Tom,
I saw your post in Feb. Did you resolve your issue?
De Ben W4SC
Sent from Mail for Windows 10
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Post:
It occurred to me that might be the case after I sent the message. I'm a
die-hard contester and have the tendency to view things through that
filter. It's easy enough to simply re-tune the receiver when necessary
to return to your transmit frequency, pretty much exactly like you'd
have to do
Yes, you have to lock the VFOs. That is a menu only (or macro). What I have
done is to program a macro into PF1 that does A->B, lock VFO, Turn on
Diversity. RIT works fine, both RX track.
On Thu, Feb 25, 2021, 20:16 Tom Doligalski via Elecraft <
elecraft@mailman.qth.net> wrote:
> I’ve
I don't know which contest software package you may be using. If you're
running N1MM+ Logger the solution to this dilemma is to equalize the A
and B VFOs at the beginning of the run and then turn on Split mode. Then
your transmitter will be locked to the VFO B frequency and the receiver
can be
I’ve rediscovered Diversity RX on my K3, and have a question.
Scenario: I’m working folks on 40M CW with a bit of QSB. Diversity is on, and
things are working great.
Suddenly I receive an off-frequency call, say up a couple hundred Hz. Normally
no trouble, as I just use my trusty RIT control
Jim,
With BOTH 'Split' and 'Diversity' engaged, you will only be able to listen
to VFO-A, although VBO-B WILL be your transmit frequency. In other words,
you will be listening to the DX on VFO-A with full benefits of Diversity.
However, you can press and hold the "REV" button on the K3 which will
Thanks!
Jim ab3cv
On Mon, Aug 3, 2020 at 5:30 PM Victor Rosenthal 4X6GP
wrote:
> Yes. When you use diversity you are actually not using the VFO B
> synthesizer for the second rx. They are both fed from synth A. VFO B
> remains available for transmitting.
> I do this all the time.
>
> 73,
>
Yes. When you use diversity you are actually not using the VFO B
synthesizer for the second rx. They are both fed from synth A. VFO B
remains available for transmitting.
I do this all the time.
73,
Victor, 4X6GP
Rehovot, Israel
Formerly K2VCO
CWops no. 5
http://www.qsl.net/k2vco/
.
On
When using diversity what happens to the ability to do Split on the K3?
Can I still listen to the pileup on VFO B and transmit on the VFO B
frequency?
Thanks
jim ab3cv
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Ben,
Full tracking (freq, mode, filter etc) is enabled with diversity on.
Frequency tracking alone and leave the rest open, that is in the menu:
config: VFO LINK
I use them both under different circumstances, but that is not what you
are asking.
73
Arie PA3A
Op 6-5-2016 om 15:50
Retired now, so more time to "play radio."
Questions about Filter selection / Shift / Low-Hi Cut / Width control when K3
is in diversity mode.
Does the KRX3 track these main RX settings when diversity is enabled?
Can this "tracking" be disabled if it is enabled by default?
Look in archives
Just an unsolicited tribute to the K3's diversity feature. I had been
trying to work 8R1/K9XK in Guyana for a few days without success.
Although I usually do OK with that part of the world, he's been too deep
in the noise. I finally caught the propagation on 17 meters this
afternoon and could
Reading the manual I see there's an audio equalizer feature to tune the audio
to our liking. Is it possible when using subrx to independently adjust the
equalizer for each ear? I ask because I have some hearing loss at some
frequencies from my time in the Navy. As a result, sounds are often
Hi Jerry,
That's an interesting question. You can vary the volume of each receiver but
the settings you make in RX EQ apply to both receivers.
73,
Mike K2MK
ae4pb wrote
Reading the manual I see there's an audio equalizer feature to tune the
audio to our liking. Is it possible when using
be interesting to see if that feature could be added.
Original message
From: Don Wilhelm w3...@embarqmail.com
Date: 05/26/2015 8:26 PM (GMT-05:00)
To: Tony McRae a...@ttecs.com.au, elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3, diversity and noise reduction
The suggestion is to use the two identical receivers in the K3 to null
noise and interference. The idea is to connect each receiver to a
different antenna so the signals arrive with different phases. The
phase difference will generally be different for the desired signal and
the interference
Tony,
You are looking at information about how to compensate two unequal
receivers for true diversity reception - two orthogonally opposed
antennas receiving the same signal.
The K3 makes that easy with a sub-receiver that is identical with the
main receiver and they are phase locked together
It would be interesting to see if that feature could be added.
Original message
From: Don Wilhelm w3...@embarqmail.com
Date: 05/26/2015 8:26 PM (GMT-05:00)
To: Tony McRae a...@ttecs.com.au, elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3, diversity and noise reduction
Tony,
I strongly recommend the DX Engineering NCC-1 for noise cancellation:
http://www.dxengineering.com/parts/dxe-ncc-1
It is very effective at nulling out offending noise sources -- BUT, it
will do so for only one source at a time. You may find that nulling out
one of your sources will
.
Original message
From: Don Wilhelm w3...@embarqmail.com
Date: 05/26/2015 8:26 PM (GMT-05:00)
To: Tony McRae a...@ttecs.com.au, elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3, diversity and noise reduction
Tony,
You are looking at information about how to compensate two unequal
PM (GMT-05:00)
To: Tony McRae a...@ttecs.com.au, elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3, diversity and noise reduction
Tony,
You are looking at information about how to compensate two unequal
receivers for true diversity reception - two orthogonally opposed
antennas receiving
This is normally done ahead of the aerial input and will work with any
receiver that supports such an input.
Effectively what you are doing is creating a null in the antenna pattern
in the direction of the source.
It needs an effective point source to work well. If the signal is
getting
I have been watching some youtube clips showing how by adjusting the phase and
amplitude of two received signals on a diversity receiver local noise can be
reduced by more than 20db.
This would be particularly useful to me as I have the dirtiest plasma TV on one
side of me and a gaggle of
Press and hold SUB to enter diversity and just use Main VFO .. both
main and sub RX are using main vfo and the sub VFO and freq readout
does nothing other than a split TX freq?
Correct - both receivers are using VFO A and VFO B is only used for
split.
73,
... Joe, W4TV
On 2015-03-24
-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of
Wayne Burdick
Sent: Monday, March 23, 2015 10:32 PM
To: James Balls
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 Diversity VFO Linking
On Mar 23, 2015, at 9:21 PM, James Balls
So SUB VFO does nothing in diversity mode?
Press and hold SUB to enter diversity and just use Main VFO .. both main
and sub RX are using main vfo and the sub VFO and freq readout does
nothing other than a split TX freq?
Is this right?
Jim M0CKE
On Tue, 24 Mar 2015 03:52:09 -, Nr4c
Having just completed the Russian DX contest, our run station has 2
antenna and listens in 2 directions, we use diversity but it is very
annoying to have to keep re engaging VFO LINK in the menu every band
change ..
Could VFO Link have 3 options
OFF
ON
PERM
PERM meaning VFO A and VFO B in
On Mar 23, 2015, at 9:21 PM, James Balls makid...@gmail.com wrote:
So SUB VFO does nothing in diversity mode?
Even in diversity mode, VFO B can be used as the transmit frequency during
split. But in diversity mode, the main and sub receivers both use VFO A's
frequency.
Wayne
Press and
Actually in PERM mode it would be good that when the SUB is held and
Diversity is enabled that the mode freq etc is copied from A to B
automatically.
There is no need to copy A-B when engaging diversity. Diversity uses
VFO A (the same synthesizer) for both receivers - it is not simple
Thanks for all the input. I'll do the necessary cabling and give this a try.
Thanks!
jim ab3cv
On Tue, Feb 17, 2015 at 7:17 PM, Jim Miller j...@jtmiller.com wrote:
What are folks using for their two antennas to provide improved reception
on 160m? I have a recently installed 2 element
I am very happy with my Pixel Loop receive antenna. You could mount one
horizontally (basketball-hoop style) to get horizontal polarization.
On 18 Feb 2015 02:17, Jim Miller wrote:
What are folks using for their two antennas to provide improved reception
on 160m? I have a recently installed 2
Jim,
On 160m
For TX: 5/8 wave inverted L
For diversity RX: RX-4-square
73
Arie PA3A
Jim Miller schreef op 18-2-2015 om 1:17:
What are folks using for their two antennas to provide improved reception
on 160m? I have a recently installed 2 element vertical RX array and
thought the next step
On Tue,2/17/2015 4:17 PM, Jim Miller wrote:
What are folks using for their two antennas to provide improved reception on
160m?
I'd guess as many options as there are stations. :) It all depends on
what is available.
Remember that one of the major reasons for diversity is that the
What are folks using for their two antennas to provide improved reception
on 160m? I have a recently installed 2 element vertical RX array and
thought the next step would be trying diversity but not clear that my only
other 160 antenna (inverted L) would be sufficiently different to be of use.
How would I set up the K3 in diversity mode with two different RX only
antennas? One to the RX antenna and one to the AUX RF? Would going into
diversity mode with that setup get me one RX antenna in one ear and the
other RX antenna in the other?
73, Ken, K6LA / VY2TT
Ken,
Yes, that is how you would set it up - you need to select RX ANT for
both the ain and the SUB. And yes, you hear what is on the main in one
ear and what is on the SubRX in the other ear (unless you mix them with
the L-MIX-R settings in the CONFIG menu).
73,
Don W3FPR
On 5/22/2014
Ken,
Yes, that is exactly the way to do it, and that still allows you to
transmit through the main antenna. So in other words, you would select RX
ANT for the main receiver, and be sure to select the AUX input for the
sub-receiver (while b SET is engaged, tap the ANT button on the K3 to
alternate
No. You need to select RX ANT on one RX and AUX on the other RX.
Otherwise you will hear the same signal in both ears, namely that of the
RX ANT input. ;-)
73, Olli - DH8BQA
Contest, DX radio projects: http://www.dh8bqa.de
Am 22.05.2014 14:15, schrieb Don Wilhelm:
Ken,
Yes, that is how
Jim AB3CV wrote
At this point my primary interest is 160m diversity implementations. Any
suggestions based on experience with an inverted L and beverage?
Jim, the inverted L plus Beverage should be an excellent combination while
using stereo diversity. That's exactly what I used in ARRL160.
Alan, how do you float your L? My L is relatively close to my receiving
antennas, and I'd like to try that out and see if it makes a difference.
73,
Lou, W0FK
ai2n wrote
Additionally, you may want to float or detune your inverted L during rx,
especially if your rx antennas are close. My tx
I just disconnect the L from the coax center conductor AND the beta match coil
using a heavy duty open frame relay. Works for me. Make sure the relay
contacts get closed before the tx RF arrives. I use K6XX's relay accelerator
http://members.cruzio.com/~k6xx/radio/fastrely.pdf
73, Redd
I put up an inverted L for the 160 contest and as expected my beverages did
a nice job of improving the receive performance over it. The inverted L did
a good job of spraying my 500w watts around and I'm satisfied with it as
well. Best LOTW confirmed DX so far is Ukraine. Not bad for the first few
Sounds like a fairly good experience overall, Jim.
I'm on an even smaller ( 0.25 acre) HOA restricted lot and had an inverted L
on 160 that I used in conjunction with a K9AY receive antenna. I really liked
the K9AY, as it allowed for directional switching and very good S/N ratios with
a
I recently installed the new Shared Apex Loop Array from Array Solutions.
While I installed the 20' model, the 12' model has a much smaller footprint.
The 20' model works amazingly well and the specs show the 12' model doesn't
give up much.
73, Ken, K6LA / VY2TT
Hi Jim.
I also am on a small (125' square) lot, in the city.
I have been using BOGs and 14'x29' Flags, with an 80 meter inverted L
base-loaded for 160.
This year I added a 20' Shared Apex Loop Array. Yes, my antennas are too close
to each other. The SALA routinely outperforms the Flags.
All,
Apologize if this question has been asked before.
When handling pileups, I've always used the following setup and it truly works
FB - run split, lock the TX frequency, and use the main VFO to listen up/down
for stations.
Over the weekend I installed a RX only loop antenna(Pixel
Hi Robert,
Think of diversity as removing the Sub RX from the VFO-B knob. When in
diversity, the VFO-B knob is only useful in the control of split transmit
frequency (if you are in Split mode). It has no affect on the Sub RX
frequency.
So you should be good. Turn on Split, Lock VFO-B to maintain
Hello folks.
I'm planning on ordering the second receiver for my K3 soon and have a
question.
When using the second receiver in 'diversity mode' and trying to dig out a
weak and fading cw signal, what
roofing filter do you find most effective?
I'm assuming in those conditions the narrower
Diversity mode is used to reduce fading on received signals. Although using
narrow filters to listen to CW signals will improve your ability to hear the
signals, but it will not reduce fading of the signals, as diversity receiving
does very well if your antennas are placed properly.
Diversity
Note that the PRE/ATT setting for AUX RF BNC is separate from PRE/ATT for
the RX ANT on the main RX.
To set this correctly, first do a HOLD on RX ANT button to make sure the
subRX is listening on the AUX RF BNC. You will have to repeat the HOLD if
it already was on AUX RF and you just switched
I use a an R-5 vertical (designed for 20 thru 10) at 15 ft for diversity in
combination with a beam at 58 ft, with about 30 ft horizontal separation. I
find that it works well most of the time, but have to use much more gain in
the radio for the vertical because of weak signals. On 40 the
This macro simplifies switching the K3 into diversity receive mode. This K3
configuration and antennas are required:
1) KRX3 second receiver
2) KXV3A or KXV3 RF I/O module
3) The main TX antenna is used for receive along with a separate RX antenna.The
RX antenna is connected to both the KXV3/A
Firmware version 4.25.
If I'm using the subreceiver in diversity mode I can set its PRE and ATT
settings indpendently of the main receiver using BSET. But if I double-tap
A-B to copy all to VFO B, the main receiver PRE and ATT settings get copied
to the subreceiver. This is very weird. These are
Gee, mom, why didn't you insist that I try diversity reception sooner?
After reading a review here, I ordered and installed a Pixel RF PRO-1A
active loop antenna
I bought one also... business must be picking up at Pixel.
The loop is everything I could have wanted, works superb, hangs from
Hello,
I am using diversity and I notice something like a relay inside the K3 when
transmitting.
Some weeks ago Don told me about a problem I has with the RX ANT IN. The
problem was that the antenna I was using in RX ANT IN was very close to the
TX antenna.
In the case of diversity I have a 160
Yep you're probably activating your carrier operated relays because you
don't have enough separation between your antennas. Perhaps a limiter
could help if you're not transmitting on both of them.
~Brett (N7MG)
On Sun, 2010-09-19 at 23:09 -0300, Jorge Diez - CX6VM wrote:
Hello,
I am using
Of course the K3 has already done most of this, and then thrown Q away
at the last minute. The upconvert is, of course, done by the transmitter.
Alan Bloom wrote:
The other way to get the I/Q signals is with an I/Q modulator.
Basically you run the baseband audio signal into two mixers whose
Several weeks ago, I believe that Wayne posted a message asking what
kind of different uses people were coming up with for their K3. One
thing I've been playing with lately is feeding the signals from two
horizontally polarized antennas at different heights on my tower into
the Main and Sub
Spectrum Laboratory by DL4YHF http://www.qsl.net/dl4yhf/spectra1.html
may be able to do this already.
If the K3's 15 KHz IF output were available from the main and sub
receivers, Spectrum Laboratory could use those to generate the automatic
phase display using the direction finding feature.
What if I fed
the output from two VERTICAL antennas into the K3 receivers in diversity
mode, fed the audio output of both receivers into the A and B channels
of the computer sound card, and used an application that introduced an
adjustable delay in one audio channel before summing the two
David Gilbert wrote:
Playing around with this stuff got me thinking, though. What if I fed
the output from two VERTICAL antennas into the K3 receivers in diversity
mode, fed the audio output of both receivers into the A and B channels
of the computer sound card, and used an
There is another VERY important thing that is being missed by this
discussion. A VERY large component of fading is due to multipath -- that is,
the arrival of more two or more wavefronts that travel different paths, and
thus have slightly different travel times. This produces a phase shift
Thanks for the reply, Alan.
That's interesting. I didn't realize that the two receivers in the K3
had a random phase difference between them even when locked. I noticed
differences in phase delay when I changed frequencies during my tests
with the two horizontal antennas on the tower, but I
Yes, that should work, just switch the sub receiver antenna over to the
main receiver to calibrate the phase. I think you'd get the best
accuracy by looking for a null and then subtracting 180 degrees.
By the way, I think rather than an adjustable delay between the two
channels you need an
On Sep 16, 2010, at 9/169:59 AM, Jim Brown wrote:
A VERY large component of fading is due to multipath -- that is,
the arrival of more two or more wavefronts that travel different
paths, and
thus have slightly different travel times.
Selective fading does not require multipath. The
Hi, Bill.
All true, but I thought that implementing it at audio might have some
advantages ... assuming at least that someone already had the sub receiver:
a. Cheaper. The DXE unit is $500 ... considerably more than that if
you buy the active antennas as well.
b. More versatile. Since the
If you plot the fade statistics for HF signals, however, you find many
times that the result looks much more like Rician fading than Rayleigh.
Jack K8ZOA
On 9/16/2010 2:11 PM, Kok Chen wrote:
On Sep 16, 2010, at 9/169:59 AM, Jim Brown wrote:
A VERY large component of fading is due
Well, I was thinking mostly in terms of CW so I think delay and phase in
the context of a single frequency are essentially the same. I did give
a bit of thought to what it would take to make it work for SSB, though,
and while I am the last person on earth you'd ever want to consult on
math,
Alan has verified your point about relative phase of the two receivers
changing with frequency, so that indeed would have to be accounted for.
A possible mod would be to feed the main synth to both receivers. This
would then only be good for diversity operation, but there would be no
Hi, Lyle.
Thanks for the comment. If nothing else, I'm learning from this discussion.
Actually, until Alan pointed out that they were different, I thought
that the two receivers WERE driven by the same main synth in diversity
mode. If it were possible to have that option when in diversity
On Thu, 2010-09-16 at 11:29 -0700, David Gilbert wrote:
Well, I was thinking mostly in terms of CW so I think delay and phase in
the context of a single frequency are essentially the same. I did give
a bit of thought to what it would take to make it work for SSB, though,
and while I am
Hi Dave,
For some reason I got several copies of your message. I'll go ahead and
post my reply to the reflector since it may be of wider interest.
Yes, another way to get a constant phase shift at all frequencies is to
convert to an I/Q (in-phase/quadrature) signal. One way to do that is
to
That sounds very good, Alan. As I say, I'm not very knowledgeable on
signal processing so all of this is very interesting to me. I guess
whether any of it ultimately turns out to be useful to anyone remains to
be seen.
Regarding the multiple posts ... my ISP has been acting very flaky this
I just rummaged around in Google and found a different paper that
Watterson wrote related to HF propagation and digital modes (almost 10
years after his HF channel model paper):
http://www.its.bldrdoc.gov/pub/ntia-rpt/79-29/79-29.pdf
His conclusion definitely advocates the use of diversity
On Sep 16, 2010, at 1:55 PM, Alan Bloom wrote:
I think there are some free filter design programs on the web that can design
an all-pass network. It may need to be a big filter (i.e. lots of
coefficients) to get good amplitude and phase accuracy over a 10:1 frequency
range (300 Hz to 3
On Thu, 16 Sep 2010 12:06:23 -0700, David Gilbert wrote:
I thought
that the two receivers WERE driven by the same main synth in diversity
mode. If it were possible to have that option when in diversity mode,
that would seem to greatly simplify what I was suggesting.
YES!
Jim K9YC
reflector elecraft@mailman.qth.net
Sent: Wednesday, March 10, 2010 11:22 PM
Subject: Re: [Elecraft] K3 Diversity and mode changes
Graham,
When in diversity receive, VFO A is the VFO for *both* the main and the
sub. While in diversity, VFO B only serves as the transmit VFO if SPLIT
is active
I'm playing with diversity operation and find that when I change modes say from
usb to cw, the main rx changes frequency slightly to keep the received tone the
same (as expected), but the sub rx doesn't change frequency.
This is not a big deal because I can tap A-B to force the frequencies
Graham,
When in diversity receive, VFO A is the VFO for *both* the main and the
sub. While in diversity, VFO B only serves as the transmit VFO if SPLIT
is active. Tapping AB is really a no-op step in diversity (unless
SPLIT is on and you want to move the TX frequency to the RX frequency.
When I double tap A-B to send all settings to B, the ATT and PRE settings
are transported from the main to the subreceiver when in diversity mode.
This is not appropriate because the subreceiver is NOT using VFO B settings.
It should be independent of the main and stay put where it's set by BSET.
Jim AB3CV wrote:
Does CW benefit from diversity reception? Can anyone relate any
experiences with such improvement and some details on their setup
including filters/settings?
Jim, listen to some of the recordings at http://n1eu.com/K3/diversity.htm
By switching between stereo listening
On Tue, 29 Dec 2009 17:20:53 +1300, Gary Hinson g...@isect.com
wrote:
Does CW benefit from diversity reception? Can anyone relate any
experiences with such improvement and some details on their setup
including filters/settings?
Absolutely Jim!
Gary,
I have a 30m GP here with 3 radials at
Hi Jim:
If you're on the fence as to whether or not you should buy a sub-receiver I
would answer as follows. If the only reason for your buying a sub RX is to
obtain diversity reception I would suggest that you first purchase the KXV3A
option which gives you the ability to use a separate receive
Hi All
Thanks for all the diversity input. I was just interested in how it
affected CW. Sounds like if I can swing receive antenna that won't get
clobbered by my current antenna when transmitting it might be worth
pursuing.
FWIW, Santa brought me a subRX which for now will be used to listen to
My receive antenna for the 2nd receiver is a floor to ceiling wire I have
stuck to an indoor wall corner and tuned for the band of operation with a
small MFJ tuner.
Many times it pulls in signals better than my main outside long wire.Those
times when it isn't better but still receives the
Does CW benefit from diversity reception? Can anyone relate any
experiences with such improvement and some details on their setup
including filters/settings?
73
jim ab3cv
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Sent: Mon, December 28, 2009 7:44:50 PM
Subject: [Elecraft] [K3] Diversity and CW?
Does CW benefit from diversity reception? Can anyone relate any
experiences with such improvement and some details on their setup
including filters/settings?
73
jim ab3cv
Does CW benefit from diversity reception? Can anyone relate any
experiences with such improvement and some details on their setup
including filters/settings?
Absolutely Jim!
Diversity helps on ALL MODES. The main thing I notice is that it fills in the
dips, in other
words when a signal
I want to set my K3/100 up for diversity reception using my main
antenna (doublet) and a receive loop with with pre-amp.
The K3 is fitted with a KAT3, KXV3 and KRX3.
As I wish to keep maximum flexibility of antenna switching I do
not want to use the AUX BNC for the Sub RX as it stops me from
Stewart Baker wrote:
As I wish to keep maximum flexibility of antenna switching I do
not want to use the AUX BNC for the Sub RX as it stops me from
easily using either the main antenna or loop as Sub RX input. I
don't want to be reconfiguring the K3 hardware as my needs change.
On Wed, 23 Dec 2009 03:30:27 -0800 (PST), Bill W4ZV wrote:
Stewart Baker wrote:
As I wish to keep maximum flexibility of antenna switching I do
not want to use the AUX BNC for the Sub RX as it stops me from
easily using either the main antenna or loop as Sub RX input. I
don't want to be
Why do you have AUX allocated to ANT2 instead of AUX BNC? Use AUX BNC and if
you need to route your loop to RX ANT in addition to AUX BNC, use an
external switch or splitter.
73,
Barry N1EU
Stewart Baker wrote:
On Wed, 23 Dec 2009 03:30:27 -0800 (PST), Bill W4ZV wrote:
Stewart Baker
On Wed, 23 Dec 2009 05:18:57 -0800 (PST), Barry N1EU wrote:
Why do you have AUX allocated to ANT2 instead of AUX BNC? Use AUX BNC and if
you need to route your loop to RX ANT in addition to AUX BNC, use an
external switch or splitter.
As I wish to keep maximum flexibility of antenna
I don't see the necessity to connect Main ant to subrx with a different ant
on mainrx. Just use the Main ant on mainrx. You're over-thinking the
flexibility issue IMHO.
73,
Barry N1EU
Stewart Baker wrote:
On Wed, 23 Dec 2009 05:18:57 -0800 (PST), Barry N1EU wrote:
Why do you have AUX
Stewart Baker wrote:
Main RX - Ant 1 - Doublet
Sub RX - Ant 2 - Loop pre-amp (with output switchable to RX ant
input)
Stewart I'm still missing something in your setup. If you only have one TX
antenna (i.e. the doublet) and one RX antenna (the loop), why not connect
the loop to the
Hi Barry,
Oh dear... I hope Father Christmas brings me a new brain !
The problem is that I had convinced myself that there was only one
input path into the Sub RX, and that came in via J92. In reality there
is another path via the RF board.
End result is that when I actually tried it (using the
...@mailman.qth.net] En nombre de Stewart
Enviado el: Miércoles, 23 de Diciembre de 2009 12:58 p.m.
Para: Barry N1EU; Elecraft Reflector
Asunto: Re: [Elecraft] K3 Diversity antenna settings - wish
Hi Barry,
Oh dear... I hope Father Christmas brings me a new brain !
The problem is that I had convinced
Jorge -
On page 4 of the manual you mentioned is a diagram of both the front and
back of the K3, with all connectors labeled. The circled numbers for the
front panel diagram are explained in the text on pps 4-6. Look for
numbers in curly braces {19}.
The rear panel (with another diagram) is
I use my K3 in diversity receive 90% of the time. I have matched 2.7 KHz
filters in both receivers. The sub receiver has only the one filter the main
also has 500 Hz, 6 KHz and 13 KHz filters.
I have had no issues when the two receivers are using different filters. I
may be lucky. I understand
What is supposed to happen if one uses unmatched filters in main/sub rx?
Steve
N4LQ
n...@carolina.rr.com
- Original Message -
From: Mike Scott m...@paxsen.com
To: Elecraft@mailman.qth.net
Sent: Tuesday, December 22, 2009 10:43 AM
Subject: [Elecraft] K3 Diversity and filter selection
I
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