Re: [Elecraft] K3 power supply recommendations

[Fred Townsend]

Gary, you may be trying to chop the cabbage a bit finer than necessary. If
you take a close look at the input power circuit for the K3 you will see the
power pole voltage is the voltage seen by the circuit breaker and the 100W
amp. The voltage measured by the K3 is after the polyfuse (12A) which feeds
the receiver, fan, and P3 (via the power socket). The fuse drops a little
voltage which is why there is a slight difference in readings. The higher
voltage does not affect the receiver because there are several series
regulators (9V & 5V) that derive their supply from 12A  (post fuse 12V). In
the end it is not that critical except the 100W amp will run cleaner and
cooler as the voltage goes up. Also your external power supply, if linear,
will also run slightly cooler as the output voltage is adjusted upwards.
There will be negligible temperature drop on switching supplies. Of course
there are limits as to how high you can raise the input voltage. Read your
K3 input power specification for this value.

73
Fred, AE6QL
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Gary K9GS
Sent: Tuesday, April 16, 2013 8:56 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 power supply recommendations

I have a question on adjusting the voltage a bit higher for use with the K3.
I was thinking of 14.5 V, as others have mentioned, and adjusting voltage on
receive.

I have an accurate voltmeter.

Should I set the voltage with the voltmeter measuring at the DC input to the
K3 (at the power pole into the radio) or should I use the internal voltmeter
in the K3?





On 4/16/2013 9:05 AM, Mike Reublin wrote:
> I've used an Astron RS-35M very happily for years. Had to turn it up a tad
for the K3.
>
> Tip: The voltage adjustment is on the under side of the board..
>
> 73, Mike NF4L
>
> On Apr 16, 2013, at 8:03 AM, Tom Branton 
wrote:
>
>> The K3 in question is a K3/100.  Thanks,
>>
>> Tom
>>
>>
>>
>> On Apr 16, 2013, at 6:26 AM, "Tom Branton" 
wrote:
>>
>>> Good morning everyone ,
>>>
>>> I think I have found a very nicely maintained and equipped K3 to
purchase. Any purchase recommendations as to a well constructed and trouble
free power supply?
>>>
>>> Thanks
>>>
>>> Tom
>>> WD5DFE
>>>
>>>
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-- 


73,

Gary K9GS

Greater Milwaukee DX Association: http://www.gmdxa.org Society of Midwest
Contesters: http://www.w9smc.com
CW Ops #1032   http://www.cwops.org



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Re: [Elecraft] K3 recomended setup

[Tom H Childers]

Gus,

I think your list is a very good start.  It's the way started with my
first K3.  After time I added more options when I could afford them.

73,
Tom
Amateur Radio Operator N5GE
ARRL Lifetime Member
QCWA Lifetime Member 

On Tue, 16 Apr 2013 22:42:02 -0300, Gustavo Villada
 wrote:

>Hi guys,
>
>
>I'm (old) new in ham world, I'm returning after 15 years offline...
>now I have free time, and I'm reintroducing me to ham world again :)
>
>right now I'm using local club gear, and I'm interested reenter into
>hf with ssb, cw and data modes...
>
>
>I has been read for several weeks about current technology and even
>when I was locking into Big3, I got real good words about Elecraft.
>
>
>now my problem is that I don't know exactly if I have choose a good
>setup or I over/under select something...
>
>
>I've already selected the next setup, I wish put all option, but I
>haven't the budged ;)
>
>K3/100 K3 100W Xcvr. (Modular Kit)
>K3SSKT K3 Stainless H/W Kit
>KAT3 K3 ATU (Modular Kit)
>KFL3A-500 K3 500 Hz, 5 pole filter
>KUSB Univ. Ser Bus Adapt.
>KXV3A K3 RX Ant, IF Out & Xvrtr Intf.
>MH2 Hand Mic. for K2/K3.
>
>
>any suggestion, ear pull, or whatever is welcome
>
>Gus
>LU6HXV
>__
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Re: [Elecraft] KX3 remote transmitting

[Lynn W. Taylor, WB6UUT]

My other thought would be to put an actual "shack" on top of the knoll.

We're talking about a KX3, and maybe an antenna rotor and some lighting.

A couple of solar panels, a good deep-cycle 12v battery, 12v LED 
lighting, and a small inverter for AC-only loads would knock that out, 
probably for less than the cost of Heliax.


-- Lynn

On 4/16/2013 8:35 PM, Mike WA8BXN wrote:

I too live in a river valley. While working DX has not been a priority to me
I have wondered what the effect of being in a valley may be. I do like Lynn
s response to what to do. Beyond that I would look into remote operation of
a rig on the knoll if its easy to get power there and its a secure location.


73 - Mike WA8BXN



---Original Message---

From: Lynn W. Taylor, WB6UUT
Date: 4/16/2013 11:21:29 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KX3 remote transmitting

Maybe it's just me, but

I think before I put a whole lot of time, money and effort into getting
an antenna on the knoll, I'd do some experimentation down in the valley.

Maybe buy a really great antenna, and if it doesn't work, re-use it on
top of the knoll.

73 -- Lynn

On 4/16/2013 3:58 PM, James Denning wrote:

I am moving and am going to be in a challenging location. I am currently
1000ft above sea level and 600ft above a valley in Oregon. I am spoiled as



currently I can make SSB contacts in Brazil using my KX3 at 10 watts and a



Hexbeam antenna. I will be moving into a valley surrounded by nearby
hills/mountains at least several hundred feet higher than my new QTH.

There

is a high knoll nearby I could put an antenna on that would require about
1100ft of cable. Is it a dumb idea to instead put a KXPA100 or maybe a
KPA500 at the end of the run at the antenna base and make the long cable

run

between the KX3 and the amplifier rather than a straight run from my

shack?

Are there other better/cheaper solutions?




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Re: [Elecraft] K3 power supply recommendations

[Wes Stewart]

Use your meter.  BTW, I second, third, fourth... the recommendation of the 
RM-35.  Mine has been converted to a "smart charger" that keeps a 95AH AGM 
battery charged, but before that was used normally without incident.

--- On Tue, 4/16/13, Gary K9GS  wrote:

From: Gary K9GS 
Subject: Re: [Elecraft] K3 power supply recommendations
To: elecraft@mailman.qth.net
Date: Tuesday, April 16, 2013, 9:56 PM

I have a question on adjusting the voltage a bit higher for use with the 
K3. I was thinking of 14.5 V, as others have mentioned, and adjusting 
voltage on receive.

I have an accurate voltmeter.

Should I set the voltage with the voltmeter measuring at the DC input to 
the K3 (at the power pole into the radio) or should I use the internal 
voltmeter in the K3?



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Re: [Elecraft] KX3 remote transmitting

[Wes Stewart]

My previous message on this topic was composed while I was in a doctor's office 
waiting on my fiancee.  To gather some data on coax, I did some Google 
searching and found several "calculators" (that all seem to copy each other).  
Another thing they have in common is that they all use the data I derived for 
"window line" which was published in an ARRL Antenna Compendium article I 
wrote.  All without attribution, of course :-).

--- On Tue, 4/16/13, Ron D'Eau Claire  wrote:

From: Ron D'Eau Claire 
Subject: Re: [Elecraft] KX3 remote transmitting
To: elecraft@mailman.qth.net
Date: Tuesday, April 16, 2013, 9:11 PM

That's how the commercial HF stations did it. Keep in mind they used real
ladder line and NOT "window line" that is frequently mislabeled "ladder
line". 

True ladder line has large diameter conductors (usually No. 12 or larger
wires) and only enough insulator bars separating them to keep the wires
stable. That's compared to the window line that has a brown (polyethylene I
believe) web between two much smaller wires with openings (windows) cut into
the webbing. 

Window line works reasonably well, but does not have the stability and low
losses of true ladder line, especially for long runs. One of its biggest
drawbacks is that moisture, ice, snow, etc., can change its characteristics
appreciably in spite of the windows. Ladder line does not suffer such
changes unless it's buried in snow or iced over. 

73 Ron AC7AC

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Re: [Elecraft] K3 power supply recommendations

[Gary K9GS]

I have a question on adjusting the voltage a bit higher for use with the 
K3. I was thinking of 14.5 V, as others have mentioned, and adjusting 
voltage on receive.


I have an accurate voltmeter.

Should I set the voltage with the voltmeter measuring at the DC input to 
the K3 (at the power pole into the radio) or should I use the internal 
voltmeter in the K3?






On 4/16/2013 9:05 AM, Mike Reublin wrote:

I've used an Astron RS-35M very happily for years. Had to turn it up a tad for 
the K3.

Tip: The voltage adjustment is on the under side of the board..

73, Mike NF4L

On Apr 16, 2013, at 8:03 AM, Tom Branton  wrote:


The K3 in question is a K3/100.  Thanks,

Tom



On Apr 16, 2013, at 6:26 AM, "Tom Branton"  wrote:


Good morning everyone ,

I think I have found a very nicely maintained and equipped K3 to purchase. Any 
purchase recommendations as to a well constructed and trouble free power supply?

Thanks

Tom
WD5DFE



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--


73,

Gary K9GS

Greater Milwaukee DX Association: http://www.gmdxa.org
Society of Midwest Contesters: http://www.w9smc.com
CW Ops #1032   http://www.cwops.org



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Re: [Elecraft] KX3 remote transmitting

[Mike WA8BXN]

I too live in a river valley. While working DX has not been a priority to me
I have wondered what the effect of being in a valley may be. I do like Lynn
s response to what to do. Beyond that I would look into remote operation of
a rig on the knoll if its easy to get power there and its a secure location.

 
73 - Mike WA8BXN 
 
 
 
---Original Message--- 
 
From: Lynn W. Taylor, WB6UUT 
Date: 4/16/2013 11:21:29 PM 
To: elecraft@mailman.qth.net 
Subject: Re: [Elecraft] KX3 remote transmitting 
 
Maybe it's just me, but 
 
I think before I put a whole lot of time, money and effort into getting 
an antenna on the knoll, I'd do some experimentation down in the valley. 
 
Maybe buy a really great antenna, and if it doesn't work, re-use it on 
top of the knoll. 
 
73 -- Lynn 
 
On 4/16/2013 3:58 PM, James Denning wrote: 
> I am moving and am going to be in a challenging location. I am currently 
> 1000ft above sea level and 600ft above a valley in Oregon. I am spoiled as

> currently I can make SSB contacts in Brazil using my KX3 at 10 watts and a

> Hexbeam antenna. I will be moving into a valley surrounded by nearby 
> hills/mountains at least several hundred feet higher than my new QTH.
There 
> is a high knoll nearby I could put an antenna on that would require about 
> 1100ft of cable. Is it a dumb idea to instead put a KXPA100 or maybe a 
> KPA500 at the end of the run at the antenna base and make the long cable
run 
> between the KX3 and the amplifier rather than a straight run from my
shack? 
> Are there other better/cheaper solutions? 
> 
> 
> 
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Re: [Elecraft] KX3 remote transmitting

[Lynn W. Taylor, WB6UUT]

Maybe it's just me, but

I think before I put a whole lot of time, money and effort into getting 
an antenna on the knoll, I'd do some experimentation down in the valley.


Maybe buy a really great antenna, and if it doesn't work, re-use it on 
top of the knoll.


73 -- Lynn

On 4/16/2013 3:58 PM, James Denning wrote:

I am moving and am going to be in a challenging location.  I am currently
1000ft above sea level and 600ft above a valley in Oregon.  I am spoiled as
currently I can make SSB contacts in Brazil using my KX3 at 10 watts and a
Hexbeam antenna.  I will be moving into a valley surrounded by nearby
hills/mountains at least several hundred feet higher than my new QTH.  There
is a high knoll nearby I could put an antenna on that would require about
1100ft of cable.  Is it a dumb idea to instead put a KXPA100 or maybe a
KPA500 at the end of the run at the antenna base and make the long cable run
between the KX3 and the amplifier rather than a straight run from my shack?
Are there other better/cheaper solutions?



--
View this message in context: 
http://elecraft.365791.n2.nabble.com/KX3-remote-transmitting-tp7572708.html
Sent from the Elecraft mailing list archive at Nabble.com.
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Re: [Elecraft] KX3 DVR - glich?

[Christian AK4VV]

Gave a talk on SOTA tonight and had conversations with several other KX3
owners who have seen the same thing...

73,
Christian
AK4VV
 On Apr 13, 2013 11:20 PM, "Christian AK4VV"  wrote:

> Another updated.  What happens is this.  DVRmessage, wait interval,
> DVRmessage, wait interval, mic goes open.  Push 1 or 2 I get CHAIN message.
>  Sometimes REPEAT briefly blinks in there, but I haven't quite figured out
> what makes it happen.  When I hit any other button, END shows up and TX
> ends.
>
> 73,
> Christian
> AK4VV
>
>
> On Sat, Apr 13, 2013 at 10:11 PM, Christian AK4VV  wrote:
>
>> I have noticed the same thing during the Georgia QSO Party that I'm
>> working right now.
>>
>> Sometimes it goes to open mic after first repeat, sometimes it's the
>> dozenth, and anything inbetween.  I have to kill the repeat, and start very
>> very odd.  Can't tell that there's a pattern.
>>
>> This is on station power, latest firmware.
>>
>> 73,
>> Christian
>> AK4VV
>>
>>
>> On Mon, Feb 18, 2013 at 5:20 AM, Dominic Baines > > wrote:
>>
>>> Lyle,
>>>
>>> Tnx fer the KX3 SSB DVR functionality ...I waited a long time for this
>>> so was eager to use it and I just had a /P trip to CT and it worked great
>>> as CT7/M1KTA/P when on the beach however I noted an odd bit of behaviour...
>>>
>>> The repeat function, sometimes it would run and send (I was using for
>>> CQCQ etc) repeats as expected, other times it would send once and then key
>>> the mic line (TX light would come on) but send nothing. A reset MSG then
>>> Long 1 or 2 and it would run again fine, the message was still there.
>>>
>>> Same behaviour on internal batteries or an external power source car
>>> cigarette lighter socket.
>>>
>>> Happens often enough that it was not a one off glich any ideas?
>>>
>>> 72
>>>
>>> Dom
>>> M1KTA
>>>
>>>
>>> On 09/02/13 15:10, Lyle Johnson wrote:
>>>
 It is for messages only, not recording off the air.

 The Flash used in the KX3's DSP requires a longer erase time than it
 takes record, so it can not keep up in a real-time recording loop.

 73,

 Lyle KK7P

  Will the KX3 DVR be able to record what the receiver is hearing or
> just what the mic hears?
>

>>> __**__**__
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>>> http://mailman.qth.net/**mailman/listinfo/elecraft
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>>>
>>
>>
>
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Re: [Elecraft] KX3 remote transmitting

[Ron D'Eau Claire]

That's how the commercial HF stations did it. Keep in mind they used real
ladder line and NOT "window line" that is frequently mislabeled "ladder
line". 

True ladder line has large diameter conductors (usually No. 12 or larger
wires) and only enough insulator bars separating them to keep the wires
stable. That's compared to the window line that has a brown (polyethylene I
believe) web between two much smaller wires with openings (windows) cut into
the webbing. 

Window line works reasonably well, but does not have the stability and low
losses of true ladder line, especially for long runs. One of its biggest
drawbacks is that moisture, ice, snow, etc., can change its characteristics
appreciably in spite of the windows. Ladder line does not suffer such
changes unless it's buried in snow or iced over. 

73 Ron AC7AC

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Doug VE3VS
Sent: Tuesday, April 16, 2013 6:21 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KX3 remote transmitting

Years ago I worked a chap ( maybe in Wyoming or Montana ) in a similar QTH.
He had built an "open wire" line suspended on posts with fencing insulators,
every so far, to keep the lines taut in the breeze, over a huge distance . .
can't recall for sure, but I think it could have been up a steep slope as
much as a mile to find clear horizons. Baluns at both ends of the twin
feeders . . I think there was more going on there, that is, switching of
different antennas, rotators, etc. but it certainly worked. Not a small
project I would say.



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15.html
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Re: [Elecraft] K3 recomended setup

[Jim Lowman]

Gus, are you going to be using your K3 in a marine, or extremely humid, 
climate?

If not, I'd ship the K3SSKT.

The beauty of the K3 (and the KX3) is that if the budget today won't 
permit adding all of the options that you want, you can add them easily 
at a later date.


73 de Jim - AD6CW

On 4/16/2013 6:42 PM, Gustavo Villada wrote:

Hi guys,


I'm (old) new in ham world, I'm returning after 15 years offline...
now I have free time, and I'm reintroducing me to ham world again :)

right now I'm using local club gear, and I'm interested reenter into
hf with ssb, cw and data modes...


I has been read for several weeks about current technology and even
when I was locking into Big3, I got real good words about Elecraft.


now my problem is that I don't know exactly if I have choose a good
setup or I over/under select something...


I've already selected the next setup, I wish put all option, but I
haven't the budged ;)

K3/100 K3 100W Xcvr. (Modular Kit)
K3SSKT K3 Stainless H/W Kit
KAT3 K3 ATU (Modular Kit)
KFL3A-500 K3 500 Hz, 5 pole filter
KUSB Univ. Ser Bus Adapt.
KXV3A K3 RX Ant, IF Out & Xvrtr Intf.
MH2 Hand Mic. for K2/K3.


any suggestion, ear pull, or whatever is welcome

Gus
LU6HXV



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Re: [Elecraft] K3 Keying external Amps

[Bill Wiehe]

Hi Richard,
I simply build a small switch box from parts I had. One input and two outputs 
that you can switch between. If you are short on parts you can probably find 
everything at your local Radio Shack.
Bill - W0BBI
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[Elecraft] K3 recomended setup

[Gustavo Villada]

Hi guys,


I'm (old) new in ham world, I'm returning after 15 years offline...
now I have free time, and I'm reintroducing me to ham world again :)

right now I'm using local club gear, and I'm interested reenter into
hf with ssb, cw and data modes...


I has been read for several weeks about current technology and even
when I was locking into Big3, I got real good words about Elecraft.


now my problem is that I don't know exactly if I have choose a good
setup or I over/under select something...


I've already selected the next setup, I wish put all option, but I
haven't the budged ;)

K3/100 K3 100W Xcvr. (Modular Kit)
K3SSKT K3 Stainless H/W Kit
KAT3 K3 ATU (Modular Kit)
KFL3A-500 K3 500 Hz, 5 pole filter
KUSB Univ. Ser Bus Adapt.
KXV3A K3 RX Ant, IF Out & Xvrtr Intf.
MH2 Hand Mic. for K2/K3.


any suggestion, ear pull, or whatever is welcome

Gus
LU6HXV
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Re: [Elecraft] KX3 remote transmitting

[Doug VE3VS]

Years ago I worked a chap ( maybe in Wyoming or Montana ) in a similar QTH.
He had built an "open wire" line suspended on posts with fencing insulators,
every so far, to keep the lines taut in the breeze, over a huge distance . .
can't recall for sure, but I think it could have been up a steep slope as
much as a mile to find clear horizons. Baluns at both ends of the twin
feeders . . I think there was more going on there, that is, switching of
different antennas, rotators, etc. but it certainly worked. Not a small
project I would say.



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[Elecraft] OT: American Morse Equipment

[Johnny Siu]

OFF-TOPIC, press DEL if you don't want to read.
 
Hello elecrafters,
 
In the past week, I sent a number of emails to 
http://www.americanmorse.com/dcp.htm about purchasing their DCP iambic paddle 
kit.  However, no reply has been received so far.
 
Could any of you advise whether this company is still in business?  Grateful if 
you could reply off-the-list and excuse me for the bandwidth here.DDCP 
Miniature Iambic Paddle KitCP Miniature Iambic Paddle Kit

TNX & 73,


Johnny VR2XMC
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[Elecraft] Used FT-897D wanted

[Niel Skousen]

A friend is looking for a used FT-897D.   If you retired one to buy your K3 ( 
8-)  or have one available, please drop him a line (off the list) at 
craiglabrum  yahoo.com

Thanks
Niel
WA7SSA
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[Elecraft] Power display

[Allen Griffith]

Hello Elecraft,
What is the possibility of having the power output setting displayed on VFO B 
in addition or in place of one of the existing display functions?

Griff  N5AG
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Re: [Elecraft] KX3 remote transmitting

[Wes]

1100 feet of 7/8" Heliax would have about 2dB loss at 30 MHz.   That's the 
$7000 solution. But it works well on receive too. :-)

Something like LMR-400 will cost about $1100 and have about 7dB loss. A KPA-500 
has about that much gain.  I would keep it in the shack. That's the $3200 
solution. 

Either way you still have a 10 Watt radio.

 Another consideration would be to look for some surplus 7/8" CATV cable. In 
years gone by, I've been given the stuff as it was being removed from power 
poles.  That could be a near zero cost option. 

Last you could try remotely controlling the radio. 

Wes. N7WS

Laboriously typed on my iPhone. 

On Apr 16, 2013, at 3:58 PM, James Denning  wrote:

> I am moving and am going to be in a challenging location.  I am currently
> 1000ft above sea level and 600ft above a valley in Oregon.  I am spoiled as
> currently I can make SSB contacts in Brazil using my KX3 at 10 watts and a
> Hexbeam antenna.  I will be moving into a valley surrounded by nearby
> hills/mountains at least several hundred feet higher than my new QTH.  There
> is a high knoll nearby I could put an antenna on that would require about
> 1100ft of cable.  Is it a dumb idea to instead put a KXPA100 or maybe a
> KPA500 at the end of the run at the antenna base and make the long cable run
> between the KX3 and the amplifier rather than a straight run from my shack? 
> Are there other better/cheaper solutions?
> 
> 
> 
> --
> View this message in context: 
> http://elecraft.365791.n2.nabble.com/KX3-remote-transmitting-tp7572708.html
> Sent from the Elecraft mailing list archive at Nabble.com.
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Re: [Elecraft] K3 Keying external Amps

[Lance Collister, W7GJ]

Hi Richard,

If both amplifiers use transistor switching, you may be able to simply connect the 
two in parallel and use the K3 to activate whatever amp is turned on.  I am sure 
there must be better ways to do it, but simple often has a lot going for it.I 
have the key out of my K3 connected to a TE SYSTEMS 0552G amp for 6m and a Mierage 
B1016 amp for 2m.   No problems yet   GL and VY 73, Lance



On 4/16/2013 9:03 PM, Richard Thorpe wrote:

I have a K3 and want to key two different external amplifiers.  The K3 has one "key 
out" line this I use to key an Expert 1K 160-6 meter amp.  Now that I've installed a 
K144XV board I want to key a 144Mhz block amp.  I wondered how my fellow hams are keying 
two seperate amps separately with one key line?  Thank you.

R Thorpe K6CG
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--
Lance Collister, W7GJ
(ex WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8, E51SIX, 3D2LR, 5W0GJ, E6M)
P.O. Box 73
Frenchtown, MT   59834-0073
USA
TEL: (406) 626-5728
QTH: DN27ub
URL: http://www.bigskyspaces.com/w7gj
Windows Messenger: w...@hotmail.com
Skype: lanceW7GJ
2m DXCC #11/6m DXCC #815

Interested in 6m EME?  Ask me about subscribing to the Magic Band EME
email group, or just fill in the request box at the bottom of my web
page (above)!

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Re: [Elecraft] P3 desires

[Ed]

I can think of a number of things that could be useful in the band pass window. 
 In addition to the notch I would have use for an indicator for the receive 
offset frequency and also the peak filter.  Things could get busy unless things 
were set up on a selective basis.

K6ED
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[Elecraft] KX3 remote transmitting

[James Denning]

I am moving and am going to be in a challenging location.  I am currently
1000ft above sea level and 600ft above a valley in Oregon.  I am spoiled as
currently I can make SSB contacts in Brazil using my KX3 at 10 watts and a
Hexbeam antenna.  I will be moving into a valley surrounded by nearby
hills/mountains at least several hundred feet higher than my new QTH.  There
is a high knoll nearby I could put an antenna on that would require about
1100ft of cable.  Is it a dumb idea to instead put a KXPA100 or maybe a
KPA500 at the end of the run at the antenna base and make the long cable run
between the KX3 and the amplifier rather than a straight run from my shack? 
Are there other better/cheaper solutions?



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Re: [Elecraft] Unterminated PR6, was RE: PR6 Clarification

[iain macdonnell - N6ML]

AFAIK, that should be OK, Fred. So long as RX ANT is OFF, it doesn't
matter whether the PR6 is on or off, as it will not be in the RF path.

73,

~iain / N6ML


On Tue, Apr 16, 2013 at 11:01 AM, Cady, Fred  wrote:
> The conditions are:
>
> The PR6 is powered-on (say an external supply or the K3's 12v output) AND you 
> are not on 6 m AND DIGOUT1 is low (if, say, you are using it to disable the 
> KPA500 on some - maybe high swr and you don't want to run the amp) AND RX ANT 
> is not selected.
>
> When this is the case, DIGOUT1 switches the PR6 input to Preamp In and its 
> output to Preamp Out, but without RX ANT selected the main antenna is not 
> routed through the PR6. This leaves the PR6 input and output floating (unlike 
> when DIGOUT1 is high when the input and output of the PR6 are terminated in 
> 50 ohms).
>
> So my question: Is that a problem for the PR6?
>
> Cheers,
> Fred
>
> Fred Cady
> fcady at ieee dot org
>
>> -Original Message-
>> From: dse...@dseven.org [mailto:dse...@dseven.org] On Behalf Of iain
>> macdonnell - N6ML
>> Sent: Tuesday, April 16, 2013 9:50 AM
>> To: Cady, Fred
>> Cc: Elecraft Reflector
>> Subject: Re: [Elecraft] PR6 Clarification
>>
>> Hi Fred,
>>
>> I'm not sure I completely understand your question, but my PR6 is on
>> all the time (it is not connected to the K3's ACC port), and I just
>> use RX ANT on 6m to bring it in-line. This is not a problem for me,
>> since I do not have any other RX ants that I need to feed through the
>> PR6 for other bands. AFAIK, this is a "supported configuration".
>>
>> 73,
>>
>> ~iain / N6ML
>>
>>
>> On Tue, Apr 16, 2013 at 7:44 AM, Cady, Fred 
>> wrote:
>> > Hey, Ian (and others),
>> > What do you think about having the PR6 powered-up and controlled-on
>> with DIGOUT1 while on another band with RX ANT not enabled? It looks
>> like the PR6 input and outputs are floating. Do you think that is a
>> problem for the PR6?
>> >
>> > Fred
>> >
>> >
>> > Fred Cady
>> > fcady at ieee dot org
>> >
>> >> -Original Message-
>> >> From: dse...@dseven.org [mailto:dse...@dseven.org] On Behalf Of iain
>> >> macdonnell - N6ML
>> >> Sent: Tuesday, April 16, 2013 7:55 AM
>> >> To: Jim Miller
>> >> Cc: Cady, Fred; Elecraft Reflector
>> >> Subject: Re: [Elecraft] PR6 Clarification
>> >>
>> >> On Tue, Apr 16, 2013 at 5:31 AM, Jim Miller 
>> wrote:
>> >> > It seems like it would be an easy thing to implement in the
>> KPA500.
>> >> Per
>> >> > Band Standby.
>> >>
>> >> Good idea - why didn't I think of it? Oh, wait, I did :)
>> >>
>> >> http://elecraft.365791.n2.nabble.com/KPA500-feature-suggestion-band-
>> >> bypass-td6247211.html
>> >>
>> >> Hasn't transpired so-far, though
>> >>
>> >> 73,
>> >>
>> >> ~iain / N6ML
>> >>
>> >>
>> >> > On Mon, Apr 15, 2013 at 11:18 PM, Cady, Fred
>> 
>> >> wrote:
>> >> >
>> >> >> Hi Jim,
>> >> >>
>> >> >> What I'd like to be able to do is to disable the amp on some
>> bands
>> >> (e.g.
>> >> >> 30 m), by asserting  (low) DIGOUT1 (and setting KPA500 INHIB IN
>> to
>> >> ENABLE)
>> >> >> but to have the amp enabled for 6m when DIGOUT1 is low to turn on
>> >> the PR6.
>> >> >> I'm just lazy, that's all. Plus it's fun to think about!
>> >> >>
>> >> >> Cheers,
>> >> >>
>> >> >> Fred
>> >> >>
>> >> >> ** **
>> >> >>
>> >> >> ** **
>> >> >>
>> >> >> Fred Cady
>> >> >> fcady at ieee dot org 
>> >> >>
>> >> >> *From:* jtmille...@gmail.com [mailto:jtmille...@gmail.com] *On
>> >> Behalf Of *Jim
>> >> >> Miller
>> >> >> *Sent:* Monday, April 15, 2013 8:52 PM
>> >> >> *To:* Cady, Fred
>> >> >>
>> >> >> *Cc:* Elecraft Reflector
>> >> >> *Subject:* Re: [Elecraft] PR6 Clarification
>> >> >>
>> >> >> ** **
>> >> >>
>> >> >> I'm not getting the importance of a Pin 11 solution. I just
>> disable
>> >> the
>> >> >> KPA500 sensing of that pin by the menu selection. I don't see the
>> >> need for
>> >> >> it.
>> >> >>
>> >> >>  
>> >> >>
>> >> >> I'm definitely running the KPA500 on 6m.
>> >> >>
>> >> >>  
>> >> >>
>> >> >> If for some strange reason Pin 11 is asserted it just causes the
>> >> KPA500 to
>> >> >> be inhibited, not turned on, which is a failsafe direction.
>> >> >>
>> >> >>  
>> >> >>
>> >> >> 73
>> >> >>
>> >> >>  
>> >> >>
>> >> >> jim ab3cv
>> >> >>
>> >> >> ** **
>> >> >>
>> >> >> On Mon, Apr 15, 2013 at 9:50 PM, Cady, Fred
>> 
>> >> wrote:
>> >> >> 
>> >> >>
>> >> >> Ahh, looking back at my notes I see the other solution would be
>> to
>> >> make
>> >> >> the KPA500 INHIBIT IN be per/band. But you would still have to
>> take
>> >> care of
>> >> >> not turning on the PR6 when DIGOUT1 is low with some external
>> logic
>> >> if you
>> >> >> cared about that.
>> >> >>
>> >> >> KE7X
>> >> >>
>> >> >>
>> >> >> Fred Cady
>> >> >> fcady at ieee dot org
>> >> >>
>> >> >> > -Original Message-
>> >> >> > From: elecraft-boun...@mailman.qth.net [mailto:elecraft-
>> >> >>
>> >> >> > boun...@mailman.qth.net] On Behalf Of Cady, Fred

Re: [Elecraft] P3 desires

[Bill [NS4C]]

Like you I am still waiting for the promised P3 transmit signal monitor
option. 

73  Bill  NS4C


-Original Message-

Sent: Tuesday, April 16, 2013 4:44 PM
To: Bill Frantz
Cc: Elecraft@mailman.qth.net
Subject: Re: [Elecraft] P3 desires

Bill,

Your number 3 would be helpful and has been long promised and was, I was
told, on the list at either number one or two...since then, not a word so
not sure when/if it will see the light of day.

I may be in the minority, but I bought my P3 with this feature in mind and I
was told it would be implemented in the future but I am not sure how
'future' relates to the present...:-)   (of course age creates some spacial
discrepancies..TIC)

The Sensor input on the rear of the P3 I was told is for the Tx monitoring.

Other folks here may know some more.

73

On 17 April 2013 06:37, Bill Frantz  wrote:

> I have been using the P3 for a while now and have a few desires:
>
> (1) When the notch filter is active, show where it is in the green 
> filter bandwidth display. I found I could easily know when to turn the 
> notch filter off when using auto-notch in SSB by watching the P3 
> display. I could not do the same when using manual notch to eliminate a
strong PSK signal.
>
> (2) Save the display parameters -- scale, span, ref lvl etc. -- by 
> band and mode. I like a very wide span for SSB so I can see many 
> stations and a narrow one for PSK so I can see individual stations.
>
> And more controversially:
>
> (3) Keep the waterfall running during transmit so the display gives a 
> sense of elapsed time. This change would occur naturally if the P3 is 
> modified to monitor the transmitted signal. (Monitoring the 
> transmitted signal might help us PSK folk keep our signals clean too.)
>
> What do people think?
>
> Cheers - Bill, AE6JV
>
> --**--**
> ---
> Bill Frantz|"Web security is like medicine - trying to do good for
> 408-356-8506   |an evolved body of kludges" - Mark Miller
> www.pwpconsult.com |
>
> __**__**__
> Elecraft mailing list
> Home: 
> http://mailman.qth.net/**mailman/listinfo/elecraft net/mailman/listinfo/elecraft>
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> http://mailman.qth.net/mmfaq.**htm
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>
> This list hosted by: http://www.qsl.net Please help support this email 
> list: http://www.qsl.net/donate.html
>



--
*Gary - VK1ZZ
Skype: Gary.VK1ZZ
Motorhome Portable
The Shack*
*Elecraft K3
P3 Panadapter
KPA500FT
KAT500FT**
KX3-K
*
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Re: [Elecraft] K3 Keying external Amps

[Fred Smith]

My 300w brick only need RF to it no key line needed.


73,
Fred/N0AZZ
K3 Ser #'s 6730/5299--KX3 # 2573--K2/100--KAT100
P3/SVGA--KPA500--KAT500--W2



-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Richard Thorpe
Sent: Tuesday, April 16, 2013 4:03 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] K3 Keying external Amps

I have a K3 and want to key two different external amplifiers.  The K3 has
one "key out" line this I use to key an Expert 1K 160-6 meter amp.  Now that
I've installed a K144XV board I want to key a 144Mhz block amp.  I wondered
how my fellow hams are keying two seperate amps separately with one key
line?  Thank you.

R Thorpe K6CG
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-
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2013.0.2904 / Virus Database: 3162/6248 - Release Date: 04/16/13

-
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2013.0.2904 / Virus Database: 3162/6248 - Release Date: 04/16/13

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[Elecraft] K3 Keying external Amps

[Richard Thorpe]

I have a K3 and want to key two different external amplifiers.  The K3 has one 
"key out" line this I use to key an Expert 1K 160-6 meter amp.  Now that I've 
installed a K144XV board I want to key a 144Mhz block amp.  I wondered how my 
fellow hams are keying two seperate amps separately with one key line?  Thank 
you.

R Thorpe K6CG
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Re: [Elecraft] P3 desires

[Gary Gregory]

Bill,

Your number 3 would be helpful and has been long promised and was, I was
told, on the list at either number one or two...since then, not a word so
not sure when/if it will see the light of day.

I may be in the minority, but I bought my P3 with this feature in mind and
I was told it would be implemented in the future but I am not sure how
'future' relates to the present...:-)   (of course age creates some spacial
discrepancies..TIC)

The Sensor input on the rear of the P3 I was told is for the Tx monitoring.

Other folks here may know some more.

73

On 17 April 2013 06:37, Bill Frantz  wrote:

> I have been using the P3 for a while now and have a few desires:
>
> (1) When the notch filter is active, show where it is in the green filter
> bandwidth display. I found I could easily know when to turn the notch
> filter off when using auto-notch in SSB by watching the P3 display. I could
> not do the same when using manual notch to eliminate a strong PSK signal.
>
> (2) Save the display parameters -- scale, span, ref lvl etc. -- by band
> and mode. I like a very wide span for SSB so I can see many stations and a
> narrow one for PSK so I can see individual stations.
>
> And more controversially:
>
> (3) Keep the waterfall running during transmit so the display gives a
> sense of elapsed time. This change would occur naturally if the P3 is
> modified to monitor the transmitted signal. (Monitoring the transmitted
> signal might help us PSK folk keep our signals clean too.)
>
> What do people think?
>
> Cheers - Bill, AE6JV
>
> --**--**
> ---
> Bill Frantz|"Web security is like medicine - trying to do good for
> 408-356-8506   |an evolved body of kludges" - Mark Miller
> www.pwpconsult.com |
>
> __**__**__
> Elecraft mailing list
> Home: 
> http://mailman.qth.net/**mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.**htm
> Post: mailto:elecr...@mailman.qth.**net 
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>



-- 
*Gary - VK1ZZ
Skype: Gary.VK1ZZ
Motorhome Portable
The Shack*
*Elecraft K3
P3 Panadapter
KPA500FT
KAT500FT**
KX3-K
*
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[Elecraft] P3 desires

[Bill Frantz]

I have been using the P3 for a while now and have a few desires:

(1) When the notch filter is active, show where it is in the 
green filter bandwidth display. I found I could easily know when 
to turn the notch filter off when using auto-notch in SSB by 
watching the P3 display. I could not do the same when using 
manual notch to eliminate a strong PSK signal.


(2) Save the display parameters -- scale, span, ref lvl etc. -- 
by band and mode. I like a very wide span for SSB so I can see 
many stations and a narrow one for PSK so I can see individual stations.


And more controversially:

(3) Keep the waterfall running during transmit so the display 
gives a sense of elapsed time. This change would occur naturally 
if the P3 is modified to monitor the transmitted signal. 
(Monitoring the transmitted signal might help us PSK folk keep 
our signals clean too.)


What do people think?

Cheers - Bill, AE6JV

---
Bill Frantz|"Web security is like medicine - trying to 
do good for

408-356-8506   |an evolved body of kludges" - Mark Miller
www.pwpconsult.com |

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Re: [Elecraft] SCAM

[Fred Townsend]

The license is 5 months expired too.

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of tnny...@yahoo.com
Sent: Tuesday, April 16, 2013 10:59 AM
To: Elecraft@mailman.qth.net
Subject: [Elecraft] SCAM

 Listing #1060014on    QTH seems to be a SCAM 

AB6OZ  is located in San Jose CA, yet the IP is showing somewhere in France.


(((73 Milverton
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Re: [Elecraft] question on old topic K3 Key-down on power-up [Solution?]"

[EricJ]

It's not a K3 "feature" either. It happens with my K2 for the same 
reason. The computer tests the serial port and if the K2 is on, the PTT 
gets keyed. No fix other than to put the rig in Test or turn it off when 
booting the computer.


Eric
KE6US

On 4/16/2013 11:52 AM, Don Wilhelm wrote:

Lee,

That behavior is NOT dependent on when the K3 is powered up - unless 
the K3 is powered on only after the computer completes its boot cycle 
and the OS is loaded.


It does happen every time the computer boots - the computer port 
testing will activate the DTR and RTS lines for a short time.

There is nothing in the K3 that can prevent that from occurring.

Yes, if you have the K3 menu set to use DTR or RTS for PTT or keying, 
it would be a good idea for you to place the K3 into TX TEST whenever 
the computer is powered up.


73,
Don W3FPR

On 4/16/2013 1:55 PM, Lee Hill wrote:

Hi:

I recently purchased a used K3.

I have noticed the exact problem described in posts in 2008,
http://marc.info/?l=elecraft&m=121462133723056&w=2

where the K3 goes into transmit due to a connected computer's serial 
port
-  when the computer first powers up and the serial port has not yet 
been

configured by a logging or serial control program.

The undesired behavior stems from the K3 PTT being asserted by the 
computer

at the rig's serial port via DTR or RTS (depending on the K3 setup) The
problem goes away after the logging or serial port control program is
launched.

Was a feature discussed in the above post implemented in later firmware?
  The feature is the rig detects an asserted PTT during the first 
couple of
seconds of power up and goes into TX test mode and/or displays and 
error.


I haven't done any HW or firmware upgrades to the rig yet.




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Re: [Elecraft] SCAM

[Rick Prather]

A common feature of these these possible scams is the poor fellow who's call 
they use never has an email address on QRZ.com, like this one.

Certainly raises a yellow flag of caution for me.

Rick
K6LE

On 4/16/2013, at 10:58 , tnny...@yahoo.com wrote:

>  Listing #1060014onQTH seems to be a SCAM 
> 
> AB6OZ  is located in San Jose CA, yet the IP is showing somewhere in France.
> 
> 
> (((73 Milverton
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Re: [Elecraft] question on old topic K3 Key-down on power-up [Solution?]"

[Don Wilhelm]

Lee,

That behavior is NOT dependent on when the K3 is powered up - unless the 
K3 is powered on only after the computer completes its boot cycle and 
the OS is loaded.


It does happen every time the computer boots - the computer port testing 
will activate the DTR and RTS lines for a short time.

There is nothing in the K3 that can prevent that from occurring.

Yes, if you have the K3 menu set to use DTR or RTS for PTT or keying, it 
would be a good idea for you to place the K3 into TX TEST whenever the 
computer is powered up.


73,
Don W3FPR

On 4/16/2013 1:55 PM, Lee Hill wrote:

Hi:

I recently purchased a used K3.

I have noticed the exact problem described in posts in 2008,
http://marc.info/?l=elecraft&m=121462133723056&w=2

where the K3 goes into transmit due to a connected computer's serial port
-  when the computer first powers up and the serial port has not yet been
configured by a logging or serial control program.

The undesired behavior stems from the K3 PTT being asserted by the computer
at the rig's serial port via DTR or RTS (depending on the K3 setup) The
problem goes away after the logging or serial port control program is
launched.

Was a feature discussed in the above post implemented in later firmware?
  The feature is the rig detects an asserted PTT during the first couple of
seconds of power up and goes into TX test mode and/or displays and error.

I haven't done any HW or firmware upgrades to the rig yet.




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Re: [Elecraft] K3 power supply recommendations

[Jim Wiley]

Bill -

Older Astron power supplies can continue to give good service, there is 
no reason to replace it unlessit seems to have a problem.


One of the things that does go bad in these supplies, particularly ones 
of this vintage, is that the main filter capacitor "loses its 
microfarads"(dries out).  The capacitor has to handle a fairly large 
ripple current, especially if the power supply is working hard, and that 
in turn can have detrimental effects onthe big capacitor.   I recently 
encountered a RS-35A with exactly that symptom, the power would dip 
momentarily at voice peaks when running a 100-watt transceiver.  The 
voltage was fine for receiving and anything less than full output, but 
when  a big voice (or CW) peak came along that demanded more than about 
16 amperes from the supply, it lost regulation, which caused all sorts 
of weird and wonderful things to happen to the transceiver -such as loss 
of PLL lock, frequency shifting, mode shifting, and so on. .


The cure was to replace the 30,000 uFd / 30V capacitor in the RS-35A 
with a newunit.  As it turned out, new capacitors of that exact 
specification were a bit hard to find, and expensive, but a search of 
theMouser catalog turned up a great choice. I found a 33,000 uFd / 35 
volt unit for a reasonable price (about $35.00 including priority mail 
postage).  The new cap is both a bit smaller (physically) than the 
original, and has significantly better specifications.  The Mouser part 
number is 647-LNT1V333MSE.  The new capacitor has the same connection 
terminal spacing, so the control board just bolted on.  I did mount the 
board slightly differently, but that is justpersonal preference.  The 
original mounting method will work fine.


Here (I hope) isa direct link to the Mouser catalog page: 
647-LNT1V333MSE 



Result: The oldAstron gets  new lease on life - it works just like brand 
new, and I expect may more yearsof service.


Perhaps the Astron RS-35A that you have is still working OK, but it may 
be getting a bit creaky, so to speak. Replacing the main filter cap 
can't hurt, and will go a long way toward insuring trouble free 
operation for years to come.


YMMV, of course. No connection with any vendors or manufacturers, just 
satisfied with the results at what I considered a fair price.  Any yes, 
I thought about some of the large computer power supply caps that were 
in my junk box, and I might have tried one if it was "close" - but after 
a bit of thought, the new unit was a better choice and might in the long 
run prove to be less expensive.  Asurplus unit could have its own 
problems, possibly causing a more catastrophic failure.



- Jim, KL7CC



On 4/16/2013 7:27 AM, Bill wrote:
My RS-35A has been on and in use 24/7 (except during storms and 
vacations) for well over 25 years. I plan on replacing it "just 
because" this summer - with a new one.


Bill W2BLC


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Re: [Elecraft] Unterminated PR6, was RE: PR6 Clarification

[Jim Brown]

On 4/16/2013 11:01 AM, Cady, Fred wrote:

This leaves the PR6 input and output floating


We have a problem of symantics. All uses I've seen of "floating" with 
respect to electronic circuits mean that the circuit has no "ground 
reference."



(unlike when DIGOUT1 is high when the input and output of the PR6 are 
terminated in 50 ohms).


The word most commonly used to describe a circuit with no connected load 
is "unterminated."



So my question: Is that a problem for the PR6?


I see no reason why it should be a problem unless it's badly designed, 
which is unlikely -- it's essentially a fairly low gain preamp with low 
input and output impedances.  Preamps of this sort are usually designed 
for use at the top of a tower, where they are relay-switched between TX 
and RX.


73, Jim K9YC
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[Elecraft] Unterminated PR6, was RE: PR6 Clarification

[Cady, Fred]

The conditions are:

The PR6 is powered-on (say an external supply or the K3's 12v output) AND you 
are not on 6 m AND DIGOUT1 is low (if, say, you are using it to disable the 
KPA500 on some - maybe high swr and you don't want to run the amp) AND RX ANT 
is not selected.

When this is the case, DIGOUT1 switches the PR6 input to Preamp In and its 
output to Preamp Out, but without RX ANT selected the main antenna is not 
routed through the PR6. This leaves the PR6 input and output floating (unlike 
when DIGOUT1 is high when the input and output of the PR6 are terminated in 50 
ohms).

So my question: Is that a problem for the PR6?

Cheers,
Fred

Fred Cady
fcady at ieee dot org

> -Original Message-
> From: dse...@dseven.org [mailto:dse...@dseven.org] On Behalf Of iain
> macdonnell - N6ML
> Sent: Tuesday, April 16, 2013 9:50 AM
> To: Cady, Fred
> Cc: Elecraft Reflector
> Subject: Re: [Elecraft] PR6 Clarification
>
> Hi Fred,
>
> I'm not sure I completely understand your question, but my PR6 is on
> all the time (it is not connected to the K3's ACC port), and I just
> use RX ANT on 6m to bring it in-line. This is not a problem for me,
> since I do not have any other RX ants that I need to feed through the
> PR6 for other bands. AFAIK, this is a "supported configuration".
>
> 73,
>
> ~iain / N6ML
>
>
> On Tue, Apr 16, 2013 at 7:44 AM, Cady, Fred 
> wrote:
> > Hey, Ian (and others),
> > What do you think about having the PR6 powered-up and controlled-on
> with DIGOUT1 while on another band with RX ANT not enabled? It looks
> like the PR6 input and outputs are floating. Do you think that is a
> problem for the PR6?
> >
> > Fred
> >
> >
> > Fred Cady
> > fcady at ieee dot org
> >
> >> -Original Message-
> >> From: dse...@dseven.org [mailto:dse...@dseven.org] On Behalf Of iain
> >> macdonnell - N6ML
> >> Sent: Tuesday, April 16, 2013 7:55 AM
> >> To: Jim Miller
> >> Cc: Cady, Fred; Elecraft Reflector
> >> Subject: Re: [Elecraft] PR6 Clarification
> >>
> >> On Tue, Apr 16, 2013 at 5:31 AM, Jim Miller 
> wrote:
> >> > It seems like it would be an easy thing to implement in the
> KPA500.
> >> Per
> >> > Band Standby.
> >>
> >> Good idea - why didn't I think of it? Oh, wait, I did :)
> >>
> >> http://elecraft.365791.n2.nabble.com/KPA500-feature-suggestion-band-
> >> bypass-td6247211.html
> >>
> >> Hasn't transpired so-far, though
> >>
> >> 73,
> >>
> >> ~iain / N6ML
> >>
> >>
> >> > On Mon, Apr 15, 2013 at 11:18 PM, Cady, Fred
> 
> >> wrote:
> >> >
> >> >> Hi Jim,
> >> >>
> >> >> What I'd like to be able to do is to disable the amp on some
> bands
> >> (e.g.
> >> >> 30 m), by asserting  (low) DIGOUT1 (and setting KPA500 INHIB IN
> to
> >> ENABLE)
> >> >> but to have the amp enabled for 6m when DIGOUT1 is low to turn on
> >> the PR6.
> >> >> I'm just lazy, that's all. Plus it's fun to think about!
> >> >>
> >> >> Cheers,
> >> >>
> >> >> Fred
> >> >>
> >> >> ** **
> >> >>
> >> >> ** **
> >> >>
> >> >> Fred Cady
> >> >> fcady at ieee dot org 
> >> >>
> >> >> *From:* jtmille...@gmail.com [mailto:jtmille...@gmail.com] *On
> >> Behalf Of *Jim
> >> >> Miller
> >> >> *Sent:* Monday, April 15, 2013 8:52 PM
> >> >> *To:* Cady, Fred
> >> >>
> >> >> *Cc:* Elecraft Reflector
> >> >> *Subject:* Re: [Elecraft] PR6 Clarification
> >> >>
> >> >> ** **
> >> >>
> >> >> I'm not getting the importance of a Pin 11 solution. I just
> disable
> >> the
> >> >> KPA500 sensing of that pin by the menu selection. I don't see the
> >> need for
> >> >> it.
> >> >>
> >> >>  
> >> >>
> >> >> I'm definitely running the KPA500 on 6m.
> >> >>
> >> >>  
> >> >>
> >> >> If for some strange reason Pin 11 is asserted it just causes the
> >> KPA500 to
> >> >> be inhibited, not turned on, which is a failsafe direction.
> >> >>
> >> >>  
> >> >>
> >> >> 73
> >> >>
> >> >>  
> >> >>
> >> >> jim ab3cv
> >> >>
> >> >> ** **
> >> >>
> >> >> On Mon, Apr 15, 2013 at 9:50 PM, Cady, Fred
> 
> >> wrote:
> >> >> 
> >> >>
> >> >> Ahh, looking back at my notes I see the other solution would be
> to
> >> make
> >> >> the KPA500 INHIBIT IN be per/band. But you would still have to
> take
> >> care of
> >> >> not turning on the PR6 when DIGOUT1 is low with some external
> logic
> >> if you
> >> >> cared about that.
> >> >>
> >> >> KE7X
> >> >>
> >> >>
> >> >> Fred Cady
> >> >> fcady at ieee dot org
> >> >>
> >> >> > -Original Message-
> >> >> > From: elecraft-boun...@mailman.qth.net [mailto:elecraft-
> >> >>
> >> >> > boun...@mailman.qth.net] On Behalf Of Cady, Fred
> >> >> > Sent: Monday, April 15, 2013 7:42 PM
> >> >> > To: 'Elecraft Reflector'
> >> >> > Subject: Re: [Elecraft] PR6 Clarification
> >> >> >
> >> >> > K4RX's inhibit line inhibiter for pin 11 is the same idea as
> the
> >> >> > keyline inhibiter for pin 10. However, it is not really needed
> >> because
> >> >> > one can set the KPA500 INHIB IN menu to DISABLE so a low on pin
> 11
> >> will
> >> >> > 

[Elecraft] SCAM

[tnnyswy]

 Listing #1060014on    QTH seems to be a SCAM 

AB6OZ  is located in San Jose CA, yet the IP is showing somewhere in France.


(((73 Milverton
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[Elecraft] question on old topic K3 Key-down on power-up [Solution?]"

[Lee Hill]

Hi:

I recently purchased a used K3.

I have noticed the exact problem described in posts in 2008,
http://marc.info/?l=elecraft&m=121462133723056&w=2

where the K3 goes into transmit due to a connected computer's serial port
-  when the computer first powers up and the serial port has not yet been
configured by a logging or serial control program.

The undesired behavior stems from the K3 PTT being asserted by the computer
at the rig's serial port via DTR or RTS (depending on the K3 setup) The
problem goes away after the logging or serial port control program is
launched.

Was a feature discussed in the above post implemented in later firmware?
 The feature is the rig detects an asserted PTT during the first couple of
seconds of power up and goes into TX test mode and/or displays and error.

I haven't done any HW or firmware upgrades to the rig yet.

thank you

Lee
N1BA
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Re: [Elecraft] KX3 as an antenna analyser

[Martin]

Please, please , do not transmit FM on any shortwave band except on 10m 
high in the band.

Not for tuning, not for testing, not to make contacts.
Just don't.

What a waste of resources.

--

Ohne CW ist es nur CB..

73, Martin DM4iM
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[Elecraft] PR6 & KPA500 summary?

[Jim McDonald]

I haven't paid close enough attention to the PR6/KPA500 postings and would
appreciate guidance on what I need to do.

I recently added a KPA500 to my K3/PR6.  I have two Y-cables connected to my
K3 for my Top Ten Devices band decoder, PR6, the FSK line from my microKEYER
II, and the KPA500.  The PR6 gets power from the K3, though I have a power
supply for other accessories that I could use to power the PR6.

What do I need to change?


73, Jim N7US





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[Elecraft] Astron 35VM

[Edward R Cole]

Just a note to those with or looking to acquire an Astron PS for a 
100w HF station:


I have owned an Astron 35VM for many years (bought new in 1981) and 
only had to replace the regulator chip when I reversed bias trying to 
use is as batter charger.  Otherwise perfect service.  Being an 
analog PS there is no RFI.


Note I got both the meters and variable voltage and current.  The 
supply has been my bench supply for over a decade and having the 
metering and variable settings very helpful in testing and repair work.


My main station "12vdc" PS is an Astron 50M.  It runs at 14.2 vdc to 
handle the 0.5v voltage drop thru 15-foot of #4awg welding wire to 
the radio desk.  It runs 24/7.


I also have a B&K 0-30v, 3A bench supply for those small projects and 
to recharge my MFJ analyzer, etc.


One cannot have too many PS!

two Astron 28v, 20A at my dish
a 30v, 8A variable supply to run 28v relays, etc.
4kV, 1.5A PS for the 8877
MOT repeater PS: 13.8v & 27v for 28v: runs my 300w HF amp and 150w 222-MHz amp
a pile if more PS in the garage and shed

73, Ed - KL7UW

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[Elecraft] Semi-OT [K3]: TPL 2 meter amplifier question

[Lewis Phelps]

I recently picked up a TPL Tempo amplifier from a local SK estate sale. The amp 
is specified as a Class C (FM only) amp; 10 watts in, 110 out.  The power 
amplifier consists of three B40-12 transistors in parallel, with a fourth 
apparently serving as a pre-amp. There are a number of old TPL amp manuals 
available online, but none for this particular model, so I don't have a 
schematic.

The seller told me the amp had been modified by the prior owner to bias the 
power transistors so that it now functions as a Class A amp with 70 watts out. 
I've opened the case and there appear to be some circuit mods, but I can't tell 
whether they do what they are purported to do. 

I have found a one-page spec sheet for the B40-12 transistor, which 
characterizes it as designed for use in Class C amps for mobile FM operation.  

So here's the question:  is anyone on the list sufficiently familiar with the 
TPL Tempo to advise (a) whether it can indeed be modified to serve as a class A 
amp, and (b) what the mods would look like.

thanks, and 73

Lew N6LEW

Lew Phelps N6LEW
Pasadena, CA DM04wd
Elecraft K3-10 
Yaesu FT-7800 
l...@n6lew.us
www.ntlew.us



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Re: [Elecraft] K3 power supply recommendations

[Vic K2VCO]

If it ain't broke ... just open it up, blow out the dust, and tighten all of the screws 
that connect the capacitors to the board. Then make sure the bolts on the output 
connectors are tight, too.

Then settle back and use it for another 25 years.

On 4/16/2013 8:27 AM, Bill wrote:
My RS-35A has been on and in use 24/7 (except during storms and vacations) for well over 
25 years. I plan on replacing it "just because" this summer - with a new one.


Bill W2BLC


--
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco/

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Re: [Elecraft] K3 power supply recommendations

[Keith Heimbold]

I use either my Astron RS70M or my RS35M at my shack in San Diego. Both are 
really great. I got the larger astron for use with a couple larger mobile solid 
state amps and my TS480hx.

I also have a powererx 30 amp power supply and a RS35 (no meter) at my other 
shack in Texas. Both of those power supplies work well also.

Keith
AK6ZZ

Sent from my iPhone please excuse typos

On Apr 16, 2013, at 4:27 AM, "Tom Branton"  wrote:

> Good morning everyone ,
> 
> I think I have found a very nicely maintained and equipped K3 to purchase. 
> Any purchase recommendations as to a well constructed and trouble free power 
> supply?
> 
> Thanks
> 
> Tom
> WD5DFE
> 
> 
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Re: [Elecraft] PR6 Clarification

[Jim Brown]

On 4/15/2013 8:18 PM, Cady, Fred wrote:

,
What I'd like to be able to do is to disable the amp on some bands (e.g. 30 m)


FWIW, I really appreciate being able to run the KPA500 on 30M to give me 
200W output when I'm chasing DX in a pileup, or trying to work someone 
over a very long path.  The KPA is programmed so that 200W is all you 
get, and it only needs something like 7-8 watts drive to get there.


73, Jim K9YC
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Re: [Elecraft] Cancel XG3 morse tx?

[Paul Saffren N6HZ]

Hi Stan, 

I spent a little time investigating adding these features to the XG3
firmware.  It may be possible for me to add the ability to interrupt 'W'
Morse sending with any received serial character or key press.  However
adding the ability to detect when Morse is being sent (i.e. adding another
field to the Info command) would require quite a bit more programming which
I cannot devote to at this time due to existing demands. 

73, 

Paul
 





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Re: [Elecraft] K3 power supply recommendations

[Joe Subich, W4TV]

One of mine is over 30 years old ... it gets opened about one
a year to have the dust blown out, have screws/bolts checked
(filter cap terminals, etc.) and the output voltage gets checked.
Never a bit of trouble ...

My newer unit is perhaps five years old ... it gets the same
treatment also no problems.

73,

   ... Joe, W4TV


On 4/16/2013 11:27 AM, Bill wrote:

My RS-35A has been on and in use 24/7 (except during storms and
vacations) for well over 25 years. I plan on replacing it "just because"
this summer - with a new one.

Bill W2BLC



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Re: [Elecraft] Leaving TP2 connected?

[Don Wilhelm]

John,

That presents no problem at all.  The base K2 manual suggests that you 
leave the probe in TP2 to allow you to adjust the filters at will, but 
it also exposes the RF circuits to 3rd harmonic leakage from the BFO.  
With the K2/10 that does not normally produce spurious responses that 
are objectionable,  But if the KPA100 or an external amplifier is added, 
they can be stronger than allowable by the FCC.


My recommendation is to not leave the probe connected to either TP2 or 
TP1.  It can remain connected to the control board as long as the tip 
does not flop around and cause problems.  Securing the tip as suggested 
by N0SS (SK) is a good addition.


73,
Don W3FPR

On 4/16/2013 11:39 AM, John Wingard wrote:

The counter probe is inside my k2/100 but not connected to TP2. However,
  it is still plugged into the control board. It's just parked along the
left side panel and grounded in a dummy jack in the back corner of the
  rig (as per on old tip by Tom, N0SS). Is there a chance of creating problems 
if left this way? I left it
  in primarily to keep from misplacing it when needed.



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Re: [Elecraft] PR6 Clarification

[iain macdonnell - N6ML]

Hi Fred,

I'm not sure I completely understand your question, but my PR6 is on
all the time (it is not connected to the K3's ACC port), and I just
use RX ANT on 6m to bring it in-line. This is not a problem for me,
since I do not have any other RX ants that I need to feed through the
PR6 for other bands. AFAIK, this is a "supported configuration".

73,

~iain / N6ML


On Tue, Apr 16, 2013 at 7:44 AM, Cady, Fred  wrote:
> Hey, Ian (and others),
> What do you think about having the PR6 powered-up and controlled-on with 
> DIGOUT1 while on another band with RX ANT not enabled? It looks like the PR6 
> input and outputs are floating. Do you think that is a problem for the PR6?
>
> Fred
>
>
> Fred Cady
> fcady at ieee dot org
>
>> -Original Message-
>> From: dse...@dseven.org [mailto:dse...@dseven.org] On Behalf Of iain
>> macdonnell - N6ML
>> Sent: Tuesday, April 16, 2013 7:55 AM
>> To: Jim Miller
>> Cc: Cady, Fred; Elecraft Reflector
>> Subject: Re: [Elecraft] PR6 Clarification
>>
>> On Tue, Apr 16, 2013 at 5:31 AM, Jim Miller  wrote:
>> > It seems like it would be an easy thing to implement in the KPA500.
>> Per
>> > Band Standby.
>>
>> Good idea - why didn't I think of it? Oh, wait, I did :)
>>
>> http://elecraft.365791.n2.nabble.com/KPA500-feature-suggestion-band-
>> bypass-td6247211.html
>>
>> Hasn't transpired so-far, though
>>
>> 73,
>>
>> ~iain / N6ML
>>
>>
>> > On Mon, Apr 15, 2013 at 11:18 PM, Cady, Fred 
>> wrote:
>> >
>> >> Hi Jim,
>> >>
>> >> What I'd like to be able to do is to disable the amp on some bands
>> (e.g.
>> >> 30 m), by asserting  (low) DIGOUT1 (and setting KPA500 INHIB IN to
>> ENABLE)
>> >> but to have the amp enabled for 6m when DIGOUT1 is low to turn on
>> the PR6.
>> >> I'm just lazy, that's all. Plus it's fun to think about!
>> >>
>> >> Cheers,
>> >>
>> >> Fred
>> >>
>> >> ** **
>> >>
>> >> ** **
>> >>
>> >> Fred Cady
>> >> fcady at ieee dot org 
>> >>
>> >> *From:* jtmille...@gmail.com [mailto:jtmille...@gmail.com] *On
>> Behalf Of *Jim
>> >> Miller
>> >> *Sent:* Monday, April 15, 2013 8:52 PM
>> >> *To:* Cady, Fred
>> >>
>> >> *Cc:* Elecraft Reflector
>> >> *Subject:* Re: [Elecraft] PR6 Clarification
>> >>
>> >> ** **
>> >>
>> >> I'm not getting the importance of a Pin 11 solution. I just disable
>> the
>> >> KPA500 sensing of that pin by the menu selection. I don't see the
>> need for
>> >> it.
>> >>
>> >>  
>> >>
>> >> I'm definitely running the KPA500 on 6m.
>> >>
>> >>  
>> >>
>> >> If for some strange reason Pin 11 is asserted it just causes the
>> KPA500 to
>> >> be inhibited, not turned on, which is a failsafe direction.
>> >>
>> >>  
>> >>
>> >> 73
>> >>
>> >>  
>> >>
>> >> jim ab3cv
>> >>
>> >> ** **
>> >>
>> >> On Mon, Apr 15, 2013 at 9:50 PM, Cady, Fred 
>> wrote:
>> >> 
>> >>
>> >> Ahh, looking back at my notes I see the other solution would be to
>> make
>> >> the KPA500 INHIBIT IN be per/band. But you would still have to take
>> care of
>> >> not turning on the PR6 when DIGOUT1 is low with some external logic
>> if you
>> >> cared about that.
>> >>
>> >> KE7X
>> >>
>> >>
>> >> Fred Cady
>> >> fcady at ieee dot org
>> >>
>> >> > -Original Message-
>> >> > From: elecraft-boun...@mailman.qth.net [mailto:elecraft-
>> >>
>> >> > boun...@mailman.qth.net] On Behalf Of Cady, Fred
>> >> > Sent: Monday, April 15, 2013 7:42 PM
>> >> > To: 'Elecraft Reflector'
>> >> > Subject: Re: [Elecraft] PR6 Clarification
>> >> >
>> >> > K4RX's inhibit line inhibiter for pin 11 is the same idea as the
>> >> > keyline inhibiter for pin 10. However, it is not really needed
>> because
>> >> > one can set the KPA500 INHIB IN menu to DISABLE so a low on pin 11
>> will
>> >> > not inhibit the amp accomplishing the same thing as pulling pin 11
>> from
>> >> > the connector. Of course pulling the pin is a fail-safe solution.
>> What
>> >> > is really needed is some logic that blocks pin 11 from the KPA for
>> 6m
>> >> > (assuming you want the amp on for 6) and passes it for the other
>> bands.
>> >> > That way you could inhibit the amp on, say, 30 m or other bands
>> where
>> >> > there might not be a good match. I worked up a circuit to do this
>> once
>> >> > upon a time and should dust it off again.
>> >> > 73,
>> >> > Fred
>> >> >
>> >> >
>> >> > Fred Cady
>> >> > fcady at ieee dot org
>> >> > "The Elecraft K3: Design, Configuration, and Operation Second
>> Edition"
>> >> >
>> >> > BTW, www.Lulu.com has a 20% discount (APRILBOOKS13) good this
>> month and
>> >> > 15% off (POURING) until April 19th.
>> >> >
>> >> > > -Original Message-
>> >> > > From: elecraft-boun...@mailman.qth.net [mailto:elecraft-
>> >> > > boun...@mailman.qth.net] On Behalf Of Jim Miller
>> >> > > Sent: Monday, April 15, 2013 7:25 PM
>> >> > > To: Terry Posey
>> >> > > Cc: Elecraft Reflector
>> >> > > Subject: Re: [Elecraft] PR6 Clarification
>> >> > >
>> >> > > I believe the Key line interrupter interrupts pin

Re: [Elecraft] K1

[Don Wilhelm]

Tomy,

My first guess is that the crystal for 15 meters (on the 4 band board) 
has stopped oscillating or has reduced output.
If you have a 'scope or an RF Probe, you can check to see if there is RF 
at P1 on the 4 band board pin 4.  Select 15 meters when conducting the test.
The 15 meter crystal is located at X1 and should be 29.000 MHz.  The 
Elecraft part number is E660005
This must be a fundamental mode crystal, many crystals in that frequency 
range are 3rd overtone and will not work in this application.


73,
Don W3FPR

On 4/16/2013 11:18 AM, Tomy wrote:

I just acquired a K1 with the K1-4 filter board in it.
It transmits fine on 40, 30, 20. But will not transmit on 15 meters.
Any ideas on where to start.




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Re: [Elecraft] Leaving TP2 connected?

[John Wingard]

The counter probe is inside my k2/100 but not connected to TP2. However,
 it is still plugged into the control board. It's just parked along the 
left side panel and grounded in a dummy jack in the back corner of the
 rig (as per on old tip by Tom, N0SS). Is there a chance of creating problems 
if left this way? I left it
 in primarily to keep from misplacing it when needed.

73 de WB4GLJ

--- On Tue, 4/16/13, Don Wilhelm  wrote:

From: Don Wilhelm 
Subject: Re: [Elecraft] Leaving TP2 connected?
To: "Eddy" 
Cc: elecraft@mailman.qth.net
Date: Tuesday, April 16, 2013, 8:36 AM

Ed,

If you are having trouble getting the K2 filters aligned, you might want to 
refer to the information in the K2 Dial Calibration article on my website 
www.w3fpr.com.  Use Spectrogram (or another audio spectrum analyzer) to be able 
to see the filter passband.
You can download Spectrogram from the home page on my website.

Leaving the counter probe in the K2 should only be done with an unamplified 
K2/10.  If you have the KPA100 or use an external amplifier, remove the probe.

73,
Don W3FPR


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Re: [Elecraft] KX3 as an antenna analyser

[Matthew Zilmer]

Turning the KX3 to the purpose of antenna analyzer can be done easily using a 
host program on a PC or MAC.  It will only be able to give you SWR, nothing 
more than that.  See the KX3 Programmer's Manual for details.

If your station is so equipped, the LP-100A can be used as a vector antenna 
analyzer and can plot Smith charts, R+jX, etc.  This is also run from a PC or 
MAC, and the results are logged on the computer.  This approach would work with 
any transceiver supported by Larry's LP-Plot program.  See www.telepostinc.com 
for details.

It's possible that there is a host program for the W2 (Elecraft) wattmeter as 
well, but I'm not aware of it.  I'm pretty certain the W2 isn't a vector 
wattmeter like the LP-100 and LP-100A.  Please correct me if I'm wrong about 
this.

73,
Matt Zilmer, W6NIA
Semper Gumby



-Original Message-
From: elecraft-boun...@mailman.qth.net 
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Rijk van Harn
Sent: Tuesday, April 16, 2013 8:25 AM
To: Lewis Hunter
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KX3 as an antenna analyser

Why switch to fm?

Just hit and hold the tune button for a cw carrier.
Disable the atu for vswr reading.
As we know swr reading requires 1w or more.  Out of band transmitting with this 
power setting violate you licence.

If my antenna is out of band I use a cheap swr analyser from vk.

For the posibility we have to wait for the answer from elecraft. But I think 
this feature wil not be implemented in the future.
For legal and technical reasons.

Rijk
PE1PTJ
 Op 16 apr. 2013 14:18 schreef "Lewis Hunter"  het
volgende:

> When setting up a wire I often switch my KX3 to FM mode, hit the TX 
> button, turn the VFO while looking at the meter to find the lowest SWR 
> so I can adjust the wire. This is very handy indeed. However sometimes 
> the antenna is resonant outside the permitted transmit frequencies. So 
> I ask is there any possible way to make the KX3 function as an antenna 
> analyser so I can tune the antenna out of band. Or future plan to do 
> so through firmware updates?
>
> Lewis
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Re: [Elecraft] K3 power supply recommendations

[Bill]

My RS-35A has been on and in use 24/7 (except during storms and 
vacations) for well over 25 years. I plan on replacing it "just because" 
this summer - with a new one.


Bill W2BLC



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Re: [Elecraft] KX3 as an antenna analyser

[Rijk van Harn]

Why switch to fm?

Just hit and hold the tune button for a cw carrier.
Disable the atu for vswr reading.
As we know swr reading requires 1w or more.  Out of band transmitting with
this power setting violate you licence.

If my antenna is out of band I use a cheap swr analyser from vk.

For the posibility we have to wait for the answer from elecraft. But I
think this feature wil not be implemented in the future.
For legal and technical reasons.

Rijk
PE1PTJ
 Op 16 apr. 2013 14:18 schreef "Lewis Hunter"  het
volgende:

> When setting up a wire I often switch my KX3 to FM mode, hit the TX button,
> turn the VFO while looking at the meter to find the lowest SWR so I can
> adjust the wire. This is very handy indeed. However sometimes the antenna
> is resonant outside the permitted transmit frequencies. So I ask is there
> any possible way to make the KX3 function as an antenna analyser so I can
> tune the antenna out of band. Or future plan to do so through firmware
> updates?
>
> Lewis
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Re: [Elecraft] K3 power supply recommendations

[wa5pok]

As of late I have been using a Powerwerx SS-30DV and I have been very 
pleased so far.

http://www.powerwerx.com/power-supplies/powerwerx-30-amp-desktop-switching-power-supply-powerpoles.html

73, Mike WA5POK

--
From: "Tom Branton" 
Sent: Tuesday, April 16, 2013 7:26 AM
To: "Tom Branton" 
Cc: 
Subject: [Elecraft] K3 power supply recommendations


Good morning everyone ,

I think I have found a very nicely maintained and equipped K3 to purchase. 
Any purchase recommendations as to a well constructed and trouble free 
power supply?


Thanks

Tom
WD5DFE


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Re: [Elecraft] K3 power supply recommendations

[tnnyswy]

Now would be a good time to pull the cover off.

73 Milverton





>
> From: Richard Fjeld 
>To: elecraft posting ; Mike Reublin  
>Sent: Tuesday, April 16, 2013 9:37 AM
>Subject: Re: [Elecraft] K3 power supply recommendations
> 
>
>I haven't pulled the cover on my RS-35M yet.  Does it have adequate clearance 
>to get to the pot, or did you have to improvise?
>
>Rich, n0ce
>
>  - Original Message - 
>  From: Mike Reublin 
>  To: Tom Branton 
>  Cc: elecraft@mailman.qth.net 
>  Sent: Tuesday, April 16, 2013 9:05 AM
>  Subject: Re: [Elecraft] K3 power supply recommendations
>
>
>  I've used an Astron RS-35M very happily for years. Had to turn it up a tad 
>for the K3. 
>
>  Tip: The voltage adjustment is on the under side of the board..
>
>  73, Mike NF4L
>
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[Elecraft] K1

[Tomy]

I just acquired a K1 with the K1-4 filter board in it.
It transmits fine on 40, 30, 20. But will not transmit on 15 meters.
Any ideas on where to start.

73! Tomy Ivan KF7GC
AZ STM NM AZ Section
NM 
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Re: [Elecraft] K3 power supply recommendations

[Joe Subich, W4TV]

Depends on the version ... some pots are mounted vertically,
some flat, some have holes in the board to adjust through, etc.

My preference is the RS-35A ... the non-metered version.  I find the
metering not that accurate.  Since the supplies are mounted below
the bench and I usually get the DVM when setting them up, I don't
see a justification for the added expense .

73,

   ... Joe, W4TV


On 4/16/2013 10:37 AM, Richard Fjeld wrote:

I haven't pulled the cover on my RS-35M yet.  Does it have adequate clearance 
to get to the pot, or did you have to improvise?

Rich, n0ce

   - Original Message -
   From: Mike Reublin
   To: Tom Branton
   Cc: elecraft@mailman.qth.net
   Sent: Tuesday, April 16, 2013 9:05 AM
   Subject: Re: [Elecraft] K3 power supply recommendations


   I've used an Astron RS-35M very happily for years. Had to turn it up a tad 
for the K3.

   Tip: The voltage adjustment is on the under side of the board..

   73, Mike NF4L

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Re: [Elecraft] PR6 Clarification

[Cady, Fred]

Hey, Ian (and others),
What do you think about having the PR6 powered-up and controlled-on with 
DIGOUT1 while on another band with RX ANT not enabled? It looks like the PR6 
input and outputs are floating. Do you think that is a problem for the PR6?

Fred


Fred Cady
fcady at ieee dot org

> -Original Message-
> From: dse...@dseven.org [mailto:dse...@dseven.org] On Behalf Of iain
> macdonnell - N6ML
> Sent: Tuesday, April 16, 2013 7:55 AM
> To: Jim Miller
> Cc: Cady, Fred; Elecraft Reflector
> Subject: Re: [Elecraft] PR6 Clarification
>
> On Tue, Apr 16, 2013 at 5:31 AM, Jim Miller  wrote:
> > It seems like it would be an easy thing to implement in the KPA500.
> Per
> > Band Standby.
>
> Good idea - why didn't I think of it? Oh, wait, I did :)
>
> http://elecraft.365791.n2.nabble.com/KPA500-feature-suggestion-band-
> bypass-td6247211.html
>
> Hasn't transpired so-far, though
>
> 73,
>
> ~iain / N6ML
>
>
> > On Mon, Apr 15, 2013 at 11:18 PM, Cady, Fred 
> wrote:
> >
> >> Hi Jim,
> >>
> >> What I'd like to be able to do is to disable the amp on some bands
> (e.g.
> >> 30 m), by asserting  (low) DIGOUT1 (and setting KPA500 INHIB IN to
> ENABLE)
> >> but to have the amp enabled for 6m when DIGOUT1 is low to turn on
> the PR6.
> >> I'm just lazy, that's all. Plus it's fun to think about!
> >>
> >> Cheers,
> >>
> >> Fred
> >>
> >> ** **
> >>
> >> ** **
> >>
> >> Fred Cady
> >> fcady at ieee dot org 
> >>
> >> *From:* jtmille...@gmail.com [mailto:jtmille...@gmail.com] *On
> Behalf Of *Jim
> >> Miller
> >> *Sent:* Monday, April 15, 2013 8:52 PM
> >> *To:* Cady, Fred
> >>
> >> *Cc:* Elecraft Reflector
> >> *Subject:* Re: [Elecraft] PR6 Clarification
> >>
> >> ** **
> >>
> >> I'm not getting the importance of a Pin 11 solution. I just disable
> the
> >> KPA500 sensing of that pin by the menu selection. I don't see the
> need for
> >> it.
> >>
> >>  
> >>
> >> I'm definitely running the KPA500 on 6m.
> >>
> >>  
> >>
> >> If for some strange reason Pin 11 is asserted it just causes the
> KPA500 to
> >> be inhibited, not turned on, which is a failsafe direction.
> >>
> >>  
> >>
> >> 73
> >>
> >>  
> >>
> >> jim ab3cv
> >>
> >> ** **
> >>
> >> On Mon, Apr 15, 2013 at 9:50 PM, Cady, Fred 
> wrote:
> >> 
> >>
> >> Ahh, looking back at my notes I see the other solution would be to
> make
> >> the KPA500 INHIBIT IN be per/band. But you would still have to take
> care of
> >> not turning on the PR6 when DIGOUT1 is low with some external logic
> if you
> >> cared about that.
> >>
> >> KE7X
> >>
> >>
> >> Fred Cady
> >> fcady at ieee dot org
> >>
> >> > -Original Message-
> >> > From: elecraft-boun...@mailman.qth.net [mailto:elecraft-
> >>
> >> > boun...@mailman.qth.net] On Behalf Of Cady, Fred
> >> > Sent: Monday, April 15, 2013 7:42 PM
> >> > To: 'Elecraft Reflector'
> >> > Subject: Re: [Elecraft] PR6 Clarification
> >> >
> >> > K4RX's inhibit line inhibiter for pin 11 is the same idea as the
> >> > keyline inhibiter for pin 10. However, it is not really needed
> because
> >> > one can set the KPA500 INHIB IN menu to DISABLE so a low on pin 11
> will
> >> > not inhibit the amp accomplishing the same thing as pulling pin 11
> from
> >> > the connector. Of course pulling the pin is a fail-safe solution.
> What
> >> > is really needed is some logic that blocks pin 11 from the KPA for
> 6m
> >> > (assuming you want the amp on for 6) and passes it for the other
> bands.
> >> > That way you could inhibit the amp on, say, 30 m or other bands
> where
> >> > there might not be a good match. I worked up a circuit to do this
> once
> >> > upon a time and should dust it off again.
> >> > 73,
> >> > Fred
> >> >
> >> >
> >> > Fred Cady
> >> > fcady at ieee dot org
> >> > "The Elecraft K3: Design, Configuration, and Operation Second
> Edition"
> >> >
> >> > BTW, www.Lulu.com has a 20% discount (APRILBOOKS13) good this
> month and
> >> > 15% off (POURING) until April 19th.
> >> >
> >> > > -Original Message-
> >> > > From: elecraft-boun...@mailman.qth.net [mailto:elecraft-
> >> > > boun...@mailman.qth.net] On Behalf Of Jim Miller
> >> > > Sent: Monday, April 15, 2013 7:25 PM
> >> > > To: Terry Posey
> >> > > Cc: Elecraft Reflector
> >> > > Subject: Re: [Elecraft] PR6 Clarification
> >> > >
> >> > > I believe the Key line interrupter interrupts pin 10 rather than
> pin
> >> > 11
> >> > > after reviewing the K3 and KPA manual. I don't use the Pin 11
> option
> >> > on
> >> > > the
> >> > > KPA (it's disabled) rather use the keyline interrupter and RCA
> jack
> >> > > cabling
> >> > > to interface all the keying interruption which includes my
> antenna
> >> > > switch.
> >> > >
> >> > > Thanks for your concern and don't hesitate to correct me if I've
> made
> >> > > an
> >> > > incorrect assessment.
> >> > >
> >> > > 73
> >> > >
> >> > > jim ab3cv
> >> > >
> >> > >
> >> > > On Mon, Apr 15, 2013 at 9:06 PM, Terry Posey
> 
> >> > > wrote

Re: [Elecraft] K3 power supply recommendations

[Richard Fjeld]

I haven't pulled the cover on my RS-35M yet.  Does it have adequate clearance 
to get to the pot, or did you have to improvise?

Rich, n0ce

  - Original Message - 
  From: Mike Reublin 
  To: Tom Branton 
  Cc: elecraft@mailman.qth.net 
  Sent: Tuesday, April 16, 2013 9:05 AM
  Subject: Re: [Elecraft] K3 power supply recommendations


  I've used an Astron RS-35M very happily for years. Had to turn it up a tad 
for the K3. 

  Tip: The voltage adjustment is on the under side of the board..

  73, Mike NF4L

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Re: [Elecraft] (KX3) Voltage display (solved)

[Holger Schurig]

I tx you a "thank you" !  :-)



2013/4/16 Bruce Beford 

> Rich, AC7MA explained this quite well on the KX3 Yahoo group just last
> week:
>
>
>
> The batteries and external supply are connected at the '+' end. The
> external
> supply '-' is connected to KX3 ground, but not battery '-'.
>
> With an external supply connected that's higher than the battery voltage,
> the battery '-' will be a positive voltage with respect to ground, so
> battery voltage is the difference between the measurements of the two
> terminals. If no batteries are installed, the battery '-'
>
> terminal is at ground potential, so the display for PS and BT will be the
> same. When the KX3 is running from batteries, the reverse isolation diode
> for the batteries puts the battery '-' slightly below ground, which will be
> read as 0V, so PS and BT readout will also be the same in that case.
>
>
>
> 73,
>
> Rich AC7MA
>
>
>
> > Now just the question arises why the BAT display shortly raises to the
> > input voltage if you connect the power? ...
>
> > Holger, DH3HS
>
>
>
>
>
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Re: [Elecraft] K3 power supply recommendations

[Mike Reublin]

I've used an Astron RS-35M very happily for years. Had to turn it up a tad for 
the K3. 

Tip: The voltage adjustment is on the under side of the board..

73, Mike NF4L

On Apr 16, 2013, at 8:03 AM, Tom Branton  wrote:

> The K3 in question is a K3/100.  Thanks,
> 
> Tom
> 
> 
> 
> On Apr 16, 2013, at 6:26 AM, "Tom Branton"  wrote:
> 
>> Good morning everyone ,
>> 
>> I think I have found a very nicely maintained and equipped K3 to purchase. 
>> Any purchase recommendations as to a well constructed and trouble free power 
>> supply?
>> 
>> Thanks
>> 
>> Tom
>> WD5DFE
>> 
>> 
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Re: [Elecraft] PR6 Clarification

[iain macdonnell - N6ML]

On Tue, Apr 16, 2013 at 5:31 AM, Jim Miller  wrote:
> It seems like it would be an easy thing to implement in the KPA500. Per
> Band Standby.

Good idea - why didn't I think of it? Oh, wait, I did :)

http://elecraft.365791.n2.nabble.com/KPA500-feature-suggestion-band-bypass-td6247211.html

Hasn't transpired so-far, though

73,

~iain / N6ML


> On Mon, Apr 15, 2013 at 11:18 PM, Cady, Fred  wrote:
>
>> Hi Jim,
>>
>> What I’d like to be able to do is to disable the amp on some bands (e.g.
>> 30 m), by asserting  (low) DIGOUT1 (and setting KPA500 INHIB IN to ENABLE)
>> but to have the amp enabled for 6m when DIGOUT1 is low to turn on the PR6.
>> I’m just lazy, that’s all. Plus it’s fun to think about!
>>
>> Cheers,
>>
>> Fred
>>
>> ** **
>>
>> ** **
>>
>> Fred Cady
>> fcady at ieee dot org 
>>
>> *From:* jtmille...@gmail.com [mailto:jtmille...@gmail.com] *On Behalf Of *Jim
>> Miller
>> *Sent:* Monday, April 15, 2013 8:52 PM
>> *To:* Cady, Fred
>>
>> *Cc:* Elecraft Reflector
>> *Subject:* Re: [Elecraft] PR6 Clarification
>>
>> ** **
>>
>> I'm not getting the importance of a Pin 11 solution. I just disable the
>> KPA500 sensing of that pin by the menu selection. I don't see the need for
>> it.
>>
>>  
>>
>> I'm definitely running the KPA500 on 6m.
>>
>>  
>>
>> If for some strange reason Pin 11 is asserted it just causes the KPA500 to
>> be inhibited, not turned on, which is a failsafe direction.
>>
>>  
>>
>> 73
>>
>>  
>>
>> jim ab3cv
>>
>> ** **
>>
>> On Mon, Apr 15, 2013 at 9:50 PM, Cady, Fred  wrote:
>> 
>>
>> Ahh, looking back at my notes I see the other solution would be to make
>> the KPA500 INHIBIT IN be per/band. But you would still have to take care of
>> not turning on the PR6 when DIGOUT1 is low with some external logic if you
>> cared about that.
>>
>> KE7X
>>
>>
>> Fred Cady
>> fcady at ieee dot org
>>
>> > -Original Message-
>> > From: elecraft-boun...@mailman.qth.net [mailto:elecraft-
>>
>> > boun...@mailman.qth.net] On Behalf Of Cady, Fred
>> > Sent: Monday, April 15, 2013 7:42 PM
>> > To: 'Elecraft Reflector'
>> > Subject: Re: [Elecraft] PR6 Clarification
>> >
>> > K4RX's inhibit line inhibiter for pin 11 is the same idea as the
>> > keyline inhibiter for pin 10. However, it is not really needed because
>> > one can set the KPA500 INHIB IN menu to DISABLE so a low on pin 11 will
>> > not inhibit the amp accomplishing the same thing as pulling pin 11 from
>> > the connector. Of course pulling the pin is a fail-safe solution. What
>> > is really needed is some logic that blocks pin 11 from the KPA for 6m
>> > (assuming you want the amp on for 6) and passes it for the other bands.
>> > That way you could inhibit the amp on, say, 30 m or other bands where
>> > there might not be a good match. I worked up a circuit to do this once
>> > upon a time and should dust it off again.
>> > 73,
>> > Fred
>> >
>> >
>> > Fred Cady
>> > fcady at ieee dot org
>> > "The Elecraft K3: Design, Configuration, and Operation Second Edition"
>> >
>> > BTW, www.Lulu.com has a 20% discount (APRILBOOKS13) good this month and
>> > 15% off (POURING) until April 19th.
>> >
>> > > -Original Message-
>> > > From: elecraft-boun...@mailman.qth.net [mailto:elecraft-
>> > > boun...@mailman.qth.net] On Behalf Of Jim Miller
>> > > Sent: Monday, April 15, 2013 7:25 PM
>> > > To: Terry Posey
>> > > Cc: Elecraft Reflector
>> > > Subject: Re: [Elecraft] PR6 Clarification
>> > >
>> > > I believe the Key line interrupter interrupts pin 10 rather than pin
>> > 11
>> > > after reviewing the K3 and KPA manual. I don't use the Pin 11 option
>> > on
>> > > the
>> > > KPA (it's disabled) rather use the keyline interrupter and RCA jack
>> > > cabling
>> > > to interface all the keying interruption which includes my antenna
>> > > switch.
>> > >
>> > > Thanks for your concern and don't hesitate to correct me if I've made
>> > > an
>> > > incorrect assessment.
>> > >
>> > > 73
>> > >
>> > > jim ab3cv
>> > >
>> > >
>> > > On Mon, Apr 15, 2013 at 9:06 PM, Terry Posey 
>> > > wrote:
>> > >
>> > > > Hi Jim -
>> > > >
>> > > > You are well on your way to 6m success with the
>> > K3/KPA500/KAT500/PR6
>> > > line
>> > > > up.  However, there is one more issue you will need to address in
>> > > your
>> > > > cabling system.  The K3's Digout1 signal is asserted on the PIN 11
>> > of
>> > > the
>> > > > AUX cable.  That presents a conflict with the KPA500 INHIBIT on PIN
>> > > 11 on
>> > > > the cable bus between the K3, PR6, KPA500, and KAT500.  PIN 11
>> > needs
>> > > to be
>> > > > "interrupted" before passing the Digout1 signal onto the KPA500 and
>> > > KAT500,
>> > > > yet still sending the PIN 11 Digout1 signal to the PR6.
>> > > >
>> > > > I purchased a HD15 male/female "port saver" adapter from the Web
>> > ($5)
>> > > and
>> > > > removed PIN 11 with pliers.  Install the "Y" cable at the K3 ACC
>> > > port, then
>> > > > connect the PR6 to one si

Re: [Elecraft] K3 power supply recommendations

[iain macdonnell - N6ML]

On Tue, Apr 16, 2013 at 4:26 AM, Tom Branton  wrote:
> I think I have found a very nicely maintained and equipped K3 to purchase. 
> Any purchase recommendations as to a well constructed and trouble free power 
> supply?

This is a recurring topic - search for "k3 power supply" at
http://elecraft.365791.n2.nabble.com/ for ample regurgitation ;)

73,

~iain / N6ML
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Re: [Elecraft] (KX3) Voltage display (solved)

[Bruce Beford]

Rich, AC7MA explained this quite well on the KX3 Yahoo group just last week:

 

The batteries and external supply are connected at the '+' end. The external
supply '-' is connected to KX3 ground, but not battery '-'. 

With an external supply connected that's higher than the battery voltage,
the battery '-' will be a positive voltage with respect to ground, so
battery voltage is the difference between the measurements of the two
terminals. If no batteries are installed, the battery '-' 

terminal is at ground potential, so the display for PS and BT will be the
same. When the KX3 is running from batteries, the reverse isolation diode
for the batteries puts the battery '-' slightly below ground, which will be
read as 0V, so PS and BT readout will also be the same in that case.

 

73,

Rich AC7MA

 

> Now just the question arises why the BAT display shortly raises to the
> input voltage if you connect the power? ...
 
> Holger, DH3HS

 

 

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Re: [Elecraft] Leaving TP2 connected?

[Don Wilhelm]

Ed,

If you are having trouble getting the K2 filters aligned, you might want 
to refer to the information in the K2 Dial Calibration article on my 
website www.w3fpr.com.  Use Spectrogram (or another audio spectrum 
analyzer) to be able to see the filter passband.

You can download Spectrogram from the home page on my website.

Leaving the counter probe in the K2 should only be done with an 
unamplified K2/10.  If you have the KPA100 or use an external amplifier, 
remove the probe.


73,
Don W3FPR

On 4/15/2013 11:53 PM, Eddy wrote:

Quick question regarding my 3000+ K2, I'm "struggling" to get the filters just 
right so can I leave TP2 connected all the time? So, I haven't noticed any adverse 
affects.

This way I won't have to take the cover to try and new filter setting.




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Re: [Elecraft] K3 power supply recommendations

[Fred Smith]

Astron RS-35M supply for a base unit, still room for some headroom for extra
items.


73,
Fred/N0AZZ
K3 Ser #'s 6730/5299--KX3 # 2573--K2/100--KAT100
P3/SVGA--KPA500--KAT500--W2




-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Tom Branton
Sent: Tuesday, April 16, 2013 6:27 AM
To: Tom Branton
Cc: elecraft@mailman.qth.net
Subject: [Elecraft] K3 power supply recommendations

Good morning everyone ,

I think I have found a very nicely maintained and equipped K3 to purchase.
Any purchase recommendations as to a well constructed and trouble free power
supply?

Thanks

Tom
WD5DFE


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-
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Checked by AVG - www.avg.com
Version: 2013.0.2904 / Virus Database: 3162/6246 - Release Date: 04/15/13

-
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2013.0.2904 / Virus Database: 3162/6246 - Release Date: 04/15/13

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Re: [Elecraft] (KX3) Voltage display (solved)

[Holger Schurig]

Now just the question arises why the BAT display shortly raises to the
input voltage if you connect the power? ...

Holger, DH3HS



2013/4/16 Fred Jensen 

> On 4/15/2013 4:20 PM, Rob May wrote:
>
>> Ok, I feel like an idiot.  Operator error.  Who knew there was a
>> display for BAT and P/S?  I just turned the knob to the left to read
>> the P/S instead of the internal battery.  I hang my head in shame!
>>
>
> No shame!  Back in the "olden days," my SX-28 had perhaps a dozen or so
> knobs and switches.  They were all on the front panel and I could see them.
>  Menus hadn't been invented yet.
>
> Despite being right in front of me, I often wondered why the band noise
> sounded strange, and finally realized I'd left the crystal filter phasing
> control in an unnatural position.  Teenager and already having memory
> issues. :-))
>
> I admire the design of my E-radios [KX1, K2, K3] and accessories [P3,
> KPA500, KAT500].  Everything I need while actually operating them is on the
> front panel.  The SX-28 syndrome still applies, but I can see all of them.
>  Once I got things on the K3 set up, I rarely hit the menus. Likewise with
> my K2.
>
> Contrast to my IC-2300H in the truck where practically everything of value
> is buried in a menu I forget how to find, or what the choices mean when I
> do find them.
>
> 73,
>
> Fred K6DGW
> - Northern California Contest Club
> - CU in the 2013 Cal QSO Party 5-6 Oct 2013
> - www.cqp.org
>
>
> __**__**__
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Re: [Elecraft] PR6 Clarification

[Jim Miller]

It seems like it would be an easy thing to implement in the KPA500. Per
Band Standby.

73

jim ab3cv


On Mon, Apr 15, 2013 at 11:18 PM, Cady, Fred  wrote:

> Hi Jim,
>
> What I’d like to be able to do is to disable the amp on some bands (e.g.
> 30 m), by asserting  (low) DIGOUT1 (and setting KPA500 INHIB IN to ENABLE)
> but to have the amp enabled for 6m when DIGOUT1 is low to turn on the PR6.
> I’m just lazy, that’s all. Plus it’s fun to think about!
>
> Cheers,
>
> Fred
>
> ** **
>
> ** **
>
> Fred Cady
> fcady at ieee dot org 
>
> *From:* jtmille...@gmail.com [mailto:jtmille...@gmail.com] *On Behalf Of *Jim
> Miller
> *Sent:* Monday, April 15, 2013 8:52 PM
> *To:* Cady, Fred
>
> *Cc:* Elecraft Reflector
> *Subject:* Re: [Elecraft] PR6 Clarification
>
> ** **
>
> I'm not getting the importance of a Pin 11 solution. I just disable the
> KPA500 sensing of that pin by the menu selection. I don't see the need for
> it.
>
>  
>
> I'm definitely running the KPA500 on 6m.
>
>  
>
> If for some strange reason Pin 11 is asserted it just causes the KPA500 to
> be inhibited, not turned on, which is a failsafe direction.
>
>  
>
> 73
>
>  
>
> jim ab3cv
>
> ** **
>
> On Mon, Apr 15, 2013 at 9:50 PM, Cady, Fred  wrote:
> 
>
> Ahh, looking back at my notes I see the other solution would be to make
> the KPA500 INHIBIT IN be per/band. But you would still have to take care of
> not turning on the PR6 when DIGOUT1 is low with some external logic if you
> cared about that.
>
> KE7X
>
>
> Fred Cady
> fcady at ieee dot org
>
> > -Original Message-
> > From: elecraft-boun...@mailman.qth.net [mailto:elecraft-
>
> > boun...@mailman.qth.net] On Behalf Of Cady, Fred
> > Sent: Monday, April 15, 2013 7:42 PM
> > To: 'Elecraft Reflector'
> > Subject: Re: [Elecraft] PR6 Clarification
> >
> > K4RX's inhibit line inhibiter for pin 11 is the same idea as the
> > keyline inhibiter for pin 10. However, it is not really needed because
> > one can set the KPA500 INHIB IN menu to DISABLE so a low on pin 11 will
> > not inhibit the amp accomplishing the same thing as pulling pin 11 from
> > the connector. Of course pulling the pin is a fail-safe solution. What
> > is really needed is some logic that blocks pin 11 from the KPA for 6m
> > (assuming you want the amp on for 6) and passes it for the other bands.
> > That way you could inhibit the amp on, say, 30 m or other bands where
> > there might not be a good match. I worked up a circuit to do this once
> > upon a time and should dust it off again.
> > 73,
> > Fred
> >
> >
> > Fred Cady
> > fcady at ieee dot org
> > "The Elecraft K3: Design, Configuration, and Operation Second Edition"
> >
> > BTW, www.Lulu.com has a 20% discount (APRILBOOKS13) good this month and
> > 15% off (POURING) until April 19th.
> >
> > > -Original Message-
> > > From: elecraft-boun...@mailman.qth.net [mailto:elecraft-
> > > boun...@mailman.qth.net] On Behalf Of Jim Miller
> > > Sent: Monday, April 15, 2013 7:25 PM
> > > To: Terry Posey
> > > Cc: Elecraft Reflector
> > > Subject: Re: [Elecraft] PR6 Clarification
> > >
> > > I believe the Key line interrupter interrupts pin 10 rather than pin
> > 11
> > > after reviewing the K3 and KPA manual. I don't use the Pin 11 option
> > on
> > > the
> > > KPA (it's disabled) rather use the keyline interrupter and RCA jack
> > > cabling
> > > to interface all the keying interruption which includes my antenna
> > > switch.
> > >
> > > Thanks for your concern and don't hesitate to correct me if I've made
> > > an
> > > incorrect assessment.
> > >
> > > 73
> > >
> > > jim ab3cv
> > >
> > >
> > > On Mon, Apr 15, 2013 at 9:06 PM, Terry Posey 
> > > wrote:
> > >
> > > > Hi Jim -
> > > >
> > > > You are well on your way to 6m success with the
> > K3/KPA500/KAT500/PR6
> > > line
> > > > up.  However, there is one more issue you will need to address in
> > > your
> > > > cabling system.  The K3's Digout1 signal is asserted on the PIN 11
> > of
> > > the
> > > > AUX cable.  That presents a conflict with the KPA500 INHIBIT on PIN
> > > 11 on
> > > > the cable bus between the K3, PR6, KPA500, and KAT500.  PIN 11
> > needs
> > > to be
> > > > "interrupted" before passing the Digout1 signal onto the KPA500 and
> > > KAT500,
> > > > yet still sending the PIN 11 Digout1 signal to the PR6.
> > > >
> > > > I purchased a HD15 male/female "port saver" adapter from the Web
> > ($5)
> > > and
> > > > removed PIN 11 with pliers.  Install the "Y" cable at the K3 ACC
> > > port, then
> > > > connect the PR6 to one side of the "Y" cable.  Install the PIN 11
> > > > interrupter "port saver" adapter on the other side of the "Y" cable
> > > and
> > > > attach the HD15 cable connections to the KPA500 and the KAT500.
> > > >
> > > > I hope this helps.
> > > >
> > > > 73,
> > > > Terry K4RX
> > > >
> > > >
> > > > I'm just getting going on 6m with my K3/KPA500/KAT500. I'm getting
> > > ready to
> > > > order a M2 6M5XH

Re: [Elecraft] K2 60m Kit & N0SS keyer

[Don Wilhelm]

Chris,

Since they both fit into the same space, only one can be present in the K2.
BUT - the K60XV has a low power KEYOUT signal available at pin 2 of J2.  
As long as your amp keying requirements do not exceed the current and 
voltage that a 2N7000 drain can handle, you may use that to key your amp.


For my K2, I added an RCA jack near the key jack and wired the keying 
output to that jack.


73,
W3FPR

On 4/16/2013 3:30 AM, Chris Meagher wrote:

I bought a 60m add-on kit for my K2, but on reading the instructions, I
find it is incompatible with the N0SS amp keyer that I have fitted, in that
they both use the same socket. Has anyone found a way to have both
installed? Reply off the reflector OK, to acdmeag...@gmail.com. From Chris
VK2ACD  K2-3666 K3-0685 P3



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[Elecraft] KX3 as an antenna analyser

[Lewis Hunter]

When setting up a wire I often switch my KX3 to FM mode, hit the TX button,
turn the VFO while looking at the meter to find the lowest SWR so I can
adjust the wire. This is very handy indeed. However sometimes the antenna
is resonant outside the permitted transmit frequencies. So I ask is there
any possible way to make the KX3 function as an antenna analyser so I can
tune the antenna out of band. Or future plan to do so through firmware
updates?

Lewis
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Re: [Elecraft] K3 power supply recommendations

[D Joyce]

GM Tom:  I've found the Astron RS-35M to work just fine except that the 
light in the ampmeter went out and I would have to replace the complete 
meter to resolve the problem - so I just ignore that meter.  Otherwise it 
just keeps on working and has been on  14 to 16 hours per day since I got it 
about 3 years ago.


73,  Doug  VE3MV


- Original Message - 
From: "Tom Branton" 

To: "Tom Branton" 
Cc: 
Sent: Tuesday, April 16, 2013 8:03 AM
Subject: Re: [Elecraft] K3 power supply recommendations



The K3 in question is a K3/100.  Thanks,

Tom



On Apr 16, 2013, at 6:26 AM, "Tom Branton"  
wrote:



Good morning everyone ,

I think I have found a very nicely maintained and equipped K3 to 
purchase. Any purchase recommendations as to a well constructed and 
trouble free power supply?


Thanks

Tom
WD5DFE



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Re: [Elecraft] K3 power supply recommendations

[Tom Branton]

The K3 in question is a K3/100.  Thanks,

Tom



On Apr 16, 2013, at 6:26 AM, "Tom Branton"  wrote:

> Good morning everyone ,
> 
> I think I have found a very nicely maintained and equipped K3 to purchase. 
> Any purchase recommendations as to a well constructed and trouble free power 
> supply?
> 
> Thanks
> 
> Tom
> WD5DFE
> 
> 
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[Elecraft] K3 power supply recommendations

[Tom Branton]

Good morning everyone ,

I think I have found a very nicely maintained and equipped K3 to purchase. Any 
purchase recommendations as to a well constructed and trouble free power supply?

Thanks

Tom
WD5DFE


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Re: [Elecraft] (KX3) Voltage display

[Fred Smith]

I agree with Don this could happen to others and cause needless calls to
support for a simple fix. 

Myself among them 8>)


73,
Fred/N0AZZ
K3 Ser #'s 6730/5299--KX3 # 2573--K2/100--KAT100
P3/SVGA--KPA500--KAT500--W2



-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Don Wilhelm
Sent: Monday, April 15, 2013 6:24 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] (KX3) Voltage display

Rob,

That sounds like an email to kx3supp...@elecraft.com is in order.

73,
Don W3FPR

On 4/15/2013 7:14 PM, Rob May wrote:
> Dick,
> Two different cables, one of them the oem cable.  Both 5.5 x 2.1mm.  Both
have molded ends and measure full voltage with a DMM.  Both show just .1V
drop on 10W cw transmit.
>
> 73,
> Rob
> NV5E
>
> 
>> From: die...@comcast.net
>> To: roblitesp...@hotmail.com; elecraft@mailman.qth.net
>> Subject: RE: [Elecraft] (KX3) Voltage display
>> Date: Mon, 15 Apr 2013 16:05:41 -0700
>>
>> Is there any possibility that the coaxial DC connector is the wrong 
>> size for your KX3? I have had trouble mixing 2.5 and 2.1 mm 
>> connectors in my station.
>>
>> 73 de Dick, K6KR
>>
>>
>> -Original Message-
>> From: elecraft-boun...@mailman.qth.net 
>> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Rob May
>> Sent: Monday, April 15, 2013 3:53 PM
>> To: elecraft@mailman.qth.net
>> Subject: [Elecraft] (KX3) Voltage display
>>
>> I've been having a weird problem with my KX3.  No matter what voltage 
>> I plug into the external power jack, the display will briefly show 
>> the correct voltage and then it will show 10.4V.  I've measured the 
>> voltage at the barrel tip on the cord and it's either 12.9V (if on a 
>> gel cell) or 14.4V if I use the shack PS.  In either case the KX3 
>> internal display shows 10.4V after briefly showing 12.9V or 14.4V.  
>> FW 1.41, all options including internal battery charger.  It didn't 
>> used to do this, any help would be greatly appreciated.
>>
>> 73,
>> Rob
>> NV5E
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Checked by AVG - www.avg.com
Version: 2013.0.2904 / Virus Database: 3162/6246 - Release Date: 04/15/13

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[Elecraft] K2 60m Kit & N0SS keyer

[Chris Meagher]

I bought a 60m add-on kit for my K2, but on reading the instructions, I
find it is incompatible with the N0SS amp keyer that I have fitted, in that
they both use the same socket. Has anyone found a way to have both
installed? Reply off the reflector OK, to acdmeag...@gmail.com. From Chris
VK2ACD  K2-3666 K3-0685 P3
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