I apologise to all for the bandwidth I am taking up, but I have often found it
does help to write things down.
I have just tried SSB I can see the signal on the Winradio and hooking up the
xvtr, I now have output.
The problem may be , under the CW letters on the right hand side of the screen
Ross I assume you are referring to a K3. The T means you have CW text
decode turned on. It will not stop you sending CW.
73 Dave, G4AON
K3/100 #80
---
I apologise to all for the bandwidth I am taking up, but I have often
found it does help to write things down.
I
Julian, G4ILO wrote:
transceiver. An SDR is basically not a lot different from a direct
...can be not a lot different from...
conversion receiver which QRPers habitually knock up in an hour or two using
parts from their junk box. The computer sound card and software does most of
It can
You will only get power out of the transverter port in transverter mode. I
assume you have that set up and have done the mW calibration in the setup?
Mike
--
View this message in context:
http://n2.nabble.com/Transverter-use-tp1505297p1505589.html
Sent from the Elecraft mailing list archive at
Documentation for the speaker mod says RFC47 is 100uH. However,
the circuit diagram is marked 10uH.
73
Stewart G3RXQ
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It looks very good, but the Gotcha is that it costs EURO 800 or $1040.00
including tax at the dealer here in Germany. As near as I can tell that's
double the cost of the K3 2nd receiver.
Vy 73, Bob DJ0MBC/WU5T
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I'd agree that fractional S units could be useful, a ratio of 2:1 being
often unhelpful. The suggested workarounds look good; one hang an old RF
voltmeter on the IF. But how elaborate do we want to get?
Anyway, here's a verse, Roger Copy, I wrote and sent to my club's
bulletin in 2003:
Roger
Check the circuit diagram. If they are using the same concept as in my ICOM
IC-2KL, then the amp has absolutely no protection without ALC.
Vy 73, Bob DJ0MBC/WU5T
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Hi Everyone,
The original value of the RFC47 in the K3 schematic is 10 uh.
Could someone please post or forward to me the value of the the new
RFC47 contained in the mod kit from Elecraft?
73 de N1LQ-Dave
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And the DigiKey P/N for the new RFC is...
M8290-ND 5800-101-RC
Paul, W9AC
- Original Message -
From: David and Dianne on Comcast [EMAIL PROTECTED]
To: elecraft@mailman.qth.net
Sent: Sunday, November 16, 2008 7:29 AM
Subject: [Elecraft] K3 - RFC47
Hi Everyone,
The original
Could someone please post or forward to me the value of the the new RFC47
contained in the mod kit from Elecraft? 73 de N1LQ-Dave
Dave,
The new RFC can be obtained from Mouser. It is indeed a 100uH Miller
choke:
Mouser P/N 542-5800-101-RC
Paul, W9AC
Probably the same value just heavier wire to reduce the voltage drop at
higher volume levels.
Randy
K8RDD
- Original Message -
From: David and Dianne on Comcast [EMAIL PROTECTED]
To: elecraft@mailman.qth.net
Sent: Sunday, November 16, 2008 7:29 AM
Subject: [Elecraft] K3 - RFC47
Hi
I asked the Elecraft service technician this question during a
troubleshooting session on the phone last week, and he told me the built-in
preamp has 10 dB gain. That's approximately two S units. My listening
experience on 160 meters with a preamp with 17 dB gain suggests that 10 dB
is about
I have just successfully loaded latest beta firmware and now the K3
will not trip the relay in the ameritron as it had before. ihave the
same key out connection that was untouched but maybe i need to
reconfig something?
73
de
todd
WB2ZAB
___
for what it may be worth...
For my pair-of-K2's in SO2R, I have routed the audio in such a way that I have
a balance control with the audio from the two radios. I call it a mixing
control. I find that optimum is achieved when the full strength audio is in
one ear, and that same audio is
G'day,
Never mind the part numbers, what about the results?
Regards,
Mike VP8NO
- Original Message -
From: Randy Downs [EMAIL PROTECTED]
To: elecraft@mailman.qth.net
Sent: Sunday, November 16, 2008 10:23 AM
Subject: Re: [Elecraft] K3 - RFC47
| Probably the same value just heavier
I don't think it's an error. Inspection of the photographs in the
Elecraft K3 AF Stage Upgrade Instructions reveals value code
brown-black-black which is 10mH. The marking on the new part appears
to be 101 which I read as 100mH.
So it's just a recent change not reflected in the published
If you must pollute the audio from one receiver with audio
from the other receiver, add a 5 to 10K pot between the tip
and the ring of your headphones and adjust it for the level
of pollution you need.
There is no need for Wayne (or probably Lyle) to design
crosstalk into the DSP process.
According to the schematic, the preamp gain is 11 dB. Roughly 2
S-units, which agrees with my experience when using it.
Bob NW8L
On Sat, Nov 15, 2008 at 9:54 PM, Fred Jensen [EMAIL PROTECTED] wrote:
Can someone tell me how much gain [like in S units] I should see from the
preamp? This will
Joe,
Your comment strikes me as unnecessarily negative. (Pollute? Crosstalk?) I
thought Fred's suggestion, coming as it does from a very experienced CW
contester, makes a lot of sense.
73,
Jim W8ZR
-Original Message-
From: [EMAIL PROTECTED] [mailto:elecraft-
[EMAIL PROTECTED] On
I am going to order, factory assembled:
3/100F
KAT3F
KTCX03-1
KUS
1.0
2.8
6
Please advise if this is what you would recommend or what would you take out
and replace. Based on user experience. will operate all modes including
PSK. I read many comments on the reflector on what filters to have
Whoops forgot to add KRK3
I am going to order, factory assembled:
3/100F
KAT3F
KTCX03-1
KUS
1.0
2.8
6
Please advise if this is what you would recommend or what would you take out
and replace. Based on user experience. will operate all modes including
PSK. I read many comments on the
Well spotted Bob. The documentation always takes time to catch up.
73
Stewart G3RXQ
On Sun, 16 Nov 2008 10:03:53 -0700, Bob Cunnings wrote:
I don't think it's an error. Inspection of the photographs in
the
Elecraft K3 AF Stage Upgrade Instructions reveals value code
brown-black-black which is
Phil, I ordered similar parts but as a kit (not the KRX3 second
receiver). I am sure there will be lots of suggestions, but here are mine!
(a) The K3 takes around 5 hours to assemble for the 10 Watt version and
another hour for the 100W PA. Whether to opt for the factory assembled
version is a
I find pollution of the opposite receiver (unusual way of describing
it) to be very beneficial when listening to a dx station and the pileup.
Strange as it may seem, it really helps me separate the dx station from
the callers.
73
Tim
NZ8J
-Original Message-
From: [EMAIL PROTECTED]
Hi,
According to http://www.elecraft.com/elecraft_shipping_status.htm:
The KDVR3 has been released to production and
should be shipping in the next 4-5 weeks.
(Mid-Late November.)
Now that we have reached Mid-November, is there any news when and if the
KDVR3 will start shipping?
I would
Mixing BOTH receivers into BOTH ears is not the same and is simply
summing the noise, effectively erasing the advantage of the DX operating
a split frequency!
I can't speak for SO2R contest operation but I've been using a dual
receiver setup for DXing for many years. I initially used separate
All,
Cross-over audio between the Main and Sub receiver is part of the menu
in a FT1000MP from 1996. (as a lot of you people probably know)
You can choose it in the menu how you want the audio: seperate,
mono-mixed or bit of stereo cross-over.
Absolutely wonderful.
There have been several other
We had a very busy net this week with four new stations.
Main topics this week were:
The recent AF mod to the K3 and where to obtain RF chokes in the UK
(Farnell 1635-800 - not axial or Rapid Electronics 88-2882) We've not
measured the space to see if they fit, but are worth considering.
W0CP wrote:
I've been disappointed with the audio output from my Heil proset
headphones. I've got other headphones around that are more sensitive, but
I like boom mic headphones.
That's very strange. I have two original Heil Pro-Sets (not the Pro-Set
Plus) which must be ~20 years old.
My Heil ProSet is 200 ohms and my max AF Gain is also 9-10 o'clock like Bill.
Make sure you have the config menu setting for AF Gain set to HI
73,
Barry N1EU
Bill W4ZV wrote:
W0CP wrote:
I've been disappointed with the audio output from my Heil proset
headphones. I've got other
Bob DeHaney wrote:
It looks very good, but the Gotcha is that it costs EURO 800 or $1040.00
including tax at the dealer here in Germany. As near as I can tell that's
double the cost of the K3 2nd receiver.
Also be aware that Blocking Dynamic Range (BDR) for the Perseus is
relatively
I'm just in the process of selecting a log program.
For that reason I was testing HRD to communicate with my K3.
I got it working (at the highest speed) through the (K)USB device (from
Prolific). But it's awful slow.
When changing the VFO-freq, it might take more then a minute for HRD to
I do not want to bring up the pro's and con's of Farnsworth CW (discussed in
many many posts in the elecraft forum, but not specifically in the K3 area).
I would just mention that this is a pretty standard technique on EME, to
deal with libration fading.
I was quite frustated to have to send by
Hi,
Sounds like a bad USB = serial driver? What's the operating system, serial
COM device etc.?
HRD K3 should be *very* fast.
Simon Brown, HB9DRV
www.ham-radio-deluxe.com
- Original Message -
From: Evert Bakker (PA2KW)
When changing the VFO-freq, it might take more then a
Jim,
Unless one is using diversity with phase locked signals, adding
the uncorrelated noise from one receiver to the signal from the
other receiver reduces the overall s/n. While you may think my
use of the term pollution is unnecessarily negative, it is an
accurate description.
Why wouldn't you just QSZ? That's the time-tested method of getting Morse
through during weak/fading sig cdx.
Ron AC7AC
-Original Message-
I do not want to bring up the pro's and con's of Farnsworth CW (discussed in
many many posts in the elecraft forum, but not specifically in the K3
Time for me to point to my favorite treatise on crimping vs soldering:
http://www.dimebank.com/misc/soldered_connections.html
(These days, I crimp, solder the lug end but don't let the solder
flow all the way to the wire end, and use heat shrink to prevent
flexing. If there is any chance it will
You might have your friend check out the HF SuperPacker Pro. I think
Virgil K5OOR is going to be doing a run of these in January.
I think Virgil's doing a great job bringing these projects and kits out,
but ... I enjoyed building a HFPacker amp, but didn't keep it long.
I found that it was
On Nov 16, 2008, at 1:52 PM, Joe Subich, W4TV wrote:
Assuming equal volume settings and equal bandwidths in the two
receivers, the S/N will degrade by 6 dB (twice the noise voltage).
Unless the noise is correlated, the probability density function from
summing two random variables causes
Evert,
That is strange. Unless the computer is loaded down with other chores,
HRD normally updates very quickly. You may want to check for 'gremlins'
in your computer, or other things that are keeping the CPU busy.
73,
Don W3FPR
Evert Bakker (PA2KW) wrote:
I’m just in the process of
Evening,
It arrived Friday, opened the box, and nearly died of fright looking
at all the little (and not so little packages). Weather wasn't great
over the weekend, so I've just finished building it.
As my first large Kit, I thought it the instructions were quite
good. However i'm stuck
Barry N1EU wrote:
My Heil ProSet is 200 ohms and my max AF Gain is also 9-10 o'clock like
Bill. Make sure you have the config menu setting for AF Gain set to HI
Just FYI my AF GAIN is set to LO, and I still have plenty of gain. I'm not
sure about the actual impedance of my Heils but
Why wouldn't you just QSZ? That's the time-tested method of getting Morse
through during weak/fading sig cdx. unquote
Believe me, repetition of the call signs is done in the extreme in EME.
Each time, the listener tries to keep track of what he *thinks* he heard and
eventually builds up a best
From my perspective of 20+ years of doing this, I stand firmly by my
statement that having the weak, noisy DX in the middle of my head
(both ears) makes it easier for me to copy in conjunction with the
pileup noise than copying with the DX out to the left with the pileup
noise to the right.
Ken_ke2n wrote:
So you send around 15 WPM, trying to get a whole character through
between fades. It becomes important to know if you have heard two
characters, or one with a hole in the middle. Hence the use of exaggerated
character spacing (a.k.a. Farnsworth).
That's an interesting
Hi,
I'm looking for a good K1 or K2 with 20m and 40m and an internal tuner. Please
repond off list.
72 de Scott/n7net/qrp
FISTS 8879
SKCC 1964
CTC 1.945
Wireless Pioneers 5706-TA
FPQRP 2446
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Ken_ke2n wrote:
I do not want to bring up the pro's and con's of Farnsworth CW (discussed in
many many posts in the elecraft forum, but not specifically in the K3 area).
I would just mention that this is a pretty standard technique on EME, to
deal with libration fading.
I was quite frustated
Joe Subich, W4TV wrote:
The K3 receivers are better isolated that other dual receiver
transceivers. It would be a shame to degrade S/N by adding a
mix control when it is relatively easy to do so externally or
those who don't mind the hit in S/N.
I just tested an experimental feature (I
That feature would be desireable for me... --... ...-- Dale - WC7S in Wy Date:
Sun, 16 Nov 2008 15:57:19 -0800 From: [EMAIL PROTECTED] To: [EMAIL
PROTECTED] Subject: Re: [Elecraft] K3: listening to both rcvrs CC:
elecraft@mailman.qth.net Joe Subich, W4TV wrote: The K3 receivers are
better
So the reduction in SNR (assuming equal noise power) is
3.01 dB, not 6 dB.
That's the best case if the noise power is equal. If the
other receiver has higher noise power (wider bandwidth,
more interfering signals, etc.) the S/N reduction is greater.
Even 3 dB reduction in S/N is a big hit
I would assume if one didn't want to use the new features ( if they
become a reality) you wouldn't have to. I can't imagine it would be an
situation that would eliminate the current functionality in favor of
something different. Seems like it should please everyone if both
options are available.
Option 3 is NOT yet implemented in the firmware. You'll need to use Option 1
or 2.
Al
WB6HPF
John Ronan wrote:
Evening,
It arrived Friday, opened the box, and nearly died of fright looking
at all the little (and not so little packages). Weather wasn't great
over the weekend, so
I don't dispute the idea that adding uncorrelated noise degrades the s/n
ratio. However, Fred's suggestion, as I understand it, pertained to
contesting, not digging a weak DX signal out of the background noise.
Typically, in a contest the problem is QRM from many other stations, with
the desired
On Fri, Nov 14, 2008 at 2:22 PM, [EMAIL PROTECTED] wrote:
I can see that this question has been asked in the past, but appears not to
have been answered. Can Elecraft share, assuming it has one, its list of
Mouser part numbers for the K2 and its options?
I believe Elecraft support will
well - most built-in keyers have some way to adjust the sending -
for example a weight control seems to be the very least that you find on
almost every transceiver that features a keyer
and
this is a Wish List, after all
;-)
- Original Message -
From: Julian, G4ILO (via Nabble)
http://www.telepostinc.com/LP-PAN.html
Includes full hardware setup.
1. E-MU0202 USB external soundcard
2. Factory assembled LP-Pan
3. Connecting USB, audio, IF, and power cables.
You download the free PowerSDR and Ham Radio Deluxe. This sound card is the
LP-Pan suggested full feature card
the earlier talk about the K3 S meter got me to thinking about a problem
I wanted to address.
I wanted to use the S meter to track small changes in level. My IC-746
PRO has twice the segments of my K3 but that was not enough either. The
K3 S meter is great on the air as I never give anyone a
Looking to buy a late serial number Elecraft K3. Options a plus,
especially the second receiver. If you've tried a K3 and found you may
want to try something else, let me know what you have; serial number,
what the physical and electrical condition is, what options are
installed and your best
NAQCC Sprint Wednesday night!
This coming Wednesday evening will be the monthly NAQCC Sprint for November,
2008.
I will refer you to the proper URL:
http://www.arm-tek.net/~yoel/sprint200811.html
There you will find all the details as to time, frequencies and also a special
prize.
This
I was hoping to have the pleasure of building the K1 but my eyesight has
diminished to where it is extremely difficult to read the small parts and the
board lettering.
I would like to hire someone who is experienced at building the K1's to
assemble the kit for me so I can at least have
Good Evening,
The twenty meter net had some QSB but the forty meter net had QRN, QSB, and
it moved rapidly. As you can see by the lists the locals were the only ones I
heard except for K4BEH who disappeared into the darkness only moments after he
was heard. Kent, K9ZTV, was not strong on
Includes full hardware setup.
1. E-MU0202 USB external soundcard
2. Factory assembled LP-Pan
3. Connecting USB, audio, IF, and power cables.
You download the free PowerSDR and Ham Radio Deluxe. This sound card is the
LP-Pan suggested full feature card with better than 160 khz display,
allows
Those high priced splitter units ($50) include box and BNC connectors.
If you do not want to build from stratch, try this for $14.20 :
http://www.minicircuits.com/pdfs/PSC-2-1.pdf
In Europe this is available at Funkamateur for 12 Euros:
http://www.box73.de/catalog/
Look for Bauelemente - Sonstige
Dave G4AON wrote:
Members of the RSGB may wish to sneak a preview of the December
RadCom article on SDR where the authors compare a K3 with a HPSDR
Mercury receiver and explain why the SDR sounds better than the K3
(noise through a crystal filter causing phase changes).
I've read the article
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