Allan,
If the KRX3's bandpass filter for 30m has been aligned properly, one thing
worth checking is that the 8.215 MHz trap ahead of the bandpass filters is
aligned properly.
>From looking at the schematic of the trap, it is likely that the top of the
trap's response is not very narrow in terms o
Well, I replaced the diodes in the swr sense circuit but still not go on
the amp.
So I'm running bare-foot for now.
I think I'm going to try to patch into the amp from a little MFJ cub,
through the swr circuit and into a dummy load to see if there is any FWD
and REV voltages present.
Maybe I can
Johnny -
The best people to recruit for Ham radio are not the ones who only think of
it as a replacement for a telephone, but for the ones who are fascinated in
the other aspects - the interaction of factors that affect radio
propagation, or antenna design, or competition, or "collecting" (like
DX
I got into ham radio to impress the chicks.
In retrospect, I probably should have joined the wrestling team... :-)
S Sacco wrote:
>
> The best people to recruit for Ham radio are not the ones who only think
> of
> it as a replacement for a telephone, but for the ones who are fascinated
> in
>
I've been working a bit of PSK 31 and Olivia in DATA-A mode lately. I
generally keep the bandwidth wide open but occasionally crunch it down to
something narrower and shift the center freq when in QSO. I'd like to be
able to use the NORM function to reset the filter to max width (FL1) and
center f
I joined the wrestling team, but it did nothing to advance my radio skills.
You made the right decision for the wrong reason.
--
Sent from my BlackBerry Wireless Handheld
Russ Garrett
Bullivant|Houser|Bailey PC
805 Broadway Street, Suite 400
Vancouver, WA 98660-33
For Sale K1-4 (40,30,20,15), KAT1 tuner, Backlight display, Tilt stand, KBT1
Internal battery (not installed). serial #2194 vs 109. Manuals for radio
and all options. Excellent condition works as it should. $425 shipped
Conus Priority Mail. Any questions email k...@yahoo.com or call
903-778-2
http://www.eham.net/reviews/review/81985
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Hi Paul,
You can have two custom NORM settings per mode in addition to the
factory default NORM. See the section titled "Filter Normalization
(NORM)" in the owners manual. (It's on page 24 of the D4 rev.)
That said, they're not quite as easy to use as the factory NORM
settings since you ha
Please Delete VA7GL from Mai list Tnx DonH
Sent from my iPhone 73's DonH.
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This
I just completed an installation of the K3 audio low pass filter board, the
one Lyle put out to individuals who wanted to try it. I was busy until now
as the boards came out some time ago.
It took a lot longer than expected because all the K3 DSP board holes were
full of solder. The instructions s
Tnx Joe and Tom,
Works as advertised! I didn't see it in the manual, appreciate you pointing
me in the right direction.
73 de WW2PT
Joe Planisky wrote:
>
> Hi Paul,
>
> You can have two custom NORM settings per mode in addition to the
> factory default NORM. See the section titled "Filte
I don't know who wrote the instructions you got. I've not worked on
installing that board.
It sounds like it uses some open vias (the round 'grommets' that join traces
different opposite layers of the board together.
I'd bet the person who created the document had a version with open vias.
How
G'day,
What about - how did it perform?
Regards,
Mike VP8NO
- Original Message -
From: "Mike Scott"
To:
Sent: Friday, July 03, 2009 4:04 PM
Subject: [Elecraft] K3 Audio Low Pass Filter
|I just completed an installation of the K3 audio low pass filter board,
the
| one Lyle put out
When I installed mine I just filled up the Via's a bit more and then was
able to get it all easily with the solder sucker. Although I was using
a sucker connected to house air and capable of RoHS temps (although I'm
not sure if I stepped up into those ranges).
The board went in quite smoothly a
For Sale
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Buddipole Deluxe Package + Guying wires, Demo $295 + shipping
Buddistick Deluxe Package, Demo $95 + shipping
Miracle Whip, Excellent Condition $49 + shipping
Will sell all three together for $399 + shippi
> I would like to consider making more audio modifications, the one changing
> headphone audio coupling capacitors to larger values for example. I looked
> at those capacitors and I wondered how I was going to get them out.
Patience, good eyesight, a steady hand and a narrow soldering pencil.
Rem
I’ve recently purchased a KX-1 to be built for hire.
Doing a little house cleaning and wanted to sell, in kit form, a 4 or 5
year old tuner kit partially built LDG Z-11 Automatic Antenna Tuner.
It’s two boards, 100 components, 400 solder joints. I’ve inserted 60-70
components, wound toroids, t
G'day,
| All in all I'm quite pleased with the sound difference.
|
| ~Brett
OK, that's couple of positive comments. Is there any technical data on
the characteristics of this filter. For example, does it in any way
respond to the "pink" vs. "white" noise thread of a few weeks ago.
I've becom
Anthony wrote:
>I am building my K1, and have completed the first section of the
>build, and am at the DC Voltage check stage on page 30 of the
>manual...
>
>If anyone has some ideas for me to try to track down my problem I'd
>appreciate it.
AND
Rick wrote:
>Interesting. I'm at the
There has to be a set of SMT caps that will fit back down onto those
pads... Has anyone looked for that yet? If there isn't a set of caps
that fit those pads with the right specs then that means that Elecraft
had to spin the board when they started putting those caps in there.
~Brett
On Fri, 200
Its a low pass filter starting around 3.8Khz or so. I have some before
and after plots. I just need to get around to posting them so I can put
them up on the reflector.
On Fri, 2009-07-03 at 19:45 -0400, Mike Harris wrote:
> G'day,
>
> | All in all I'm quite pleased with the sound difference.
>
What is the point of insertion (in terms of the schematic) for this filter?
Bob NW8L
On Fri, Jul 3, 2009 at 6:09 PM, Brett Howard wrote:
> Its a low pass filter starting around 3.8Khz or so. I have some before
> and after plots. I just need to get around to posting them so I can put
> them up o
Mike,
The method that I use to clear holes in pcbs that are filled with solder is
similar to pushing a heated wire through the hole, but I use a sewing needle
instead because solder will not stick to a needle. As you did with with the
wire, keep heating the needle with an iron while pushing it
Dear Elecrafties,
Some years back I came across a neat little quick reference guide for the K2
and it has served me well over the years, reminding me how to do stuff
without having to drag out the manual. I printed it out and laminated it to
sit in my 'K2 suitcase set' until needed.
Well now I'd
Its installed in the speaker outputs. So it doesn't modify the
headphone circuits but I use it via speaker at home most of the time...
I should take a look and see if the headphone output had that 11-12khz
stuff on it...
~Brett
On Fri, 2009-07-03 at 18:21 -0600, Bob Cunnings wrote:
> What is the
It's a sad day at KD0R. #6708 is in the hospital. I noted this
afternoon that there was only 0.1 w shown as output during TUNE. And
the outboard power meter was not wiggling. I read the manual, then
opened things back up to inspect. When I got the heat sink off the
problem was obvious.
Hi All,
Earlier today Mike Scott wrote:
"I just completed an installation of the K3 audio low pass filter board,
the one Lyle put out to individuals who wanted to try it."
Can anyone give me a referral to the original thread on this K3 Audio
Low Pass Filter. It must have gotten past me when o
> Its installed in the speaker outputs.
That's a shame, It should be in the common feed to both
the headphone and speaker amplifiers.
> I should take a look and see if the headphone
> output had that 11-12khz stuff on it...
Yes, it's coming out of the DSP DAC ... it's present on all
three
> There has to be a set of SMT caps that will fit back down onto those
pads... Has anyone looked for that yet? ~Brett
I've looked. The problem is in getting more than 100 uF of C in the given
PCB real estate with SMT components. At 220-330 uF, radial caps are
required, unless Elecraft was to
Nifty publishes a K3 guide
http://www.niftyaccessories.com/Elecraft_RefGuide.htm
Dick, K6KR
Sent from my iPhone
On Jul 3, 2009, at 6:06 PM, "Gary Hinson" wrote:
> Dear Elecrafties,
>
> Some years back I came across a neat little quick reference guide
> for the K2
> and it has served me wel
Is stacking 2 high possible to get enough cap?
Merv KH7C
>> There has to be a set of SMT caps that will fit back down onto those
>>
> pads... Has anyone looked for that yet? ~Brett
>
> I've looked. The problem is in getting more than 100 uF of C in the given
> PCB real estate with SMT com
I could be wrong... I'll have to take a closer look... Or I guess I
could just take some audio measurements of the headphones port.
~Brett
On Fri, 2009-07-03 at 21:37 -0400, Joe Subich, W4TV wrote:
> > Its installed in the speaker outputs.
>
> That's a shame, It should be in the common feed t
I've been informed Elecraft is already replacing those caps with 100uF
caps in the current production units.
~Brett
On Fri, 2009-07-03 at 21:50 -0400, Paul Christensen wrote:
> > There has to be a set of SMT caps that will fit back down onto those
> pads... Has anyone looked for that yet? ~Bret
I built a K1 and did not hit this wall. I did spend a lot of time
circling in confusion before I managed to develop a clear understanding
of what was going on. It is not a lack of information, but the way this
information is revealed.
I hardily agree with Mike's assessment. At the price p
>> There has to be a set of SMT caps that will fit back down onto those
> pads... Has anyone looked for that yet? ~Brett
Current production radios use 100 uF capacitors in those positions,using the
existing pads.
Lyle KK7P (on the road)
__
> This is THE most common and well-known "problem" that comes up for K1
> builders.
>
> The problem is due to the fact that you have not applied the ERRATA
> F-8
> that comes with K1 manual, rev. F of 01-24-2002:
>
> http://www.elecraft.com/manual/K1_Errata_Rev_F-8.pdf
>
> You MUST install a jump
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