's end the thread at this time to give our other readers a rest. 73, Eric Moderator /elecraft.com/ On 5/9/2016 3:10 PM, Lynn W. Taylor, WB6UUT wrote: On 5/9/2016 10:03 AM, Jim Brown wrote: At audio levels, the shielding from twisting the wires might be helpful. It is VERY helpful. When I said *might* I was being slightly sarcastic. If a cable has an RJ-45 on each end, there is always a chance in a modern home that the cable is going to carry ethernet or find itself in some other spot that matters. In fact, Murphy is going to see to it that out of all of the cables available, you'll grab that one. 73 -- Lynn __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] elecraft,RJ45 Standard
On 5/9/2016 10:03 AM, Jim Brown wrote: At audio levels, the shielding from twisting the wires might be helpful. It is VERY helpful. When I said *might* I was being slightly sarcastic. If a cable has an RJ-45 on each end, there is always a chance in a modern home that the cable is going to carry ethernet or find itself in some other spot that matters. In fact, Murphy is going to see to it that out of all of the cables available, you'll grab that one. 73 -- Lynn __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] elecraft,RJ45 Standard
On Mon,5/9/2016 1:21 PM, dave wrote: > You're missing the fact that although these conductors INTENTIONALLY > carry DC and low rate signals, they also can PICK UP RF and AF noise. > Twisted pair, when used to carry a signal, is at least as powerful at > rejecting RF and AF noise pickup as coax, but ONLY if the pair is > dedicated to a circuit. And also only if the twisted pair is properly terminated in a balanced termination - on both ends. I was field engineer for Bell. I was sometimes totally amazed at just how good twisted pair are at rejecting noise. As good as coax, if not better. Not true. Yes, cancellation can be improved by balanced termination, but ONLY if balanced broadband -- that is, DC to the highest frequencies of the interference. But twisted pair is VERY effective at rejecting magnetic coupling even when the interface is unbalanced. I learned this from solving a severe RFI problem problem with the serial interface to my K2, way back in 2003. I was using the "official"Elecraft cable, which was parallel conductors, NOT twisted, and my TX antenna was a top-loaded end fed wire with a tuner in the shack for 160 and 80M. At only 12W, coupling to ,my computer via that serial cable caused it to lock up. I replaced that parallel wire cable with CAT5, using one pair per circuit, and making the return connection to the DB9 shells, NOT to the "ground" pin (to solve Pin One Problems). Once I had changed the cable, I could run my Ten Tec Titan to legal limit with no interference up to 17 MHz when I intentionally loaded that same antenna on all the HF bands. If I used shielded twisted pair, I could run full power up through 10M. But . . . the telco pairs are terminated in carefully balanced terminations. I don't think the typical ham/audio install is so carefully designed. They may be, I don't know for sure. I suspect the terminations are, for the most part, unbalanced. There will still be some rejection of noise, maybe a good deal. But not as good as if properly terminated. See my comments above. I have used twisted pair here with good success, but there is some luck involved if the pairs are not properly terminated. I have yet to see a situation where twisted pair made things worse, and it often solves serious RFI issues. In the pro audio world, it is well known, for example, that loudspeaker cables should ALWAYS be twisted pair, NEVER parallel wires (zip cord, glorified or not). Sadly, the high futility folks have never learned that, and most hams haven't either. Audio power amps use feedback around the output stage to reduce distortion, a technique first developed more than 100 years ago (by Bell Labs, I think). RF on the speaker cable will couple via that feedback network to the input of the audio output stage. Replacing the zip cord with twisted pair is an effective fix. Nearly 40 years ago, Prof R. A. Greiner at U of Wis published an AES paper that showed that for all practical purposes, the only thing that matters with loudspeaker cable is DC resistance, and that lower is better. The sole exception was with a VERY rare type of loudspeaker that had a very low impedance at high audio frequencies. The impedance of 99.99% of loudspeakers increases rapidly with increasing frequency. His paper can be found in the Journal of AES in any decent university's technical library. And yes, one of the cables he considered was sold under the Kimber name, which was mfd on the concept of litz wire. :) 73, Jim K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] elecraft,RJ45 Standard
> You're missing the fact that although these conductors INTENTIONALLY > carry DC and low rate signals, they also can PICK UP RF and AF noise. > Twisted pair, when used to carry a signal, is at least as powerful at > rejecting RF and AF noise pickup as coax, but ONLY if the pair is > dedicated to a circuit. And also only if the twisted pair is properly terminated in a balanced termination - on both ends. I was field engineer for Bell. I was sometimes totally amazed at just how good twisted pair are at rejecting noise. As good as coax, if not better. But . . . the telco pairs are terminated in carefully balanced terminations. I don't think the typical ham/audio install is so carefully designed. They may be, I don't know for sure. I suspect the terminations are, for the most part, unbalanced. There will still be some rejection of noise, maybe a good deal. But not as good as if properly terminated. I have used twisted pair here with good success, but there is some luck involved if the pairs are not properly terminated. 73 de dave ab9ca/4 On 5/9/16 12:03 PM, Jim Brown wrote: On Mon,5/9/2016 9:41 AM, Lynn W. Taylor, WB6UUT wrote: If we're talking DC levels, sure, no problem. Low rate signalling just won't matter. You're missing the fact that although these conductors INTENTIONALLY carry DC and low rate signals, they also can PICK UP RF and AF noise. Twisted pair, when used to carry a signal, is at least as powerful at rejecting RF and AF noise pickup as coax, but ONLY if the pair is dedicated to a circuit. That only happens when both ends of the cable are correctly wired. That is, OR and OR/WH will reject noise, but OR and GN will NOT. At audio levels, the shielding from twisting the wires might be helpful. It is VERY helpful. If we're actually using them for Ethernet, then the twisted pairs aren't wires, they're transmission lines. 100 megabit ethernet is running at 100 megahertz. Right. AND -- they are transmission lines at RF frequencies even when the INTENDED signal is AF or even DC. THAT'S HOW they reject RF and AF noise. Wire the cable randomly and you don't have twisted pairs (transmission lines) at VHF frequencies (or above). And you don't have them at AF or HF either. Bottom line -- CAT5 and similar cables are excellent for control wiring and even for RF, but we must ALWAYS wire them so that every circuit uses a pair. Wiring them any other way is a recipe for noise and RFI. 73, Jim K9YC 73 -- Lynn __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] elecraft,RJ45 Standard
On Mon,5/9/2016 9:41 AM, Lynn W. Taylor, WB6UUT wrote: If we're talking DC levels, sure, no problem. Low rate signalling just won't matter. You're missing the fact that although these conductors INTENTIONALLY carry DC and low rate signals, they also can PICK UP RF and AF noise. Twisted pair, when used to carry a signal, is at least as powerful at rejecting RF and AF noise pickup as coax, but ONLY if the pair is dedicated to a circuit. That only happens when both ends of the cable are correctly wired. That is, OR and OR/WH will reject noise, but OR and GN will NOT. At audio levels, the shielding from twisting the wires might be helpful. It is VERY helpful. If we're actually using them for Ethernet, then the twisted pairs aren't wires, they're transmission lines. 100 megabit ethernet is running at 100 megahertz. Right. AND -- they are transmission lines at RF frequencies even when the INTENDED signal is AF or even DC. THAT'S HOW they reject RF and AF noise. Wire the cable randomly and you don't have twisted pairs (transmission lines) at VHF frequencies (or above). And you don't have them at AF or HF either. Bottom line -- CAT5 and similar cables are excellent for control wiring and even for RF, but we must ALWAYS wire them so that every circuit uses a pair. Wiring them any other way is a recipe for noise and RFI. 73, Jim K9YC 73 -- Lynn On 5/9/2016 8:42 AM, David Robertson wrote: As long as you maintain the same standard or a standard you create on BOTH ends of the CAT 5 cable this cable could be used anywhere, regardless of the system used. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] elecraft,RJ45 Standard
Uh, maybe not. If we're talking DC levels, sure, no problem. Low rate signalling just won't matter. At audio levels, the shielding from twisting the wires might be helpful. If we're actually using them for Ethernet, then the twisted pairs aren't wires, they're transmission lines. 100 megabit ethernet is running at 100 megahertz. Wire the cable randomly and you don't have twisted pairs (transmission lines) at VHF frequencies (or above). 73 -- Lynn On 5/9/2016 8:42 AM, David Robertson wrote: As long as you maintain the same standard or a standard you create on BOTH ends of the CAT 5 cable this cable could be used anywhere, regardless of the system used. I understand that maintaining a standard of wire color codes is important for tracing and troubleshooting purposes. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] elecraft,RJ45 Standard
Close. There are 4 pair. On Monday, May 9, 2016 11:42 AM, David Robertson wrote: David Robertson 9:55 AM (1 hour ago) to kenin.stover, Elecraft Kevin, Thanks for the information on the RJ45 standards. what confuses me is there are 6 pair of wires in a CAT 5 cable. In the standards you list, the only difference is the placement of the Orange/Orange-White and Green/Green-White pair of wires. As long as you maintain the same standard or a standard you create on BOTH ends of the CAT 5 cable this cable could be used anywhere, regardless of the system used. I understand that maintaining a standard of wire color codes is important for tracing and troubleshooting purposes. From: Kevin Stover To: elecraft@mailman.qth.net Cc: Date: Mon, 2 May 2016 18:50:46 -0500 Subject: Re: [Elecraft] K3S RJ-45 Pin Alignment The standards go thusly. TIA/EIA 568-A (T568A) Pin 1 - white / green stripe Pin 2 - green Pin 3 - white / orange stripe Pin 4 - blue Pin 5 - white / blue stripe pin 6 - orange pin 7 - white / brown stripe pin 8 - brown TIA/EIA 568-B (T568B) Pin 1 - white / orange stripe Pin 2 - orange Pin 3 - white / green stripe Pin 4 - blue Pin 5 - white / blue stripe Pin 6 - green Pin 7 - white / brown stripe Pin 8 - brown -- Dave Robertson KD1NA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to wd8...@sbcglobal.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] elecraft,RJ45 Standard
David Robertson 9:55 AM (1 hour ago) to kenin.stover, Elecraft Kevin, Thanks for the information on the RJ45 standards. what confuses me is there are 6 pair of wires in a CAT 5 cable. In the standards you list, the only difference is the placement of the Orange/Orange-White and Green/Green-White pair of wires. As long as you maintain the same standard or a standard you create on BOTH ends of the CAT 5 cable this cable could be used anywhere, regardless of the system used. I understand that maintaining a standard of wire color codes is important for tracing and troubleshooting purposes. From: Kevin Stover To: elecraft@mailman.qth.net Cc: Date: Mon, 2 May 2016 18:50:46 -0500 Subject: Re: [Elecraft] K3S RJ-45 Pin Alignment The standards go thusly. TIA/EIA 568-A (T568A) Pin 1 - white / green stripe Pin 2 - green Pin 3 - white / orange stripe Pin 4 - blue Pin 5 - white / blue stripe pin 6 - orange pin 7 - white / brown stripe pin 8 - brown TIA/EIA 568-B (T568B) Pin 1 - white / orange stripe Pin 2 - orange Pin 3 - white / green stripe Pin 4 - blue Pin 5 - white / blue stripe Pin 6 - green Pin 7 - white / brown stripe Pin 8 - brown -- Dave Robertson KD1NA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] RJ45
Hi Dave, Your logic seems correct on the surface, however the CAT5 standard also states the number of twist per pair, and the placement of the different twists, on the ends also contribute to the minimizing of "crosstalk". If you aren't attempting to be strict to the standards, then any wiring will work on the jacks.. understanding that signal attenuation, and crosstalk, and capacitance between pairs, and inductance between pairs, will be affected, such that the nominal signal attenuation, as stated for 100ft, will not be attained. Have a great day, --... ...-- Dale - WC7S in Wy From: Elecraft on behalf of David Robertson Sent: Monday, May 9, 2016 7:55 AM To: kenin.sto...@mediacombb.net; Elecraft Subject: [Elecraft] RJ45 Kevin, Thanks for the information on the RJ45 standards. what confuses me is there are 6 pair of wires in a CAT 5 cable. In the standards you list, the only difference is the placement of the Orange/Orange-White and Green/Green-White pair of wires. As long as you maintain the same standard or a standard you create on BOTH ends of the CAT 5 cable this cable could be used anywhere, regardless of the system used. I understand that maintaining a standard of wire color codes is important for tracing and troubleshooting purposes. From: Kevin Stover To: elecraft@mailman.qth.net Cc: Date: Mon, 2 May 2016 18:50:46 -0500 Subject: Re: [Elecraft] K3S RJ-45 Pin Alignment The standards go thusly. TIA/EIA 568-A (T568A) Pin 1 - white / green stripe Pin 2 - green Pin 3 - white / orange stripe Pin 4 - blue Pin 5 - white / blue stripe pin 6 - orange pin 7 - white / brown stripe pin 8 - brown TIA/EIA 568-B (T568B) Pin 1 - white / orange stripe Pin 2 - orange Pin 3 - white / green stripe Pin 4 - blue Pin 5 - white / blue stripe Pin 6 - green Pin 7 - white / brown stripe Pin 8 - brown -- Dave Robertson KD1NA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to daleput...@hotmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] RJ45
Kevin, Thanks for the information on the RJ45 standards. what confuses me is there are 6 pair of wires in a CAT 5 cable. In the standards you list, the only difference is the placement of the Orange/Orange-White and Green/Green-White pair of wires. As long as you maintain the same standard or a standard you create on BOTH ends of the CAT 5 cable this cable could be used anywhere, regardless of the system used. I understand that maintaining a standard of wire color codes is important for tracing and troubleshooting purposes. From: Kevin Stover To: elecraft@mailman.qth.net Cc: Date: Mon, 2 May 2016 18:50:46 -0500 Subject: Re: [Elecraft] K3S RJ-45 Pin Alignment The standards go thusly. TIA/EIA 568-A (T568A) Pin 1 - white / green stripe Pin 2 - green Pin 3 - white / orange stripe Pin 4 - blue Pin 5 - white / blue stripe pin 6 - orange pin 7 - white / brown stripe pin 8 - brown TIA/EIA 568-B (T568B) Pin 1 - white / orange stripe Pin 2 - orange Pin 3 - white / green stripe Pin 4 - blue Pin 5 - white / blue stripe Pin 6 - green Pin 7 - white / brown stripe Pin 8 - brown -- Dave Robertson KD1NA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] RJ45 jack
On Wed, 7 Oct 2009 10:02:07 -0700, Dick Frey wrote: >I'm a new owner, and new to the list. > >The manual says: >FP ACC This connector (RJ-45, 6 pins) is located on the bottom of the >transceiver, near the VFO B knob. It is used with accessory devices. > >What are these devices and how are they connected? There's no pin definition >or reference in the schematic. The accessories are the testing devices at the factory at this time. 73, Tom, N5GE n...@n5ge.com K3 #806, K3 #1055, PR6, XV144, XV432, KRC2, W1 and other small kits. 2 W2's on order 1 K144XV on order http://www.n5ge.com http://www.swotrc.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] RJ45 jack
Dick, Welcome the the Elecraft world! Currently, there are no devices that use the RJ-45 connector. There may be in the future, but for now it is only used at the factory for tests. 73, Don W3FPR Dick Frey wrote: > I'm a new owner, and new to the list. > > The manual says: > FP ACC This connector (RJ-45, 6 pins) is located on the bottom of the > transceiver, near the VFO B knob. It is used with accessory devices. > > What are these devices and how are they connected? There's no pin definition > or reference in the schematic. > > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] RJ45 jack
I'm a new owner, and new to the list. The manual says: FP ACC This connector (RJ-45, 6 pins) is located on the bottom of the transceiver, near the VFO B knob. It is used with accessory devices. What are these devices and how are they connected? There's no pin definition or reference in the schematic. -- Dick - K4XU __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] RJ45 Older Rigblaste Mystery Solvedr
Thanks Mike and others that answered my direct e-mail queries, Well, the problem with connecting the RJ45 Rigblaster to the K-2 has been solved, and I had several PSK and RTTY contacts to HP8 and VY5 today using the Rigblaster. After I changed the Rigblaster jumpers for the Kenwood mike family, I traced schematics of the Rigblaster and K2 front panel (i.e., mike coneector) and convinced myself that the setup had to work. I then compared the wire colors at the modular jack of the original Rigblaster supplied RJ45 cable with the one that I grabbed out of the junk box. The wire colors of the RJ 45 junk box cable were exactly opposite of the Rigblaster cable. I was actually grounding the PTT and mike AF signal at the K2 mike connector. I quickly changed the wires at pins 1,2,7, and 8 of the K-2 mike connector, and I was on the air. "Cockpit error" strikes again!! S/N4751 is now on the air on CW, SSB, PKK and RTTY. SSTV is next. 73 and tnx agn, Les WA3SGZ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com