Re: [Elecraft] K3,P3,SPE 1.3kw amp and MicroHAM interface III

[Matt Zilmer]

Try LPBridge, at www.telepostinc.com.  It's a more-or-less virtual 
Y-cable.  Read the docs first, though.  You will probably be stuck with 
9600 bps if you choose this path.


73,

matt W6NIA

==

On 5/9/2016 9:25 PM, Jerry Muller via Elecraft wrote:

Ok all you great guys.
  I have a K3 which is hooked to my P3 thru the K3  RS-232 port which is
normal and then from the P-3 to the CPU for logging.  I now have a MicroHAM
Interface III which also wants that RS-232 port.  Will a RS 232 Y cable
work? That is the first question.  The second one is  that the SPE 1.3KW wants
to run off of the RS-232 from the P-3 but so does my  logging Program. Will
a RS-232 Y cable fix this issue. I know that the speed of  the K-3 port is
48,000 baud.  How will this effect the 9600 baud rate of  the MicroHAM
interface and  the 48,000 baud rate input to the CPU for  logging and the SPE
1.3KW amp?
  
Gerald Muller K9GEM

gmuller...@aol.com
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[Elecraft] K3,P3,SPE 1.3kw amp and MicroHAM interface III

[Jerry Muller via Elecraft]

Ok all you great guys.
 I have a K3 which is hooked to my P3 thru the K3  RS-232 port which is 
normal and then from the P-3 to the CPU for logging.  I now have a MicroHAM 
Interface III which also wants that RS-232 port.  Will a RS 232 Y cable 
work? That is the first question.  The second one is  that the SPE 1.3KW wants 
to run off of the RS-232 from the P-3 but so does my  logging Program. Will 
a RS-232 Y cable fix this issue. I know that the speed of  the K-3 port is 
48,000 baud.  How will this effect the 9600 baud rate of  the MicroHAM 
interface and  the 48,000 baud rate input to the CPU for  logging and the SPE 
1.3KW amp?
 
Gerald Muller K9GEM
gmuller...@aol.com 
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Re: [Elecraft] [K2] No RCV audio...

[Don Wilhelm]

Eric,

That is indeed strange.
Go to the secondary menu and see if Squelch might be turned on.
I can't think of another reason at the moment.

73,
Don W3FPR

On 5/9/2016 10:56 PM, Eric Thielking wrote:

My K2 appears to have a receiver problem.  Specifically, I don't hear any
receive audio, unless navigating into the menu systems, at the 'OPT'
section or the 'ATU' section.

When those parts of the menu are active, receive audio can be heard.  When
one exists the menus, the audio falls off, and the s-meter indicates no
apparent RF input.




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[Elecraft] [K2] No RCV audio...

[Eric Thielking]

My K2 appears to have a receiver problem.  Specifically, I don't hear any
receive audio, unless navigating into the menu systems, at the 'OPT'
section or the 'ATU' section.

When those parts of the menu are active, receive audio can be heard.  When
one exists the menus, the audio falls off, and the s-meter indicates no
apparent RF input.

Is this a control problem (something wrong on control board)?

Tests of K2-100 LP filters, and 1N5711 diodes in the SWR circuitry appear
OK.  This radio has up until now, worked fine.


Any suggestions would be helpful.


Thanks
Eric
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Re: [Elecraft] elecraft,RJ45 Standard

[Eric Swartz - WA6HHQ, Elecraft]

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


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[Elecraft] Last call for FDIM registration

[Steve, G4GXL]

FDIM (Four Days In May) is just next week !
It is the annual convention of the QRP ARCI (QRP Amateur Radio Club
International) - you do not have to be a member to attend. FDIM happens in
Dayton, OH and just happens to run the same week as the Dayton Hamvention !

Online booking will close very soon - if you have not booked your place
please do so now.
Details of FDIM are at www.qrparci.org/fdim  -  you can register online.

Remember FDIM 2015 was a sell out !
Do not assume you can get a ticket at the event - fire regulations mean we
have strict attendance limits.

This year speakers include -


   -
*Eric Swartz, WA6HHQ (8.20am) *Elecraft - Shrinking the Multi-Mode HF
   Transceiver

   -
*Scott Cowling, WA2DFI (9.00am) *WSPR and the Raspberry Pi

   -
*Guy Hamblen, N7UN (10.00am) *2016 - The Year of the Portable Operator
   From IOTA to SOTA to NPOTA

   - *Paul Darlington, M0XPD (11.15am)*
   Occam's Scrip -
   the minimalist measurement mindset

   - *Mike Bryce, WB8VGE (2.00pm)*
   Troubleshooting and Repair Techniques

   -
*Grayson Evans, TA2ZGE/KJ7UM (3.15pm) *Thermatron Homebrew Ideas and
   Techniques

   -
*Rex Harper, W1REX (4.15pm) *The Worlds' Biggest Buildathon


Every seminar visitor gets a free kit to build during the presentation - no
tools required

73
Steve Fletcher, G4GXL
--
QRP ARCI President - www.qrparci.org
Facebook - www.facebook.com/qrparci
Twitter - www.twitter.com/qrparci
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Re: [Elecraft] elecraft,RJ45 Standard

[Lynn W. Taylor, WB6UUT]

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

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Re: [Elecraft] elecraft,RJ45 Standard

[Jim Brown]

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

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Re: [Elecraft] KX3 setting up digital

[NC3Z Gary]

I use the macros in DXLabs to do just this, when I select a digital mode 
macro it turns off the Mic PTT button and sets my BW to 4KHz (actually I 
set one DXL Commander button to toggle through a few select BWs).

Another Macro for SSB sets it back to the settings I want to use for SSB.

Probably could do this with the PF keys or the Macros on the PX3.

Gary Mitchelson
NC3Z/4 Pamlico County, NC FM15

On 09-May-16 16:18, David Orman wrote:
> Agreed re: Mic button setting, that happens to me all the time. Would it be
> possible to have it turn it off when switching to DATA A? Also, widening
> the filter BW out to the full 4kHz at the same time? Perhaps there's other
> uses of DATA A I don't know that might make these requests invalid, so
> forgive me if so. :)
>
> Thanks!
> David / K5DJO
>
>
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Re: [Elecraft] elecraft,RJ45 Standard

[dave]

> 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


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Re: [Elecraft] KX3 setting up digital

[David Orman]

Agreed re: Mic button setting, that happens to me all the time. Would it be
possible to have it turn it off when switching to DATA A? Also, widening
the filter BW out to the full 4kHz at the same time? Perhaps there's other
uses of DATA A I don't know that might make these requests invalid, so
forgive me if so. :)

Thanks!
David / K5DJO

On Sun, May 8, 2016 at 3:32 PM, Erlend Grimseid  wrote:

> When i tested, mic bias remained on when switching to  data mode.  And it
> is annoying because when using the radio with an smart phone the plug is
> not recognised as an 4pole plug for some reason.
>
> Also mic button settings can't be changed.  So every time i go from hand
> mic to phone I forget,  the stereo plug triggers the ptt, and I have to
> switch back to ssb to make changes.
>
> I wold love to be able to change mic settings in data mode.  And that mic
> level, button and bias settings to be stored pr mode.
>
> Something for the next firmware maybe?
>
> 73
> La4tta
> Erlend.
> 8. mai 2016 4:47 p.m. skrev "Bill Frantz" :
>
> > I had to set up my KX3 for digital operation with a SignaLink USB from
> > scratch again, and I had to learn the same "features" which tripped me up
> > the last time over again the hard way. I'm documenting them here in
> hopes I
> > won't forget them the next time. (I'm also writing them on a file card to
> > keep with the radio.)
> >
> > (1) High levels of Mic input show up as zero signal. The fix is to always
> > start from 0 and move slowly up in levels. Mic level 5 seems to be about
> > right for my setup.
> >
> > (2) You can't be in a digital mode (DATA A etc.) and turn off mic bias.
> > All you get is N/A. It seems to be a poor idea to DC bias the isolation
> > transformers in the SignaLink, so you really need it off. And of course,
> > voice modes won't work until you turn mic bias back on again.
> >
> > In an ideal world, the level, bias, and VOX settings would be saved
> > separately for Data and Voice modes. (And the radio would recognize that
> > mic input settings need to be made in data modes.)
> >
> > But the results are worth it. From New Hampshire, I've been able to work
> > 14 DXCCs including an ATNO. I also had a long rag chew with AE5ZA in
> Texas,
> > all on 20M PSK31/63 with only a few hours of operating.
> >
> > 73 Bill AE6JV
> >
> >
> ---
> > Bill Frantz|"We used to quip that "password" is the most common
> > 408-356-8506   | password. Now it's 'password1.' Who said users
> > haven't
> > www.pwpconsult.com | learned anything about security?" -- Bruce Schneier
> >
> > __
> > Elecraft mailing list
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> > Message delivered to egrims...@gmail.com
> >
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Re: [Elecraft] KXPD1 as a sideswiper?

[Don Wilhelm]

John,

Certainly, but it is a permanent change (until changed back) and 
requires soldering.
Leave the wire to the dot side board (the one connected to the tip of 
the plug - use your ohmmeter) connected, but remove the wire to the dash 
side (goes to the ring).

Then wire the dot side and dash side boards together.

Set the INP menu to HND and swipe away.

73,
Don W3FPR

On 5/9/2016 2:53 PM, John Flynn wrote:

Good Day Everyone,

Is it possible to re-jigger the KXPD1 as a sideswiper (not a straight key)?




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[Elecraft] KXPD1 as a sideswiper?

[John Flynn]

Good Day Everyone,

Is it possible to re-jigger the KXPD1 as a sideswiper (not a straight key)?

Tnx es 72/73,

John K4ARQ

-- 
John Flynn
Tallahassee, Florida
USA
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Re: [Elecraft] KX3 internal battery problems

[Mark , ars : KE6BB via Elecraft]

Re: With increasing cycle count, individual cells are showing differences.

Cycle count agravates the differences, but the most common CAUSE is a failure 
to FULLY CHARGE the series set of cells, so some of the cells never reach their 
FULLY CHARGED voltage.  Damage occurs during use as the cells are discharged.  
The cells that were not fully charged reach the damaging voltage of <1.0V per 
cell first, possibly before the KX3 low voltage warning is set.  Below that 
voltage, they will be damaged and will never again have the capacity of the 
good cells.

Re:  If you don't charge them individually, these differences are getting 
bigger, as reflected by the numbers you posted.

Individual cell charging is one way to prevent damage, but the KXBC3 can manage 
this problem as well, saving the cost and trouble of an external charger.  When 
charged with a properly designed constant current charger such as the KXBC3, 
NiMH cells in a series configuration are self leveling.  Cells with a higher 
charge will reach their fully charged CHARGING voltage of about 1.5v per cell 
(varies somewhat with temperature, charge rate, etc.) and then level off.  The 
lower voltage cells will then continue to rise to a similar FULLY CHARGED 
voltage if they are healthy.  Eventually they will all be at the CHARGING 
voltage.  With the KXBC3's 200mA rate, 12 hours will usually do it for 2000mAH 
cells, and 16 hours for 2500mAH cells.

I do not mean to knock external chargers or battery managers.  I am simply 
saying that YOU, along with the KXBC3, can learn to manage rechargable NiMH 
cells.  This hobby is about learning, isn't it?  BTW, I just checked my 3.5 yr. 
old Eneloop 2000 LSD cells, and they are all within .04V resting.  I never 
disharge the set below 8.8V.

Mark,
ars:  KE6BB
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Re: [Elecraft] elecraft,RJ45 Standard

[Jim Brown]

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.


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Re: [Elecraft] elecraft,RJ45 Standard

[Lynn W. Taylor, WB6UUT]

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.



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Re: [Elecraft] elecraft,RJ45 Standard

[Philip Carter]

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
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[Elecraft] elecraft,RJ45 Standard

[David Robertson]

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
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Re: [Elecraft] FS: Elecraft K2/100

[David Inger]

I have decided to temporarily suspend my for sale offer.  I want to make
sure that the radio is up to spec in everyway before I can feel confident
that the new buyer is getting what he/she pays for.
 
Tnx es 73 de K6SBA
David in Santa Barbara, CA
 
 
 
I have an extremely clean K2 (100 w version) for sale. I am the second
owner. The construction is very professional, and the radio functions
without any problems.  It is a 3100+ serial number with the Rev "B"
mainboard.  All additional Elecraft updates have been made to bring the
radio up to current standards. Installed options (in addition to the 100-w
module) include the KSB2 SSB adapter, KNB2 noise blanker and KAF2 audio
filter and real-time clock. 
 
The VFO has been fitted with a slightly larger and more comfortable knob
with a rubber ring and finger hole. The radio has never been around tobacco
smoke.  I will also include a Kenwood MC-43S hand mic, a serial cable for
pc-to-radio interface, and a fused power cord fitted with Anderson
PowerPoles. 
 
All manuals and upgrade documents are included.  Pictures are available.
This is a great performing radio!  $700 firm plus shipping from Santa
Barbara, CA. 
 
73 de K6SBA
David in Santa Barbara
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[Elecraft] Elecraft, Other equipment review.

[David Robertson]

I noticed many complaints about other non elecraft equipment mentioned on
this forum. I feel that commenting on non Elecraft equipment here is a good
way of propagate interesting information. Care must be taken to not dwell
on this topic too long but a brief mention of other equipment I think makes
this forum interesting.
73

-- 
Dave Robertson KD1NA
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Re: [Elecraft] RJ45

[Dale Putnam]

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
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[Elecraft] RJ45

[David Robertson]

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
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Re: [Elecraft] I get the digest; how can I get to all the other postings?

[Peter Eijlander (PA0PJE)]

Hi Jerry,

Try Nabble.

Is this maybe what you are looking for?

http://elecraft.365791.n2.nabble.com/Field-Day-tips-td7590292.html#a7590298

In this thread you were one of the posters but you can search Nabble.

If you just would search K9YC you will need some extra time to read all 
of Jim's posts...:-)

"Found 4931 matching posts for k9yc in Elecraft"

Oh and it's Bioenno, not Bienno.

73,
Peter - PA0PJE

Op 2016-05-09 06:08 schreef jso...@comcast.net:

Hello,

I've asked this question a couple years ago and received an answer, which 
worked but I no longer remember it.
S ince then, the digest has been all I needed.
But today I want to look at the other postings, specifically about Bienno 
battery postings by K9YC.
How can I get to them?
TIA for any reply.

73 Jerry KM3K

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Re: [Elecraft] KX3 internal battery problems

[LA7NO]

Hi Markus,

thanks for interesting info.

Discharge was with 100 mA.

I am using a TechnoLine BC-1000 charger. It handles the 4 cells
individually.
Max. charging current is 1.500 mA, discharge current max 500 mA - all
selectable,.
Seems to work quite well.

Per-Tore / LA7NO



On 9 May 2016 at 11:07, hb9brj [via Elecraft] <
ml-node+s365791n7617307...@n2.nabble.com> wrote:

> Per-Tore,
>
> With increasing cycle count, individual cells are showing differences. If
> you don't charge them individually, these differences are getting bigger,
> as reflected by the numbers you posted.
>
> You mentioned that you verified cell capacity using your charger. At what
> discharge current? Most probably not at the 1.5A which the KX3 draws when
> transmitting.
>
> While powering my KX3 with 8 internal Eneloop cells and varying output
> power, I found a total internal resistance of 1.15 Ohms. A single Eneloop
> cell showed 34mOhm (I have an instrument measuring Ri by applying short
> discharge current pulses). In total, only 25% of the total Ri comes from
> the 8 cells. Battery holder and wiring are responsible for 75%.
>
> 73, Markus HB9BRJ
>
>
>
> --
> If you reply to this email, your message will be added to the discussion
> below:
>
> http://elecraft.365791.n2.nabble.com/KX3-internal-battery-problems-tp7617201p7617307.html
> To unsubscribe from KX3 internal battery problems, click here
> 
> .
> NAML
> 
>




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Re: [Elecraft] KX3 internal battery problems

[hb9brj]

Per-Tore,

With increasing cycle count, individual cells are showing differences. If
you don't charge them individually, these differences are getting bigger, as
reflected by the numbers you posted.

You mentioned that you verified cell capacity using your charger. At what
discharge current? Most probably not at the 1.5A which the KX3 draws when
transmitting.

While powering my KX3 with 8 internal Eneloop cells and varying output
power, I found a total internal resistance of 1.15 Ohms. A single Eneloop
cell showed 34mOhm (I have an instrument measuring Ri by applying short
discharge current pulses). In total, only 25% of the total Ri comes from the
8 cells. Battery holder and wiring are responsible for 75%.

73, Markus HB9BRJ





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