Re: [Elecraft] K3 no RF Output

[Roy Morris, Jr. via Elecraft]

Check your TMP cable connections.

Sent from Mail for Windows 10

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Re: [Elecraft] P3 Not Zeroed

[Bob McGraw K4TAX]

Just checked my K3S and P3 using WWV 5.0 MHz and 15.0MHz.  The error 
indicated on the radio is 1 to 2 Hz low.  The P3 is correct for both 
frequencies with a Ref Cal value of -55 for both frequencies.


My K3S calibration method uses CW mode, with CWT active and press SPOT.  
That will zero the radio to the WWV carrier frequency and account for 
the user selected sidetone frequency.   It will indicate such on VFO A 
showing any + or - difference. 14.999.999 a 1 Hz error and  4.999.998 a 
2 Hz error.  The P2 shows the exact frequency with MKR A on both WWV 
frequencies.


All good enough for me.

73

Bob, K4TAX


On 7/23/2019 2:55 PM, Kevin, N4TT wrote:

Thanks all!

There's a ref cal on the K3s. I ran through the procedure for that using 15
MHz and rechecked on 10 MHz. Seems this was quite a bit off. Now, not only
is it lining up on WWV but also any CW signal I select lines up very
closely between the marker on the P3 and a 600 Hz marker on fldigi with the
sidetone set to 600.

A thing I noticed. When making the adjustment on the P3 the offset would be
different for different signals. 15 MHz was 263 while 10 MHz was 210. So
there was no one-size-fits-all adjustment there. On the K3s, I adjusted for
15 and everything came into sync including the P3, which now reads 12 for
the ref adjustment and is consistent across a number of signals.


Learning more every day. And liking it more.

73,
Kev N4TT

On Tue, Jul 23, 2019 at 2:38 PM Joe Subich, W4TV  wrote:


On 2019-07-23 12:47 PM, Alan Bloom wrote:
  > Also be aware that the center frequency differs depending on mode.

The P3 *should be able to account for that* by using the FI get:


FI * (I.F. Center Frequency; GET only)
RSP format: Fi; where  represents the last 4 digits of the
K3’s present I.F. center frequency in Hz.  Example: If  = 5000,
the I.F. center frequency is 8215000 Hz.  Intended for use with
panadapters, which need to keep track of the exact I.F. center
frequency as filter bandwidths and shifts are changed by the
operator.

73,

 ... Joe, W4TV


On 2019-07-23 12:47 PM, Alan Bloom wrote:

Good advice.

Also be aware that the center frequency differs depending on mode.  For
example, it is the supressed carrier frequency on SSB but is offset by
typically 600 Hz on CW.

I like to use AM mode for frequeny calibration.  After doing a frequency
calibration on the K3, tune to a signal on the AM broadcast band and
adjust the P3 frequency calibration.  (MENU:RefCal.  Cal procedurre is
on page 39 of the manual)  As I recall, AM broadcast stations are
required to be within 20 Hz of nominal frequency but are typically much
closer than that.

Alan N1AL


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Re: [Elecraft] Fwd: K4 SDR version

[Jim Brown]

On 7/23/2019 5:10 PM, Joe Subich, W4TV wrote:

Typically AM patterns are designed to put nulls in the direction
of stations that a secondary user of a frequency must protect. 


One of my coop jobs from the University of Cincinnati was working in the 
engineering office of a broadcast consultant designing those arrays. 
Several decades ago, the AM Rules were revised to greatly reduce the 
protection given to Clear Channel stations like WBZ.


73, Jim K9YC


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Re: [Elecraft] Fwd: K4 SDR version

[Jim Brown]

Actually different patterns day and night.
https://transition.fcc.gov/fcc-bin/amq?list=0=13969

73, Jim K9YC

On 7/23/2019 4:42 PM, Wes wrote:
I should add that KVOI runs a directional antenna with the (crazy) 
pattern peak pointed in my direction.  Why escapes me, as there is no 
one to service in my direction. 



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Re: [Elecraft] Fwd: K4 SDR version

[Joe Subich, W4TV]

On 2019-07-23 7:42 PM, Wes wrote:

Why escapes me, as there is no one to service in my direction.


Typically AM patterns are designed to put nulls in the direction
of stations that a secondary user of a frequency must protect.
From the list of stations on 1030, I suspect KVOI is required to
protect WBZ (Boston), KTWO (Casper WY) and possibly XEQR (Mexico
City).

Looking at the protection requirements along with what is possible
when it comes to antenna patterns will often lead one to understand
the reason for "crazy" patterns (particularly nigh time patterns).

73,

   ... Joe, W4TV


On 2019-07-23 7:42 PM, Wes wrote:
I should add that KVOI runs a directional antenna with the (crazy) 
pattern peak pointed in my direction.  Why escapes me, as there is no 
one to service in my direction.



On 7/23/2019 2:58 PM, Wes wrote:

Ralph,

KVOI is -7 dBm here on my 40-meter dipole.  On the 160 antenna it's 
about 3 dB higher but that's folded over for the lightning season,  
Despite running 7 dB more power and not being a much different 
distance KUAZ is about 13 dB weaker.  I guess that's why the 
commercial owner gave it to the U of A, took a tax write off and lets 
the taxpayers fund it.  KFLF, (50 KW) further away still is -6 dBm.


My SDR-IQs handle this just fine.  I briefly owned an RSP-2 Pro that 
folded up like a cheap suitcase and was unusable on any frequency and 
it supposedly has a BCB filter.  I suspect that the K4 will be unfazed.



Wes  N7WS



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[Elecraft] Reflector test

[RALPH TURK]

Testing to see if My email shows up.

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Re: [Elecraft] P3 Not Zeroed

[Gary Smith]

This may be too simplistic or doesn't 
address the OP as well as it could but...

I do have an external 10M reference, a 
GPSDO and use that to keep the K3s in 
proper frequency adjustment. That said, 
the instructions in the K3 or K3s manual 
address how to zero beat a known frequency 
source like WWV.

Once the K3/K3s is adjusted to be 
accurately on the exact frequency (ie: 
15.00). I then go to the P3 and at the 
narrowest "Span" option on the P3, select 
"Ref Cal" from the menu button. and move 
the signal; till it is at dead center on 
the screen, right in the center of the 
15.00 MHz signal, right at the center 
mark.

I then tap select and this returns the P3 
to normal function. This leaves me with a 
monitor that shows exactly where signals 
are and when I use the marker function, it 
lands that chosen signal dead center and 
the K3s reflects it as well as the P3.

Nothing like a cool smoothie on a hot 
day...

73,

Gary
KA1J

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Re: [Elecraft] Fwd: K4 SDR version

[Wes]

I should add that KVOI runs a directional antenna with the (crazy) pattern peak 
pointed in my direction.  Why escapes me, as there is no one to service in my 
direction.



On 7/23/2019 2:58 PM, Wes wrote:

Ralph,

KVOI is -7 dBm here on my 40-meter dipole.  On the 160 antenna it's about 3 dB 
higher but that's folded over for the lightning season,  Despite running 7 dB 
more power and not being a much different distance KUAZ is about 13 dB 
weaker.  I guess that's why the commercial owner gave it to the U of A, took a 
tax write off and lets the taxpayers fund it.  KFLF, (50 KW) further away 
still is -6 dBm.


My SDR-IQs handle this just fine.  I briefly owned an RSP-2 Pro that folded up 
like a cheap suitcase and was unusable on any frequency and it supposedly has 
a BCB filter.  I suspect that the K4 will be unfazed.



Wes  N7WS

On 7/23/2019 9:54 AM, RALPH TURK wrote:

Greetings


I live between 2  AM Broadcast stations.  First Station KVOI 1030 AM @ 10 
KW  day, 1kw  night 2 miles south.



Second StationKUAT 1550 AM @ 50KW  day time only.  No night time power 2 
miles north.



My question is how well will the K4 perform in this environment  The only 
problem with the K 3 is caused



by rusty fences etc radiating a mix between stations.  Day time 75 -80 not 
usable some of the time.



This is not  a overload problem, just spurs.


Ralph, W7HSG




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[Elecraft] Dummy Load Recommendation

[Mark Murray via Elecraft]

The previously described RFL-100 $50 resistor dummy load kit (also available
pre-built) is perfect.  With a very nice cabinet, choice of UHF connectors,
and very nice price.

For those who experiment with very small RF Termination Resistor devices,
the microwave company Anaren, Inc., of East Syracuse, NY now manufactures
(overseas) a tiny 450-watt RF termination device that measures roughly
1-inch x 1/2-inch.  DC-through 1.7-GHz.  $24.00 from Mouser.com.  Model #
G450N50W4.  AiN device, 50-Ohms +/-2%.   Two flange holes for mounting on
heat sink.  See spec sheet for temperature limits.  Even at 100-watts
dissipation you'll need a good heat sink and cooling fan; likewise when
wiring up four.  Recommended for experimenters. 
// Mark W2OR
~~ ~~ ~~



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Re: [Elecraft] K4 soundcard/CODEC

[Nolan Kienitz]

Wayne,

Any possibility of a future "enhanced" soundcard/CODEC that might better
accommodate Windoze for the K3?

The current KIO3B is great, but just thinking out of the box for an enhanced
version.

73,

Nolan Kienitz
KI5IO



-
73  -  Nolan Kienitz,  KI5IO
--
Sent from: http://elecraft.365791.n2.nabble.com/
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Re: [Elecraft] Fwd: K4 SDR version

[Jim Brown]

Hi Wes,

I looked them up on the FCC AM Query page. 
https://www.fcc.gov/media/radio/am-query


The "intermediate detail" listing is the most useful.  KFLF is not in 
the database, but KFLT is.


In addition to power, three other factors affect signal strength. 1) 
Attenuation by groundwave increases a LOT with frequency. KVOI is on the 
low end of the band, KUAZ on the high end. It is so strongly 
frequency-dependent that the FCC technical regs publish ground wave 
curves for every 100 kHz or so. 2) Antenna directivity. All three are 
non-directional daytime, but KFLT is directional at night. 3) Antenna 
height. And, BTW, while KVOI runs 10kW daytime, their license is for 1kW 
night.


When you get a line listing, click on the call to get technical details. 
For KFLT, click on the "Electrical Field Strength pattern plot (PDF)" to 
see the antenna's pattern.


73, Jim K9YC

On 7/23/2019 2:58 PM, Wes wrote:
KVOI is -7 dBm here on my 40-meter dipole.  On the 160 antenna it's 
about 3 dB higher but that's folded over for the lightning season,  
Despite running 7 dB more power and not being a much different 
distance KUAZ is about 13 dB weaker.  I guess that's why the 
commercial owner gave it to the U of A, took a tax write off and lets 
the taxpayers fund it.  KFLF, (50 KW) further away still is -6 dBm.



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Re: [Elecraft] Blank E-Mails (was Re: K4 SDR version)

[rich hurd WC3T]

I have apologized privately to the poster and here I will put on my hair
shirt and flog myself with a length of coax.  I’ve seen this behavior,
albeit on web based forums, and just assumed laziness rather than other
causes.   Just shows you can teach an old dog new tricks.

Don’t sic Eric on me.  :)  Let’s end this here.

On Tue, Jul 23, 2019 at 17:01 Lynn W. Taylor, WB6UUT <
kx...@coldrockshotbrooms.com> wrote:

> Because it's possible to do all kinds of evil things through HTML, this
> list, and many others simply remove everything that is HTML encoded.
>
> Unfortunately, HTML is the default in most mail clients.
>
> On 7/23/2019 8:53 AM, rich hurd WC3T wrote:
> > [SLIGHTLY OFF TOPIC WARNING]
> >
> > This is not the first time I've seen an email with zero content, just a
> > clause as a subject.  And this is not the first venue I've seen it on.
> >
> > Is this a thing?I have no idea what the original poster is going on
> > about.  There's absolutely nothing you can infer from this subject line.
> >
> > I know, I could just hit "delete" or spin the dial and I'll end up doing
> > that.  But come on folks.  Spend some time crafting an email that is
> > readable and understandable and you'll get better answers.  And people
> will
> > definitely get a better impression of your ability to form a sentence in
> > the King's English.
> >
> > Rant over.
> >
> >
> > On Tue, Jul 23, 2019 at 11:39 AM RALPH TURK  wrote:
> >
> >>
> >> __
> >> Elecraft mailing list
> >> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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> >>
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> >> Message delivered to r...@wc3t.us
> >>
> >
> >
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>
-- 
72,
Rich Hurd / WC3T / DMR: 3142737
Northampton County RACES, EPA-ARRL Public Information Officer for Scouting
Latitude: 40.761621 Longitude: -75.288988  (40°45.68' N 75°17.33' W) Grid:
*FN20is*
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Re: [Elecraft] Dummy Load

[k2asp kanafi.org]

> On July 23, 2019 at 4:55 PM Jim Danehy  wrote:
> 
> 
> I worked K8MFO on 160 which is 250 miles from me. Used a Heathkit Dummy loaf 
> with oil in the can. 

I am limited in antennas because of the rental apartment rules so I use a 
mag-loop at 15 watts. I've often wondered whether I would have a better signal 
running 100 W into my MFJ dummy load.  Maybe I should try it!

73 de K2ASP
K2/100
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Re: [Elecraft] Fwd: K4 SDR version

[Wes]

Ralph,

KVOI is -7 dBm here on my 40-meter dipole.  On the 160 antenna it's about 3 dB 
higher but that's folded over for the lightning season,  Despite running 7 dB 
more power and not being a much different distance KUAZ is about 13 dB weaker.  
I guess that's why the commercial owner gave it to the U of A, took a tax write 
off and lets the taxpayers fund it.  KFLF, (50 KW) further away still is -6 dBm.


My SDR-IQs handle this just fine.  I briefly owned an RSP-2 Pro that folded up 
like a cheap suitcase and was unusable on any frequency and it supposedly has a 
BCB filter.  I suspect that the K4 will be unfazed.



Wes  N7WS

On 7/23/2019 9:54 AM, RALPH TURK wrote:

Greetings


I live between 2  AM Broadcast stations.  First Station KVOI 1030 AM @ 10 KW  
day, 1kw  night 2 miles south.


Second StationKUAT 1550 AM @ 50KW  day time only.  No night time power 2 miles 
north.


My question is how well will the K4 perform in this environment  The only 
problem with the K 3 is caused


by rusty fences etc radiating a mix between stations.  Day time 75 -80 not 
usable some of the time.


This is not  a overload problem, just spurs.


Ralph, W7HSG


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Re: [Elecraft] test

[David Woolley]

The longer established email programs that support HTML mail will always 
send it as multipart/alternative, with both HTML and plain text 
versions.  Almost certainly your email program does that.  However, it 
appears that there are an increasing number of email programs that only 
send HTML or other rich text versions.


I think the list software is stripping out the text/html variant, rather 
than rendering the HTML as plain text.



--
David Woolley

On 23/07/2019 18:51, RALPH TURK wrote:


This is a test of   HTML



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[Elecraft] Blank E-Mails (was Re: K4 SDR version)

[Lynn W. Taylor, WB6UUT]

Because it's possible to do all kinds of evil things through HTML, this 
list, and many others simply remove everything that is HTML encoded.


Unfortunately, HTML is the default in most mail clients.

On 7/23/2019 8:53 AM, rich hurd WC3T wrote:

[SLIGHTLY OFF TOPIC WARNING]

This is not the first time I've seen an email with zero content, just a
clause as a subject.  And this is not the first venue I've seen it on.

Is this a thing?I have no idea what the original poster is going on
about.  There's absolutely nothing you can infer from this subject line.

I know, I could just hit "delete" or spin the dial and I'll end up doing
that.  But come on folks.  Spend some time crafting an email that is
readable and understandable and you'll get better answers.  And people will
definitely get a better impression of your ability to form a sentence in
the King's English.

Rant over.


On Tue, Jul 23, 2019 at 11:39 AM RALPH TURK  wrote:



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Re: [Elecraft] Dummy Load recommendation

[Fred Jensen]

Recalls to mind Tom Schiller, N6BT, and his "Phased Illuminator."

73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

On 7/23/2019 1:42 PM, Jim Ragsdale wrote:
I quit using 60 W light bulbs when I worked a station in New Jersey 
from Memphis, Tennessee!

Jim W5LA ex K4QG ex WA4BAC ex WN4BAC


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Re: [Elecraft] Dummy Load

[David Gilbert]

I'd bet a lot of money that something besides the dummy load was doing 
most of the radiating.


Dave   AB7E



On 7/23/2019 1:55 PM, Jim Danehy wrote:

I worked K8MFO on 160 which is 250 miles from me. Used a Heathkit Dummy loaf 
with oil in the can.




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[Elecraft] Dummy Load

[Jim Danehy]

I worked K8MFO on 160 which is 250 miles from me. Used a Heathkit Dummy loaf 
with oil in the can. 

Sent from my iPhone
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Re: [Elecraft] P3 Not Zeroed

[Gwen Patton]

I thought an oscilkator was one of those green lizards with lots of teeth
that live in the swamp

On Tue, Jul 23, 2019 at 4:25 PM Nr4c  wrote:

> For CW, if radio is set to 7.040 then it will transmit a carrier on 7.040.
> If you tune to a station transmitting on 7.030 then your radio should also
> be at 7.039 and the P3 would show a spike on 7.030. The pitch of the audio
> is done in the receiver so you can make out the code. Otherwise you wound
> only hear “tch tch tccch” for a “U”.
>
> In the past an adjustable “BFO” or Beat Freeuency Oscilkator was used to
> beat against the incoming carrier to provide an audio so that you could
> hear the code. This was often needed due to you hardly ever worked someone
> on same frequency as your crystal. Once you found someone coming back to
> you, a turn of the BFO knob could provide a usable audio signal.
>
> The TX Sidetone is there for the same reason.
>
>
>
> Sent from my iPhone
> ...nr4c. bill
>
>
> > On Jul 23, 2019, at 2:31 PM, Kevin, N4TT  wrote:
> >
> > Maybe that's the basic question...
> >
> > If I tune the radio to 7.035 to set a CW signal for a pitch of 600 Hz (as
> > set using the PITCH function) what should I expect to see on the P3?
> >
> > 1) The P3 shows 7.035 and the CW signal is offset from the center by 600
> Hz?
> >
> > 2) The P3 shows 7.035 and compensates for the pitch placing the CW signal
> > directly under the cursor?
> >
> > 3) The P3 shows 7.035600 placing the CW signal directly under the cursor?
> >
> > I expect #2.
> >
> > I'll be trying out more this evening.
> >
> > Kev
> >
> >> On Tue, Jul 23, 2019 at 12:47 PM Alan Bloom  wrote:
> >>
> >> Good advice.
> >>
> >>
> >> Also be aware that the center frequency differs depending on mode.  For
> >> example, it is the supressed carrier frequency on SSB but is offset by
> >> typically 600 Hz on CW.
> >>
> >>
> >> I like to use AM mode for frequeny calibration.  After doing a frequency
> >> calibration on the K3, tune to a signal on the AM broadcast band and
> adjust
> >> the P3 frequency calibration.  (MENU:RefCal.  Cal procedurre is on page
> 39
> >> of the manual)  As I recall, AM broadcast stations are required to be
> >> within 20 Hz of nominal frequency but are typically much closer than
> that.
> >>
> >>
> >>
> >> Alan N1AL
> >>
> >>
> >> On 2019-07-23 08:20, Bob McGraw K4TAX wrote:
>
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-- 

-+-+-+-+-
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http://quarktime.net
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[Elecraft] For Sale KPA500

[Steve Lawrence via Elecraft]

For Sale KPA500. Price reduced. Full pictures available.

> https://www.eham.net/classifieds/detail/566704 
> 
Please email me off list.

73 - Steve WB6RSE
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Re: [Elecraft] Dummy Load recommendation

[Jim Ragsdale]

I quit using 60 W light bulbs when I worked a station in New Jersey from 
Memphis, Tennessee!

Jim W5LA ex K4QG ex WA4BAC ex WN4BAC

On 07/23/19 3:03 PM, Grant Youngman wrote:

As a new ham (1958-9) my "dummy load" was a 60 watt light bulb.  Even made a 
few local contacts with it.  Couldn’t afford anything else.  A good pi-network could load 
most anything, anyway .. :-)

Grant NQ5T
K3 #2091 KX3 #8342


But as a new young ham (1960's) I bought a cantenna (paint can filled with 
mineral oil and resistor load immersed) for HF stuff and a Knight-Kit SWR 
meter.  But as I got older and had more cash I got better stuff.


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Re: [Elecraft] P3 Not Zeroed

[Nr4c]

For CW, if radio is set to 7.040 then it will transmit a carrier on 7.040. If 
you tune to a station transmitting on 7.030 then your radio should also be at 
7.039 and the P3 would show a spike on 7.030. The pitch of the audio is done in 
the receiver so you can make out the code. Otherwise you wound only hear “tch 
tch tccch” for a “U”. 

In the past an adjustable “BFO” or Beat Freeuency Oscilkator was used to beat 
against the incoming carrier to provide an audio so that you could hear the 
code. This was often needed due to you hardly ever worked someone on same 
frequency as your crystal. Once you found someone coming back to you, a turn of 
the BFO knob could provide a usable audio signal. 

The TX Sidetone is there for the same reason. 



Sent from my iPhone
...nr4c. bill


> On Jul 23, 2019, at 2:31 PM, Kevin, N4TT  wrote:
> 
> Maybe that's the basic question...
> 
> If I tune the radio to 7.035 to set a CW signal for a pitch of 600 Hz (as
> set using the PITCH function) what should I expect to see on the P3?
> 
> 1) The P3 shows 7.035 and the CW signal is offset from the center by 600 Hz?
> 
> 2) The P3 shows 7.035 and compensates for the pitch placing the CW signal
> directly under the cursor?
> 
> 3) The P3 shows 7.035600 placing the CW signal directly under the cursor?
> 
> I expect #2.
> 
> I'll be trying out more this evening.
> 
> Kev
> 
>> On Tue, Jul 23, 2019 at 12:47 PM Alan Bloom  wrote:
>> 
>> Good advice.
>> 
>> 
>> Also be aware that the center frequency differs depending on mode.  For
>> example, it is the supressed carrier frequency on SSB but is offset by
>> typically 600 Hz on CW.
>> 
>> 
>> I like to use AM mode for frequeny calibration.  After doing a frequency
>> calibration on the K3, tune to a signal on the AM broadcast band and adjust
>> the P3 frequency calibration.  (MENU:RefCal.  Cal procedurre is on page 39
>> of the manual)  As I recall, AM broadcast stations are required to be
>> within 20 Hz of nominal frequency but are typically much closer than that.
>> 
>> 
>> 
>> Alan N1AL
>> 
>> 
>> On 2019-07-23 08:20, Bob McGraw K4TAX wrote:

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Re: [Elecraft] Dummy Load recommendation

[Grant Youngman]

As a new ham (1958-9) my "dummy load" was a 60 watt light bulb.  Even made a 
few local contacts with it.  Couldn’t afford anything else.  A good pi-network 
could load most anything, anyway .. :-)

Grant NQ5T
K3 #2091 KX3 #8342

> 
> But as a new young ham (1960's) I bought a cantenna (paint can filled with 
> mineral oil and resistor load immersed) for HF stuff and a Knight-Kit SWR 
> meter.  But as I got older and had more cash I got better stuff.
> 

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Re: [Elecraft] equalizer on k4

[Nr4c]

You can’t move it with your finger or a mouse. I guess knobs are “out of 
style”, Grant. 

Sent from my iPhone
...nr4c. bill


> On Jul 23, 2019, at 1:04 PM, Mike Markowski  wrote:
> 
> running my logging program.  I keep meanin

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Re: [Elecraft] P3 Not Zeroed

[Alan Bloom]

You could be right.  I'm out of town right now so I can't check it.  But
I think I remember that in some of the digital modes the definition of
VFO A frequency is different. 

Alan N1AL 

On 2019-07-23 11:36, Joe Subich, W4TV wrote:

> On 2019-07-23 12:47 PM, Alan Bloom wrote: 
> 
>> Also be aware that the center frequency differs depending on mode.
> 
> The P3 *should be able to account for that* by using the FI get:
> 
>> FI * (I.F. Center Frequency; GET only)
>> RSP format: Fi; where  represents the last 4 digits of the K3's 
>> present I.F. center frequency in Hz.  Example: If  = 5000, the I.F. 
>> center frequency is 8215000 Hz.  Intended for use with panadapters, which 
>> need to keep track of the exact I.F. center frequency as filter bandwidths 
>> and shifts are changed by the
>> operator.
> 
> 73,
> 
> ... Joe, W4TV
> 
> On 2019-07-23 12:47 PM, Alan Bloom wrote: 
> 
>> Good advice.
>> 
>> Also be aware that the center frequency differs depending on mode.  For
>> example, it is the supressed carrier frequency on SSB but is offset by
>> typically 600 Hz on CW.
>> 
>> I like to use AM mode for frequeny calibration.  After doing a frequency
>> calibration on the K3, tune to a signal on the AM broadcast band and
>> adjust the P3 frequency calibration.  (MENU:RefCal.  Cal procedurre is
>> on page 39 of the manual)  As I recall, AM broadcast stations are
>> required to be within 20 Hz of nominal frequency but are typically much
>> closer than that.
>> 
>> Alan N1AL
> 
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Re: [Elecraft] P3 Not Zeroed

[Kevin, N4TT]

Thanks all!

There's a ref cal on the K3s. I ran through the procedure for that using 15
MHz and rechecked on 10 MHz. Seems this was quite a bit off. Now, not only
is it lining up on WWV but also any CW signal I select lines up very
closely between the marker on the P3 and a 600 Hz marker on fldigi with the
sidetone set to 600.

A thing I noticed. When making the adjustment on the P3 the offset would be
different for different signals. 15 MHz was 263 while 10 MHz was 210. So
there was no one-size-fits-all adjustment there. On the K3s, I adjusted for
15 and everything came into sync including the P3, which now reads 12 for
the ref adjustment and is consistent across a number of signals.


Learning more every day. And liking it more.

73,
Kev N4TT

On Tue, Jul 23, 2019 at 2:38 PM Joe Subich, W4TV  wrote:

>
> On 2019-07-23 12:47 PM, Alan Bloom wrote:
>  > Also be aware that the center frequency differs depending on mode.
>
> The P3 *should be able to account for that* by using the FI get:
>
> > FI * (I.F. Center Frequency; GET only)
> > RSP format: Fi; where  represents the last 4 digits of the
> > K3’s present I.F. center frequency in Hz.  Example: If  = 5000,
> > the I.F. center frequency is 8215000 Hz.  Intended for use with
> > panadapters, which need to keep track of the exact I.F. center
> > frequency as filter bandwidths and shifts are changed by the
> > operator.
>
> 73,
>
> ... Joe, W4TV
>
>
> On 2019-07-23 12:47 PM, Alan Bloom wrote:
> > Good advice.
> >
> > Also be aware that the center frequency differs depending on mode.  For
> > example, it is the supressed carrier frequency on SSB but is offset by
> > typically 600 Hz on CW.
> >
> > I like to use AM mode for frequeny calibration.  After doing a frequency
> > calibration on the K3, tune to a signal on the AM broadcast band and
> > adjust the P3 frequency calibration.  (MENU:RefCal.  Cal procedurre is
> > on page 39 of the manual)  As I recall, AM broadcast stations are
> > required to be within 20 Hz of nominal frequency but are typically much
> > closer than that.
> >
> > Alan N1AL
> >
>
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Re: [Elecraft] Dummy Load recommendation

[Edward R Cole]

This discussion reminds me that most on this list are HFers and never 
go above 30mcs (MHz).  Or buy all their ham stuff and believe the 
mfrs specs or meters without question.  Probably do not build 
homebrew equipment so never had to measure if such-an-such actually 
is working (and at what level).

By now I should have made a few of you angry at my post.   Good!

For most arm-chair operators a Bird and Bird load will be more than 
adequate to determine power and SWR to +/- 5% full scale reading.  It 
was my main antenna meter when working as a professional 
technician.  Rugged, fairly accurate, dependable (don't drop it off the tower).


A good non-inductive 50-ohm resistive load and a scope able to 
measure over 50-MHz will do better.


Next some better directional couplers will give more accurate return 
loss (SWR).


My "standard" is using better than good directional couplers (>20 dB) 
with my HP-432A mw power meter using  up to 10 mw signal 
sources.  This is usable to 18 GHz.  With use of high power coax 
attenuators, I can measure power as high as the rating of the 
attenuator.  I use 50-dB directional couplers on 1296 to measure my 
600w amp (58 dBm).


XG3 is a good 1mw source (0 dBm) up to 200-MHz, though not real 
accurate in frequency (which is not that important for 
power/reflected power).  But harmonic energy exists unless you use a 
filter since the output is a square wave.


I recently bought a used Bird HP 8202 500w load (good to 2500-MHz) 
which I can use with amps up to 1500w (as long as transmission is 
kept short - less than a minute; most tests take only a few 
seconds).  I have a Bird 25w load which I have used up to 150w for 
short measurements.  If it feels hot stop  until cool again.


But as a new young ham (1960's) I bought a cantenna (paint can filled 
with mineral oil and resistor load immersed) for HF stuff and a 
Knight-Kit SWR meter.  But as I got older and had more cash I got better stuff.


A dummy load that you can trust to be SWR 1:1 is good thing to check 
those SWR meters or antenna analyzers with.  Handy when measurements 
seem to be "all over the map".  Use it to test coax cables, for instance.


73, Ed - KL7UW
  http://www.kl7uw.com
Dubus-NA Business mail:
  dubus...@gmail.com 


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Re: [Elecraft] Fwd: K4 SDR version

[RALPH TURK]

Thanks Joe
I am more concerned if the SDR front end will be overloaded.
The spurs are a work in progress.  If it rained once a week,
I would not have any spurs.
Ralph


> On July 23, 2019 at 12:31 PM "Joe Subich, W4TV"  wrote:
> 
> 
> 
> On 2019-07-23 12:54 PM, RALPH TURK wrote:
>  >> My question is how well will the K4 perform in this environment
> 
> If the mixing is occurring external to your transceiver - you say:
> 
> >> The only problem with the K 3 is caused by rusty fences etc
> >> radiating a mix between stations.
> 
> The K4 will perform the same as the K3 as once the spurs are created
> externally there is nothing the transceiver can do to reject them.
> 
> 73,
> 
> ... Joe, W4TV
> 
> 
> On 2019-07-23 12:54 PM, RALPH TURK wrote:
> >> Greetings
> >>
> >>
> >> I live between 2  AM Broadcast stations.  First Station KVOI 1030 AM @ 10 
> >> KW  day, 1kw  night 2 miles south.
> >>
> >>
> >> Second StationKUAT 1550 AM @ 50KW  day time only.  No night time power 2 
> >> miles north.
> >>
> >>
> >> My question is how well will the K4 perform in this environment  The only 
> >> problem with the K 3 is caused
> >>
> >>
> >> by rusty fences etc radiating a mix between stations.  Day time 75 -80 not 
> >> usable some of the time.
> >>
> >>
> >> This is not  a overload problem, just spurs.
> >>
> >>
> >> Ralph, W7HSG
> >>
> >>
> >> 520-444-6610
> >>
> >>
> >>
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Re: [Elecraft] P3 Not Zeroed

[Joe Subich, W4TV]

On 2019-07-23 12:47 PM, Alan Bloom wrote:
> Also be aware that the center frequency differs depending on mode.

The P3 *should be able to account for that* by using the FI get:


FI * (I.F. Center Frequency; GET only)
RSP format: Fi; where  represents the last 4 digits of the 
K3’s present I.F. center frequency in Hz.  Example: If  = 5000, 
the I.F. center frequency is 8215000 Hz.  Intended for use with 
panadapters, which need to keep track of the exact I.F. center 
frequency as filter bandwidths and shifts are changed by the

operator.


73,

   ... Joe, W4TV


On 2019-07-23 12:47 PM, Alan Bloom wrote:

Good advice.

Also be aware that the center frequency differs depending on mode.  For
example, it is the supressed carrier frequency on SSB but is offset by
typically 600 Hz on CW.

I like to use AM mode for frequeny calibration.  After doing a frequency
calibration on the K3, tune to a signal on the AM broadcast band and
adjust the P3 frequency calibration.  (MENU:RefCal.  Cal procedurre is
on page 39 of the manual)  As I recall, AM broadcast stations are
required to be within 20 Hz of nominal frequency but are typically much
closer than that.

Alan N1AL



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Re: [Elecraft] P3 Not Zeroed

[Kevin, N4TT]

Maybe that's the basic question...

If I tune the radio to 7.035 to set a CW signal for a pitch of 600 Hz (as
set using the PITCH function) what should I expect to see on the P3?

1) The P3 shows 7.035 and the CW signal is offset from the center by 600 Hz?

2) The P3 shows 7.035 and compensates for the pitch placing the CW signal
directly under the cursor?

3) The P3 shows 7.035600 placing the CW signal directly under the cursor?

I expect #2.

I'll be trying out more this evening.

Kev

On Tue, Jul 23, 2019 at 12:47 PM Alan Bloom  wrote:

> Good advice.
>
>
> Also be aware that the center frequency differs depending on mode.  For
> example, it is the supressed carrier frequency on SSB but is offset by
> typically 600 Hz on CW.
>
>
> I like to use AM mode for frequeny calibration.  After doing a frequency
> calibration on the K3, tune to a signal on the AM broadcast band and adjust
> the P3 frequency calibration.  (MENU:RefCal.  Cal procedurre is on page 39
> of the manual)  As I recall, AM broadcast stations are required to be
> within 20 Hz of nominal frequency but are typically much closer than that.
>
>
>
> Alan N1AL
>
>
> On 2019-07-23 08:20, Bob McGraw K4TAX wrote:
>
> First make sure the radio is correct on all WWV frequencies.   I use CW
> mode and Auto Spot.  That will get to within 2 Hz or better. Adjust the Ref
> freq to calibrate.
>
> Then you can calibrate the P3 to the radio.
>
> No tuning or listening for zero beat required.
>
> Bob, K4TAX
>
>
> Sent from my iPhone
>
> On Jul 23, 2019, at 9:54 AM, Kevin, N4TT  wrote:
>
> Hi Jim:
>
> I thought I had the right adjustment on the P3 but it seems global. I can't
> figure out why WWV can be spot on and then another signal off. I can't even
> be sure if it is the radio or the P3 (or me) at this point. I'll keep
> digging.
>
> Kev
>
>
>
> On Tue, Jul 23, 2019 at 3:57 AM Jim Brown 
> wrote:
>
> It's been a while since I looked at the manuals for my K3 and P3, but I
> do recall that there are calibration procedures for both.
>
> 73, Jim K9YC
>
> On 7/22/2019 9:28 PM, Kevin, N4TT wrote:
> I noticed my P3 doesn't seem to be zeroed with the K3s. When I tune in a
>
> CW
>
> signal with a 600 Hz pitch the P3 is off by 71 Hz. Not much but, I
> expected  - zero.
>
> In AM - WWV at 5 MHz the P3 seems spot on.
>
>
>
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Re: [Elecraft] Fwd: K4 SDR version

[Joe Subich, W4TV]

On 2019-07-23 12:54 PM, RALPH TURK wrote:
>> My question is how well will the K4 perform in this environment

If the mixing is occurring external to your transceiver - you say:


The only problem with the K 3 is caused by rusty fences etc
radiating a mix between stations.


The K4 will perform the same as the K3 as once the spurs are created
externally there is nothing the transceiver can do to reject them.

73,

   ... Joe, W4TV


On 2019-07-23 12:54 PM, RALPH TURK wrote:

Greetings


I live between 2  AM Broadcast stations.  First Station KVOI 1030 AM @ 10 KW  
day, 1kw  night 2 miles south.


Second StationKUAT 1550 AM @ 50KW  day time only.  No night time power 2 miles 
north.


My question is how well will the K4 perform in this environment  The only 
problem with the K 3 is caused


by rusty fences etc radiating a mix between stations.  Day time 75 -80 not 
usable some of the time.


This is not  a overload problem, just spurs.


Ralph, W7HSG


520-444-6610




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Re: [Elecraft] KX3 SWR issue

[Hank]

What voltage is supplying the radio?  There was a bug for the ATU centered 
around falling supply voltage and this may have something to do with that - 
even though you do not have a tuner.


The factory had to change a resistor value to correct along with some firmware. 
 

 
- Original Message -
From: Len (lene...@ca.rr.com)
Date: 07/23/19 01:27
To: elecraft@mailman.qth.net
Subject: [Elecraft] KX3 SWR issue

Curious if anyone on the reflector has experienced false SWR readings on their 
KX3?  No antenna tuner is installed.  Radio tested on a dependable dummy load 
and SWR/Power meter.  On transmit at 5.8 W or less, the radio displays 
"full-scale" SWR reading (> 1.4-1) with power output consistent with radio 
power setting.  At 6w and above, display jumps down to 0 SWR and 0 RF output 
even though the radio is still able to transmit.
Receiver functions perfectly.

I have initiated an EENT, and re-loded latest software from Elecraft site. I 
loaded the original factory configuration provided to me by Elecraft.  If 
anyone has any further suggestions that I might consider before I send the unit 
back to Elecraft for evaluation, I would be very grateful.  Tnx and 73
Len, K6LEN
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Re: [Elecraft] K4 soundcard/CODEC

[Wayne Burdick]

We're using a newer part that works correctly with Windows computers. Also, the 
K4 provides a superset of K3S I/O functionality generally.

73,
Wayne
N6KR


> On Jul 23, 2019, at 8:09 AM, Nr4c  wrote:
> 
> Probably not. There is 4 to 5 years between radios and I expect some 
> advancement in this technology. 
> 
> Sent from my iPhone
> ...nr4c. bill
> 
> 
>> On Jul 22, 2019, at 10:57 PM, Jim N7US  wrote:
>> 
>> I apologize if this has been asked before.
>> 
>> 
>> 
>> Is the soundcard/CODEC in the K4 the same as in the K3S?
>> 
>> 
>> 
>> Jim N7US
>> 
>> 
>> 
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[Elecraft] test

[RALPH TURK]

This is a test of Plain text
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[Elecraft] test

[RALPH TURK]

This is a test of   HTML

Ralph, W7HSG
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[Elecraft] Elecraft CW Net.......speed

[Tom Warren]

Kevin, tnx for the reply. I fully understand the reasoning for closer spacing. 
I’ll try to checkin sometime when condx are a bit better, it was (349) copy 
through fast QSB and lots of summer QRN here at my place in GA.

Tnx for the memory….worked Tom many times….was a great guy. :)

73,
Tom
W4TMW

==

Hi Tom,

?? Your namesake, Tom Hammond (N0SS now SK), put a speed limit on me a 
long time ago.? I run at about 20 to 21 wpm, a good conversational 
speed.? Faster ops are welcome as are those who run more slowly.? While 
working slower operators I put more space between each character and 
between words but maintain my character rate.? If I slow down too much 
my fingers get stuck either open or closed which causes many malformed 
characters.? I should not have been so hard on my hands when I was younger.

?? 73,

?? Kevin.? KD5ONS









"Don’t confuse effort with results.” 

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Re: [Elecraft] equalizer on k4

[Grant Youngman]

I’m scratching my head.  What’s cumbersome?

Grant NQ5T
K3 #2091 KX3 #8342

> 
> Since the K3 EQs are a little cumbersome to adjust, I wrote a small python
> program a year or two ago:
> 
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Re: [Elecraft] equalizer on k4

[Mike Markowski]

Since the K3 EQs are a little cumbersome to adjust, I wrote a small python
program a year or two ago:

  http://udel.edu/~mm/ham/elecraft/eq.html

The down side is that if you have another program querying the K3 while
running this, commands and replies intersperse.  I tend to run it to adjust
the EQs, then stop it before running my logging program.  I keep meaning to
write a linux K3 proxy to avoid the avoid the issue, but I find it much
easier to procrastinate. :-)  To other python programmers, please feel free
to enhance and share.

73,
Mike ab3ap

On Tue, Jul 23, 2019 at 12:23 PM Wayne Burdick  wrote:

> Yes. So is the EQ on our other transceivers.
>
> EQ on the K4 will be more easily adjustable, with a much better user
> interface, thanks to the large LCD.
>
> 73,
> Wayne
> N6KR
>
> 
> elecraft.com
>
> > On Jul 23, 2019, at 8:35 AM, Richard Donner 
> wrote:
> >
> > Does anyone know if the equalizer on the K4  is going to be  adjustable
> > real time so that you can listen to a station and adjust the equalizer as
> > you listen to the station.
> > Richard
>
>
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[Elecraft] Fwd: K4 SDR version

[RALPH TURK]

> Greetings
> 
> 
> I live between 2  AM Broadcast stations.  First Station KVOI 1030 AM @ 10 KW  
> day, 1kw  night 2 miles south.
> 
> 
> Second StationKUAT 1550 AM @ 50KW  day time only.  No night time power 2 
> miles north.
> 
> 
> My question is how well will the K4 perform in this environment  The only 
> problem with the K 3 is caused
> 
> 
> by rusty fences etc radiating a mix between stations.  Day time 75 -80 not 
> usable some of the time.
> 
> 
> This is not  a overload problem, just spurs.
> 
> 
> Ralph, W7HSG
> 
> 
> 520-444-6610 
> 
> 
>
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Re: [Elecraft] Dummy Load recommendation

[john]

I have a 500 watt and 1000 watt Bird dummy loads and they are well  
made.  These are not toys. I believe that they are rated for average  
continuous power and I do not agree that they need to be rated for 2X+  
the transmitted power, especially for intermittent use like most of us  
do.


John KK9A



Bob McGraw K4TAX wrote:
I agree that Bird dummy loads are some of the best.  Be sure to get  
one rated for at least your maximum power anticipated.  And do allow a  
margin of safety. I use 2x, thus for 100 watts I use a 250 watt rated  
load.


I purchase all of my power measurement equipment from NM3E.COM.

Bob, K4TAX

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Re: [Elecraft] P3 Not Zeroed

[Alan Bloom]

Good advice. 

Also be aware that the center frequency differs depending on mode.  For
example, it is the supressed carrier frequency on SSB but is offset by
typically 600 Hz on CW. 

I like to use AM mode for frequeny calibration.  After doing a frequency
calibration on the K3, tune to a signal on the AM broadcast band and
adjust the P3 frequency calibration.  (MENU:RefCal.  Cal procedurre is
on page 39 of the manual)  As I recall, AM broadcast stations are
required to be within 20 Hz of nominal frequency but are typically much
closer than that.

Alan N1AL 

On 2019-07-23 08:20, Bob McGraw K4TAX wrote:

> First make sure the radio is correct on all WWV frequencies.   I use CW mode 
> and Auto Spot.  That will get to within 2 Hz or better. Adjust the Ref freq 
> to calibrate. 
> 
> Then you can calibrate the P3 to the radio. 
> 
> No tuning or listening for zero beat required. 
> 
> Bob, K4TAX
> 
> Sent from my iPhone
> 
> On Jul 23, 2019, at 9:54 AM, Kevin, N4TT  wrote:
> 
> Hi Jim:
> 
> I thought I had the right adjustment on the P3 but it seems global. I can't
> figure out why WWV can be spot on and then another signal off. I can't even
> be sure if it is the radio or the P3 (or me) at this point. I'll keep
> digging.
> 
> Kev
> 
> On Tue, Jul 23, 2019 at 3:57 AM Jim Brown  wrote:
> 
> It's been a while since I looked at the manuals for my K3 and P3, but I
> do recall that there are calibration procedures for both.
> 
> 73, Jim K9YC
> 
> On 7/22/2019 9:28 PM, Kevin, N4TT wrote:
> I noticed my P3 doesn't seem to be zeroed with the K3s. When I tune in a CW 
> signal with a 600 Hz pitch the P3 is off by 71 Hz. Not much but, I
> expected  - zero.
> 
> In AM - WWV at 5 MHz the P3 seems spot on. 
> 
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Re: [Elecraft] equalizer on k4

[Wayne Burdick]

Yes. So is the EQ on our other transceivers.

EQ on the K4 will be more easily adjustable, with a much better user interface, 
thanks to the large LCD.

73,
Wayne
N6KR


elecraft.com

> On Jul 23, 2019, at 8:35 AM, Richard Donner  wrote:
> 
> Does anyone know if the equalizer on the K4  is going to be  adjustable
> real time so that you can listen to a station and adjust the equalizer as
> you listen to the station.
> Richard
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Re: [Elecraft] K4 SDR version

[rich hurd WC3T]

I've seen it on places like Facebook also.  I hope it's technical and not
stylistic.

On Tue, Jul 23, 2019 at 11:58 AM Grant Youngman 
wrote:

> Probably HTML.  Or maybe RTF (don’t know if RTF makes it through or not)
>
> Grant NQ5T
> K3 #2091 KX3 #8342
>
> >
> > This is not the first time I've seen an email with zero content, just a
> > clause as a subject.  And this is not the first venue I've seen it on.
> >
>
>

-- 
72,
Rich Hurd / WC3T / DMR: 3142737
Northampton County RACES, EPA-ARRL Public Information Officer for Scouting
Latitude: 40.761621 Longitude: -75.288988  (40°45.68' N 75°17.33' W) Grid:
*FN20is*
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Re: [Elecraft] K4 SDR version

[Grant Youngman]

Probably HTML.  Or maybe RTF (don’t know if RTF makes it through or not)

Grant NQ5T
K3 #2091 KX3 #8342

> 
> This is not the first time I've seen an email with zero content, just a
> clause as a subject.  And this is not the first venue I've seen it on.
> 

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Re: [Elecraft] K4 SDR version

[Dave]

I think it is when the original poster’s email client is posting as HTML 
content. 

Dave wo2x

Sent from my waxed string and tin cans. 

> On Jul 23, 2019, at 11:53 AM, rich hurd WC3T  wrote:
> 
> [SLIGHTLY OFF TOPIC WARNING]
> 
> This is not the first time I've seen an email with zero content, just a
> clause as a subject.  And this is not the first venue I've seen it on.
> 
> Is this a thing?I have no idea what the original poster is going on
> about.  There's absolutely nothing you can infer from this subject line.
> 
> I know, I could just hit "delete" or spin the dial and I'll end up doing
> that.  But come on folks.  Spend some time crafting an email that is
> readable and understandable and you'll get better answers.  And people will
> definitely get a better impression of your ability to form a sentence in
> the King's English.
> 
> Rant over.
> 
> 
>> On Tue, Jul 23, 2019 at 11:39 AM RALPH TURK  wrote:
>> 
>> 
>> __
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>> 
> 
> 
> -- 
> 72,
> Rich Hurd / WC3T / DMR: 3142737
> Northampton County RACES, EPA-ARRL Public Information Officer for Scouting
> Latitude: 40.761621 Longitude: -75.288988  (40°45.68' N 75°17.33' W) Grid:
> *FN20is*
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Re: [Elecraft] K4 SDR version

[rich hurd WC3T]

[SLIGHTLY OFF TOPIC WARNING]

This is not the first time I've seen an email with zero content, just a
clause as a subject.  And this is not the first venue I've seen it on.

Is this a thing?I have no idea what the original poster is going on
about.  There's absolutely nothing you can infer from this subject line.

I know, I could just hit "delete" or spin the dial and I'll end up doing
that.  But come on folks.  Spend some time crafting an email that is
readable and understandable and you'll get better answers.  And people will
definitely get a better impression of your ability to form a sentence in
the King's English.

Rant over.


On Tue, Jul 23, 2019 at 11:39 AM RALPH TURK  wrote:

>
> __
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>


-- 
72,
Rich Hurd / WC3T / DMR: 3142737
Northampton County RACES, EPA-ARRL Public Information Officer for Scouting
Latitude: 40.761621 Longitude: -75.288988  (40°45.68' N 75°17.33' W) Grid:
*FN20is*
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[Elecraft] K4 SDR version

[RALPH TURK]

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Re: [Elecraft] Dummy Load recommendation

[Charlie T]

The secret to using wire-wound resistors for a 50Ω load is to use a lot of them 
in parallel as the inductance divides just as the value does for the number of 
resistors.
Of course, this is only reasonable if you already have a pawful to start with.  
Otherwise, RF rated, big 50Ω non-inductive resistors are available from many 
sources.
I had a lot of 1200 Ω, 10 watt (light blue??) wire-wound resistors, so 24 of 
them between two pieces of G-10 made a decent HF dummy load with a good safety 
factor at 100 watts.

Another handy load, is one that will show 2:1 (100Ω) or 3:1 (150Ω) SWR.  It 
wouldn't have to take much power as you'd only be using it to check an SWR 
readout, etc.
I made a few out of a couple 2W resistors. They'll take reasonable power for a 
very short  (½ second??) check time.

73, Charlie k3ICH



-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of CUTTER DAVID via Elecraft
Sent: Tuesday, July 23, 2019 6:44 AM
To: hawley, charles j jr ; Art Nienhouse 

Cc: Elecraft@mailman.qth.net
Subject: Re: [Elecraft] Dummy Load recommendation)

I often wonder just how useful a precision dummy load really is in the amateur 
service.  I picked up home brew dummy load at the club the other day.  It 
measured 57ohms dc and comprises 4 wire-wound resistors attached in a cluster 
across the end of the coax.  After lots of disparaging remarks I put it on the 
VNA and it didn't look at all bad out to 30MHz: nothing over 1.5:1 and no 
spikes or dips to indicate resonances. I'll have to do it again and make a 
print-out for posterity. 
I've heard that salt water in a bucket works after a fashion.  
So the question is: how good do you need it to be?
David G3UNA 

 

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Re: [Elecraft] Feature Request: Shifting VFO

[Charlie T]

I used to like that feature with the Icom's, but touch-screens make it
redundant now.

73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Don Wilhelm
Sent: Saturday, July 20, 2019 1:48 PM
To: Kevin, N4TT ; Elecraft Reflector Reflector

Subject: Re: [Elecraft] Feature Request: Shifting VFO

Kev and all,

No vote on that dynamic VFO tuning for me.  It would only be suitable for me
if I could turn it off.
I have used a couple transceivers that had that type of tuning and it drove
me nuts.

73,
Don W3FPR

On 7/20/2019 1:38 PM, Kevin, N4TT wrote:
> Consider one of the settings for your computer mouse is shifting 
> resolution. This allows you to move the mouse real fast to get from 
> one end of three monitors to the other. And then, when you slow down, 
> the mouse goes into micro-resolution mode and you can be very precise 
> in your movements. This may be a Logitech feature.
> 
> I was thinking the same concept could be used for the VFO. I'm 
> familiar with the Fine/Course and RATE buttons but I was thinking 
> (danger Will
> Robinson) that it would be nice to quickly shift to the next RTTY 
> signal and then automatically switch to the FINE selection based on 
> how fast you turn the VFO.
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Re: [Elecraft] Dummy Load recommendation

[CUTTER DAVID via Elecraft]

I agree with all that has been said and suspect a lot of responders on this 
list are or were engineers who are used to using precision equipment.  I think 
it can be misleading to look at some instruments built into a transceiver for 
instance, but it never seemed to matter, until Elecraft came along.  I did my 
calibration with a Bird power meter and a Bird 500W load but I have no idea 
when they were last calibrated, so, what value do I put on the measurements?  
Well, it's good enough for me. But calibration is a special case and I'd never 
heard of amateurs calibrating for power before Elecraft.  Accurate power meters 
are costly to buy and maintain if you are in business, but for me now I'm 
retired it doesn't matter so much because I'm not doing it for a paying 
customer.  I think we are misled by the easy precision of the digital 
multimeter which for a few £ or $ is ten times as good as what we previously 
thought were good analogue instruments.  In short, I think technology can cause 
us to bite our finger nails unnecessarily.  10% or 20% power error is hardly 
noticeable to the guy on the other side of the world.  

David G3UNA


> On 23 July 2019 at 16:16 Bob McGraw K4TAX  wrote:
> 
> 
> Yes a calorimeter is the better way to measure power.   Not inexpensive 
> however. 
> 
> Bob, K4TAX
> 
> 
> Sent from my iPhone
> 
> > On Jul 23, 2019, at 10:07 AM, W2xj  wrote:
> > 
> > If you really want precision, use a water cooled load. Measure the flow 
> > rate and input and output temperature. You can precisely calculate power. 
> > 
> > Sent from my iPad
> > 
> >> On Jul 23, 2019, at 9:38 AM, Bob McGraw K4TAX  wrote:
> >> 
> >> Since power meter systems are calibrated at a known impedance {usually 50 
> >> ohms}, and they are voltage sensing devices, any deviation from the 
> >> calibration value will introduce an error in power indication.  It just 
> >> depends on how precise one prefers to be with power measurements.
> >> 
> >> 100 watts into 50 ohms is 70.71 volts
> >> 
> >> 100 watts into 55 ohms is 74.16 volts
> >> 
> >> 100 watts into 45 ohms is 67.08 volts
> >> 
> >> 73
> >> 
> >> Bob, K4TAX
> >> 
> >> 
> >>> On 7/23/2019 5:43 AM, CUTTER DAVID via Elecraft wrote:
> >>> I often wonder just how useful a precision dummy load really is in the 
> >>> amateur service.  I picked up home brew dummy load at the club the other 
> >>> day.  It measured 57ohms dc and comprises 4 wire-wound resistors attached 
> >>> in a cluster across the end of the coax.  After lots of disparaging 
> >>> remarks I put it on the VNA and it didn't look at all bad out to 30MHz: 
> >>> nothing over 1.5:1 and no spikes or dips to indicate resonances. I'll 
> >>> have to do it again and make a print-out for posterity.
> >>> I've heard that salt water in a bucket works after a fashion.
> >>> So the question is: how good do you need it to be?
> >>> David G3UNA
> >>> 
> >>> 
>  On 22 July 2019 at 23:58 "hawley, charles j jr"  
>  wrote:
>  
>  
>  Used Bird Attenuator is a good deal.
>  
>  https://nm3e.com/AttenuatorSampler.htm
>  
>  Then you’ll have a sample to plug into your counter or scope
>  
>  Chuck Jack Hawley
>  KE9UW
>  
> >>> __
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> >> 
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> > 
> 
> 
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[Elecraft] equalizer on k4

[Richard Donner]

Does anyone know if the equalizer on the K4  is going to be  adjustable
real time so that you can listen to a station and adjust the equalizer as
you listen to the station.
 Richard
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Re: [Elecraft] Dummy Load recommendation

[W2xj]

It doesn’t have to be that expensive. I have built several. DIY is as good as 
buying the finished product. 

Sent from my iPad

> On Jul 23, 2019, at 11:16 AM, Bob McGraw K4TAX  wrote:
> 
> Yes a calorimeter is the better way to measure power.   Not inexpensive 
> however. 
> 
> Bob, K4TAX
> 
> 
> Sent from my iPhone
> 
>> On Jul 23, 2019, at 10:07 AM, W2xj  wrote:
>> 
>> If you really want precision, use a water cooled load. Measure the flow rate 
>> and input and output temperature. You can precisely calculate power. 
>> 
>> Sent from my iPad
>> 
>>> On Jul 23, 2019, at 9:38 AM, Bob McGraw K4TAX  wrote:
>>> 
>>> Since power meter systems are calibrated at a known impedance {usually 50 
>>> ohms}, and they are voltage sensing devices, any deviation from the 
>>> calibration value will introduce an error in power indication.  It just 
>>> depends on how precise one prefers to be with power measurements.
>>> 
>>> 100 watts into 50 ohms is 70.71 volts
>>> 
>>> 100 watts into 55 ohms is 74.16 volts
>>> 
>>> 100 watts into 45 ohms is 67.08 volts
>>> 
>>> 73
>>> 
>>> Bob, K4TAX
>>> 
>>> 
 On 7/23/2019 5:43 AM, CUTTER DAVID via Elecraft wrote:
 I often wonder just how useful a precision dummy load really is in the 
 amateur service.  I picked up home brew dummy load at the club the other 
 day.  It measured 57ohms dc and comprises 4 wire-wound resistors attached 
 in a cluster across the end of the coax.  After lots of disparaging 
 remarks I put it on the VNA and it didn't look at all bad out to 30MHz: 
 nothing over 1.5:1 and no spikes or dips to indicate resonances. I'll have 
 to do it again and make a print-out for posterity.
 I've heard that salt water in a bucket works after a fashion.
 So the question is: how good do you need it to be?
 David G3UNA
 
 
> On 22 July 2019 at 23:58 "hawley, charles j jr"  
> wrote:
> 
> 
> Used Bird Attenuator is a good deal.
> 
> https://nm3e.com/AttenuatorSampler.htm
> 
> Then you’ll have a sample to plug into your counter or scope
> 
> Chuck Jack Hawley
> KE9UW
> 
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>>> 
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>> 
>> 
> 
> 
> 

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Re: [Elecraft] P3 Not Zeroed

[Bob McGraw K4TAX]

First make sure the radio is correct on all WWV frequencies.   I use CW mode 
and Auto Spot.  That will get to within 2 Hz or better. Adjust the Ref freq to 
calibrate. 

Then you can calibrate the P3 to the radio. 

No tuning or listening for zero beat required. 

Bob, K4TAX


Sent from my iPhone

> On Jul 23, 2019, at 9:54 AM, Kevin, N4TT  wrote:
> 
> Hi Jim:
> 
> I thought I had the right adjustment on the P3 but it seems global. I can't
> figure out why WWV can be spot on and then another signal off. I can't even
> be sure if it is the radio or the P3 (or me) at this point. I'll keep
> digging.
> 
> Kev
> 
> 
> 
>> On Tue, Jul 23, 2019 at 3:57 AM Jim Brown  wrote:
>> 
>> It's been a while since I looked at the manuals for my K3 and P3, but I
>> do recall that there are calibration procedures for both.
>> 
>> 73, Jim K9YC
>> 
>>> On 7/22/2019 9:28 PM, Kevin, N4TT wrote:
>>> I noticed my P3 doesn't seem to be zeroed with the K3s. When I tune in a
>> CW
>>> signal with a 600 Hz pitch the P3 is off by 71 Hz. Not much but, I
>>> expected  - zero.
>>> 
>>> In AM - WWV at 5 MHz the P3 seems spot on.
>> 
>> 
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Re: [Elecraft] Dummy Load recommendation

[Bob McGraw K4TAX]

Yes a calorimeter is the better way to measure power.   Not inexpensive 
however. 

Bob, K4TAX


Sent from my iPhone

> On Jul 23, 2019, at 10:07 AM, W2xj  wrote:
> 
> If you really want precision, use a water cooled load. Measure the flow rate 
> and input and output temperature. You can precisely calculate power. 
> 
> Sent from my iPad
> 
>> On Jul 23, 2019, at 9:38 AM, Bob McGraw K4TAX  wrote:
>> 
>> Since power meter systems are calibrated at a known impedance {usually 50 
>> ohms}, and they are voltage sensing devices, any deviation from the 
>> calibration value will introduce an error in power indication.  It just 
>> depends on how precise one prefers to be with power measurements.
>> 
>> 100 watts into 50 ohms is 70.71 volts
>> 
>> 100 watts into 55 ohms is 74.16 volts
>> 
>> 100 watts into 45 ohms is 67.08 volts
>> 
>> 73
>> 
>> Bob, K4TAX
>> 
>> 
>>> On 7/23/2019 5:43 AM, CUTTER DAVID via Elecraft wrote:
>>> I often wonder just how useful a precision dummy load really is in the 
>>> amateur service.  I picked up home brew dummy load at the club the other 
>>> day.  It measured 57ohms dc and comprises 4 wire-wound resistors attached 
>>> in a cluster across the end of the coax.  After lots of disparaging remarks 
>>> I put it on the VNA and it didn't look at all bad out to 30MHz: nothing 
>>> over 1.5:1 and no spikes or dips to indicate resonances. I'll have to do it 
>>> again and make a print-out for posterity.
>>> I've heard that salt water in a bucket works after a fashion.
>>> So the question is: how good do you need it to be?
>>> David G3UNA
>>> 
>>> 
 On 22 July 2019 at 23:58 "hawley, charles j jr"  
 wrote:
 
 
 Used Bird Attenuator is a good deal.
 
 https://nm3e.com/AttenuatorSampler.htm
 
 Then you’ll have a sample to plug into your counter or scope
 
 Chuck Jack Hawley
 KE9UW
 
>>> __
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>>> Please help support this email list: http://www.qsl.net/donate.html
>>> Message delivered to rmcg...@blomand.net
>> 
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> 
> 


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Re: [Elecraft] P3 Not Zeroed

[Kevin, N4TT]

Hi Jim:

I thought I had the right adjustment on the P3 but it seems global. I can't
figure out why WWV can be spot on and then another signal off. I can't even
be sure if it is the radio or the P3 (or me) at this point. I'll keep
digging.

Kev



On Tue, Jul 23, 2019 at 3:57 AM Jim Brown  wrote:

> It's been a while since I looked at the manuals for my K3 and P3, but I
> do recall that there are calibration procedures for both.
>
> 73, Jim K9YC
>
> On 7/22/2019 9:28 PM, Kevin, N4TT wrote:
> > I noticed my P3 doesn't seem to be zeroed with the K3s. When I tune in a
> CW
> > signal with a 600 Hz pitch the P3 is off by 71 Hz. Not much but, I
> > expected  - zero.
> >
> > In AM - WWV at 5 MHz the P3 seems spot on.
>
>
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Re: [Elecraft] K4 soundcard/CODEC

[Nr4c]

Probably not. There is 4 to 5 years between radios and I expect some 
advancement in this technology. 

Sent from my iPhone
...nr4c. bill


> On Jul 22, 2019, at 10:57 PM, Jim N7US  wrote:
> 
> I apologize if this has been asked before.
> 
> 
> 
> Is the soundcard/CODEC in the K4 the same as in the K3S?
> 
> 
> 
> Jim N7US
> 
> 
> 
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Re: [Elecraft] Dummy Load recommendation

[W2xj]

If you really want precision, use a water cooled load. Measure the flow rate 
and input and output temperature. You can precisely calculate power. 

Sent from my iPad

> On Jul 23, 2019, at 9:38 AM, Bob McGraw K4TAX  wrote:
> 
> Since power meter systems are calibrated at a known impedance {usually 50 
> ohms}, and they are voltage sensing devices, any deviation from the 
> calibration value will introduce an error in power indication.  It just 
> depends on how precise one prefers to be with power measurements.
> 
> 100 watts into 50 ohms is 70.71 volts
> 
> 100 watts into 55 ohms is 74.16 volts
> 
> 100 watts into 45 ohms is 67.08 volts
> 
> 73
> 
> Bob, K4TAX
> 
> 
>> On 7/23/2019 5:43 AM, CUTTER DAVID via Elecraft wrote:
>> I often wonder just how useful a precision dummy load really is in the 
>> amateur service.  I picked up home brew dummy load at the club the other 
>> day.  It measured 57ohms dc and comprises 4 wire-wound resistors attached in 
>> a cluster across the end of the coax.  After lots of disparaging remarks I 
>> put it on the VNA and it didn't look at all bad out to 30MHz: nothing over 
>> 1.5:1 and no spikes or dips to indicate resonances. I'll have to do it again 
>> and make a print-out for posterity.
>> I've heard that salt water in a bucket works after a fashion.
>> So the question is: how good do you need it to be?
>> David G3UNA
>> 
>> 
>>> On 22 July 2019 at 23:58 "hawley, charles j jr"  
>>> wrote:
>>> 
>>> 
>>> Used Bird Attenuator is a good deal.
>>> 
>>> https://nm3e.com/AttenuatorSampler.htm
>>> 
>>> Then you’ll have a sample to plug into your counter or scope
>>> 
>>> Chuck Jack Hawley
>>> KE9UW
>>> 
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Re: [Elecraft] Dummy Load recommendation

[Don Wilhelm]

David,

If your use of the dummy load is only to provide a load to the 
transmitter for things like a quick "does it work" check, then precision 
is not necessary.  Anything that presents an SWR of 1.5 or less would be 
adequate.


OTOH, if you want to do things like the TX Gain Calibration of the K3 or 
KX2/3, or do measurements with a 'scope (or other measuring device) 
across the dummy load, then better precision is required if one expects 
the results to be meaningful and accurate.


In other words, if your expectation of measurement accuracy is a range 
of +/-50%, then using a load with a 1.5 SWR is acceptable.  If your 
expectation requires an error of less than 10%, then more precision is 
required.  That goes for not only dummy loads, but any other measurement 
instrument.


Parallel non-reactive resistors in a can of mineral oil can be used 
effectively up to 200 watts in a quart can, while up to the legal limit 
can be obtained in a gallon can of oil (Heathkit Cantenna style).  Those 
can be easily homebrewed and the amount of precision depends on the 
resistors used and the care with construction.


73,
Don W3FPR

On 7/23/2019 6:43 AM, CUTTER DAVID via Elecraft wrote:

I often wonder just how useful a precision dummy load really is in the amateur 
service.  I picked up home brew dummy load at the club the other day.  It 
measured 57ohms dc and comprises 4 wire-wound resistors attached in a cluster 
across the end of the coax.  After lots of disparaging remarks I put it on the 
VNA and it didn't look at all bad out to 30MHz: nothing over 1.5:1 and no 
spikes or dips to indicate resonances. I'll have to do it again and make a 
print-out for posterity.

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[Elecraft] Dummy Load recommendation

[Ron Durie]

Very well stated, Bob.  
I like precision loads especially for calibrations and repairs.  
I am surprised at how many Hams that do not even own a Load; let alone a
good one.  
A good Load is one of the most important troubleshooting aids in the Ham
Shack.  73's 

Ron Durie
WB4OOA
Elecraft K-Line



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Re: [Elecraft] Dummy Load recommendation

[Bob McGraw K4TAX]

Since power meter systems are calibrated at a known impedance {usually 
50 ohms}, and they are voltage sensing devices, any deviation from the 
calibration value will introduce an error in power indication.  It just 
depends on how precise one prefers to be with power measurements.


100 watts into 50 ohms is 70.71 volts

100 watts into 55 ohms is 74.16 volts

100 watts into 45 ohms is 67.08 volts

73

Bob, K4TAX


On 7/23/2019 5:43 AM, CUTTER DAVID via Elecraft wrote:

I often wonder just how useful a precision dummy load really is in the amateur 
service.  I picked up home brew dummy load at the club the other day.  It 
measured 57ohms dc and comprises 4 wire-wound resistors attached in a cluster 
across the end of the coax.  After lots of disparaging remarks I put it on the 
VNA and it didn't look at all bad out to 30MHz: nothing over 1.5:1 and no 
spikes or dips to indicate resonances. I'll have to do it again and make a 
print-out for posterity.
I've heard that salt water in a bucket works after a fashion.
So the question is: how good do you need it to be?
David G3UNA



On 22 July 2019 at 23:58 "hawley, charles j jr"  wrote:


Used Bird Attenuator is a good deal.

https://nm3e.com/AttenuatorSampler.htm

Then you’ll have a sample to plug into your counter or scope

Chuck Jack Hawley
KE9UW


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Re: [Elecraft] Windows update clobbered me

[K8TE]

Actually Phil, I configure CCleaner to not delete my Chrome cookies.  There
are lots of options in CCleaner worth exploring to make it more effective
and less intrusive.

If we use a computer in our shacks, it pays to know it and the operating
system as best we can.  It's just a tool like a fine soldering station. 
Often, both aren't used to their full capabilities.  For example, Windows
(and many of its applications like Chrome browser, MS Office, Loggers) has a
large number of keyboard shortcuts.  I'm a big fan of those since they allow
me to keep my fingers on the home keys, a big plus in contesting or running
stations for a Special Event Station (SES).

73, Bill, K8TE



--
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Re: [Elecraft] Dummy Load recommendation

[CUTTER DAVID via Elecraft]

I often wonder just how useful a precision dummy load really is in the amateur 
service.  I picked up home brew dummy load at the club the other day.  It 
measured 57ohms dc and comprises 4 wire-wound resistors attached in a cluster 
across the end of the coax.  After lots of disparaging remarks I put it on the 
VNA and it didn't look at all bad out to 30MHz: nothing over 1.5:1 and no 
spikes or dips to indicate resonances. I'll have to do it again and make a 
print-out for posterity. 
I've heard that salt water in a bucket works after a fashion.  
So the question is: how good do you need it to be?
David G3UNA 


> On 22 July 2019 at 23:58 "hawley, charles j jr"  wrote:
> 
> 
> Used Bird Attenuator is a good deal.
> 
> https://nm3e.com/AttenuatorSampler.htm
> 
> Then you’ll have a sample to plug into your counter or scope
> 
> Chuck Jack Hawley
> KE9UW
>
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Re: [Elecraft] P3 Not Zeroed

[Jim Brown]

It's been a while since I looked at the manuals for my K3 and P3, but I 
do recall that there are calibration procedures for both.


73, Jim K9YC

On 7/22/2019 9:28 PM, Kevin, N4TT wrote:

I noticed my P3 doesn't seem to be zeroed with the K3s. When I tune in a CW
signal with a 600 Hz pitch the P3 is off by 71 Hz. Not much but, I
expected  - zero.

In AM - WWV at 5 MHz the P3 seems spot on.



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Re: [Elecraft] Feature Request: Shifting VFO

[Bill Frantz]

I think the P3 center mode has this feature.

73 Bill AE6JV

On 7/20/19 at 10:38 AM, kkinde...@gmail.com (Kevin, N4TT) wrote:

> Consider one of the settings for your computer mouse is shifting
> resolution. This allows you to move the mouse real fast to get from one end
> of three monitors to the other. And then, when you slow down, the mouse
> goes into micro-resolution mode and you can be very precise in your
> movements. This may be a Logitech feature.
> 
> I was thinking the same concept could be used for the VFO. I'm familiar
> with the Fine/Course and RATE buttons but I was thinking (danger Will
> Robinson) that it would be nice to quickly shift to the next RTTY signal
> and then automatically switch to the FINE selection based on how fast you
> turn the VFO.
---
Bill Frantz|The nice thing about standards| Periwinkle
(408)356-8506  |is there are so many to choose| 16345 Englewood Ave
www.pwpconsult.com |from.   - Andrew Tanenbaum| Los Gatos, CA 95032

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