Heil has a really nice 8 pin mic connector (I think it's referred to as a
"Foster" connector) and it's about the same price as the one from Radio
Shack but has bit more room inside and fits the radio connector better. HRO
has them for $8 to $10 for pack of two.
...bill nr4c
-Original Messag
Don,
My last idea had no effect so it looks like I have a capacitor problem.
73,
Ed KE7HGA
On 6/4/11 10:51 PM, Don Wilhelm-4 [via Elecraft] wrote:
> Ed,
>
> You seem to have run out of adjustment range on L30.
>
> You will have to change the turns spacing on T5 to produce a voltage at
> R30 th
Don,
After setting 80m high freq to 6.0v the low freq 3500kHz measured 1.7V.
Everything else measured 8.0v which as you know IS about .5v above the
upper limit of the range. I will try to see if I can get some more
spacing on the windings on T5 and try again.
73<
Ed KE7HGA
On 6/4/11 10:51 P
Hello Group,
There are Method 1 and Method 2 for frequency calibration on P.50 of the K3
operation manual. Has the calibration specific for KTCXO3 implemented? Do I
miss anything? Or, simply, is there any frequency calibration needed for
KTCXO3 (apart from data entry in K3 Utility) ?
T
Don,
I did as you suggested and now have the voltage set to 6 volts at
4000kHz. I will check each band as well.
Thanks for your help!
73,
Ed KE7HGA
On 6/4/11 10:51 PM, Don Wilhelm-4 [via Elecraft] wrote:
> Ed,
>
> You seem to have run out of adjustment range on L30.
>
> You will have to cha
Ed,
You seem to have run out of adjustment range on L30.
You will have to change the turns spacing on T5 to produce a voltage at
R30 that is within range.
Since your R30 voltage is 8 volts, when tuned to 4000 kHz, tune to a
lower frequency so that the voltage is something less than 8 volts.
Well, that's wonderful procedure for someone who has a rich easy to
understand voice. Really.
I don't have such a voice. Even when I'm trying to stage project, I sound
like I'm talking through a muffle.
What the K3 voice processing does for me is to elevate the highs enough so
that a spectrogra
Having once again taken the venerable old D-104 to bits (and I hope that
fellow enjoys his D-104 - apart from all else it is a "classic"), has anyone
else gone further back?
Perhaps using an F1 button (the "poor Hams" mike of the 1950's, liberated
from a telephone handset)? It was a carbon but
All,
I have mad it to page 64. When I check the volts at R30 using my DMM I get
8 volts. I assume that the left side of R30 would be having the front of the
radio facing me so the lead I tested was towards adjacent the side panel.
It did drop to 7.5v but at that reading the L30 was at what appea
ok since this thread has assumed the usual endless back and forth,
and before it is ended by the powers that be,
I'd like to repeat what I said when I first answered,
I now use an amplified D-104 on my K3
yes it does some impedance transformation magic,
that's not why I use it, it just has a prett
> Then why not just put a 1 megohm or so resistor in series with the mic
> element. I believe the K3 mic input has adequate gain to compensate for
> it, and it will keep the crystal (or ceramic) mic element happy.
> The KISS principle applies - a resistor is much more simple than an FET
> or a tra
A fully loaded KX1. Serial #1403. $400.
KX1, 3080 Option, ATU, Paddle, K6XX VISIBLE CW LED TUNING INDICATOR.
Running at 14VDC from my Astron PS I get the following outputs:
NOTE: ALL BARS REFERS TO THE RF 1 2 3 DISPLAY. TUNE REFERS TO USING THE TUNE
OPTION. DL1 IS CALCULATED FRM THE DL
Jim and all,
Looking at the schematic for the K3 mic input, it is an op amp with a
gain of 10. It looks to be a classic differential amplifier with a 10k
resistor in both the + and the - inputs. That would produce an input
impedance of about 20k ohms. Matching is not necessary (nor desira
Despite all the "solutions" presented, the D-104 Lollipop is one of
those classic mic frames that just will not give up. I have 2, one with
no PTT lever on it (anyone have one for sale?) and another with a Heil
HC-5 cartridge instead of the original mic element.
For those who have a D-104 f
I give :-/
Why use a D-104 if that's the only point? A $3 electret from " the shack" will
do just as well.
Hopefully, someone will step in and kill this thread.
To the original poster - the simple solution is to use an Astatic stand with a
preamp or something similar. Or as Don suggested,
The weekly Elecraft SSB net will meet tomorrow (6/5/11) at 1800Z on 14.3035
MHz +/- QRM. I will be net control from Oregon, and we'll try relays to pull
in the stations that I can't hear. See you there.
73,
Phil, NS7P
__
Elecraft maili
Changing the termination only modifies the frequency response in the input
circuit. What does it matter whether the frequency response is established
at the microphone input or later in the audio system?
Ron AC7AC
-Original Message-
From: Grant Youngman [mailto:n...@tx.rr.com]
Sent: Sat
After reading all the comments about doing this and doing that, all I can
say is ...
I've made tens of thousands of SSB contacts using a fifty-year-old D-104
directly into the K3 with no resistors, no amplifiers, no transformers, no
nothing. Audio quality reports were always outstanding.
Don't le
Sent from my iPhone
Begin forwarded message:
> From: Grant Youngman
> Date: June 4, 2011 5:29:16 PM CDT
> To: Ron D'Eau Claire
> Subject: Re: [Elecraft] D 104
>
> Gain isn't the issue. It's the termination Z. A low Z termination will
> destroy the frequency response. Why do that and the
All of the vacuum tube rigs from the 50's that I used with a D-104 had an
input impedance of between 500k Ohms and 1 Megohm (the grid resistor of the
first speech amplifier stage). Astatic does not list a specific load
impedance on the specifications sheet I have.
The original D-104 used a Roche
If there's enough gain, probably work fine. As large an R as possible. The
termination Z affects the low freq response of the element. I realize some
here aren't keen on that, but it makes a difference :-)
Sent from my iPhone
On Jun 4, 2011, at 3:37 PM, Don Wilhelm wrote:
> Grant,
>
> Then
Just a heads up about the returning a K3 or KPA500 for repair service - the
instructions contained in the RSA letter Elecraft sent me for packing and
shipping state "Ship to: Elecraft , Inc. PO Box 69. Aptos CA 95001-0069 (if
shipping via Postal Service) or Elecraft, Inc 125 Westridge Dr.,
Watsonv
I'm re-sending this because it seems to have gotten lost.
> That would be a COMPLETE AND TOTAL waste of time. The K3 mic input Z
> is 600 ohms nominal per spec.
Nominal is the operative word here. It's designed to have enough gain
for the low impedance mics commonly used with ham gear. If you s
Good Afternoon,
The weather is balmy and the wind is gentle. It is amazing what 72
degrees F feels like after months of cold and wet. Very sunny and bright
today. As I was driving in my truck it got hot in the cab. I am just not
prepared for the heat of a 70 degree day :) For my exam
Howdy Gang:
We had a beautiful afternoon today here in Southeastern North Carolina...80F
with a nice breeze. so it was the perfect time to take my K2 out to the
field and play radio.
My first shot with my wrist rocket went easily over a tree and my PAR 40/20/10m
EFHW antenna was up in minu
Grant,
Then why not just put a 1 megohm or so resistor in series with the mic
element. I believe the K3 mic input has adequate gain to compensate for
it, and it will keep the crystal (or ceramic) mic element happy.
The KISS principle applies - a resistor is much more simple than an FET
or a
Sent from my iPhone
Begin forwarded message:
> From: Grant Youngman
> Date: June 4, 2011 3:12:03 PM CDT
> To: "j...@audiosystemsgroup.com"
> Subject: Re: [Elecraft] D 104
>
> 10-15k is not high enough for good performance from a D-104 element. It will
> sound like a squeaker at best, ir w
On 6/4/2011 12:16 PM, Grant Youngman wrote:
> That would be a COMPLETE AND TOTAL waste of time. The K3 mic input Z is 600
> ohms nominal per spec.
Nominal is the operative word here. It's designed to have enough gain
for the low impedance mics commonly used with ham gear. If you study the
schem
If an active transformer/buffer is really desired, I recommend staying away
from an op-amp circuit. A single-stage JFET transistor uses fewer parts, is
generally less susceptible to RF, and there's no voltage-divider bias needed
** -- and still have the benefit of a high-Z input and low-Z outpu
I found the issue. Had the filter in the wrong slot.
On Sat, Jun 4, 2011 at 1:50 PM, Don Wilhelm wrote:
> Steve,
>
> Have you done the first step in the Calibration Procedures? Go to the menu
> CONFIG: VCO MD, set the parameter to CAL and exit the menu to allow the
> routine to run.
> If you do
That would be a COMPLETE AND TOTAL waste of time. The K3 mic input Z is 600
ohms nominal per spec.
The D-104 element needs 500k minimum and better no less than 5M. Last I heard
the input stage of a K3 was not a 12AU7/12AX7.
That's why Z transformation (preamp, xformer) IS required for this el
On 6/4/2011 11:45 AM, Lou Kolb wrote:
> You'd also be well advised, if its an unamplified D-104, to add one of the
> op-amp matching circuits which can be powered from the K3.
As a pro audio engineer, I would advise trying the D104 straight into
the K3 and using TX with someone listening to you c
Hello Dave!
The answers are no, no, and not yet.
73,
Lyle KK7P
> has Elecraft said if the KX3 contains an FPGA chip? running the CORDIC
> algorithm?
>
> and, more generally has Elecraft posted a block diagram of the KX3's
> architecture?
__
Or a simple matching transformer -- Hi-Z to Low-Z. But in either case, you
can't run a naked D-104 into the K3 mic input. The element needs to see a very
high impedance.
Grant/NQ5T
Sent from my iPhone
On Jun 4, 2011, at 1:45 PM, "Lou Kolb" wrote:
> You'd also be well advised, if its an una
You'd also be well advised, if its an unamplified D-104, to add one of the
op-amp matching circuits which can be powered from the K3. It'll make the
D-104 look into the 10 megohms or so that it likes and it will sound much
more natural. a Quic google search should yield a few of these circuits.
Hi
has Elecraft said if the KX3 contains an FPGA chip? running the CORDIC
algorithm?
and, more generally
has Elecraft posted a block diagram of the KX3's architecture?
73, dave, W1TM
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Home: http://mailm
> "SM6CKU" == SM6CKU writes:
SM6CKU> Hello guys,
SM6CKU> Well, it just happened when I started to call CQ and I have
SM6CKU> no idea why. The
SM6CKU> MON was indeed also set to zero, which I discovered
SM6CKU> first. Strange things
SM6CKU> seem to happen with thi
Interesting, Stephen! Then you are a bit ahead of us here in the US.
I receive almost all of the statements for credit cards, auto loan and
utility bills
electronically, and pay the bills the same way. I have to think about
where my
checkbook is on the rare occasion that I need to write a chec
The KX1 has been SOLD.
tnx
de George
WD0AKZ
dit - dit
--
View this message in context:
http://elecraft.365791.n2.nabble.com/KX1-For-Sale-tp6426934p6439707.html
Sent from the Elecraft mailing list archive at Nabble.com.
__
Elecraft maili
Steve,
Have you done the first step in the Calibration Procedures? Go to the
menu CONFIG: VCO MD, set the parameter to CAL and exit the menu to allow
the routine to run.
If you do not see that menu item, go to TECH MD and turn it on, then you
should see the entry.
73,
Don W3FPR
On 6/4/2011
I use an amplified D-104 with my K3, excellent audio reports.
I have also used an un amplified D-104, with equally good reports.
Try your local radio shack for the 8 pin jack.
8-Pin Ham Microphone Plug
Model: 274-025 | Catalog #: 274-025
$4.19
http://www.radioshack.com/product/index.jsp?product
Still, I have to hand it to the team at Elecraft for offering upgrades
to the K2 as new
capabilities became available.
When the K2 was introduced 12 years ago, we didn't have any spectrum on
the 60m
band. Elecraft wasn't in the transverter business, either. But they
came up with a
kit that pr
I would like to connect a D 104 mike to the K3 but the D 104 is a 4 pin jack
and the K3 is 8 pins.
I have not been able to find a 8 pin jack for the mike at either MOUSER or
DIGIKEY suppliers.
Does any one use the D104 with the K3?
Any advise?
Thanks
Charlie White
K6TBB
San Diego
__
I just finished building my K3/10. For one of the calibration steps I
am trying to receive WWV. It seems that receive is not working on the
K3. I have a steady hiss no mater if it is hooked to a dummy load or
an antenna.
This is a basic K3 with no options.
Any ideas?
Steve
N8JAF
_
The lesson is:
If you change menu items related to K3 calibration settings, reboot the K3.
Here's what embarrassed me.
A local recently licensed ham brought his newly built K3-100 over for
some final tuneups.
We checked the various earlier calibrations done and then went to the RF
gain calibr
There -might- be an issue related to a forgotten
low pass TVI filter tucked away under the desk.
Some units were / are OK to 52 MHZ, but many
aren't. They can be the source of "strange" rig
behavior on 6M.
73! Ken Kopp - K0PP
___
Hello guys,
Well, it just happened when I started to call CQ and I have no idea why. The
MON was indeed also set to zero, which I discovered first. Strange things
seem to happen with this radio (Windows-like), but I still enjoy it :-)
73 de Ben
- Original Message -
From: "Matt Zilmer"
I remember some time ago, Elecraft said maybe in Oct/Nov timeframe.
That's great.
Was there anything else released or talked about at Dayton?
Will the tuner do as well as the ATU in the K3?
Inputs for radios?
How many antenna outputs?
Etc..
Thanks in advance,
Planning for the future!!
_
Hi David,
does that happens with the ATU inline only or do you have the same problem
with the ATU in bypass mode ?
On 6 meters some hams reported problems with the ATU
OTOH your LPF for six might be up in smoke...
73
Michael
--
View this message in context:
http://elecraft.365791.n2.nabbl
The CW pitch has a bottom limit of 300 Hz. He probably had the MON
setting at ZERO, which would have the same effect as described.
73,
matt W6NIA
On Sat, 04 Jun 2011 07:40:11 -0400, you wrote:
>Ben,
>
>That would explain it. A pitch of zero would put the audio in the sub audible
>range and pro
Ben,
That would explain it. A pitch of zero would put the audio in the sub audible
range and probably put it below the bandpass of the audio amplifiers and
filters resulting in muffled or no audio in CW. If you set your IF bandwidth
high enough, you would have been able to hear stations that we
I found the problem. For some reason the pitch of the sidetone was zero and was
adjusted and sidetone OK. But how can that "mute" the receiver in CW mode?
Now everything is normal but these small things makes me nervous.
73 de Ben
__
I can confirm this. I bought an OCXO from them for about the same
cost and is in use for 5-months with only 1-Hz drift compared to my
Rubidium. Short term stability is +/- 5xE-12, and phase noise is
-150 dBc/Hz at 1-KHz.
http://www.kl7uw.com/Rubidium.htm
At 07:59 PM 6/3/2011, Chuck Smallhous
Good morning to you too, Ben.
In CW mode Hold the CMP PWR knob, then release it and turn it clockwise.
73 de David G4DMP
In a recent message, SM6CKU writes
>
>Good morning
>
>All of a sudden my K3 (2066) seems to be muted in CW on receive, and I
>lost the sidetone while TXing.
>In all other mo
This is pretty standard practice here in the UK, and I guess much of
the rest of Europe. I doubt if I write more than half a dozens
cheques (checks) a year now and they are shortly to be phased out
altogether by the banking system here. I can, in most cases, transfer
money from my account to some
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