Re: [Elecraft] KXV3

[Paul GACEK via Elecraft]

Did the install also include going into the K3 config menu and setting this 
option as installed (nor)?

Paul


> On Jan 28, 2021, at 7:59 AM, NQ7R  wrote:
> 
>   I installed a used KXV3 but when I select RX ANT it says " no KXV3". 
> Is there a jumper or such that I missed in the installation?
> 
> Tom NQ7R
> 
> 
> 
> --
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[Elecraft] KXV3

[NQ7R]

  I installed a used KXV3 but when I select RX ANT it says " no KXV3". 
 Is there a jumper or such that I missed in the installation?

Tom NQ7R



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[Elecraft] KXV3 GAP1

[Juha - oh6os]

Hello,

I burned out GAP1 on KXV3 board, too much RF, hi.

What is this component? Overvoltage? Need to know to chage it. Tnx.

juha oh6os



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Re: [Elecraft] KXV3 question

[hawley, charles j jr]

The spacers are not mentioned as separate parts as far as I found. I don’t 
remember thinking about them even after building two kits. I believe they were 
fastened to and part of the board.

Chuck Jack 
KE9UW

Sent from my iPhone, cjack 

> On Dec 16, 2018, at 2:37 PM, Nr4c  wrote:
> 
> The Assembly manual should provide enough info to answe your questions. The 
> spacer should be referenced to the parts inventory in rear of manual and 
> available via phone call to Elecraft. Ask for Madelyn. 
> 
> Sent from my iPhone
> ...nr4c. bill
> 
> 
>> On Dec 16, 2018, at 9:35 AM, mike stokes  wrote:
>> 
>> I bought a used K3 and found that the lower right screw that holds the
>> KXV3t against the rear chassis had fallen out during shipping.  I took it
>> apart and found the lock washer and nut.  Figure 10 in the manual shows
>> that there should be a spacer attached to the KXV3.  The space is there on
>> the top left mounting hole, but not the lower right one.  There is no
>> evidence that it was ever one soldered to it. My concerns are
>> 
>> 1) Is the space still somewhere in side the radio causing very bad things
>> when I power it up.
>> 
>> 2) Without this spacer the KXV3 starts to flex if tightened to much an the
>> KXV3 may short against .the rear plate.  If not tightened enough it will
>> vibrate loose again.
>> 
>> Can anyone confirm that this spacer should have been on both mounting
>> wholes ?
>> 
>> Here is a link to pics of each mounting hole.
>> https://1drv.ms/u/s!ANLmO2vBrPixiTQ
>> 
>> 73
>> Mike Stokes
>> KK9V
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Re: [Elecraft] KXV3 question

[Nr4c]

The Assembly manual should provide enough info to answe your questions. The 
spacer should be referenced to the parts inventory in rear of manual and 
available via phone call to Elecraft. Ask for Madelyn. 

Sent from my iPhone
...nr4c. bill


> On Dec 16, 2018, at 9:35 AM, mike stokes  wrote:
> 
> I bought a used K3 and found that the lower right screw that holds the
> KXV3t against the rear chassis had fallen out during shipping.  I took it
> apart and found the lock washer and nut.  Figure 10 in the manual shows
> that there should be a spacer attached to the KXV3.  The space is there on
> the top left mounting hole, but not the lower right one.  There is no
> evidence that it was ever one soldered to it. My concerns are
> 
> 1) Is the space still somewhere in side the radio causing very bad things
> when I power it up.
> 
> 2) Without this spacer the KXV3 starts to flex if tightened to much an the
> KXV3 may short against .the rear plate.  If not tightened enough it will
> vibrate loose again.
> 
> Can anyone confirm that this spacer should have been on both mounting
> wholes ?
> 
> Here is a link to pics of each mounting hole.
> https://1drv.ms/u/s!ANLmO2vBrPixiTQ
> 
> 73
> Mike Stokes
> KK9V
> __
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Re: [Elecraft] KXV3 question

[Don Wilhelm]

Mike,

Turn the K3 upside down and shake it a side to side, then turn it left 
and do it again. turn it right and repeat to see if it will fall out.
Shaking it will not normally hurt anything - if anything shakes loose 
(other than the spacer)


If you can't find the spacer, you may be able to slide some split 
lockwashers between the board and the rear panel that fits over the 
board.  Removing the left side panel will make access easier.


73,
Don W3FPR

On 12/16/2018 9:35 AM, mike stokes wrote:

I bought a used K3 and found that the lower right screw that holds the
KXV3t against the rear chassis had fallen out during shipping.  I took it
apart and found the lock washer and nut.  Figure 10 in the manual shows
that there should be a spacer attached to the KXV3.  The space is there on
the top left mounting hole, but not the lower right one.  There is no
evidence that it was ever one soldered to it. My concerns are

1) Is the space still somewhere in side the radio causing very bad things
when I power it up.

2) Without this spacer the KXV3 starts to flex if tightened to much an the
KXV3 may short against .the rear plate.  If not tightened enough it will
vibrate loose again.

Can anyone confirm that this spacer should have been on both mounting
wholes ?

Here is a link to pics of each mounting hole.
https://1drv.ms/u/s!ANLmO2vBrPixiTQ

73
Mike Stokes
KK9V
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Re: [Elecraft] KXV3 question

[hawley, charles j jr]

There is clearly a spacer on each of the two screws. Figure 55 of the K3S 
manual shows the bottom screw and spacer on the KXV3B which is the same 
mechanically.


Chuck KE9UW
c-haw...@illinois.edu

Sent from my iPad

> On Dec 16, 2018, at 8:35 AM, mike stokes  wrote:
> 
> I bought a used K3 and found that the lower right screw that holds the
> KXV3t against the rear chassis had fallen out during shipping.  I took it
> apart and found the lock washer and nut.  Figure 10 in the manual shows
> that there should be a spacer attached to the KXV3.  The space is there on
> the top left mounting hole, but not the lower right one.  There is no
> evidence that it was ever one soldered to it. My concerns are
> 
> 1) Is the space still somewhere in side the radio causing very bad things
> when I power it up.
> 
> 2) Without this spacer the KXV3 starts to flex if tightened to much an the
> KXV3 may short against .the rear plate.  If not tightened enough it will
> vibrate loose again.
> 
> Can anyone confirm that this spacer should have been on both mounting
> wholes ?
> 
> Here is a link to pics of each mounting hole.
> https://1drv.ms/u/s!ANLmO2vBrPixiTQ
> 
> 73
> Mike Stokes
> KK9V
> __
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[Elecraft] KXV3 question

[mike stokes]

I bought a used K3 and found that the lower right screw that holds the
KXV3t against the rear chassis had fallen out during shipping.  I took it
apart and found the lock washer and nut.  Figure 10 in the manual shows
that there should be a spacer attached to the KXV3.  The space is there on
the top left mounting hole, but not the lower right one.  There is no
evidence that it was ever one soldered to it. My concerns are

1) Is the space still somewhere in side the radio causing very bad things
when I power it up.

2) Without this spacer the KXV3 starts to flex if tightened to much an the
KXV3 may short against .the rear plate.  If not tightened enough it will
vibrate loose again.

Can anyone confirm that this spacer should have been on both mounting
wholes ?

Here is a link to pics of each mounting hole.
https://1drv.ms/u/s!ANLmO2vBrPixiTQ

73
Mike Stokes
KK9V
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[Elecraft] KXV3 or KXV3A Boards

[Dennis]

Anyone have one of these they want to part with?
Please reply offline.

Dennis W1UE
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Re: [Elecraft] kxv3 output question

[Jim Rhodes]

Actually looking at a different brand of transferred for satellite and
terrestrial work both. The transferred list says 28-32 for the XV432 was
wondering if it would go any higher in freq.

Jim Rhodes

On Sep 11, 2017 2:20 PM, "Don Wilhelm"  wrote:

> Jim,
>
> The power level can be set up to 120mW.
> The frequency range is about 2MHz.  I recall that initially the internal 2
> meter transceiver design was to be for a 50MHz IF, but was later changed to
> a 28MHz IF which required switching between 2 crystals to cover the entire
> 2 meter band.
> That is a limitation imposed by the 10 meter bandpass filters.
>
> If that information is not correct, I am certain that someone at Elecraft
> will provide corrections.
>
> 73,
> Don W3FPR
>
> On 9/11/2017 2:36 PM, Jim Rhodes wrote:
>
>> Can someone tell me the output range of freq for 10 meter if and power
>> output level. Using the "a" version.
>>
>
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Re: [Elecraft] kxv3 output question

[Don Wilhelm]

Jim,

The power level can be set up to 120mW.
The frequency range is about 2MHz.  I recall that initially the internal 
2 meter transceiver design was to be for a 50MHz IF, but was later 
changed to a 28MHz IF which required switching between 2 crystals to 
cover the entire 2 meter band.

That is a limitation imposed by the 10 meter bandpass filters.

If that information is not correct, I am certain that someone at 
Elecraft will provide corrections.


73,
Don W3FPR

On 9/11/2017 2:36 PM, Jim Rhodes wrote:

Can someone tell me the output range of freq for 10 meter if and power
output level. Using the "a" version.

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[Elecraft] kxv3 output question

[Jim Rhodes]

Can someone tell me the output range of freq for 10 meter if and power
output level. Using the "a" version.

Jim Rhodes
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[Elecraft] KXV3 -- Xverter PWA

[Ken Roberson via Elecraft]

Thanks everyone , I now am now the proud owner of a KXV3A PWA.

73 Ken K5DNL/WG2XXM
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Re: [Elecraft] KXV3 Issues - endless frustration

[Oliver Dröse]

Hi Udo,

the mW calibration never worked on my K3 if using the K3 Utility. Don't 
ask me why! Was the case right from the beginning. But it works 
trouble-free when doing it the manual way from the radio front panel. 
Try that as an alternative!


It seems to me settling power in the calibration routing just takes 
longer than the Utility will wait while the front panel procedure does 
not have that limit as you're in control of it.


Concerning the other issue (gain difference) just a few ideas: checks 
internal preamp settings, check filter setting (do both RX have 
comparable filter gains set), a.s.o.


73  gl, Olli 'BQA

Contest, DX  radio projects: http://www.dh8bqa.de


Am 19.06.2015 um 22:50 schrieb Udo Langenohl - DK5YA:
Just got my KXV3-B as a replacement of the former KXV3-A. Installing 
complete after 1 hour. Removing the back panel makes things much 
easier btw. But there's an issue. The 1 mW calibration fails. Thats 
what the Elecraft Utility says:


Elecraft K3 Utility Revision 1.13.5.9
OS Version 6.1 Build 7601 Windows 7/Windows Server 2008 R2
K3 MCU revision 05.26. RS-232 speed 38400 bit/s.
Starting 1 milliwatt calibration
Calibrating at 1.900 MHz
Calibration power settled at  1.800.00;
Elapsed time: 5 seconds
Tx Gain calibration failed because transmit power did not reach the 
expected value

1 milliwatt calibration failed

Wait, there's more to come. I made a replacement because my guess was: 
KXV3-A has a damage.
I use my K3 mostly on VHF with transverters, especially on 144 MHz 
EME. I'm running a Xpol configuration with 4 antennas on 144 EME with 
two identical transverters, both in phase and locked by a common 
external LO with 10 MHz GPS control for Hpol and Vpol.
HPol RX is fed to the KXV3 XVTR In/Out while Vpol is fed to the AUX RF 
input. I can listen to both planes simultaneously using diversity 
receive.
But something very strange happens when I compare signals on both 
planes. I have a 144 MHz beacon nearby (just 25 miles away). That 
beacon is running 8 W on a Hpol antenna. On my Hpol (main RX via KXV3) 
input this beacon comes up to S9+35 dB while on Vpol (second RX via 
AUX) it's endstop (S9 +60dB). The beacon is in the line of sight, 
there's a lot of RF on my location from this beacon.
It's definetely not from the transverters or from mismatched antennas 
because when I change inputs and connect the Hpol transverter output 
to the AUX RF it's suddenly S9 +60 dB too. Both main and sub RX are 
exactly in the same configuration, filters, bandwidth, NB Off, etc..
I checked S/N on KXVR3-A (old board) and AUX few days ago with my 
HP8664A signal generator.

On 28.200 (TVTR IF) I measured:
Top values:
KXV3-A TVTR IN:   -10dBm = S9+25dB
AUX IN: -10dBm = S9+60dB (!)
KXV3-A TVTR IN:  +3dBm = S9+60dB
Huge difference of at least 13dBm
Low values:
KXV3-A TVTR IN:  -134dBm = signal detectable
KXV3-A TVTR IN: -140dBm = none
AUX IN:-140dBm = clear signal detectable
Again a difference of at least 6dB or even more.

Now, with the new KXV3-B it's even worse, at least 22 dB difference 
between the AUX IN and TVTR IN.


What the heck is going wrong here? MAIN RX dead?

73 Udo, DK5YA



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[Elecraft] KXV3 Issues - endless frustration

[Udo Langenohl - DK5YA]

Just got my KXV3-B as a replacement of the former KXV3-A. Installing 
complete after 1 hour. Removing the back panel makes things much easier 
btw. But there's an issue. The 1 mW calibration fails. Thats what the 
Elecraft Utility says:


Elecraft K3 Utility Revision 1.13.5.9
OS Version 6.1 Build 7601 Windows 7/Windows Server 2008 R2
K3 MCU revision 05.26. RS-232 speed 38400 bit/s.
Starting 1 milliwatt calibration
Calibrating at 1.900 MHz
Calibration power settled at  1.800.00;
Elapsed time: 5 seconds
Tx Gain calibration failed because transmit power did not reach the 
expected value

1 milliwatt calibration failed

Wait, there's more to come. I made a replacement because my guess was: 
KXV3-A has a damage.
I use my K3 mostly on VHF with transverters, especially on 144 MHz EME. 
I'm running a Xpol configuration with 4 antennas on 144 EME with two 
identical transverters, both in phase and locked by a common external LO 
with 10 MHz GPS control for Hpol and Vpol.
HPol RX is fed to the KXV3 XVTR In/Out while Vpol is fed to the AUX RF 
input. I can listen to both planes simultaneously using diversity receive.
But something very strange happens when I compare signals on both 
planes. I have a 144 MHz beacon nearby (just 25 miles away). That beacon 
is running 8 W on a Hpol antenna. On my Hpol (main RX via KXV3) input 
this beacon comes up to S9+35 dB while on Vpol (second RX via AUX) it's 
endstop (S9 +60dB). The beacon is in the line of sight, there's a lot of 
RF on my location from this beacon.
It's definetely not from the transverters or from mismatched antennas 
because when I change inputs and connect the Hpol transverter output to 
the AUX RF it's suddenly S9 +60 dB too. Both main and sub RX are exactly 
in the same configuration, filters, bandwidth, NB Off, etc..
I checked S/N on KXVR3-A (old board) and AUX few days ago with my 
HP8664A signal generator.

On 28.200 (TVTR IF) I measured:
Top values:
KXV3-A TVTR IN:   -10dBm = S9+25dB
AUX IN: -10dBm = S9+60dB (!)
KXV3-A TVTR IN:  +3dBm = S9+60dB
Huge difference of at least 13dBm
Low values:
KXV3-A TVTR IN:  -134dBm = signal detectable
KXV3-A TVTR IN: -140dBm = none
AUX IN:-140dBm = clear signal detectable
Again a difference of at least 6dB or even more.

Now, with the new KXV3-B it's even worse, at least 22 dB difference 
between the AUX IN and TVTR IN.


What the heck is going wrong here? MAIN RX dead?

73 Udo, DK5YA

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Re: [Elecraft] KXV3 Issues - endless frustration

[Wayne Burdick]

Udo,

I'm not sure how the 1-mW calibration could fail. But I'll keep trying to 
duplicate the problem on my K3 (no luck so far). The rest of the crew will be 
back Monday, and they may have other suggestions.

The KXV3B should have essentially the same path loss, but better port 
isolation, than the KXV3A. So your signal strength tests don't make sense, 
either.

Note that the KXV3B includes the second preamp, which has a lot more gain than 
the main preamp. Are you using preamp 2 on the IF band?

73,
Wayne
N6KR





On Jun 19, 2015, at 1:50 PM, Udo Langenohl - DK5YA dk...@dk5ya.de wrote:

 Just got my KXV3-B as a replacement of the former KXV3-A. Installing complete 
 after 1 hour. Removing the back panel makes things much easier btw. But 
 there's an issue. The 1 mW calibration fails. Thats what the Elecraft Utility 
 says:
 
 Elecraft K3 Utility Revision 1.13.5.9
 OS Version 6.1 Build 7601 Windows 7/Windows Server 2008 R2
 K3 MCU revision 05.26. RS-232 speed 38400 bit/s.
 Starting 1 milliwatt calibration
 Calibrating at 1.900 MHz
 Calibration power settled at  1.800.00;
 Elapsed time: 5 seconds
 Tx Gain calibration failed because transmit power did not reach the expected 
 value
 1 milliwatt calibration failed
 
 Wait, there's more to come. I made a replacement because my guess was: KXV3-A 
 has a damage.
 I use my K3 mostly on VHF with transverters, especially on 144 MHz EME. I'm 
 running a Xpol configuration with 4 antennas on 144 EME with two identical 
 transverters, both in phase and locked by a common external LO with 10 MHz 
 GPS control for Hpol and Vpol.
 HPol RX is fed to the KXV3 XVTR In/Out while Vpol is fed to the AUX RF input. 
 I can listen to both planes simultaneously using diversity receive.
 But something very strange happens when I compare signals on both planes. I 
 have a 144 MHz beacon nearby (just 25 miles away). That beacon is running 8 W 
 on a Hpol antenna. On my Hpol (main RX via KXV3) input this beacon comes up 
 to S9+35 dB while on Vpol (second RX via AUX) it's endstop (S9 +60dB). The 
 beacon is in the line of sight, there's a lot of RF on my location from this 
 beacon.
 It's definetely not from the transverters or from mismatched antennas because 
 when I change inputs and connect the Hpol transverter output to the AUX RF 
 it's suddenly S9 +60 dB too. Both main and sub RX are exactly in the same 
 configuration, filters, bandwidth, NB Off, etc..
 I checked S/N on KXVR3-A (old board) and AUX few days ago with my HP8664A 
 signal generator.
 On 28.200 (TVTR IF) I measured:
 Top values:
 KXV3-A TVTR IN:   -10dBm = S9+25dB
 AUX IN: -10dBm = S9+60dB (!)
 KXV3-A TVTR IN:  +3dBm = S9+60dB
 Huge difference of at least 13dBm
 Low values:
 KXV3-A TVTR IN:  -134dBm = signal detectable
 KXV3-A TVTR IN: -140dBm = none
 AUX IN:-140dBm = clear signal detectable
 Again a difference of at least 6dB or even more.
 
 Now, with the new KXV3-B it's even worse, at least 22 dB difference between 
 the AUX IN and TVTR IN.
 
 What the heck is going wrong here? MAIN RX dead?
 
 73 Udo, DK5YA
 
 -- 
 **
 Webs by DK5YA:   *
 http://www.mmmonvhf.de/  [editor]*
 http://www.vhfdx.de/ [owner] *
 http://www.palekastro.de/[owner] *
 http://www.solweb.de/[owner] *
 http://www.spessartwetter.de/[owner] *
 **
 
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Re: [Elecraft] KXV3 ant RX protection [K3]

[Don Wilhelm]

Luca,

That is not done internally in the K3.  If that is a problem for you 
(you do not have adequate isolation between your TX antenna and the 
beverage), you will have to add that protection externally. Switching 
the RX antenna input to a dummy load during transmit should do the job 
nicely.

73,
Don W3FPR

On 10/19/2012 4:41 PM, Luca NCJ wrote:
 Hi all,
 need to be cleared on one issue.

 Scenario:

 Ant 1 (or 2) connected to TX antenna
 KXV3 ant RX IN connected to an RX system (i.e. a beverage)

 is there any setting to avoid RF from TX antenna returning into the RX IN
 module while transmitting?
 For example a menu that allows to disconnect the RX antenna when the PTT is
 pressed for TX-ing?

 TNX in advance


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Re: [Elecraft] KXV3 Question

[Edward R. Cole]

John, N2HMM, did you set up the CONFIG settings for transverters:
XV1 = ON
XV1 RF = frequency band of the transverter (e.g. 144)
XV1 IF = IF frequency the K3 will operate (e.g. 28)
XV1 PWR = L 1.50  for 1.5mw max
XV1 ADR = trn x, where x = 1 thru 9

each transverter gets a different XVx setting (i.e XV1 for 144, XV2 
for 222, XV3 for 432 etc up to XV9

If these settings have not been done the KXV3 will not operate.


73, Ed - KL7UW, WD2XSH/45
==
BP40IQ   500 KHz - 10-GHz   www.kl7uw.com
EME: 50-1.1kw?, 144-1.4kw, 432-QRT, 1296-?, 3400-?
DUBUS Magazine USA Rep dubus...@gmail.com
Kits made by KL7UW http://www.kl7uw.com/kits.htm
==
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[Elecraft] KXV3 Question

[John Santillo]

 
Hello all,

For the KXV3 transverter ports to be operational, should the KXV command be
set to test instead of normal?  The BNC I/O ports don't seem to work
unless it's put into test mode.

Comments appreciated.


73,

John
N2HMM
 

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Re: [Elecraft] KXV3 Question

[Dave]

No you dont have to for normal transverter operation.

When I set the transverter power setting in the menu (config:XVn power) to
low power (=1.5mW) the xverter ports are automatically activated

Dave

ww2r

Date: Thu, 7 Jun 2012 11:50:18 -0400
From: John Santillo u1004...@warwick.net
Subject: [Elecraft] KXV3 Question
To: 'Elecraft Reflector' elecraft@mailman.qth.net
Message-ID: 20120607155020.5db5b8a...@mailman.qth.net
Content-Type: text/plain;   charset=us-ascii


Hello all,

For the KXV3 transverter ports to be operational, should the KXV command be
set to test instead of normal?  The BNC I/O ports don't seem to work
unless it's put into test mode.

Comments appreciated.


73,

John
N2HMM


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[Elecraft] KXV3

[Bob W7AVK]

Anyone have a KXV3 they would like to sell?  Don't need the A version.

Please reply off list.

Tks

73  Bob  W7AVK
k3/100 kit s/n 4356
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[Elecraft] KXV3 fails to switch on XV144

[DM4iM]

Elecrafters,
i need your help for this problem:

While our club's K3 switches on my external 2m-transverter,
my own K3 fails.

I checked for differences in config, found none.

XV1 ON
XV1 ADDR trn1
KXV3 nor
TX INH OFF


I suspect i killed something on the KRX3-module.

If i jumper XV144 for a non-Elecraft rig, i can work with the
transverter .

HW?


-- 

73,
Martin DM4iM
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[Elecraft] KXV3 versus KXV3A

[Paul Maruna]

To All,

I am confused -- the Elecraft order page does not show just the KXV3 any more - 
just the KXV3A and it says that that card is used for the K144XV.

Does the I the KXV3A still generate a wideband 8.215 MHz IF output suitable for 
the Panadapter ? 

Please advise.

Thank you,
Paul Maruna (73)
KD8HWP
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Re: [Elecraft] KXV3 versus KXV3A

[Dick Dievendorff]

The KXV3A has all the capability of the KXV3 plus an additional connector to
support the K144XV. The KXV3A replaces the KXV3.

Dick, K6KR


-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Paul Maruna
Sent: Wednesday, September 15, 2010 12:24 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] KXV3 versus KXV3A

To All,

I am confused -- the Elecraft order page does not show just the KXV3 any
more - just the KXV3A and it says that that card is used for the K144XV.

Does the I the KXV3A still generate a wideband 8.215 MHz IF output suitable
for the Panadapter ? 

Please advise.

Thank you,
Paul Maruna (73)
KD8HWP
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Re: [Elecraft] KXV3 versus KXV3A

[David Ferrington, M0XDF]

Yes - discontinued the KXV3 I believe. KXV3A does it all and supports the 
K144XV.
73 de M0XDF, K3 #174, P3 #108
-- 
If a man will begin with certainties, he shall end in doubts; but if he
will be content to begin with doubts, he shall end in certainties.
-Francis Bacon, essayist, philosopher, and statesman (1561-1626)

On 15 Sep 2010, at 20:23, Paul Maruna wrote:

 To All,
 
 I am confused -- the Elecraft order page does not show just the KXV3 any more 
 - just the KXV3A and it says that that card is used for the K144XV.
 
 Does the I the KXV3A still generate a wideband 8.215 MHz IF output suitable 
 for the Panadapter ? 

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[Elecraft] KXV3 RXA board vs KXV3A

[Jeff KB2M]

Maybe I'm not awake yet, but I'm trying to figure out what the differences
are between a KXV3A, and a KXV3 with the KXV3 RXA board. I'm getting close
to receiving a K144XV board (ordered at Dayton) and need to know if I need
the KXV3A_UPGR to work with it, or will the KXV3 with the KXV3 RXA board
work. Its been awhile since I ordered the K144XV (10 months ago) and I seem
to have lost track of the situation. Thanks in advance for any
information...

73 Jeff kb2m


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Re: [Elecraft] KXV3 RXA board vs KXV3A

[Don Wilhelm]

Jeff,

I am not certain what you are referring to as a KXV3 with the KXV3 RXA 
board.  If you are referring to the RX Antenna, I believe that always 
has been a part of the KXV3.  If there was a different KXV3 RXA version, 
would someone please inform me.
Yes, the KXV3A is required to install the K144XV - the A version has 
the switching for the K144XV, and the non-A version does not.  I would 
say you need to order the KXV3_UPGR so you can be prepared when your 
K144XV arrives.

73,
Don W3FPR

Jeff KB2M wrote:
 Maybe I'm not awake yet, but I'm trying to figure out what the differences
 are between a KXV3A, and a KXV3 with the KXV3 RXA board. I'm getting close
 to receiving a K144XV board (ordered at Dayton) and need to know if I need
 the KXV3A_UPGR to work with it, or will the KXV3 with the KXV3 RXA board
 work. Its been awhile since I ordered the K144XV (10 months ago) and I seem
 to have lost track of the situation. Thanks in advance for any
 information...

 73 Jeff kb2m
   

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Re: [Elecraft] KXV3 RXA board vs KXV3A

[Stan Rife]

The RXA mod had nothing to do with the transverters. It increased the isoation 
of the receive antenna on the KXV3 board.
 
Jeff, you need to get the KXV3A, and there is an upgrade purchase price that 
gives you a break and you have to send your old KXV3 back to Elecraft.
 
Stan Rife
W5EWA

--- On Tue, 2/9/10, Don Wilhelm w3...@embarqmail.com wrote:


From: Don Wilhelm w3...@embarqmail.com
Subject: Re: [Elecraft] KXV3 RXA board vs KXV3A
To: Jeff KB2M k...@comcast.net
Cc: elecraft@mailman.qth.net
Date: Tuesday, February 9, 2010, 6:49 AM


Jeff,

I am not certain what you are referring to as a KXV3 with the KXV3 RXA 
board.  If you are referring to the RX Antenna, I believe that always 
has been a part of the KXV3.  If there was a different KXV3 RXA version, 
would someone please inform me.
Yes, the KXV3A is required to install the K144XV - the A version has 
the switching for the K144XV, and the non-A version does not.  I would 
say you need to order the KXV3_UPGR so you can be prepared when your 
K144XV arrives.

73,
Don W3FPR

Jeff KB2M wrote:
 Maybe I'm not awake yet, but I'm trying to figure out what the differences
 are between a KXV3A, and a KXV3 with the KXV3 RXA board. I'm getting close
 to receiving a K144XV board (ordered at Dayton) and need to know if I need
 the KXV3A_UPGR to work with it, or will the KXV3 with the KXV3 RXA board
 work. Its been awhile since I ordered the K144XV (10 months ago) and I seem
 to have lost track of the situation. Thanks in advance for any
 information...

 73 Jeff kb2m
   

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Re: [Elecraft] KXV3 versus KXV3a

[Graham Kimbell (G3TCT)]

From: Mark Bayern plcm...@gmail.com

 70MHz? How much of the world has a 4 meter (metre?) allocation?

At the latest count some 19 DXCCs have access to 4m, with quite a few more
equipped for crossband, and pushing their administrations for an allocation.
See http://www.70mhz.org/bands.htm

And over here it's metre ;-)

Graham

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Re: [Elecraft] KXV3 versus KXV3a

[Julian, G4ILO]

David Ferrington, M0XDF wrote:
 
 Ah - ok, so we order, you send KXV3a and an envelope and we return  
 KXV3 - at your cost (which was the info I was looking for :-)
 Thank you, a considerate Elecraft, as always.
 73 de M0XDF, K3 #174
 
 
He didn't say they would pay for the postage, only the envelope. :)

Since nobody has asked, I guess I will have to. Would it be possible,
instead of returning the KXV3, to modify it to provide the IF access for the
internal transverter? I'm guessing that Elecraft will modify the ones it
receives back so they can be used again, instead of just throwing them away.

-
Julian, G4ILO. K2 #392  K3 #222.
http://www.g4ilo.com/ G4ILO's Shackhttp://www.g4ilo.com/kcomm.html KComm
for Elecraft K2 and K3   http://www.wota.org.uk/ Wainwrights On The Air 

-- 
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Re: [Elecraft] KXV3 versus KXV3a

[Lyle Johnson]

 ...Would it be possible,
 instead of returning the KXV3, to modify it to provide the IF access for the
 internal transverter?

It is impractical.  The KXV3 consists of two PCBs, and the main PCB has 
been altered to include a number of new parts to support the new 
features required for internal band expansion modules.

73,

Lyle KK7P

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Re: [Elecraft] KXV3 versus KXV3a

[Niel Skousen]

ModuleS ...  Sweet !

Ok- I'm in line for the K432XV too!
Wonder if 'somebody' is already looking at satellite operating  
features...

Then VLF, then 70Mhz ...
I wonder how many modules will fit?

(amazing what you can see in a single 's' )

Niel
WA7SSA

Sent from my iPhone

On May 21, 2009, at 6:04, Lyle Johnson k...@wavecable.com wrote:

 ...Would it be possible,
 instead of returning the KXV3, to modify it to provide the IF  
 access for the
 internal transverter?

 It is impractical.  The KXV3 consists of two PCBs, and the main PCB  
 has
 been altered to include a number of new parts to support the new
 features required for internal band expansion modules.

 73,

 Lyle KK7P

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Re: [Elecraft] KXV3 versus KXV3a

[Mark Bayern]

Then VLF, then 70Mhz ...

70MHz? How much of the world has a 4 meter (metre?) allocation?

 Wonder if 'somebody' is already looking at satellite operating
 features...

W2CVZ was asking about satellite ops when the K3 was first announced
and the answers ended up in the faqs. Looks like we're getting closer.

Mark  AD5SS
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Re: [Elecraft] KXV3 versus KXV3a

[Doug Faunt N6TQS +1-510-655-8604]

That`s the second hint Lyle has dropped.  I'm not going to hold my
breath, since I don't look good with a blue face, but

73, doug

   From: Niel Skousen nskou...@talisman-intl.com
   Date: Thu, 21 May 2009 07:12:46 -0700

   ModuleS ...  Sweet !

   Ok- I'm in line for the K432XV too!
   Wonder if 'somebody' is already looking at satellite operating  
   features...

   Then VLF, then 70Mhz ...
   I wonder how many modules will fit?

   (amazing what you can see in a single 's' )

   Niel
   WA7SSA

   Sent from my iPhone

   On May 21, 2009, at 6:04, Lyle Johnson k...@wavecable.com wrote:

...Would it be possible,
instead of returning the KXV3, to modify it to provide the IF  
access for the
internal transverter?
   
It is impractical.  The KXV3 consists of two PCBs, and the main PCB  
has
been altered to include a number of new parts to support the new
features required for internal band expansion modules.
   
73,
   
Lyle KK7P
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Re: [Elecraft] KXV3 versus KXV3a

[Julius Fazekas n2wn]

Thanks for all the replies and the price point for the new KXV3a.
73,
Julius


Julius Fazekas n2wn wrote:
 
 What is the difference between the current KXV3 and the new KXV3a?
 
 Thanks,
 Julius
 
 


-
Julius Fazekas
N2WN

Tennessee Contest Group
http://www.k4ro.net/tcg/index.html

Tennessee QSO Party
http://www.tnqp.org/

Elecraft K2/100 #4455
Elecraft K3/100 #366
Elecraft K3#1875
-- 
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Re: [Elecraft] KXV3 versus KXV3a

[Eric Swartz WA6HHQ - Elecraft]

Slowest and cheapest method possible. We'll probably supply a 
pre-addressed padded envelope for return.

73, Eric   WA6HHQ

_..._


David Ferrington, M0XDF wrote:
 How will that be achieved for those of us outside the US - what kind 
 of shipment?
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Re: [Elecraft] KXV3 versus KXV3a

[David Ferrington, M0XDF]

Ah - ok, so we order, you send KXV3a and an envelope and we return  
KXV3 - at your cost (which was the info I was looking for :-)
Thank you, a considerate Elecraft, as always.
73 de M0XDF, K3 #174
-- 
When one door closes another door opens; but we so often look so long  
and
so regretfully upon the closed door, that we do not see the ones which  
open
for us. -Alexander Graham Bell, inventor (1847-1922)

On 19 May 2009, at 15:11, Eric Swartz WA6HHQ - Elecraft wrote:

 Slowest and cheapest method possible. We'll probably supply a pre- 
 addressed padded envelope for return.

 73, Eric   WA6HHQ

 _..._


 David Ferrington, M0XDF wrote:
 How will that be achieved for those of us outside the US - what  
 kind of shipment?

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[Elecraft] KXV3 versus KXV3a

[Julius Fazekas n2wn]

What is the difference between the current KXV3 and the new KXV3a?

Thanks,
Julius


-
Julius Fazekas
N2WN

Tennessee Contest Group
http://www.k4ro.net/tcg/index.html

Tennessee QSO Party
http://www.tnqp.org/

Elecraft K2/100 #4455
Elecraft K3/100 #366
Elecraft K3#1875
-- 
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Re: [Elecraft] KXV3 versus KXV3a

[Lyle Johnson]

 What is the difference between the current KXV3 and the new KXV3a?

The A supports the just-announced K144XV 2 meter module.  No functions 
or features are lost with the A; it is a superset of the current module.

73,

Lyle KK7P

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Re: [Elecraft] KXV3 versus KXV3a

[Brett Howard]

So if we already bought the KXV3 and we want to add 2 meters we have to
buy it again?

On Mon, 2009-05-18 at 12:40 -0700, Lyle Johnson wrote:
  What is the difference between the current KXV3 and the new KXV3a?
 
 The A supports the just-announced K144XV 2 meter module.  No functions 
 or features are lost with the A; it is a superset of the current module.
 
 73,
 
 Lyle KK7P
 
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Re: [Elecraft] KXV3 versus KXV3a

[Julius Fazekas n2wn]

The reason I ask Lyle, is I just purchased a new KXV3, which I assume will
not be usable with the K144XV... I would have held off until the new board
came out, had I known.

Ahhh, timing is everything. Thanks for the reply!

Cheers,
Julius


Lyle Johnson wrote:
 
 What is the difference between the current KXV3 and the new KXV3a?
 
 The A supports the just-announced K144XV 2 meter module.  No functions 
 or features are lost with the A; it is a superset of the current module.
 
 73,
 
 Lyle KK7P
 
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-
Julius Fazekas
N2WN

Tennessee Contest Group
http://www.k4ro.net/tcg/index.html

Tennessee QSO Party
http://www.tnqp.org/

Elecraft K2/100 #4455
Elecraft K3/100 #366
Elecraft K3#1875
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Re: [Elecraft] KXV3 versus KXV3a

[Lyle Johnson]

Brett Howard wrote:
 So if we already bought the KXV3 and we want to add 2 meters we have to
 buy it again?

There is a very low replacement price for those who already have a KXV3. 
  It is $39.95 if my memory serves me correctly from what was posted 
in the booth at Dayton.

FWIW, I just bought a K3 so I wouldn't have to keep moving my 
development radio between the workbench (where it normally resides) and 
my operating position.  I knew the KXV3A was coming -- having 
participated heavily in its design -- but bought a KXV3 for it so I 
could have the RX ANT and IF OUT features available until the K144XV is 
available.

So, I get to pay the upgrade, too :-)

73,

Lyle KK7P

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Re: [Elecraft] KXV3 versus KXV3a

[Joe Planisky]

Does the $40 upgrade for people who already have the old KXV3  
require them to return the old KXV3, or will they be able to keep it  
for use in another K3, sell it, or whatever?

73
--
Joe KB8AP

On May 18, 2009, at 12:40 PM, Lyle Johnson wrote:

 What is the difference between the current KXV3 and the new KXV3a?

 The A supports the just-announced K144XV 2 meter module.  No  
 functions
 or features are lost with the A; it is a superset of the current  
 module.

 73,

 Lyle KK7P

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Re: [Elecraft] KXV3 versus KXV3a

[wayne burdick]

Your choice.

73,
Wayne
N6KR

On May 18, 2009, at 1:14 PM, Joe Planisky wrote:

 Does the $40 upgrade for people who already have the old KXV3
 require them to return the old KXV3, or will they be able to keep it
 for use in another K3, sell it, or whatever?

---

http://www.elecraft.com

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Re: [Elecraft] KXV3 versus KXV3a

[Lyle Johnson]

 Does the $40 upgrade for people who already have the old KXV3 require 
 them to return the old KXV3, or will they be able to keep it for use in 
 another K3, sell it, or whatever?

Too soon to tell...  I expect the upgrade will not include the hardware, 
cover plate, etc, just the two-board assembly.

Watch this space as we get closer to the August delivery!

73,

Lyle KK7P

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Re: [Elecraft] KXV3 versus KXV3a

[Eric Swartz - WA6HHQ, Elecraft]

Wayne is incorrect here - we will be requiring the return of the old 
KXV3 PC boards with the upgrade.

73, Eric  WA6HHQ



wayne burdick wrote:
 Your choice.

 73,
 Wayne
 N6KR

 On May 18, 2009, at 1:14 PM, Joe Planisky wrote:

   
 Does the $40 upgrade for people who already have the old KXV3
 require them to return the old KXV3, or will they be able to keep it
 for use in another K3, sell it, or whatever?
 
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Re: [Elecraft] KXV3 versus KXV3a

[David Ferrington, M0XDF]

How will that be achieved for those of us outside the US - what kind  
of shipment?
-- 
It is of interest to note that while some dolphins are reported to have
learned English -- up to fifty words used in correct context -- no human
being has been reported to have learned dolphinese.
-Carl Sagan, astronomer and writer (1934-1996)

On 18 May 2009, at 22:22, Eric Swartz - WA6HHQ, Elecraft wrote:

 Wayne is incorrect here - we will be requiring the return of the old
 KXV3 PC boards with the upgrade.

 73, Eric  WA6HHQ



 wayne burdick wrote:
 Your choice.

 73,
 Wayne
 N6KR

 On May 18, 2009, at 1:14 PM, Joe Planisky wrote:


 Does the $40 upgrade for people who already have the old KXV3
 require them to return the old KXV3, or will they be able to keep it
 for use in another K3, sell it, or whatever?

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Re: [Elecraft] KXV3 versus KXV3a

[Joe Planisky]

Heh. Smart.  OK, would it be safe to assume the price of the new KXV3A  
(without a trade-in) will be in the neighborhood of $139?

73
--
Joe KB8AP

On May 18, 2009, at 2:22 PM, Eric Swartz - WA6HHQ, Elecraft wrote:

 Wayne is incorrect here - we will be requiring the return of the old  
 KXV3 PC boards with the upgrade.

 73, Eric  WA6HHQ



 wayne burdick wrote:
 Your choice.

 73,
 Wayne
 N6KR

 On May 18, 2009, at 1:14 PM, Joe Planisky wrote:


 Does the $40 upgrade for people who already have the old KXV3
 require them to return the old KXV3, or will they be able to keep it
 for use in another K3, sell it, or whatever?


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Re: [Elecraft] KXV3 versus KXV3a

[wayne burdick]

$109.95.

Wayne
N6KR

On May 18, 2009, at 3:21 PM, Joe Planisky wrote:

 Heh. Smart.  OK, would it be safe to assume the price of the new KXV3A 
 (without a trade-in) will be in the neighborhood of $139?

-

www.elecraft.com

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[Elecraft] KXV3 vs KXV3A?

[Joe Planisky]

Hmmm.  I wonder if the new KXV3A will gain or lose any capabilities  
(besides compatibility with the new 2m module.)  And will it differ in  
price compared to the current KXV3?

I've been considering getting a KXV3, and I'm not especially  
interested in the new 2m module, so I'm trying to decide whether to  
jump now and get the old KXV3, or wait and get the new KXV3A.

73
--
Joe KB8AP


On May 15, 2009, at 3:22 PM, Ed, W9EJB wrote:


 It will require an upgrade (actually a trade out) of the KXV3 for
 another $40.  New versions, the KXV3A will only be available in the  
 future.

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Re: [Elecraft] KXV3 vs KXV3A?

[Doug Faunt N6TQS +1-510-655-8604]

If I were you, I'd wait.  You can almost certainly get a KXV3 for free
soon.
73, doug

   From: Joe Planisky jp...@jeffnet.org
   Date: Sat, 16 May 2009 14:28:14 -0700

   Hmmm.  I wonder if the new KXV3A will gain or lose any capabilities  
   (besides compatibility with the new 2m module.)  And will it differ in  
   price compared to the current KXV3?

   I've been considering getting a KXV3, and I'm not especially  
   interested in the new 2m module, so I'm trying to decide whether to  
   jump now and get the old KXV3, or wait and get the new KXV3A.

   73
   --
   Joe KB8AP


   On May 15, 2009, at 3:22 PM, Ed, W9EJB wrote:

   
It will require an upgrade (actually a trade out) of the KXV3 for
another $40.  New versions, the KXV3A will only be available in the  
future.

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Re: [Elecraft] KXV3 vs KXV3A?

[Ed, W9EJB]

Joe,

Sorry, but I have no insight into that question.  Eric did say that only the 
A will be available in the future.  I am not sure if there will be price 
increase for the new one or if the $40 is the price if bundled with the 2M 
option.  Guess we will find out early this coming week.

Ed, W9EJB



  - Original Message - 
  From: Joe Planisky (via Nabble) 
  To: Ed, W9EJB 
  Sent: Saturday, May 16, 2009 5:28 PM
  Subject: [Elecraft] KXV3 vs KXV3A?


  Hmmm.  I wonder if the new KXV3A will gain or lose any capabilities   
  (besides compatibility with the new 2m module.)  And will it differ in   
  price compared to the current KXV3? 

  I've been considering getting a KXV3, and I'm not especially   
  interested in the new 2m module, so I'm trying to decide whether to   
  jump now and get the old KXV3, or wait and get the new KXV3A. 

  73 
  -- 
  Joe KB8AP 


  On May 15, 2009, at 3:22 PM, Ed, W9EJB wrote: 

   
   It will require an upgrade (actually a trade out) of the KXV3 for 
   another $40.  New versions, the KXV3A will only be available in the   
   future. 

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--

  This email is a reply to your post @ 
http://n2.nabble.com/Dayton---Initial-Reconnaissance-tp2908071p2913936.html
  You can reply by email or by visting the link above.



-- 
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Re: [Elecraft] KXV3 vs KXV3A?

[lyle johnson]

 Hmmm.  I wonder if the new KXV3A will gain or lose any capabilities  
 (besides compatibility with the new 2m module.)

The KXV3A adds the capability to support internal band modeuls for the K3, 
such as the new 2 meter module introduced this week.

No capabilities of the KXV3 are lost.

73,

Lyle KK7P (in Dayton)
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[Elecraft] KXV3 preamp settings

[Gary Smith]

Is there any ready way to increase the preamp settings when the 
KXV3's RX antenna input is being used? 

I'm using a K9AY for 160M - 40M and have it patched into the remote 
ant in. It could stand a bit more pre than the ANT1 setting provides.

Thanks!

Gary
KA1J
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[Elecraft] KXV3 Available

[G4MKP]

You may recall me reporting a faulty KXV3 board. I manage to repair the
fault (D5 replaced) and so far as I can tell, the board is once again fully
operational - everything worked superbly in CQWW CW anyhow. In the meantime,
Elecraft kindly sent me a replacement board and I have informed them of the
situation. I can offer the repaired board to anyone that would like it.

 

If you would like the board please let me know. In the unlikely event of a
mass response, names go in the hat.

 

No cost within the UK. Outside of the UK, postage at cost.

 

Cheers,

 

Terry

G4MKP

 

 

 

 

 

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[Elecraft] KXV3 RX ANT IN/OUT Question

[Ken Widelitz]

Does the RX ANT IN default to connecting to the RX ANT OUT? If RX ANT is not
selected by the K3, does the RX ANT IN go directly to the K3's RX ANT OUT?

Ken Widelitz



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RE: [Elecraft] KXV3 RX ANT IN/OUT Question

[Greg]

No.  RX ANT must be selected.  I have a QS1R SDR connected between RX IN and
OUT for use as a panadapter and it only works if you turn on the RX ANT
switch.

73
Greg
AB7R


-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Ken Widelitz
Sent: Tuesday, November 25, 2008 7:40 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] KXV3 RX ANT IN/OUT Question


Does the RX ANT IN default to connecting to the RX ANT OUT? If RX ANT is not
selected by the K3, does the RX ANT IN go directly to the K3's RX ANT OUT?

Ken Widelitz



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[Elecraft] KXV3 board questions

[Jack Colson]

Just installed the KXV3 board this morning and have observed the 
following:

1) the RX ant works - what is the RX ant OUT for?

2) in the Config menu for the KXV3 get only these three options - nor, 
not installed and EESE.


3) in the config WMTR mode, will only go to HP and VFO A just varies a 
number from 0-100, no option for LP or MW


4) observed the transverter out and in with an oscilloscope and when in 
cw mode and key rig all I see is differentiated spikes.


I went through the transverter set up menu as well.  That seems to agree 
with the manual.


Any suggestions?

Thank you,

Jack, W3TMZ


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Re: [Elecraft] KXV3 board questions

[Brett Howard]

On Sat, 2008-07-26 at 11:01 -0400, Jack Colson wrote:
 Just installed the KXV3 board this morning and have observed the 
 following:
 1) the RX ant works - what is the RX ant OUT for?
 
I believe that you can use it for feeding your signals through a preamp.
I used it a while back for doing A/B comparisons of rigs.  I set the
other rig to 0Watts out then I connected the output of that rig to RX
out.  Then hooked the antenna up to RX ANT.  Then I could tune both rigs
to a signal and then quickly switch between the two and do comparisons.
The K3 compared favoribly to my TS450 but heck I knew the TS450 was a
noisy son of a gun once I got my K1!

 2) in the Config menu for the KXV3 get only these three options - nor, 
 not installed and EESE.
 

That actually says tESt

 3) in the config WMTR mode, will only go to HP and VFO A just varies a 
 number from 0-100, no option for LP or MW
 

If you simply turn your power below 12 watts you'll get WMTR LP.  Then
to get to the MW setting you need to put your KXV3 into tESt mode.
Check page 46 ofyour owners manual.

 4) observed the transverter out and in with an oscilloscope and when in 
 cw mode and key rig all I see is differentiated spikes.

Were you in a transverter band?
 
 I went through the transverter set up menu as well.  That seems to agree 
 with the manual.
 
 Any suggestions?
 
 Thank you,
 
 Jack, W3TMZ
 
 
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Re: [Elecraft] KXV3 clarification requested

[Chad WE9V]

  I just tried it out on my radio and thought that in split mode I could
  have a different antenna selected but on the same band.

  I couldn't with the firmware I am running now.

  So, the correct answer is at present that you have to hit the antenna
  switch to toggle.  Perhaps a future firmware release will let you set up
  the other antenna for Tx.

So, do I need to add a $100 KXV3 to my order just to get the RX ANT
feature, or will this functionality be added to the firmware?  That
is, when you only have a K3 and KAT3, have the ability to TX on one
antenna port, and automatically RX on the other antenna port?

Chad WE9V
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Re: [Elecraft] KXV3 clarification requested

[K3KO]

Alternative is to build yourself an external box which switches in the RX
antenna for RX and to the xmit antenna for xmit.  You can use key out' to
orchestrate this.  

Have had to do this with quite a few radios that did not have RX antenna
inputs.  Mine uses a large reed relay and thus rapidly performs this task.  

de K3KO

Robert Tellefsen wrote:
 
 I have my K3 on order with the KAT3 ATU.
 
 Do I  also have to order the KXV3 in order to have
 an aux receive input port ?
 
 The aux receive port came as part of the 160m option
 in my K2, but 160 is already included in the K3, so I
 need this clarification (and maybe a quick order update :-) )
 
 Thanks and 73
 Bob N6WG
 
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Re: [Elecraft] KXV3 clarification requested

[Chad WE9V]

On Fri, Mar 14, 2008 at 1:53 PM, Dave Hachadorian [EMAIL PROTECTED] wrote:
 Maybe I'm missing something here. What about the following
 from the K3 FAQ's:

 If the transverter option is not installed, can the K3 use
 ANT2 as a de facto RX ANT?

 Yes.  If the KXV3 is not installed, you can designate either
 antenna to either receiver.

 So, this will allow me to transmit on a main antenna, and
 receive on a beverage without a subreceiver or KXV3
 installed, right?

 Dave Hachadorian, K6LL

I posed the same question to a couple of current K3 owners and they
said NO.  You need the KXV3 installed to listen to another antenna.
One of them said that the isolation is very poor between ANT1 and
ANT2, therefore you need the KXV3.  It would be nice to have
Elecraft's clarification on this, because the FAQ seems pretty clear
and contrary to what other owners have said.

Chad WE9V
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Re: [Elecraft] KXV3 clarification requested

[Ken K3IU]

My understanding is that IF you have the sub-RX installed and have the 
KAT3 installed, you can connect one antenna to ANT1, another antenna to 
ANT2, and select which antenna serves the main RX and which one serves 
the sub-RX. Since there are no sub-RXs in the field, no one has been 
able to do this and any comment about how effective (or ineffective) it 
would be seems premature.


Pages 38, 39 and 40 of the Rev C Owners Manual makes it pretty clear... 
to me, anyway.


73,
Ken K3IU

Chad WE9V wrote:

On Fri, Mar 14, 2008 at 1:53 PM, Dave Hachadorian [EMAIL PROTECTED] wrote:
  

Maybe I'm missing something here. What about the following
from the K3 FAQ's:

If the transverter option is not installed, can the K3 use
ANT2 as a de facto RX ANT?

Yes.  If the KXV3 is not installed, you can designate either
antenna to either receiver.

So, this will allow me to transmit on a main antenna, and
receive on a beverage without a subreceiver or KXV3
installed, right?

Dave Hachadorian, K6LL



I posed the same question to a couple of current K3 owners and they
said NO.  You need the KXV3 installed to listen to another antenna.
One of them said that the isolation is very poor between ANT1 and
ANT2, therefore you need the KXV3.  It would be nice to have
Elecraft's clarification on this, because the FAQ seems pretty clear
and contrary to what other owners have said.

Chad WE9V
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Re: [Elecraft] KXV3 clarification requested

[Dave Hachadorian]

- Original Message - 
From: Chad WE9V [EMAIL PROTECTED]

To: Dave Hachadorian [EMAIL PROTECTED]
Cc: Elecraft Reflector elecraft@mailman.qth.net
Sent: Monday, March 17, 2008 7:00 PM
Subject: Re: [Elecraft] KXV3 clarification requested



On Fri, Mar 14, 2008 at 1:53 PM, Dave Hachadorian
[EMAIL PROTECTED] wrote:

Maybe I'm missing something here. What about the
following
from the K3 FAQ's:

If the transverter option is not installed, can the K3
use
ANT2 as a de facto RX ANT?

Yes.  If the KXV3 is not installed, you can designate
either
antenna to either receiver.

So, this will allow me to transmit on a main antenna, and
receive on a beverage without a subreceiver or KXV3
installed, right?

Dave Hachadorian, K6LL


I posed the same question to a couple of current K3 owners
and they
said NO.  You need the KXV3 installed to listen to another
antenna.
One of them said that the isolation is very poor between
ANT1 and
ANT2, therefore you need the KXV3.  It would be nice to
have
Elecraft's clarification on this, because the FAQ seems
pretty clear
and contrary to what other owners have said.

Chad WE9V


Hi Chad,

I thought this reply was an authoritative answer:
http://www.nabble.com/Re%3A-KXV3-clarification-requested-p16058211.html

I believe Lyle Johnson is an Elecraft employee.

Dave Hachadorian, K6LL
Yuma, AZ




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Re: [Elecraft] KXV3 clarification requested

[Lyle Johnson]

I thought this reply was an authoritative answer:
http://www.nabble.com/Re%3A-KXV3-clarification-requested-p16058211.html

I believe Lyle Johnson is an Elecraft employee.


Yes, but he is fallible.

I just tried it out on my radio and thought that in split mode I could 
have a different antenna selected but on the same band.


I couldn't with the firmware I am running now.

So, the correct answer is at present that you have to hit the antenna 
switch to toggle.  Perhaps a future firmware release will let you set up 
the other antenna for Tx.


Sorry, didn't mean to mislead.

73,

Lyle KK7P


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Re: [Elecraft] KXV3 clarification requested

[Lyle Johnson]

Just assembling my K3 and perhaps I missed an assembly step because, 
though I ordered the KXV3, KIO3 and KAT3, I hve no aux antenna port 
below the two antenna connectors...what did I miss?


Not a thing.  It is called RX ANT IN on the KXV3. The port you are 
referring to is near the SO-239s and is intended for the KRX3 (which is 
not to imply it comes with the KRX3, or that it does not, and I don't 
know the answer).


73,

Lyle KK7P

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[Elecraft] KXV3 clarification requested

[Bill Tippett]

N6AX:
 Just assembling my K3 and perhaps I missed an assembly step because,
 though I ordered the KXV3, KIO3 and KAT3, I hve no aux antenna port
 below the two antenna connectors...what did I miss?

KK7P:
Not a thing.  It is called RX ANT IN on the KXV3. The port you are
referring to is near the SO-239s and is intended for the KRX3 (which is
not to imply it comes with the KRX3, or that it does not, and I don't
know the answer).

There is nothing missing in your assembly.  I
believe AUX RF (below ANT1 and ANT2) is reserved for a
future RX ANT input for the Sub RX only (i.e. similar in
function to the present RX ANT on the KXV3).  Elecraft's
drawing of the rear panel shows this port being a BNC
connector just like the KXV3's BNC for RX ANT.

Why all this complexity?  When using the Sub RX
for diversity receive, one might want to do the following:

1.  Transmit on ANT1, assign Main RX to your transmit
antenna and assign Sub RX to a receive only antenna
on AUX RF (i.e. you're using your transmit antenna and
a separate receive antenna for diversity receive).

2.  Transmit on ANT1, assign Main RX to a receive antenna
on RX ANT and assign Sub RX to another receive antenna
on AUX RF (i.e. you're using two separate receive antennas
for diversity receive).

The way I understand it (which could be wrong!) is that
AUX RF can only be used for the Sub RX, not the Main RX.
I suspect this will become more clear after the KRX3 is
introduced.  There may be a little kit to add the BNC
connector for AUX RF and appropriate wiring connecting
it to the KRX3.  In the meantime, there is absolutely
nothing wrong with your present assembly!

73,  Bill  W4ZV


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Re: [Elecraft] KXV3 clarification requested

[Dave Hachadorian]

- Original Message - 
From: Lyle Johnson [EMAIL PROTECTED]

To: elecraft@mailman.qth.net
Sent: Friday, March 14, 2008 5:12 PM
Subject: Re: [Elecraft] KXV3 clarification requested



Do I  also have to order the KXV3 in order to have
an aux receive input port ?


Yes

73,

Lyle KK7P


Maybe I'm missing something here. What about the following
from the K3 FAQ's:

If the transverter option is not installed, can the K3 use
ANT2 as a de facto RX ANT?

Yes.  If the KXV3 is not installed, you can designate either
antenna to either receiver.

So, this will allow me to transmit on a main antenna, and 
receive on a beverage without a subreceiver or KXV3 
installed, right?


Dave Hachadorian, K6LL
Yuma, AZ





















. 


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Re: [Elecraft] KXV3 clarification requested

[Lyle Johnson]

So, this will allow me to transmit on a main antenna, and receive on a 
beverage without a subreceiver or KXV3 installed, right?



Yes.

Lyle

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Re: [Elecraft] KXV3 clarification requested

[John Klewer]

Thanks to all for the good info.

John, N6AX
K3 #567

Bill Tippett wrote:

N6AX:
 Just assembling my K3 and perhaps I missed an assembly step because,
 though I ordered the KXV3, KIO3 and KAT3, I hve no aux antenna port
 below the two antenna connectors...what did I miss?

KK7P:
Not a thing.  It is called RX ANT IN on the KXV3. The port you are
referring to is near the SO-239s and is intended for the KRX3 (which is
not to imply it comes with the KRX3, or that it does not, and I don't
know the answer).

There is nothing missing in your assembly.  I
believe AUX RF (below ANT1 and ANT2) is reserved for a
future RX ANT input for the Sub RX only (i.e. similar in
function to the present RX ANT on the KXV3).  Elecraft's
drawing of the rear panel shows this port being a BNC
connector just like the KXV3's BNC for RX ANT.

Why all this complexity?  When using the Sub RX
for diversity receive, one might want to do the following:

1.  Transmit on ANT1, assign Main RX to your transmit
antenna and assign Sub RX to a receive only antenna
on AUX RF (i.e. you're using your transmit antenna and
a separate receive antenna for diversity receive).

2.  Transmit on ANT1, assign Main RX to a receive antenna
on RX ANT and assign Sub RX to another receive antenna
on AUX RF (i.e. you're using two separate receive antennas
for diversity receive).

The way I understand it (which could be wrong!) is that
AUX RF can only be used for the Sub RX, not the Main RX.
I suspect this will become more clear after the KRX3 is
introduced.  There may be a little kit to add the BNC
connector for AUX RF and appropriate wiring connecting
it to the KRX3.  In the meantime, there is absolutely
nothing wrong with your present assembly!

73,  Bill  W4ZV


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[Elecraft] KXV3 clarification requested

[Robert Tellefsen]

I have my K3 on order with the KAT3 ATU.

Do I  also have to order the KXV3 in order to have
an aux receive input port ?

The aux receive port came as part of the 160m option
in my K2, but 160 is already included in the K3, so I
need this clarification (and maybe a quick order update :-) )

Thanks and 73
Bob N6WG

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Re: [Elecraft] KXV3 clarification requested

[Stewart Baker]

Yes, but clarify that it has the RX antenna isolation improvement
fitted.

73
Stewart G3RXQ
On Fri, 14 Mar 2008 10:00:58 -0800, Robert Tellefsen wrote:
 I have my K3 on order with the KAT3 ATU.

 Do I  also have to order the KXV3 in order to have
 an aux receive input port ?

 The aux receive port came as part of the 160m option
 in my K2, but 160 is already included in the K3, so I
 need this clarification (and maybe a quick order update :-) )

 Thanks and 73
 Bob N6WG

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Re: [Elecraft] KXV3 clarification requested

[Lyle Johnson]

Do I  also have to order the KXV3 in order to have
an aux receive input port ?


Yes

73,

Lyle KK7P

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Re: [Elecraft] KXV3 clarification requested

[Robert Tellefsen]

Thanks Stewart.
I'll do that.
73, Bob N6WG

- Original Message - 
From: Stewart Baker [EMAIL PROTECTED]
To: Robert Tellefsen [EMAIL PROTECTED]; elecraft@mailman.qth.net
Sent: Friday, March 14, 2008 9:09 AM
Subject: Re: [Elecraft] KXV3 clarification requested


Yes, but clarify that it has the RX antenna isolation improvement 
fitted.

73
Stewart G3RXQ
On Fri, 14 Mar 2008 10:00:58 -0800, Robert Tellefsen wrote:
 I have my K3 on order with the KAT3 ATU.

 Do I  also have to order the KXV3 in order to have
 an aux receive input port ?

 The aux receive port came as part of the 160m option
 in my K2, but 160 is already included in the K3, so I
 need this clarification (and maybe a quick order update :-) )

 Thanks and 73
 Bob N6WG

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Re: [Elecraft] KXV3 clarification requested

[John Klewer]

Just assembling my K3 and perhaps I missed an assembly step because, 
though I ordered the KXV3, KIO3 and KAT3, I hve no aux antenna port 
below the two antenna connectors...what did I miss?


John, N6AX



Lyle Johnson wrote:

Do I  also have to order the KXV3 in order to have
an aux receive input port ?


Yes

73,

Lyle KK7P

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Re: [Elecraft] KXV3 question

[David Ferrington, M0XDF]

No, I think you'll find the socket has a blanking plug there


On 8/2/08 00:30, John Glascock [EMAIL PROTECTED] sent:

 
 I am currently installing the KXV3 in my K3 (#364).  During the installation
 I noticed the part in the picture on page 11 of the installation guide has
 all the pins.  Mine is missing the 3 pin from the right as you look at the
 picture.  
 
 Is this a problem?
 
 John Glascock, N0IB

-- 
Everything secret degenerates, even the administration of justice; nothing
is safe that does not show how it can bear discussion and publicity.
-Lord Acton, historian (1834-1902)


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[Elecraft] KXV3 question

[John Glascock]

I am currently installing the KXV3 in my K3 (#364).  During the installation
I noticed the part in the picture on page 11 of the installation guide has
all the pins.  Mine is missing the 3 pin from the right as you look at the
picture.  

Is this a problem?

John Glascock, N0IB
-- 
View this message in context: 
http://www.nabble.com/KXV3-question-tp15347005p15347005.html
Sent from the Elecraft mailing list archive at Nabble.com.

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Re: [Elecraft] KXV3: (1) RX ANT signal level during TX; (2) spectra at buffered IF output

[Stewart Baker]

Wayne,
Thank you for your very comprehensive mail, it certainly has put
my mind at rest re potential issues involving separate receive
antennas into the K3.

73
Stewart G3RXQ
On Sun, 3 Feb 2008 14:42:19 -0800, wayne burdick wrote:
 Hi all,

 I'll address both of these issues.

 1. RX ANT input signal handling during TX

 The KXV3's ANT IN jack includes a carrier-operated relay circuit
(COR).
 If the COR kicks in too soon, they relay will switch off/on
during
 keying. So its threshold is set high. It will still serve its
primary
 function, which is to protect the transceiver when unsafe signal
levels
 are present, such as when the RX antenna is in the near field of
a KW
 transmit signal, or when a transmitter is accidentally connected
to
 this port.

 This leaves a gray zone where the COR doesn't kick in, but the
transmit
 signal may still be very high. High-power contest stations
sometimes
 use additional external T/R switching if they can't avoid the
use of
 closely-coupled receive and transmit antennas.

 We recently to a close look at this gray zone, and found that we
could
 make an RX ANT jack on steroids by adding two more diode
isolation
 sections. The resulting parts count is considerably higher, but
we feel
 that the added protection during transmit would be worthwhile.
So this
 change will be included in production units (once we use up our
present
 supply of assembled KXV3 modules).

 Meanwhile, if your antenna configuration and power level warrant
this
 higher degree of isolation, and you already have a KXV3, you can
modify
 it. We're designing a small add-on board to make this easier. It
will
 be supplied free of charge, on request.

 This unit has not yet been assigned an Elecraft part number, and
isn't
 available yet, so PLEASE don't request it until we announce the
 details.

 2. Buffered I.F. output spectra

 The pick-off point for the K3's buffered I.F. output -- right at
the
 output of the 1st mixer's post-amp stage -- was selected to give
the
 widest possible bandwidth. Thus there is no filtering of any
kind from
 here to the BNC jack on the KXV3. This creates the opportunity
to do
 *very* wide spectral sweeps, if required -- limited only by the
 bandwidth of the K3's band-pass filters.

 As some (armed with spectrum analyzers) have noted, this output
signal
 includes the usual spectra one would expect from a high-level
mixer.
 (And it *is* a very high-level mixer.)

 A mixer's output includes a broad range of products relating to
the sum
 and difference of its inputs (RF and LO). It also includes
products
 derived from harmonics of the sum and difference, etc.
Collectively,
 these will appear as a comb pattern on an analyzer. This is
why the
 mixer must be followed by band-pass filtering. (In transmit mode
this
 function is performed by the K3's narrow ham-band band-pass
filters; in
 receive mode, by the I.F. crystal filter and DSP filtering.)

 But the buffered I.F. output is at a different point in the
signal
 chain. So any filtering needed for a panadapter must be included
either
 in the panadapter itself, or in series with it. Some panadapters
will
 require no filtering at all, while some will need various
degress of
 L-C filtering (the L-C filter used on our I.F. noise blanker is
a good
 starting point).

 If you were only interested in a narrow band sweep, you could
use a
 ceramic or crystal filter. Our FM crystal filter, at about 13
kHz wide,
 would be a good choice here.

 Excellent shielding should be used, and possibly additional
buffering,
 to prevent re-radiation of 8.215 MHz back into the K3.

 A related topic is the exact frequency of the buffered I.F.
output. It
 is nominally 8.215 MHz with our 8-pole filters, and typically
0.8 to
 0.9 kHz lower with our 5-pole filters. In addition, the portion
of this
 passband actually present at the audio output is determined by
the DSP
 controls (SHIFT, WIDTH, etc.). We can work with panadapter
suppliers to
 provide this data via the RS232 port, and of course any future
Elecraft
 panadapter would also have this information available.

 I'll be adding this subject to the Owner's Manual. If you're
 interfacing a panadapter to the K3 and have any further
questions, feel
 free to e-mail me directly.

 73,
 Wayne
 N6KR


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[Elecraft] KXV3: (1) RX ANT signal level during TX

[VE7AJJ]

Date: Mon, 4 Feb 2008 08:31:09 GMT
From: Stewart Baker [EMAIL PROTECTED]
Subject: Re: [Elecraft] KXV3: (1) RX ANT signal level during TX;(2)
   spectra at buffered IF output
To: wayne burdick [EMAIL PROTECTED],  Elecraft Reflector
   elecraft@mailman.qth.net
Message-ID: [EMAIL PROTECTED]
Content-Type: text/plain; charset=US-ASCII

Wayne,
Thank you for your very comprehensive mail, it certainly has put
my mind at rest re potential issues involving separate receive
antennas into the K3.


Ditto to that comment.   I was seriously thinking of canceling the
KXV3 from my order but all appears well..

Garry/Ve7ajj
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[Elecraft] KXV3: (1) RX ANT signal level during TX; (2) spectra at buffered IF output

[wayne burdick]

Hi all,

I'll address both of these issues.

1. RX ANT input signal handling during TX

The KXV3's ANT IN jack includes a carrier-operated relay circuit (COR). 
If the COR kicks in too soon, they relay will switch off/on during 
keying. So its threshold is set high. It will still serve its primary 
function, which is to protect the transceiver when unsafe signal levels 
are present, such as when the RX antenna is in the near field of a KW 
transmit signal, or when a transmitter is accidentally connected to 
this port.


This leaves a gray zone where the COR doesn't kick in, but the transmit 
signal may still be very high. High-power contest stations sometimes 
use additional external T/R switching if they can't avoid the use of 
closely-coupled receive and transmit antennas.


We recently to a close look at this gray zone, and found that we could 
make an RX ANT jack on steroids by adding two more diode isolation 
sections. The resulting parts count is considerably higher, but we feel 
that the added protection during transmit would be worthwhile. So this 
change will be included in production units (once we use up our present 
supply of assembled KXV3 modules).


Meanwhile, if your antenna configuration and power level warrant this 
higher degree of isolation, and you already have a KXV3, you can modify 
it. We're designing a small add-on board to make this easier. It will 
be supplied free of charge, on request.


This unit has not yet been assigned an Elecraft part number, and isn't 
available yet, so PLEASE don't request it until we announce the 
details.


2. Buffered I.F. output spectra

The pick-off point for the K3's buffered I.F. output -- right at the 
output of the 1st mixer's post-amp stage -- was selected to give the 
widest possible bandwidth. Thus there is no filtering of any kind from 
here to the BNC jack on the KXV3. This creates the opportunity to do 
*very* wide spectral sweeps, if required -- limited only by the 
bandwidth of the K3's band-pass filters.


As some (armed with spectrum analyzers) have noted, this output signal 
includes the usual spectra one would expect from a high-level mixer. 
(And it *is* a very high-level mixer.)


A mixer's output includes a broad range of products relating to the sum 
and difference of its inputs (RF and LO). It also includes products 
derived from harmonics of the sum and difference, etc. Collectively, 
these will appear as a comb pattern on an analyzer. This is why the 
mixer must be followed by band-pass filtering. (In transmit mode this 
function is performed by the K3's narrow ham-band band-pass filters; in 
receive mode, by the I.F. crystal filter and DSP filtering.)


But the buffered I.F. output is at a different point in the signal 
chain. So any filtering needed for a panadapter must be included either 
in the panadapter itself, or in series with it. Some panadapters will 
require no filtering at all, while some will need various degress of 
L-C filtering (the L-C filter used on our I.F. noise blanker is a good 
starting point).


If you were only interested in a narrow band sweep, you could use a 
ceramic or crystal filter. Our FM crystal filter, at about 13 kHz wide, 
would be a good choice here.


Excellent shielding should be used, and possibly additional buffering, 
to prevent re-radiation of 8.215 MHz back into the K3.


A related topic is the exact frequency of the buffered I.F. output. It 
is nominally 8.215 MHz with our 8-pole filters, and typically 0.8 to 
0.9 kHz lower with our 5-pole filters. In addition, the portion of this 
passband actually present at the audio output is determined by the DSP 
controls (SHIFT, WIDTH, etc.). We can work with panadapter suppliers to 
provide this data via the RS232 port, and of course any future Elecraft 
panadapter would also have this information available.


I'll be adding this subject to the Owner's Manual. If you're 
interfacing a panadapter to the K3 and have any further questions, feel 
free to e-mail me directly.


73,
Wayne
N6KR


---

http://www.elecraft.com

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