Don and Bert,
Thanks for inputs from both.
All measurement was done without the filter board.
Petr
-
73 - Petr, OK1RP
"Apple & Elecraft freak"
B:http://ok1rp.blogspot.com
MeWe: https://bit.ly/2HGPoDx
MeWe: https://bit.ly/2FmwvDt
--
Sent from: http://elecraft.365791.n2.nabble.com/
Good Evening,
Twenty meters was noisy but open to the east. QSB was deep so
repetition was appreciated. Forty meters was also noisy but QSB was
deeper, cutting out whole words. It was fun digging out all of you. I
did have one problem. I thought I was copying noise. The signal was so
Mark,
See my prior email.
73,
Don W3FPR
On 4/21/2019 1:43 PM, Mark Yergin wrote:
I'm getting 0.02 V at R30, not 6V. Turns on T5 correct and wound per
image. Reflowed the four solder joints and verified continuity between 1
and 2, 3 and 4. C72 is correct value (label 271) and reflowed. L30
Chris,
Have you tried ordering the part from Elecraft? I am assuming they
still have some in stock. Email to pa...@elecraft.com with the part
number and description and you should receive a return email with the
cost. That will allow you to use the Quick Order form on the website to
order
Jay,
You will need to key the amplifier with a keying output from the K2.
Yes, the amp will detect band and frequency, but you still need a KEYOUT
from the K2.
The best solution is to use the N0SS Amplifier Keying board. Since Tom
is SK, no kits are available, but I understand you can obtain
Robbie,
It sounds to me like you have an RF Gain Control that is worn.
Sine it has been out of service for a while, you might be able to
restore it by rotating the RF Gain knob through its rotation 10 to 20 times.
If that does not correct it, then replacing the control is the only option.
Bert,
Multiply the RF Voltages listed for the RF Probe by 2.8 to get the peak
to peak RF voltages observed with an oscilloscope.
73,
Don W3FPR
On 4/21/2019 9:13 PM, Bert wrote:
HI Don and Petr,
Thanks for the offer Petr but Don has already been kind enough to send
me the Rev. D, 2000 K1
Don and Petr,
Forgot to mention that measurement was done with filter board plugged
in. 5.7K
Bert VE3NR
On 4/21/2019 6:26 PM, Don Wilhelm wrote:
Petr,
Do you have the filter board plugged in when you read 5.6k ohms?
Note in the Revision D manual, the filter board is NOT plugged in when
HI Don and Petr,
Thanks for the offer Petr but Don has already been kind enough to send
me the Rev. D, 2000 K1 Manual. Thanks anyway!
I find it quite difficult sometimes to troubleshoot and follow the
schematics. Also doing signal tracing in the receiver and
transmitter is quite subjective
All,
My K2 has been out of service for an extended period. Today, I put it back
on the air and it appears to function properly, except for the bar graph
display which is erratic. When I rotate the rf gain control counter
clockwise segments begin to illuminate until the 3rd is illuminated. As i
KK2L writes:
> Good Afternoon All,I have a Cirro Mazzoni Baby loop antenna and would like to
> take advantage of the RS232 module with my KX3. Of course, I have no
> problem with this interface using my K3. But I was wondering how one would
> go about creating a RS232 interface using the KX3.
Greetings all,
How could I use the KXPA100 amp with my K2? I don't think the K2 has a keying
line, and so I wonder if the KXPA100 would automatically detect band and
frequency through the built-in tuner without a keying line cable. Any info
appreciated.
73 Jay K3BH
I'd try a PGA-103+ as a retrofit... plenty of them around.
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Chris Reed
Sent: Sunday, April 21, 2019 6:07 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] XV144 ATF34143
Tried a 10x scope probe and that did the trick. Thank You!.
Mark
On Sun, Apr 21, 2019 at 5:48 PM Don Wilhelm wrote:
> Mark,
>
> I am not talking about the 10x/1x sensitivity scaling of your frequency
> counter itself.
> I am referring to the capacitance of the probe itself. You should be
>
Hi all,
The ATF34143 Phemt used on the rx input is discontinued and I just wondered
what the suggested replacement would be for this little gremlin. I've Just
purchased a second hand XV144 and I'm not getting any variation when I adjust
c1 and it looks like the 34143 has already been changed
U6 Pin 5 = 4.1v
PLL ref Osc range at TP3 = 12098.83 to 12084.95
VFO at TP1:
@4000kHz = 8077.0
@7100kHz = 11288.5
Mark
On Sun, Apr 21, 2019 at 6:02 PM Don Wilhelm wrote:
> Mark,
>
> First check the DC voltage on U6 pin 5. It should be near 4 volts - if
> not, you have a problem on the
Petr,
Do you have the filter board plugged in when you read 5.6k ohms?
Note in the Revision D manual, the filter board is NOT plugged in when
making the resistance measurements on page 45.
The filter board is not plugged in until you get to page 46.
73,
Don W3FPR
On 4/21/2019 5:57 PM,
Tomy,
The KX3 to KPA100 cable assembly and the KX3 to PX3 cables are involved.
The PC connects to the KXPA100 using the KXUSB cable to control not
only the KXPA100, but the PX3 and the KX3 as well.
In other words, the PC cable connections are "daisy-chained" From the
PC to the KXPA100
Mark,
You will likely have to gain access to a full RS-232 port by using a USB
to serial adapter. Connect that to an RS-232 "Y" cable. One side of
the "Y" connects to the RS-232 of your loop antenna, and on the other
side of the "Y" connect to your KX3 using the KXSER cable from Elecraft
-
Mark,
First check the DC voltage on U6 pin 5. It should be near 4 volts - if
not, you have a problem on the thermistor board, likely a solder bridge.
Then recheck the PLL reference oscillator range at TP3 using CAL FCTR.
Tell me the high and low frequencies.
Then check the VFO frequency
Hi,
Chose instead the U5. It is slightly less money and is just lacking a bunch
of fancy audio features that have no use in a panadapter. Also all the
cables come out on one side which makes for neater cabling.
I believe Asus has overcome its early failure problem(s). I have had mine
for at
Hi Don and Bert,
as I noticed this evening > troubleshooting nor alignment parts are not same
in the different Rev. of K1 manuals.
Our sick K1 is also from 2000... RF board Rev. D, 2000 so I am using the
manual Revision D, Dec 1, 2000.
Unfortunately when I measured the resistances on page 45
Folks - thread has been closed previously.
73,
Eric
Moderator
elecraft.com
---
Sent from my iPhone 6S
> On Apr 21, 2019, at 12:53 PM, Dave Heil wrote:
>
> There used to be (and there may still be) in the Cinch line, locking Jones
> connectors with steel tabs on each side with released when
Mark,
I am not talking about the 10x/1x sensitivity scaling of your frequency
counter itself.
I am referring to the capacitance of the probe itself. You should be
using a 10x 'scope probe which has a low capacity and will not load the
PLL Reference circuit.
73,
Don W3FPR
On 4/21/2019 1:07
Forgot to include my call.
73,
Mark
W7MLG
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The I/Q feeds through the PX3. You need to take the I/Q out of the PX3 and
send it to a high quality sound card, usually a USB sound card.
If you want wideband, choose a 192 kHz card from here:
http://www.telepostinc.com/soundcards.html
I use a U7.
The rig control also feeds through the PX3
There used to be (and there may still be) in the Cinch line, locking
Jones connectors with steel tabs on each side with released when you
squeezed them.
73,
Dave Heil K8MN
On 19-Apr-19 19:28, Fred Jensen wrote:
Because they are not locking and will separate if pulled, on more than
once
When using the KXPA100 amp with the KX3 the control is via the amp. USB to
3.5 cable plugs into the amp and feeds through to the KX3. No computer to
KX3 cable is needed, just computer to KXPA100. Same cable you would use on
barefoot KX3.
Jim Rhodes
K0XU
Does anyone know how to hook up the proper cable,?, to run an SDR like HDSDR on
the KX3 withthe PX3 also hooked up. We are also using the KXPA100 amp.
I know the end that fits in the IO R on the PX3 is a 2.5 mm can I use on the
other end a USB A.Where might I find this cable? I only have USB
Cinch-Jones always referred to square black connectors with large "blade" pins.
They were used a lot with early ham amplifiers and until recently in
Ham-series rotator controllers; now they come with 9-pin round
connectors populated with 8-pins which one crimps onto rotator wire
and inserts
I'm getting 0.02 V at R30, not 6V. Turns on T5 correct and wound per
image. Reflowed the four solder joints and verified continuity between 1
and 2, 3 and 4. C72 is correct value (label 271) and reflowed. L30 is the
correct value (large slot), and reflowed. D21-26 confirmed as correct
values.
BNC with mini test clips. I can switch in 10x (or 1x) on the FC but that
doesn't make any difference.
FC is a BK Precision 1823A.
Mark
On Sun, Apr 21, 2019 at 11:37 AM Don Wilhelm wrote:
> Mark,
>
> What kind of probe are you using on your external frequency counter?
> You should be using a
Good Afternoon All,I have a Cirro Mazzoni Baby loop antenna and would like to
take advantage of the RS232 module with my KX3. Of course, I have no
problem with this interface using my K3. But I was wondering how one would
go about creating a RS232 interface using the KX3. Would a simple RS232
It appears from the schematic that the Elecraft 144-450 MHz Directional
Coupler for the W2 SWR/Power Meter can safely pass DC voltage without any
direct interface nor danger of damage with the sensor electronics. My
question, has anyone confirmed that the VHF/UHF couplers are safe to use
with
Good Morning,
Last week's sunspot is passing over the limb of the sun. The rest
of the surface is blank. But twenty meters has a roaring sound to it.
Even though the CME thrown by the spot was not aimed at us there are
still a few effects from it. There are a few contests going on but
Mark,
What kind of probe are you using on your external frequency counter?
You should be using a 10x probe like you would use on an oscilloscope to
keep the loading of the circuit by the probe capacity to a minimum.
73,
Don W3FPR
On 4/21/2019 11:30 AM, Mark Yergin wrote:
I found that when
I found that when both my external FC probe and the probe provided by the
kit were attached to TP3 the K2 frequency reading was lowered significantly
(~12070 from about 12098) vs when measured separately. C22 could not make
a match. Separately the two measurements were fairly close, and I could
OK - I check this again after moving the board off my antistatic mat and
onto the manual, and power cycling the multimeter, and how I'm getting 3.6k
ohms at this point. So all OK. Not sure what this issue was that moving
the board or power cycling the MM solved.
Mark W8EWH
On Sun, Apr 21,
I'm on the Page 62 Resistance Check and R115 / 12V IIN check should be >500
ohms and I'm getting 132 ohms. All other checks in the table are fine.
Before I move on to Alignment and Test Part 2, I want to get some feedback
on this discrepancy. Move on? Or what does this indicate I should be
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