[Elecraft] [K3] The Way We Rank Receivers (long)

[Al Lorona]

Receivers are always ranked by the "2 kHz third order dynamic range", such as 
at: http://www.remeeus.eu/hamradio/pa1hr/productreview.pdf  but do we really 
grasp the meaning of these specs? For instance, the Elecraft K3's (after 
synthesizer upgrade) number is 103 dB, good enough to be in the top ten. In 
fact, this number is so strong that very few hams will ever be affected by it. 
To the best of my knowledge, I have *never* been close to running out of 
dynamic range. To understand why, let's put "103 dB" into English.

Let's say you're on 20 meter CW, operating at 14.050 MHz. You're listening 
through your fine Elecraft 500 Hz crystal filter when suddenly, and by 
incredible coincidence, two equally strong 49 dB over S9 signals begin 
transmitting at the exact same time, one on 14.052 and the other at 14.054 MHz, 
exactly 2 kHz and 4 kHz up from where you're listening. With the preamp off 
(which is totally believeable on 20 meters with a decent antenna) you will just 
barely hear a "ghost signal" right at the noise level... if you notice it at 
all. That "ghost" signal is the two-tone, 3rd order intermod product generated 
in the K3 receiver by those two hugely strong and perfectly placed signals.

Not a very likely scenario, but that's what 103 dB of dynamic range buys you.

I have assumed a noise floor or MDS of -130 dBm because it's a nice round 
number. If your 20 meter noise floor is higher than this, then the two signals 
would have to be *even stronger* to hear the intermod come out of the noise.

Even if each of those interferers was *60* dB over S9 -- pegging the S-meter-- 
the intermod product on 14.050 would still be only S5. Amazing. This kind of 
performance begs the question, "How much more dynamic range is really needed?" 
and some (like Rob Sherwood) have said that once you're above 90 dB, you 
already have enough, at HF at least.

Perhaps it's time to rank receivers by a different measurement, something that 
affects more of us. Looking through the table at the link above we see another 
measurement called "2 kHz blocking gain compression" and for the same K3 it is 
143 dB. This is a measurement not of two interfering signals, but a single 
interferer just 2 kHz away. Since there's only one signal, it won't generate a 
"ghost", but it will reduce the gain of the receiver. ARRL defines this as the 
signal level that reduces the gain by 1 dB. One dB is really small, something 
like changing your RF Gain knob from the 3:00 o'clock position to maybe the 
2:45 o'clock position. Barely noticeable. Nonetheless, for our K3 the signal 
required to do this is about +13 dBm, or 20 milliwatts, which is probably near 
the damage level of the receiver! (I'm quite sure that Wayne has made 
intercontinental QSOs at 20 mW.) It's a theoretical value that very, very few 
hams would ever encounter... only the ones living next door to
  a guy running a kilowatt. So this measurement is even less relevant to us.

Finally, we notice a measurement called "2 kHz reciprocal mixing dynamic range" 
-- probably the limiting spec nowadays for top tier receivers. In our example 
of the single strong signal, way before reducing the gain of the receiver, that 
signal will have another effect: it will mix with the phase noise of the K3's 
own local oscillator and deposit that phase noise right onto your desired 
frequency of 14.050 MHz. As you're listening there, you suddenly notice that 
the noise floor seems to be rising for no apparent reason. You listen some 
more, and notice that the noise is following some kind of CW keying. You glance 
at your panadapter and notice an enormous signal just 2 kHz away on 14.052. So 
there are two culprits: that strong signal, and the K3 oscillator phase noise. 
The K3 with upgraded synths has a spec of "-115 dBc", again near the top of the 
list, which means that a signal 2 kHz away and 115 dB above the noise floor 
will cause the noise floor to rise by 3 dB. For a K3 n
 oise floor of -130 dBm this is -15 dBm, or about 60 dB over S9. The reason I 
say this is the limiting factor is because the chance of just one 60 dB over S9 
signal nearby is greater than *two* of them at the right spacing as in our 
discussion of 3rd order DR.

For these reasons, we could start ranking receivers by 2 kHz reciprocal mixing 
dynamic range because reciprocal mixing is far more likely to happen to a 
larger number of hams. It's not a catastrophic effect, but it's quite 
noticeable. There's a problem, however, because sampling receivers don't follow 
the classical reciprocal mixing model. We need a measurement that hasn't been 
invented yet to compare modern receivers. Maybe we could simulate the 
worst-case contest by applying thousands of signals and noise to the receiver 
and seeing how much junk is generated to cover up the signal you're trying to 
copy at 14.050, something kinda like the noise power ratio test. But in order 
to compare apples to apples, the exact same test conditions must be 

Re: [Elecraft] Heil Pro 7 K3s Setup

[Carl Jón Denbow]

Update:  Problem was not actually solved.  Pro 7 appears to be 
defective.  I've setup an older ProSet headset FB with the K3s, but Pro 
7 will not produce even the slightest amount of ALC no matter where Mic 
Gain is set. I was fooled because I was seeing CMP flicker not ALC 
bars.  Older ProSet setups FB according to manual directions.  I'm 
writing a note to Bob Heil to see what he will do to make this right.  
I'm sure he'll be fair, as he always is.  -- 73 Carl N8VZ



Carl Jón Denbow 
October 19, 2016 at 12:39 PM
Thanks, Matt.  Problem solved.  Actually, it wasn't a problem.  I had 
the display setup to show CMP and ALC when I thought it was showing 
SWR and RF.  Talk about being stupid!  If I was a woman, I'd caulk it 
up to a bad hair day. ;-) 73 de Carl N8VZ



Carl Jón Denbow 
October 19, 2016 at 12:35 PM
Thanks, Matt.  Problem solved.  Actually, it wasn't a problem.  I had 
the display setup to show CMP and ALC when I thought it was showing 
SWR and RF.  Talk about being stupid!  If I was a woman, I'd caulk it 
up to a bad hair day. ;-) 73 de Carl N8VZ



Matt Zilmer 
October 19, 2016 at 12:17 AM
Check p50 of the Owner's Manual, or alternatively, search for 
"Miscellaneous Setup" and read down from there, under the Mic Gain / 
Bias heading.


73,

matt W6NIA




Carl Jón Denbow 
October 18, 2016 at 10:04 PM
I need some help setting up a Heil Pro 7 with my K3s.  I have the 
physical connection to the back of the rIg OK.  I'm hearing through 
the earphones FB.  However, on TX I'm getting very little modulation. 
 If someone else on this reflector has made this setup, I'd appreciate 
them sharing their Config setup.


Thanks.

73,

Carl

Sent from my iPhone

===

Carl Jón Denbow, N8VZ

17 Coventry Lane

Athens, Ohio 45701-3718

c...@n8vz.com 

www.n8vz.com 

EM89wh

IRLP 4533   Echolink 116070

PSK and JT65 Forever!

===




Sent from my iPhone

===

Carl Jón Denbow, N8VZ

17 Coventry Lane

Athens, Ohio 45701-3718

c...@n8vz.com 

www.n8vz.com 

EM89wh

IRLP 4533   Echolink 116070

PSK and JT65 Forever!

===



Sent from my iPhone

===

Carl Jón Denbow, N8VZ

17 Coventry Lane

Athens, Ohio 45701-3718

c...@n8vz.com 

www.n8vz.com 

EM89wh

IRLP 4533   Echolink 116070

PSK and JT65 Forever!

===



--
==
Carl Jón Denbow, N8VZ
17 Coventry Lane Athens, Ohio 45701-3718
c...@n8vz.com
www.n8vz.com

EM89wh
IRLP 4533 Echolink 116070

PSK and JT65 Forever!
==
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Re: [Elecraft] (no subject)

[Don Wilhelm]

Danny,

You will find that in the firmware release notes.  This one is from MCU 
5.33 dated Aug 2015.
"To turn on safe mode on/off, go into CONFIG:PTT-KEY and tap '1' to 
select "USB SAFE" or "UNSAFE". Exit the menu and turn the K3S off/on."


When upgrading firmware, it is always a good idea to review the firmware 
release notes between your present level and the new level being loaded 
- that way you will know about things like this and should have no 
surprises.


These recent changes have not made it into the manual yet.  Consider the 
firmware release notes as updates to the manual.


73,
Don W3FPR


On 10/24/2016 1:23 PM, danny.higg...@keme.co.uk wrote:

I have the same problem. There is a Safe Mode (somewhere?) which allows you to 
do this, otherwise the K3S goes to transmit when controlled by USB and the PC 
is turned off.


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Re: [Elecraft] KAT-500 Not Attempting to Tune

[Nr4c]

Be sure KAT500 is ON before powering up the K3. 

Sent from my iPhone
...nr4c. bill


> On Oct 24, 2016, at 9:05 PM, Byron Peebles  wrote:
> 
> When I powered on the station tonight, I noticed nothing unusual, except I 
> had no power out.
> 
> My KAT-500 makes no attempt to tune when I use the K3S tune button.
> 
> I've checked all cables, updated KAT firmware, restored configuration, no 
> change.
> 
> When I first received this in 2015, a power-cycle solved this, but not this 
> time.
> SWR fluctuates 11-20 on the K3S display.
> 
> Any ideas?  All other functions seem to work, except this rather important 
> one.
> 
> CQWW SSB this weekend.  I need this working.
> 
> 73, Byron
> 
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Re: [Elecraft] Magnetic Loop Performance

[Fred Jensen]

What does 48" mean?  Diameter? radius? circumference?

Where did the 51 pf value come from.  Most small mag loops have variable 
caps to tune them.


What is the "balun" you mention?

"4 turn coil around the copper pipe?"  Not sure what you mean.

Small mag loops are pretty simple, and very well characterized.  Most 
are fed as resonant transformers.


More info would really help.

73,

Fred K6DGW
- Sparks NV DM09dn

- Northern California Contest Club
- CU in the Cal QSO Party 7-8 Oct 2017
- www.cqp.org

On 10/24/2016 5:22 PM, johnpierce wrote:

I could use some help with a MagLoop.  I constructed a 48" loop from 3.8"
copper pipe.  I have a 51 pf capacitor across the open end of the loop.  I
am feeding the loop with a 4 turn coil around the copper pipe opposite of
the capacitor.  Before checking the loop I tested a carbon resistor on the
balun (ant side).  Using a 50ohm resistor on the ant side of a 1:1 Balun
which was fed with a 2' piece of 50 ohm coax and with the loop disconnected
I get the following readings from a MFJ 259B antenna analyzer:


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[Elecraft] KAT-500 Not Attempting to Tune

[Byron Peebles]

When I powered on the station tonight, I noticed nothing unusual, except 
I had no power out.


My KAT-500 makes no attempt to tune when I use the K3S tune button.

I've checked all cables, updated KAT firmware, restored configuration, 
no change.


When I first received this in 2015, a power-cycle solved this, but not 
this time.

SWR fluctuates 11-20 on the K3S display.

Any ideas?  All other functions seem to work, except this rather 
important one.


CQWW SSB this weekend.  I need this working.

73, Byron

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Re: [Elecraft] Magnetic Loop Performance

[Bob Novas]

John  - when you say 4 turn coil around the copper pipe, what exactly do you
mean?  What I'm wondering is, what is the orientation of the 4 turn loop
with respect to the copper tubing loop?  You don't mean that you wound the 4
turns around the copper pipe do you?  The two loops should be in the same
plane, perhaps offset, but you should be able to stick a rod through both
loops.

Bob - W3DK

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of
johnpierce
Sent: Monday, October 24, 2016 8:23 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] Magnetic Loop Performance

I could use some help with a MagLoop.  I constructed a 48" loop from 3.8"
copper pipe.  I have a 51 pf capacitor across the open end of the loop.  I
am feeding the loop with a 4 turn coil around the copper pipe opposite of
the capacitor.  Before checking the loop I tested a carbon resistor on the
balun (ant side).  Using a 50ohm resistor on the ant side of a 1:1 Balun
which was fed with a 2' piece of 50 ohm coax and with the loop disconnected
I get the following readings from a MFJ 259B antenna analyzer:

 

Freq  Resistance  X

9.7mhz 66ohm0

10  680

12  770

14  890

17  109  0

21  126  0

27  128  0

27.6   780

 

Reattaching the feed coil and the balun I get the following readings

Freq  Resistance  X

9.7mhz 18ohm77

10  2081

12  43119

15  163  203

16  303  282

16.5   406  120

16.56440  0

17  547  0

21  >650

21.3   467  114

24  95191

27  38129

27.6   34120

29.1   21104

 

I ran all these test trying to find out what the resonance is for my 51pf
capacitor.  Rather

than helping me, I am more confused.  I was not finding anything like the
normal response

I have been led to believe I should experience with a magloop.  E.g. peek
noise at the resonance frequency.

 

John

AD2F

 

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[Elecraft] Magnetic Loop Performance

[johnpierce]

I could use some help with a MagLoop.  I constructed a 48" loop from 3.8"
copper pipe.  I have a 51 pf capacitor across the open end of the loop.  I
am feeding the loop with a 4 turn coil around the copper pipe opposite of
the capacitor.  Before checking the loop I tested a carbon resistor on the
balun (ant side).  Using a 50ohm resistor on the ant side of a 1:1 Balun
which was fed with a 2' piece of 50 ohm coax and with the loop disconnected
I get the following readings from a MFJ 259B antenna analyzer:

 

Freq  Resistance  X

9.7mhz 66ohm0

10  680

12  770

14  890

17  109  0

21  126  0

27  128  0

27.6   780

 

Reattaching the feed coil and the balun I get the following readings

Freq  Resistance  X

9.7mhz 18ohm77

10  2081

12  43119

15  163  203

16  303  282

16.5   406  120

16.56440  0

17  547  0

21  >650

21.3   467  114

24  95191

27  38129

27.6   34120

29.1   21104

 

I ran all these test trying to find out what the resonance is for my 51pf
capacitor.  Rather

than helping me, I am more confused.  I was not finding anything like the
normal response

I have been led to believe I should experience with a magloop.  E.g. peek
noise at the resonance frequency.

 

John

AD2F

 

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Re: [Elecraft] Where to find K-Pod Utility and K-Pod firmware?

[Keith Onishi]

Thanks Paul for the information.
I hope they will be released very soon.

73 de JH3SIF, Keith

> 2016/10/25 0:39、n6hz  のメール：
> 
> Hi Keith, 
> 
> Version 1.09 of K-Pod firmware and the new K-Pod Utility will be available
> very shortly (hopefully this week). 
> Note that you will also need the latest K3 firmware as well. 
> 
> Kindly, 
> 
> Paul
> 
> 
> 
> 
> 
> --
> View this message in context: 
> http://elecraft.365791.n2.nabble.com/Where-to-find-K-Pod-Utility-and-K-Pod-firmware-tp7623608p7623625.html
> Sent from the Elecraft mailing list archive at Nabble.com.
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Re: [Elecraft] KPA500/KAT500 paired with AL-1500?

[Edward R Cole]

Just warning about the CX-600NL.  I initially used them for TR relays 
on 2m-eme at 100w to 600w with no problems but once I increased power 
to >800w the relays began to fail.  The contacts apparently not able 
to carry higher RF current as they eventually heat and melt the 
center wiper usually such that it shorts the coaxial section -- Not a 
nice thing to do to a 1500w amp.  As I said I have had three fail this way.


I use sequencing so absolutely not due to hot switching (at least 
30msec delay before RF applied).


Maybe they will handle HF power better (I do not have HF QRO).  Also 
when running 2m-eme my 8877 is key down for 50-seconds under JT65 and 
key up for 70-seconds, which repeats as long as in transmit.  So this 
is "almost" Alpha brick testing!


When one of the relays shorted I noted that my 8877 output went to 
1800w and drew over an amp at 3000v.  Fortunately I noted this 
quickly and shut it down.  Grid current was higher but apparently no 
harm to the 8877 (what a really tough tube  -- I have eight years 
running on the same tube).  I use a G3SEK Triode Board for bias, 
warm-up delay and overcurrent protection for both anode and grid.


Two coax relays probably work as well as a transfer relay for the two 
amp application.  Make sure the output relay can handle the max power.


I have one surviving CX600NL which is used to select either 1296 amp 
or 900 amp at my tower top (both low power level drive input for the 
amps).  I now use NARDA sem123N (1200w at 150-MHz) in the high power ckts.


73, Ed -KL7UW

From: "Joe Subich, W4TV" 
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA500/KAT500 paired with AL-1500?
Message-ID: <3bc97592-0eac-519c-11c9-2ac21fd49...@subich.com>
Content-Type: text/plain; charset=utf-8; format=flowed


A pair of the Tohtsu CX-600NL relays from Surplus Sales of Nebraska

should work just fine.  It would likely take a pair of transfer relays
- one on the input and one on the output of the amplifiers to do the
same thing.

The only advantage of transfer relays is that the unused amplifier
could be kept terminated in a dummy load.

73,

... Joe, W4TV

73, Ed - KL7UW
http://www.kl7uw.com
"Kits made by KL7UW"
Dubus Mag business:
dubus...@gmail.com

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Re: [Elecraft] (no subject)

[danny.higgins]

I have the same problem. There is a Safe Mode (somewhere?) which allows you to 
do this, otherwise the K3S goes to transmit when controlled by USB and the PC 
is turned off.

Regards,

Danny Higgins

From: Jeff
Sent: 24 October 2016 14:24
To: Elecraft@mailman.qth.net
Subject: [Elecraft] (no subject)

Good morning.  I am having a problem getting my K3S to save in the config menu 
the setting for PTT-PTT. When I set it for RTS-DTR, hit menu it works fine.  
Then I turn the radio off and back on and the PTT-PTT setting is back to 
OFF-OFF. What am I doing wrong? How do I get the Config menu to save the 
PTT-PTT setting to RTS-DTR?  

Tnx Jeff W7JW  
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Re: [Elecraft] PTT reset default power down

[Dimitry Borzenko]

Hi.
Gene - thank you!!!
I do not need to change setting to  "UNSAVE" mode.
When my log connected with K3S -  PTT setting is returned as was set.
Excellent "Safe mode"  add-on !!

Regards.
  
-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jeff
Sent: Monday, October 24, 2016 6:43 PM
To: n...@comcast.net; Elecraft@mailman.qth.net
Subject: Re: [Elecraft] PTT reset default power down

Winner, Winner chicken Dinner!!!  Tnx Gene for providing what seems to be the 
answer to my problem. By selecting the Unsafe  mode in the Config menu for the 
USB port as described below, the K3S now works in RTS-DTR every time.  I 
appreciate your help. This group is truly something else when it comes to 
helping each other out. Not necessarily included in the price of the radio, but 
one of the benefits of owning an Elecraft product.  Tnx agn to All who replied 
directly and through the Elecraft reflector.

Best 73 Jeff W7JW

From: n...@comcast.net
Sent: Monday, October 24, 2016 11:00 AM
To: Jeff
Subject: Re: PTT reset default power down

Hi Jeff,


Try this,

PTT/KEY USE WITH THE USB PORT IMPROVED:

Some PC applications can control PTT and KEY at the K3S via the RTS/DTR signals 
of the USB port. However, use of these signals may also allow

the PC s USB port initialization to unexpectedly activate transmit at the K3S. 
This can happen if the

computer is turned on

after the K3S, or if the USB cable is not connected. There is now a "Safe" mode 
(the default) which disables PTT-KEY transmit until the K3S receives a command 
via USB, such as a

read of the rig's VFO frequency.

To turn on safe mode on/off, go into CONFIG:PTT-KEY and tap '1' to select "USB 
SAFE" or "UNSAFE". Exit the menu and turn the K3S off/on.

Applications that use PTTKEY
via USB but never send commands

may require "UNSAFE" mode. In this case, unwanted transmit can be avoided by 
turning the PC on

before the K3S.

http://www.elecraft.com/manual/E740258E%20K3S%20Owner's%20man%20errata%20A1-2.pdf

73, Gene N9TF
K3S 10057




From: "Jeff" 
To: "elecraft" 
Sent: Monday, October 24, 2016 8:24:14 AM
Subject: [Elecraft] (no subject)


Good morning.  I am having a problem getting my K3S to save in the config menu 
the setting for PTT-PTT. When I set it for RTS-DTR, hit menu it works fine.  
Then I turn the radio off and back on and the PTT-PTT setting is back to 
OFF-OFF. What am I doing wrong? How do I get the Config menu to save the 
PTT-PTT setting to RTS-DTR?  


Tnx Jeff W7JW
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Re: [Elecraft] (no subject)

[Jim Finan]

Did you use the K3S' Power Button to power down? If not, settings may not be 
saved.

Jim Finan
AB4AC 
Sent from my BlackBerry 10 smartphone.
  Original Message  
From: Jeff
Sent: Monday, October 24, 2016 9:25 AM
To: Elecraft@mailman.qth.net
Reply To: Jeff
Subject: [Elecraft] (no subject)

Good morning. I am having a problem getting my K3S to save in the config menu 
the setting for PTT-PTT. When I set it for RTS-DTR, hit menu it works fine. 
Then I turn the radio off and back on and the PTT-PTT setting is back to 
OFF-OFF. What am I doing wrong? How do I get the Config menu to save the 
PTT-PTT setting to RTS-DTR? 

Tnx Jeff W7JW 
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Re: [Elecraft] PTT reset default power down

[Jeff]

Winner, Winner chicken Dinner!!!  Tnx Gene for providing what seems to be the 
answer to my problem. By selecting the”Unsafe” mode in the Config menu for the 
USB port as described below, the K3S now works in RTS-DTR every time.  I 
appreciate your help. This group is truly something else when it comes to 
helping each other out. Not necessarily included in the price of the radio, but 
one of the benefits of owning an Elecraft product.  Tnx agn to All who replied 
directly and through the Elecraft reflector.

Best 73 Jeff W7JW

From: n...@comcast.net 
Sent: Monday, October 24, 2016 11:00 AM
To: Jeff 
Subject: Re: PTT reset default power down

Hi Jeff,


Try this,

PTT/KEY USE WITH THE USB PORT IMPROVED:

Some PC applications can control PTT and 
KEY at the K3S via the RTS/DTR signals of the USB port. However, use of these 
signals may also allow

the PC’s USB port initialization to unexpectedly activate transmit at the K3S. 
This can happen if the

computer is turned on

after the K3S, or if the USB cable is not connected. There is now a "Safe" mode 
(the default) which disables PTT-KEY transmit until the K3S receives a command 
via USB, such as a

read of the rig's VFO frequency.

To turn on safe mode on/off, go into CONFIG:PTT-KEY and tap '1' to 
select "USB SAFE" or "UNSAFE". Exit the menu and turn the K3S off/on.

Applications that use PTTKEY 
via USB but never send commands

may require "UNSAFE" mode. In this case, unwanted 
transmit can be avoided by turning the PC on

before the K3S.

http://www.elecraft.com/manual/E740258E%20K3S%20Owner's%20man%20errata%20A1-2.pdf

73, Gene N9TF
K3S 10057




From: "Jeff" 
To: "elecraft" 
Sent: Monday, October 24, 2016 8:24:14 AM
Subject: [Elecraft] (no subject)


Good morning.  I am having a problem getting my K3S to save in the config menu 
the setting for PTT-PTT. When I set it for RTS-DTR, hit menu it works fine.  
Then I turn the radio off and back on and the PTT-PTT setting is back to 
OFF-OFF. What am I doing wrong? How do I get the Config menu to save the 
PTT-PTT setting to RTS-DTR?  


Tnx Jeff W7JW  
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Re: [Elecraft] Where to find K-Pod Utility and K-Pod firmware?

[n6hz]

Hi Keith, 

Version 1.09 of K-Pod firmware and the new K-Pod Utility will be available
very shortly (hopefully this week). 
Note that you will also need the latest K3 firmware as well. 

Kindly, 

Paul





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Re: [Elecraft] (no subject)

[Dimitry Borzenko]

Hello.
Have check now and find - PTT setting is not saved.
I have set it to RTS-OFF, after turning off (by power button, not by power
supply) and turning on again -  setting of PTT is  OFF-OFF.
s/n of TRX is 10944 with firmware 5.50.

Regards.


-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Don
Wilhelm
Sent: Monday, October 24, 2016 5:14 PM
To: Jeff ; Elecraft@mailman.qth.net
Subject: Re: [Elecraft] (no subject)

Jeff,

I have no idea what you are doing wrong, but here are a few thoughts:
After making the menu change, are you exiting from the menu? Tap the MENU
button.
Are you 'pulling the plug" when you say you turn the radio off and back on?
Just like your computer, you must use the POWER button if the state is to be
saved.

Do you have anything plugged into the USB or RS-232 port that might be
causing a command to reset the menu entry?  Pull out the USB cable and/or
the RS-232 cable and try again.

73,
Don W3FPR

On 10/24/2016 9:24 AM, Jeff wrote:
> Good morning.  I am having a problem getting my K3S to save in the config
menu the setting for PTT-PTT. When I set it for RTS-DTR, hit menu it works
fine.  Then I turn the radio off and back on and the PTT-PTT setting is back
to OFF-OFF. What am I doing wrong? How do I get the Config menu to save the
PTT-PTT setting to RTS-DTR?
>
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Re: [Elecraft] (no subject)

[n9tf]

Could this be the reason. Does the K3S need to be switched off of safe mode for 
the PTT-PTT settings to not change? 
  


PTT/KEY USE WITH THE USB PORT IMPROVED: Some PC applications can control PTT 
and 

KEY at the K3S via the RTS/DTR signals of the USB port. However, use of these 
signals may also allow 

the PC’s USB port initialization to unexpectedly activate transmit at the K3S. 
This can happen if the 

computer is turned on after the K3S, or if the USB cable is not connected. 
There is now a "Safe" mode 

(the default) which disables PTT-KEY transmit until the K3S receives a command 
via USB, such as a 

read of the rig's VFO frequency. To turn on safe mode on/off, go into 
CONFIG:PTT-KEY and tap '1' to 

select "USB SAFE" or "UNSAFE". Exit the menu and turn the K3S off/on. 
Applications that use PTTKEY 

via USB but never send commands may require "UNSAFE" mode. In this case, 
unwanted 

transmit can be avoided by turning the PC on before the K3S. 
  
http://www.elecraft.com/manual/E740258E%20K3S%20Owner's%20man%20errata%20A1-2.pdf
 
  
Gene, N9TF 

- Original Message -

From: "Dimitry Borzenko" <4z...@bezeqint.net> 
To: "elecraft"  
Sent: Monday, October 24, 2016 10:28:25 AM 
Subject: Re: [Elecraft] (no subject) 

Hello. 
Have check now and find - PTT setting is not saved. 
I have set it to RTS-OFF, after turning off (by power button, not by power 
supply) and turning on again -  setting of PTT is  OFF-OFF. 
s/n of TRX is 10944 with firmware 5.50. 

Regards. 


-Original Message- 
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Don 
Wilhelm 
Sent: Monday, October 24, 2016 5:14 PM 
To: Jeff ; Elecraft@mailman.qth.net 
Subject: Re: [Elecraft] (no subject) 

Jeff, 

I have no idea what you are doing wrong, but here are a few thoughts: 
After making the menu change, are you exiting from the menu? Tap the MENU 
button. 
Are you 'pulling the plug" when you say you turn the radio off and back on? 
Just like your computer, you must use the POWER button if the state is to be 
saved. 

Do you have anything plugged into the USB or RS-232 port that might be 
causing a command to reset the menu entry?  Pull out the USB cable and/or 
the RS-232 cable and try again. 

73, 
Don W3FPR 

On 10/24/2016 9:24 AM, Jeff wrote: 
> Good morning.  I am having a problem getting my K3S to save in the config 
menu the setting for PTT-PTT. When I set it for RTS-DTR, hit menu it works 
fine.  Then I turn the radio off and back on and the PTT-PTT setting is back 
to OFF-OFF. What am I doing wrong? How do I get the Config menu to save the 
PTT-PTT setting to RTS-DTR? 
> 
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Re: [Elecraft] (no subject)

[Don Wilhelm]

Jeff,

I have no idea what you are doing wrong, but here are a few thoughts:
After making the menu change, are you exiting from the menu? Tap the 
MENU button.
Are you 'pulling the plug" when you say you turn the radio off and back 
on?  Just like your computer, you must use the POWER button if the state 
is to be saved.


Do you have anything plugged into the USB or RS-232 port that might be 
causing a command to reset the menu entry?  Pull out the USB cable 
and/or the RS-232 cable and try again.


73,
Don W3FPR

On 10/24/2016 9:24 AM, Jeff wrote:

Good morning.  I am having a problem getting my K3S to save in the config menu 
the setting for PTT-PTT. When I set it for RTS-DTR, hit menu it works fine.  
Then I turn the radio off and back on and the PTT-PTT setting is back to 
OFF-OFF. What am I doing wrong? How do I get the Config menu to save the 
PTT-PTT setting to RTS-DTR?


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[Elecraft] (no subject)

[Jeff]

Good morning.  I am having a problem getting my K3S to save in the config menu 
the setting for PTT-PTT. When I set it for RTS-DTR, hit menu it works fine.  
Then I turn the radio off and back on and the PTT-PTT setting is back to 
OFF-OFF. What am I doing wrong? How do I get the Config menu to save the 
PTT-PTT setting to RTS-DTR?  

Tnx Jeff W7JW  
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Re: [Elecraft] [K3] WTB:KAT500

[Petr, OK1RP/M0SIS]

Hello all,

thank you to all for hints and tips until now.
Unfortunately all sales were CONUS only. :(
Thank you for offers, if any...

best  73 - Petr, OK1RP






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