[Elecraft] K2 Side tone not working

2009-11-30 Thread Dave Barr
The side tone on my K2 (sn 537) has stopped working... not a peep.  
Also, the spot function is not audible.I have checked the
 "St L" (set at 50) and run it all the way up...  no side tone.  CW is 
operating properly, internal keyer or externally.  Does anyone recognize 
this problem, or do I just go in and check voltage levels?

Thanks, and 73

Dave K2YG
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Re: [Elecraft] P3 vs Sub RX

2015-03-10 Thread Dave Barr
I worked K1N on RTTY using my K3 using the sub rx to find "holes". No 
P3, although a may get one.  The method I use is to run a second MMTTY 
window fed by the sub rx output on the audio right channel, an easy set 
up in MMTTY.  While it only gives a 3 or 4 khz spectrum, it is helpful, 
so I was able to find that "hole".  Oh, yeah, I was running one watt, so 
there was a hole.  So I guess I vote for the sub rx first.


Dave, K2YG

On 3/10/2015 7:31 PM, elecraft-requ...@mailman.qth.net wrote:

Message: 10
Date: Tue, 10 Mar 2015 12:26:24 -0600
From: "Don Butler"
To: "'Nick - VE3EY'", "'Rick WA6NHC'"

Cc: 'Elecraft'
Subject: Re: [Elecraft] (Mini)P3 v SubRX
Message-ID:<01d05b5f$b756e390$2604aab0$@comcast.net>
Content-Type: text/plain;   charset="us-ascii"

I find both the K3 subreceiver and P3 very helpful in cracking DX pileups.
Without the subreceiver it's really not that big of a deal to toggle back
and forth between VFOs to monitor the pileup, but it's still much better
when the subreceiver is available and turned on with a wide filter setting.
I find myself "watching" the pileup much more than "listening" to it
nowadays, so I'd definitely pick the panapter first if I had to choose one
option only.

I posted a link to a similar video a few weeks ago, but this 10 minute video
is different and shows how I was able to continuously find K1N's listening
frequency while he was working a 20+ KC wide pileup   and when he
started getting louder to me I fired up my amp and worked him with just a
few calls.  Take  a Look:

https://vimeo.com/119076467/settings

Don, N5LZ


-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Nick -
VE3EY
Sent: Tuesday, March 10, 2015 10:46 AM
To: Rick WA6NHC
Cc: Elecraft
Subject: Re: [Elecraft] (Mini)P3 v SubRX

// When I'm not traveling, I DX (sometimes I*am*  the DX).

On this topic, maybe I can hijack the thread but it still pertains the P3
functionality.

I also occasionally travel down to Caribbean and operate CQ WW from places.
I would love to have the pan-adapter handy when faced with pileups.  Here
are some possible benefits:

- You have a visual picture of how large your pile is and it makes it easier
to steer clear from congested areas.
- You have a visual picture of your own TX FQ.  You will know soon enough
once lids start causing trouble on your TX frequency so that evasive actions
can be taken.
- Sometimes there is another pileup going on below or above your frequency.
If the callers trying to work someone else overlap with your own,your rate
takes a dive as you find yourself answering folks who are actually not
calling you.

In my case, P3 is too big (volume-wise) and there is no space to fit it in
carry on suitcase along with K3, PSU, Cables, Laptop, Keyer etc.

By looking at parts list from P3 manual, perhaps we can significantly shrink
the depth of the unit by making the Top, Bottom and Side panels (E100362,
E100363, and E100361) shorter if Elecraft would be willing to manufacture
and provide such kit.  We always have an option to use the hacksaw but it
would not look pretty:-)

73,  Nick
ve3ey





On Mon, Mar 9, 2015 at 9:59 PM, Rick WA6NHC
wrote:


>You're preachin to da choir son.  Fine job though.
>
>K1N was awful for DQRM, lids and untrained idiots.  3G0ZC the next
>week wasn't quite as bad, nor as rare.  E30FB is rough here on the
>West Coast due to lack of signal strength, conditions and the same
>crowds.  You can't hear, what isn't there.
>
>I see that problem cause as twofold:  Lack of noobs seeking an Elmer
>for proper training NOT covered adequately in the classes or tests;
>Lack of folks willing to become an Elmer to guide the newcomers.
>That's WAY off topic for here.
>
>Putting in perspective and back on topic; the P3 was almost totally
>useless for K1N, except to watch and measure the height and width of
>the pileup (there WERE no holes to utilize in that pack).  What you
>said is very true, the subreceiver helped, about as much because of
>the reasons you stated too.  Together however, is still a deadly
>combination, by watching the (group of) signal(s) on the P3 that the
>DX is working, quickly tuning the receiver to the most likely being
>worked and confirming by ear, they allowed me to gain 13 Q's with K1N
>on a low dipole and some power (it's all in the DX pattern
>recognition, if they're not purposely avoiding a pattern).  The other
>operating style was simply work the edges of the pileup, don't be in the

middle.

>
>P3 and KRX3 in 'normal' DX collecting... fish:barrel.  They are the
>sole reason I have 250 'entities' in the log over the last couple
>years.  When I'm not traveling, I DX (sometimes I*am*  the DX).  Oh
>yes, the KPA500 helps, a LOT since I'm on a sole dipole.
>
>I don't see things improving in the ranks, so anyone looking at the
>purchase of the K Line should simply keep the budget open ended and
>collect everything as they can.  P3 first (plan on the SVGA card 

[Elecraft] K3 Switch feedback tones

2016-10-02 Thread Dave Barr
Is there any way to control the loudness of the K3 switch feedback 
tones, not just turn them on or off?


Dave, K2YG



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Re: [Elecraft] Elecraft Digest, Vol 117, Issue 19 Interfaces for K2

2014-01-14 Thread Dave Barr
For about a decade or more, I have been using a homebrew interface 
between my K2 and laptop that consists of three wires wrapped together 
and terminating at the mic connection, with transmit audio and ptt to 
the appropriate mic connector pins, and RX audio coming thru an unused 
pin (I think an up down pin or another not usually needed) with a rather 
easy mod involving the internal mic jumper plug, and one short wire to 
an audio source near the audio volume control on the K2.  The only 
additional parts needed are a very simple pull down transistor circuit 
in the ptt circuit and an 600/600 ohm isolation transformer with two rf 
bypass caps, and a simple two resistor transmit audio level pad.  This 
"interface" costs less than $15 and a few hours work.  With this set up, 
I have worked over 260 rtty countries at 5 or fewer watts with my K2 and 
MMTTY, RITTY (by K6STI-no longer supported) and N1MM sofytware. There is 
absolutely no need for any fancy interfaces, but of course you must be 
willing to disconnect your interface from the K2 mic connector if you 
want to work SSB.


73. Dave, K2YG
On 1/14/2014 12:00 PM, elecraft-requ...@mailman.qth.net wrote:

Message: 4
Date: Tue, 14 Jan 2014 09:07:09 -0500
From: Don Wilhelm
To: Vince Santis,elecraft@mailman.qth.net
Subject: Re: [Elecraft] K2 and Ten Tec  USB digital interface
Message-ID:<52d5448d.2030...@embarqmail.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Vince,

I can't say for certain because there is very little information on the
website - no schematic or wiring information.

Any interface that provides audio in and out and keying can be made to work.

One thing for certain is that you would have to make an adapter(s) for
the audio in and out and keying to connect to the K2 mic jack, headphone
jack and key jack (although PTT could be applied through the mic jack).

73,
Don W3FPR
On 1/14/2014 7:32 AM, Vince Santis wrote:

>Can the TT digital interface be used with the K2?
>
>Thanks,
>Vince Santis, N1VS
>


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Re: [Elecraft] # 5607 first contact QRP!

2014-02-06 Thread Dave Barr
QRP works!  Bottom line is that if you want a lot of DX contacts, you 
need at least a dipole.  With a K2 built in '99, a dipole and a 
tribander (bad qrp word) K2YG has worked 261 countries at 5 watts on 
rtty and 108 with 1 watt.  Many of these are on 40, 17 and 12 meters 
with only the dipole, such as VQ9 on 40 with 5w and VU on 12 with one 
watt.  CW is even easier, but SSB is tougher.  So, throw up a wire with 
open feed if possible, even indoors (with coax feed) if you can attach 
it to the house ridge pole, and avoid verticals and small antennas.   
Then, add patience and persistence.


73, Dave, K2YG


On 2/6/2014 12:02 AM, elecraft-requ...@mailman.qth.net wrote:

--

Message: 25
Date: Wed, 5 Feb 2014 18:11:58 -0800
From: EricJ
To:elecraft@mailman.qth.net
Subject: Re: [Elecraft] # 5607 first contact QRP!
Message-ID:
Content-Type: text/plain; charset="ISO-8859-1"; format=flowed

And that's an important point, Don. A poor antenna hooked to a 5 watt
rig is no different than a poor antenna hooked to a 100 watt rig...in
receive. Power sometimes gives you an advantage on transmit under
marginal conditions, but it does nothing on receive as you mention. Then
you run into the classic "can't work 'em if you can't hear them" barrier
no matter how much power you run.

I have three boatanchors (2NT, DX40 and Ranger) and they run around
50-65 watts INPUT. That's what 90% of hams ran in the 50s and 60s and
that's only an S unit or so better than my K1 or K2/10.

Anyway, I said what I wanted to say which is most of the argument
applies to any power level, not just QRP. Part 97 says run no more power
than necessary. QRP meets that criteria for the majority of operating.

Eric
KE6US

On 2/5/2014 4:23 PM, Don Wilhelm wrote:

>Yes, there are many QRPer's who also frown on beams and other
>efficient antennas, but I disagree with that philosophy.  Why 'shoot
>yourself in the foot' with a compromise antenna unless your physical
>conditions dictate that compromise as a necessity (HOA restrictions,
>portable operation, etc.)
>
>If you operate with 5 watts and an antenna with 3 dB gain, you will
>have the equivalent of a 10 watt signal, and if you can achieve an
>antenna with 10 dB gain, you have the equivalent of a 50 watt signal
>into a dipole. (yes, I know those are extremes).
>
>Much of the QRP work with compromise antennas is a problem on the
>receive side.  If you cannot hear them, you cannot work them.  So why
>handicap yourself with inefficient antennas.  Check QRPARCI - you will
>find no credits or deductions in their contests for antenna
>inefficiency.  Use the best antenna that you have for the task.
>
>QRP operation will increase your operating skills - listen, listen and
>listen, figure out the other stations habits, operate split if
>necessary, and call when you think your signal will be heard.
>
>73,
>Don W3FPR
>
>On 2/5/2014 6:52 PM, Stephen Roberts wrote:

>>You're right of course. It takes some time to get comfortable with
>>QRP and its limitations, and you're right, that it can be a source of
>>frustration for many new hams.  Your are also absolutely right that
>>when you ad a crappy antenna to the mix, it can be very frustrating
>>indeed. But that's the fun of learning and discovering all that is
>>ham radio.
>>
>>I started with an OHR 100a 40m rig and a homebrew magloop antenna set
>>up on a tripod in my kitchen. I was happy as a clam and simply didn't
>>know what I was missing and found plenty of QSO's to keep me occupied
>>while I figured out what it was all about. I had other ham friends
>>telling me that I was setting myself up for disappointment if I
>>didn't get at least a 100W radio, but I stuck it out and never felt
>>that I was missing much. I still feel that way, and I'm still having
>>fun.


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[Elecraft] Help setting up K3 w N1MM

2014-02-10 Thread Dave Barr
I am looking for advice in how to set up my K3 with N1MM incorporating 
rig control at least to the extent of having the radio control the 
logging frequency and mode shown in N1MM primarily for AFSK RTTY using 
just the Elecraft USB to serial adapter cable (in addition to the audio 
in/out connections to the computer sound card).I have had no problem 
setting up for Digital and CW without any K3 to N1MM control interaction 
other than ptt and cw keying.  The K3 Utility works fine.  The digital 
engine is MMTTY. Page 84 of the KE7X K3 manual suggests that what I want 
to do is possible.   Help!


Dave, K2YG
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[Elecraft] K3 RF Output Level Variation

2014-02-16 Thread Dave Barr
K3-100 sn 7901 is working great;  I am still in the learning cycle, but 
I have noticed an interesting and slightly disturbing  thing about the 
rf output levels.


During measurement with an external (HP) power meter, the power output 
increases rapidly for about 10 seconds and then slows and eventually 
settles, with small variations from every few seconds afterwards.  For 
example, to achieve a 5 watt reading on the power meter, the initial 
setting on the K3 is 4.3, and within 10 seconds must be reduced to 3.9 
to maintain 5 watts output.  (Watt meter calibration has not yet been 
performed.) This occurs to similar extents at all power levels, i.e., to 
maintain an even power level, the K3 setting must be reduced over the 
first 10 seconds or so.   My K2 does much the same thing.  Is there an 
explanation for this behavior?


Dave, K2YG
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Re: [Elecraft] [K3] - Digital Modes Interface - Working Split

2014-02-19 Thread Dave Barr


On 2/19/2014 12:00 PM, elecraft-requ...@mailman.qth.net wrote:

When working split, is there any reason why I have to be
>able to decode both the DX (or split station [i.e. W1AW/x]) and the
>calling station?
There is plenty of reason to be able to decode both the dx station and 
the callers.  It is necessary to locate the QRG of the station currently 
working the DX in the pileup.  The K3 with a sub-receiver makes it 
easy.  I use N1MM set up with MMTTY under the C/ and another MMTTY set 
up under /Program Files.  Each iteration of MMTTY can be set to it's own 
audio channel, i.e., left or right, under options>set up>misc.   Also, 
if you have a decent audio card in your computer, you don't need any 
interface, just a couple of 3.5 mm stereo patch cords plus a PPT 
connection (serial cable or USB adapter-Elecraft's works great) for full 
functioning two frequency RTTY.  You can also work one digital format 
while monitoring another, for example working JT65/9 while monitoring 
RTTY activity.


73

Dave, K2YG
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Re: [Elecraft] K2 on digital modes.

2014-02-21 Thread Dave Barr

Hi Dennis

The is a another consideration for digital modes if you are planning to 
work RTTY as well as other digital modes.  In setting up my K2 a long 
time ago, I found much better results with narrow filtering could be 
achieved by using an audio frequency pair (mark and space tones) lower 
than the 2125-2295 standard suggested for most RTTY work.  Using MMTTY, 
I chose 915 for the mark frequency mark, although using 1275 or 1445 
should be fine.  With the high tones I was not able to get flat band 
pass shaping that was similar between the 15 meter-and-up and the 20 
meters-and-down conversion arrangements that the K2 has.   Some will 
warn you not to use low tones because of opposite sideband leak, but I 
have never had that problem, even when checking with a second RX in the 
shack.  I aligned my narrowest filter as low as 40 hz (nominally- it's 
actually much wider than that) and it worked well in crowded RTTY 
contest conditions.  I ended up with nominal filter widths of 40, 75 and 
135 hz.  For working PSK and JT65 and 9 you will probably want another 
filter set up as wide as possible.


73, Dave, K2YG
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Re: [Elecraft] QRP with the KX3

2014-03-04 Thread Dave Barr

Can't resist the brag...

My best qrp is VK2KM on 20 meter RTTY Long Path with one watt (he has an 
amazing yagi), but the prize so far should go to WA2DKJ who worked C6 
(1100+ miles from Northern NJ) on CW with his K2 at  1 milliwatt, using 
calibrated attenuators and measured with an HP power meter.  That's 
better than a million miles per watt.  The qso was not easy, but it was 
completed.


Dave, K2YG
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Re: [Elecraft] Digimodes, what am I missing?

2014-03-21 Thread Dave Barr
Denis, you may be missing the opportunity to start unique conversations 
with hams you run across in the digital sub-bands. The worst that can 
happen is that they will just give you a look at their macros.  The best 
is that they may start typing back.  There are a number of operators who 
chew the rag from time to time on 20 meter rtty,  and I'm sure it occurs 
sometimes on other modes and bands, except for the JT modes.


Our local club holds a digital net every other Monday evening on ten 
meters around 28071, in several alternating modes, including psk, rtty, 
hellschreiber, and more as time goes on.  No macros are used. There is 
no flaming, and we sometimes learn something new.  It's a great way to 
help digital newbies with on the air experience.   The band was chosen 
for the best local propagation, but other bands are tried from time to time.


So, tickle those greenkeys; someone will respond.

73, Dave, K2YG
On 3/21/2014 12:00 PM, elecraft-requ...@mailman.qth.net wrote:

Date: Fri, 21 Mar 2014 14:13:28 +0100
From: F5vjc
To: K5HM
Cc: Elecraft Reflector
Subject: Re: [Elecraft] Digimodes what am I missing?
Message-ID:

Content-Type: text/plain; charset=ISO-8859-1

Lots of very interesting and wise responses, thank you all.

It seems I am not alone:)

73, Denis F5VJC


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Re: [Elecraft] K3 rtty decode vs: computer decode

2014-03-21 Thread Dave Barr


More like the rumble seat.

Dave, K2YG

Original message:
From: Jim Hoge
To: Elecraft Reflector
Subject: [Elecraft] K3 rtty decode vs: computer decode

I have played just a bit with the rtty via cw function of the K3 and am curious 
if my casual observations match those of others. It appears that the K3 onboard 
decoder takes a back seat in rtty decode ability to a radio/computer/mtty 
combination. Agree/disagree/thoughts?

73,
Jim W5QM


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[Elecraft] Data Sub-mode switching on K3

2014-04-02 Thread Dave Barr
Sometimes I want to monitor RTTY while I am operating JT65/9 on my K3 
(sn7901) which has the sub-rx.  The only way I have figured out to do 
this is to set both vfo A and B with [A>B] to data sub-mode AFSK A (LSB) 
for RTTY, and then switch vfo A to DATA A (USB) for JT.  If at anytime I 
try to use the [B Set] function, to change band width for example, the 
AFSK A (LSB) mode in vfo B changes to DATA A (USB).  If I use the A/B 
function both vfos become set to the sub-mode that was originally 
selected for vfo A.


Setting split mode this way seems rather cumbersome, just as is the 
inability to use [Freq Ent] with [B Set].  Am I missing something, or is 
this just the way things are, and something to suggest for future software.


Dave, K2YG
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[Elecraft] Subject: Re: Solving the heat problem in the KX3

2014-04-15 Thread Dave Barr


On 4/13/2014 11:50 PM,

Message: 4
Date: Sun, 13 Apr 2014 12:49:28 -0700
From: Jim Bennett
To: Elecraft Reflector Reflector
Subject: Re: [Elecraft] Solving the heat problem in the KX3
. Almost everyone running PSK31 is doing so with 15 - 35 watts, so a 3-4 
watt signal isn't going to make a lot of QSO's. I did, but they were few and 
far between. Even worse on the JT modes...
 Don't disparage running 3 or 4 watts, or even less.  Over the last 
decade, my K2 at 5 watts has worked 261 DX entities and at 1 watt 113, 
all digital, mostly rtty.   Yes a tribander helped, but many of these 
qsos were on 40, 30, 17 and 12 meters with wire antennas.  At one watt 
in CW DX contests it is possible to come within a few entities of true 
DXCC in 30 hours, and at 5 watts to go well over 100.  Working in 
contests will help the KX3 to run cooler because of the very short 
transmissions.  On JT65 or 9 try working split. Bottom line: be patient 
and expect to be at the end of the line.


73, Dave, K2YG
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Re: [Elecraft] Going 2014 with my K2

2014-04-25 Thread Dave Barr




Date: Wed, 23 Apr 2014 21:30:55 -0400
From: PHILIP GRAITCER
Subject: [Elecraft] Going 2014 with my K2


I love my five year old K2, and although I have a K3, I?d like to keep using 
the K2 for the field and digital. ...

2. Digital modes. Don has a nice solution to digital modes on the K2, but are 
there updates? What are others doing to go digital with their K2s?

Thanks,
Phil

Philip L. Graitcer, W3HZZ

Hi Phil

For many years my K2 (sn 537) has performed admirably (over 250 digital 
entities at 5 watts and over 100 at one watt) on RTTY, PSK and JT65/9 as 
well as a few other digi modes with a very basic set up: Direct 
connection from K2 to a laptop with small transformer isolation, bypass 
caps and ptt circuits built into the patch cords, all connecting at the 
K2 mic connector after running RX audio to an unused mic connector pin.  
The rx audio level is NOT constant, but I have never found this to be a 
problem.  Software now is MMTTY (with N1MM for contests), WSJTX2 and 
Digipan, etc.  On RTTY I use somewhat lower than the standard 2125-2195 
hz tones to allow for the K2 bandpass.  My K2 has not been updated for 
at least 6 or 7 years. Schematics for the audio isolation and ptt 
circuits are available on AA5AU's website.


73, Dave, K2YG
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Re: [Elecraft] Signal analysis with the P3

2014-04-29 Thread Dave Barr


On 4/29/2014 3:52 PM, elecraft-requ...@mailman.qth.net wrote:

Message: 12
Date: Tue, 29 Apr 2014 09:32:33 -0700
From: Fred Jensen
To:elecraft@mailman.qth.net
Subject: Re: [Elecraft] Signal analysis with the P3
  
...  I recorded myself

using his velocity mic [the large iconic RCA which had a prismatic
shape] on an Ampex 350 at varying distances.


Fred K6DGW
The large iconic broadcast mic was probably the DX-44.  RCA's next 
iconic mic was the DX-77, which resembled a large pharmaceutical 
capsule, hemispherical on both ends and mounted in the middle. Until a 
few years ago, these sometimes appeared on late night tv show host's 
desks, probably just for their iconicness (sic).


Dave, K2YG
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[Elecraft] Contesting vs Not (re: QRO CW)

2014-04-30 Thread Dave Barr
Amateur radio operators share interest and do not share interest in the 
various aspects of this wonderful avocation.  Tolerance is something we 
all should share.  But, being a rtty contest participant, I must note my 
observation that during rtty contests, at least on 20, 15 and 10 meters 
, most contesters try to avoid the psk segments, and somewhat the JT65/9 
area (perhaps for the latter not so effectively because the remarkably 
effective low level signals may not be heard).  Remember that we only 
note the interference of those who are interfering, not the vast 
majority who do care about not interfering.   I have never seen anyone 
type "use the warc bands".


Dave, K2YG
On 4/30/2014 12:18 PM, elecraft-requ...@mailman.qth.net wrote:

Message: 29
Date: Wed, 30 Apr 2014 09:18:51 -0700 (PDT)
From: Harry Yingst via Elecraft
Cc:"elecraft@mailman.qth.net"  
Subject: Re: [Elecraft] QRQ CW
Message-ID:
<1398874731.19289.yahoomail...@web125904.mail.ne1.yahoo.com>
Content-Type: text/plain; charset=iso-8859-1

I have to fully agree, personally I have never seen the point of contesting, it 
all seems pretty pointless.

In nearly every contest, I see the same thing contesters with little regard for 
other Amateurs.

I like to run JT65 and SSTV and on on the CW and RTTY contest the JT65 
Frequencies?are?Full
with?CW or RTTY?and on the SSB contest the SSTV frequencies are full SSB voice 
contesters.

And the typical response from contesters are "Use the WARC Bands".

I guess some must have a need to do something to make themselves feel special.


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[Elecraft] K3 Filters for digital work

2013-11-27 Thread Dave Barr
Which two of the 200/250/400 and 500 hz filters are best for digital 
use, primarily RTTY, both contests and dx.  I understand that for JT-65 
and PSK the standard ssb filter, or even the AM filter is useable.  I am 
concerned that the 200 hz might be too narrow for RTTY.  I work some CW 
but almost no ssb.


73, Dave, K2YG
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[Elecraft] Digipan freezes K3 configuration

2014-08-10 Thread Dave Barr
If I open Digipan while my K3 is on, and then activate "configuration" 
on the K3, the config menu selection and change action freeze.  The only 
thing I need to change is the line out level, but I can't do it while 
digipan is running.   Any hints?


Dave, K2YG
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[Elecraft] K3 AFSK TX Filter

2014-12-04 Thread Dave Barr


I have heard that the configuration of AFSK TX - FIL ON/FIL OFF affects 
afsk transmitted by feeding computer sound card generated afsk audio 
tones.  The entry in the manual seems to indicate the filter is only 
active on afsk generated by the K3 internal afsk capability.Which is 
correct?  (I think I already know.)


Dave, K2YG
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Re: [Elecraft] Elecraft Digest, Vol 204, Issue 12

2021-04-22 Thread Dave Barr

K3/K3S Last Chance for adding modules and upgrades ordering.

Is the KXV3B the complete IF and VHF interface?,  i.e., is it what is 
needed to use the P3 for a K3  that never had any IF/VHF interface at all?


Dave, K2YG


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[Elecraft] K4 or K4D

2021-11-05 Thread Dave Barr
I operate from a 50 by 115 foot lot using a tribander and two open wire 
fed dipoles.  I use a K3 with the auto antenna tuner, but no 
panadapter.  Primary interest is contesting (usually qrp and S&P) and DX 
chasing.  I never operate 2R in contests. There can be fairly high rf 
noise levels in the neighborhood, say S3 to S6, but not always.


My question is this:  Does the K4D have a real advantage over the base 
K4 for me.


Thanks for your opinions.

Dave, K2YG

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