[Elecraft] BARTG contest

[TL_Netvision]

Hello All
Just to thank those who worked me (perhaps with a K2 ?) as 4X0L this last 
BARTG contest.
My K2 was a "stand by gear",  as I needed 100w  from my other rig, but I 
trust many had a ball with their K2.

73, Isaac, 4Z4TL (4X0L)

[EMAIL PROTECTED]  http://www.iarc.org/~4z4tl 



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[Elecraft] K2 - Paddle & computer co-exsiatence

[TL_Netvision]

Hello all
I have my paddle & a computer interface for keying CW connected as per the 
manual (incl 2 diodes, cathodes at the key-line, anodes at dit & dah 
terminals).
The interface is a simple switch (opto coupler 4N37) driven by DTR (RTS is 
in use by KIO2).


The problem is that I can't get proper keying from the computer unless the 
K2 is put in "Inp=Hand" mode.

Doing that the paddle is useless(only one paddle is active).
Setting back to padln - the paddle works great but than keying from the 
computer is as if pressing both dit & dah paddles. (Makes perfect sense to 
me because both diodes are pulled low).


I think the manual says that having an arrangement such as mine is 
possible because of some auto detecting done by the firmware, but that's 
not working here.

Firmware is 2.04p, IO is 1.09.

Any ideas?
Thanks in advance, Isaac, 4Z4TL, k2 #1574.

[EMAIL PROTECTED]  http://www.iarc.org/~4z4tl 



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RE: [Elecraft] K2 - Paddle & computer co-exsiatence

[TL_Netvision]

Hello
Thanks for all who advised.
Problem is now solved.
Had to use RTS and not DTR, and also changed the 1n4148 diodes to 1n5288 
(sk).

73, Isaac


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[Elecraft] K3 + SDRPlay's RSP1 as panadaptor

[TL_Netvision]

Hello all,

I am considering using an RSP1 SDR with my K3. I will probably use HDSDR
software to start with.
Can someone point me in the right direction for the whole procedure? 

TIA
Isaac, 4Z1TL 


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[Elecraft] K3 + SDRPlay's RSP1 as panadaptor

[TL_Netvision]

Hello guys,

Thanks all who have provided  very fine inputs on the matter. 

To conclude my panadaptor experience, for now It's HDSDR with a straight IF
connection from the K3 to the RSP-1. 
The only remaining issue is better calibrating the RSP-1 thus equating the
audio when one follows the other. 

SDRCONSOLE & SDRUNO were ruled out as they still have some issues working in
IF mode,

Isaac, 4Z1TL


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[Elecraft] K3 time between PTT & RF out

[TL_Netvision]

Hi all

Please advise:
What's the minimal time elapsing between a "PTT press" and "RF present at
the antenna socket"?
Is it the same when going from "PTT release" to "RF stopped" ?


TIA, 
Isaac, 4Z1TL



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[Elecraft] k3 current

[TL_Netvision]

Hi all

 

I am trying to understand power consumption of a 100W K3 (new synth., tuner
off, no 2nd receiver) at various output-power levels. 

 

1.   Voltage read by the rig is 13.6-13.8 V at all times (power
dependent).  This is OK.

2.   Current as indicated by the rig at 4 power levels (band dependent):

A.  10W:  3.6-4 Amps

B.  13W: 9-9.5 Amps  

C.  50W: 13-15 Amps

D.  99W: 21-22 Amps

 

Is this OK or normal?

 

Thanks in advance, 

Isaac, 4Z1TL



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[Elecraft] P3 Firmware update fails

[TL_Netvision]

Hi all

I am trying to upgrade a P3 MCU 1.29 to 1.54 and\or 1.60  (No SVGA option
installed).

When I hit “send checked items to P3”  the relays click every 2 seconds and
I see 2 messages repeat forever:
1.  “Attempting to connect P3 on port COM1 at 38400 bit/s” in the P3’s
utility window,
2.  ”Checking for SVGA” on the P3’s screen. 

No uploading is performed & I can terminate the loop only with the  “cancel”
button.

Environment:
-P3 utility ver 1.16.3.1
-P3 is connected only to PS (13.8v external)  & PC (Genuine full RS-232
cable).
-All files are present in the “P3 firmware” folder (Windows 10 1803 build
17134).

Any ideas please?

Thanks in advance, 
Isaac, 4Z1TL


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[Elecraft] Utilities on Linux

[TL_Netvision]

Hello all,

 

I want to install the  K3, KPA500, KAT500 & P3 utilities on a Linux
mint-18.4 computer.

Any detailed guidelines will be much appreciated.

 

TIA,

 

Isaac, 4Z1TL



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Re: [Elecraft] Utilities on Linux

[TL_Netvision]

Hi Nate,

Thanks much for all the info. A great resource indeed. 

I needed to test the P3 utility 1st, and that turned out very simple in my
case (Mint 18.3). I just downloaded the tar.gz file, unpacked it to a
dedicated library under home, made the executable "execute" & voila it
worked. The only disappointment was that again the  P3 utility couldn't
update my P3's firmware. (that's my original W10 problem, which I wanted to
confirm also on Linux.)
 
73, 
Isaac, 4Z1TL

* On 2018 19 Aug 23:40 -0500, TL_Netvision wrote:
> Hello all,
> I want to install the  K3, KPA500, KAT500 & P3 utilities on a Linux
> mint-18.4 computer.
> 
> Any detailed guidelines will be much appreciated.

Is your installation of the amd64 architecture?  On Mint the following
should work:

$ dpkg --print-architecture
amd64

Also, there is the 'arch' command.

If either command returns 'amd64', you may follow the steps I noted on my
blog:

 
https://www.n0nb.us/blog/2016/07/running-electraft-utilities-on-linux-amd64-
and-multiarch/

If either command returns 'i386' or 'i686', thne your system is 32 bit and
the utilities will run directly.  A couple of additional packages will be
required for complete functionality.

As I recently enabled multilib on Slackware, I should document that as well.

HTH,

73, Nate, N0NB

-- 

"The optimist proclaims that we live in the best of all possible worlds.
The pessimist fears this is true."

Web: http://www.n0nb.us  GPG key: D55A8819  GitHub: N0NB


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Re: [Elecraft] Utilities on Linux

[TL_Netvision]

Yes I do the same + I try a "save config." B4 I upgrade anything. 

Unfortunately my P3 probably needs a trip to California before any firmware
from any version of the utility on any architecture can be uploaded to it.  
As usual Tech support has been fantastic  - it's the findings I don't
like...hihi

73
Isaac, 4Z1TL

   
***
When I download new firmware for either the K3 or P3, I place it its own
directory which I create through the Browse button in the top part of
the Firmware tab.

Then work through the utility starting with the Port tab and the Test
Communications button to ensure you have communication to the P3.  The
latest stable P3 firmware appears to be 1.60.

73, Nate, N0NB
-- 
"The optimist proclaims that we live in the best of all
possible worlds.  The pessimist fears this is true."

Web: http://www.n0nb.us  GPG key: D55A8819  GitHub: N0NB
***


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[Elecraft] P3 config file - was utilities on Linux

[TL_Netvision]

Hello,

Speaking of configuration files, I wander if I's feasible to restore my P3
from someone else's file (In hope it's not serial-number dependent etc.).

I have a P3 (MCU 1.29, no SVGA option) for which all P3 utilities I tried
(current & earlier) fail  uploading firmware, and  don't enable Save \
Restore options.  
Would  the Restore option be enabled again had the P3 utility recognized a
valid configuration file in the library? 

I will be glad to test with someone's file . 

TIA, Isaac,
4Z1TL


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Re: [Elecraft] P3 config file - was utilities on Linux

[TL_Netvision]

That's good news. I hope I will be able to restore from a P3 config file I
received.

FWIW the P3 utility establishes communication at 38400 on the correct port &
reads the f/w version OK. I can send commands to the P3, I see the changes
in behavior, I get well behaved responses. For some reason though, Save \
Restore is grayed-out & firmware upload fails as it is stuck in a "Checking
for SVGA" loop .

Thanks for the input Dick, 73

Isaac, 4Z1TL

-הודעה מקורית-
מאת: d...@elecraft.com  
נשלח: Thursday, 23 August 2018 17:07
אל: 'TL_Netvision'‏ ; elecraft@mailman.qth.net
נושא: RE: [Elecraft] P3 config file - was utilities on Linux

The P3 can restore a config saved from another P3.  

Some of our other devices (K3, KX3...) won't do cross-serial-number config
restore if there is per-unit calibration data that would require any
significant work to re-create.

The saved-from serial # is in the configuration file, but it currently is
not used to inhibit cross-P3 restore.

If the P3 Utility cannot get through the initial connection sequence from a
P3 (read its firmware version, serial #, etc), the Config Restore button
won't be enabled.  The P3 Utility can't restore a configuration if it can't
get reasonable P3-like responses from P3 installed firmware. I'm trying to
avoid restoring a P3 configuration into a K3 or KPA500 with the P3 Utility.

73 de Dick, K6KR

-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of TL_Netvision
Sent: Wednesday, August 22, 2018 23:11
To: elecraft@mailman.qth.net
Subject: [Elecraft] P3 config file - was utilities on Linux

Hello,

Speaking of configuration files, I wander if I's feasible to restore my P3
from someone else's file (In hope it's not serial-number dependent etc.).

I have a P3 (MCU 1.29, no SVGA option) for which all P3 utilities I tried
(current & earlier) fail  uploading firmware, and  don't enable Save \
Restore options.  
Would  the Restore option be enabled again had the P3 utility recognized a
valid configuration file in the library? 

I will be glad to test with someone's file . 

TIA, Isaac,
4Z1TL


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Re: [Elecraft] P3 config file - was utilities on Linux

[TL_Netvision]

Hello all,
Just to update: my P3 still won't allow for Save \ Restore in spite having
configuration files in the proper directory.
Thanks again for the assistance here.
73, Isaac, 4Z1TL

-הודעה מקורית-
מאת: TL_Netvision  
נשלח: Thursday, 23 August 2018 22:11
אל: 'd...@elecraft.com'‏ ; 'elecraft@mailman.qth.net'‏

נושא: RE: [Elecraft] P3 config file - was utilities on Linux

That's good news. I hope I will be able to restore from a P3 config file I
received.

FWIW the P3 utility establishes communication at 38400 on the correct port &
reads the f/w version OK. I can send commands to the P3, I see the changes
in behavior, I get well behaved responses. For some reason though, Save \
Restore is grayed-out & firmware upload fails as it is stuck in a "Checking
for SVGA" loop .

Thanks for the input Dick, 73

Isaac, 4Z1TL

-הודעה מקורית-
מאת: d...@elecraft.com  
נשלח: Thursday, 23 August 2018 17:07
אל: 'TL_Netvision'‏ ; elecraft@mailman.qth.net
נושא: RE: [Elecraft] P3 config file - was utilities on Linux

The P3 can restore a config saved from another P3.  

Some of our other devices (K3, KX3...) won't do cross-serial-number config
restore if there is per-unit calibration data that would require any
significant work to re-create.

The saved-from serial # is in the configuration file, but it currently is
not used to inhibit cross-P3 restore.

If the P3 Utility cannot get through the initial connection sequence from a
P3 (read its firmware version, serial #, etc), the Config Restore button
won't be enabled.  The P3 Utility can't restore a configuration if it can't
get reasonable P3-like responses from P3 installed firmware. I'm trying to
avoid restoring a P3 configuration into a K3 or KPA500 with the P3 Utility.

73 de Dick, K6KR

-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of TL_Netvision
Sent: Wednesday, August 22, 2018 23:11
To: elecraft@mailman.qth.net
Subject: [Elecraft] P3 config file - was utilities on Linux

Hello,

Speaking of configuration files, I wander if I's feasible to restore my P3
from someone else's file (In hope it's not serial-number dependent etc.).

I have a P3 (MCU 1.29, no SVGA option) for which all P3 utilities I tried
(current & earlier) fail  uploading firmware, and  don't enable Save \
Restore options.  
Would  the Restore option be enabled again had the P3 utility recognized a
valid configuration file in the library? 

I will be glad to test with someone's file . 

TIA, Isaac,
4Z1TL


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[Elecraft] FP Mic 8 volts

[TL_Netvision]

Hello all,

While trying different front microphones (Dynamic & Electret) I noticed that
8v on pin 6 of the mic socket is always present no matter if I set bias to
on or to off.
What am I missing please?

73, Isaac, 4Z1TL



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Re: [Elecraft] FP Mic 8 volts

[TL_Netvision]

Oops... I think I messed up...It's the voltage to MIC input pin 1 that's
affected by bias on off.
Isaac, 4Z1TL

-הודעה מקורית-
מאת: TL_Netvision  
נשלח: Friday, 24 August 2018 18:54
אל: 'elecraft@mailman.qth.net'‏ 
נושא: FP Mic 8 volts 


Hello all,

While trying different front microphones (Dynamic & Electret) I noticed that
8v on pin 6 of the mic socket is always present no matter if I set bias to
on or to off.
What am I missing please?

73, Isaac, 4Z1TL



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[Elecraft] KPA500 intermittent LCD & Keying issues

[TL_Netvision]

Hello all,

My KPA500 # 1090 (driven by K3 & followed by KAT500) basically functions as
advertised at 12-35w input level. BUT the following occurs randomly (no
matter band \ mode \ power) with a tendency to repeat more often, from day
to day :

1. At some point in the operating cycle (minutes from "ON" - can be 3 or 43)
the amp will not key when  triggered by my K3.   There is a "double click"
sound similar to a relay bounce. Usually On the next PTT  from the K3 it
will key  as before, and perhaps a few cycles later this might happen again.


2. Either starting the amp from cold or after some idle time the LCD
characters dim, become unreadable  and finally disappear. The LCD remains
lit but empty. This might or might not fix itself when powering the amp off
and on again. At the  time of writing this post it is the steady state.

3. The keying issue in "1" above isn't necessarily linked to issue "2", but
sometimes both occur at the  same time.

4. So far even with empty LCD the amp is amplifying; RF & SWR LEDs indicate
expected readings. 


Any ideas please?
TIA & 73

Isaac, 4Z1TL



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Re: [Elecraft] Headphones Mixer

[TL_Netvision]

The one from the ARRL HB is not passive.but it's a fair unit if you want 
up to 3

audio sources at the same time into the headphones.
You might encounter a hiss at low audio levels though.
73, Isaac, 4Z4TL

- Original Message - 
From: "Don Wilhelm" <[EMAIL PROTECTED]>
To: "John Huffman" <[EMAIL PROTECTED]>; "Elecraft" 


Sent: Monday, August 14, 2006 18:00 PM
Subject: RE: [Elecraft] Headphones Mixer



John,

The ARRL Handbook has had a circuit like that - called 'An Expandable
Headphone Mixer'.
It is in the Station Layout and ACCessories section of the 2005 handbook 
and

has been located in various other places in prior years.

73,
Don W3FPR



-Original Message-

Anyone know of an inexpensive passive headphones mixer?  I want
to mix the audio
from my K2 with the audio from my Pegasus.

A circuit with component values would also be of help.

Not looking for anything fancy, just a knob to vary the balance in the
headphones between the rigs.

73 de K1ESE
John



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Re: [Elecraft] K2 Seven Years Old

[TL_Netvision]

I can still remember my first "ALMOST QSO" right after assembly of K2 
#1574, some 6 or 7 years ago.
I was verifying output power on 10m to my low dipole & was a bit 
disappointed to see only 8w.
But than a European station came back to my SSB "TESTING TESTING 
HLLO" with a "QRZ? PLEASE".
I was amazed and embarrassed and never completed the QSO, but it was at that 
moment that I fell in love again..
3000+ qsos later, with some improvements and touchup, and it's on my desk, 
at the front line, never to be moved away.

What a rig !
73
Isaac, 4Z4TL


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[Elecraft] KPA500problem - Half output power

[TL_Netvision]

 

Hello Elecrafters

 

Thanks for your time on this, & I hope to find you all in good health 

 

My setup is K3+KPA500+KAT500.

 

 

Sometime ago due to probably high SWR  (water in the Pl259 leading to
KAT-500) the KPA-500 stopped after a loud noise (can't tell whether KPA or
KAT) was heard. 

When I reset it & checked all bands into a dummy load (no tuner), It
delivered half the regular output power on all bands. (25w in for appx. 150w
out). 

 

I don't know if this means 1 side of the PA is gone,  or is there  some 3db
pad connected permanently.

 

Any ideas for test procedures? 

Also how safe (forbidden?) is it to operate the amp in this "half-power"
condition?

 

 

Thanks in advance, 

 

Isaac, 4Z1TL

KPA SN 01090



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[Elecraft] Schematics for KPA500 REV "B"

[TL_Netvision]

Hello all,

I have a PA board with "REV B" "silked" on it, but the schema I was supplied 
with is for  "REV A".
I know there are differences. 

Anyone has the correct schema or some errata for " REV A " please?


TIA
Isaac 

 

(FWIW – can’t tell why is it s hard to obtain a proper KPA500 
schematics? Every once in a while the question pops up & remains un-addressed.)

 



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Re: [Elecraft] Schematics for KPA500 REV "B"

[TL_Netvision]

Thanks for clarifying.

 

So what can I understand from a small white label on the board, saying this: ?


17226

0812B

OO31

 

 

I Am asking for the proper schematics because I can’t locate a certain 270 Ohm 
resistor on my physical PA board. 

This resistor appears on a “REV Ä” schematics from 02/16/11 (it’s part of the 
input attenuator I think).

 

Isaac, 4Z1TL

 

מאת: w4sc  
נשלח: Wednesday, 8 July 2020 16:28
אל: er...@netvision.net.il; elecraft@mailman.qth.net
נושא: [Elecraft] Schematics for KPA500 REV "B"

 

The “Rev” that is silkscreened on the board reflects the revision level of the 
bare board, NOT the assembly revision level of the module which will reflect 
changes made to the module and could any component, hardware, or circuit 
changes.  The module revision level should be reflected on an attached label, 
written on the pwb (i.e. “ASSY C2”) in a conspicuous location, or not(?).

 

Ben W4SC

 

Sent from Mail   for Windows 10

 



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[Elecraft] KPA500 Alignment after repair

[TL_Netvision]

Hello all,


I am about to replace myself the 2 FETs in the amp, praying for no other
damages.

Not being experienced on the subject at all, can anyone elaborate please on
the procedure to properly adjust & align the amp before usage? 


TIA & be safe

Isaac, 4Z1TL (4X2BESAFE)


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