[Elecraft] K3/SVGA Question

[David Cole]

Hello,
I noticed today, that the SVGA display shows one S unit lower than the
normal P3 display...

An example is as follows:

1.  I set the P3 to 200 KHz wide.
2.  SVGA shows plus/minus 100 KHz, as the P3 does.
3.  I turn on peak hold.
4.  I have a peak of S9 on the P3, but on the SVGA the peak is S8.

What am I not understanding here?

-- 
Thanks and 73's,
For equipment, and software setups and reviews see:
www.nk7z.net

For MixW support see;
http://groups.yahoo.com/neo/groups/mixw/info
For Dopplergram information see:
http://groups.yahoo.com/neo/groups/dopplergram/info
For MM-SSTV see:
http://groups.yahoo.com/neo/groups/MM-SSTV/info



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Re: [Elecraft] Yaesu M.D. 100 on a boom

[Joe Subich, W4TV]

As long as the MD100 or the base has a standard 8 pin plug/socket,
matching connectors are available to make an extension cable.  Check
www.packetradio.com for the connectors (CE8 and and CBC8).

According to the schematic for the MD-100 you only need pin 8 (mic
audio), pin 7 (mic return), pin 6 (PTT) and pin 5 (ground/shield)
in the cable.  If you have access to "Heil wire", it is very good
for the extension - use the twisted pair for pins 7/8, the single
wire for pin 6 and shield for pin 5.

73,

  ... Joe, W4TV


On 9/30/2015 12:04 PM, edwin weider wrote:

I use a Yaesu   MD100 desk Mic with my K-3.  It is connected to the front 
microphone socket currently. I'm a quadriplegic in a wheelchair which prevents 
me from getting as close to the microphone as I would like to. I would like to 
mount my current microphone on a boom or gooseneck and continue to use the PTT 
and lock button on the base of the MD100.  I can operate those buttons fine.   
Question one: is there any way to make a cable, or is one currently available 
commercially, that would screw into where the microphone screws into the base 
of the MD 100 ? Is there a coupling I could use ? Thus I could use the buttons 
on the base.If that is not possible, I could just unscrew the microphone, get a 
microphone cable that fits the K-3.  I could then have someone make a simple 
switch that would plug into the PTT socket in the back of the K-3.  Any 
recommendations on such a cable.   That way I would not need to purchase a new 
microphone.  The MD100 works fine.
If it's not possible to continue using the MD100, I assume other microphones 
and cords are compatible with the K-3. Then I can purchase a desk switch or 
have someone make one.
Appreciate any insight,


Ed  WeiderK2EDW 


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Re: [Elecraft] Yaesu M.D. 100 on a boom

[Don Wilhelm]

Ed,

The standard microphone for the Yaesu MD100 (and other Yaesu 
microphones) does not match the K3 microphone pinout.
Sooo - someone has re-wired the microphone plug to match the Elecraft 
pinout instead of the Yaesu pinout.
If you are replacing the cable, the new cable must be wired for the 
Elecraft microphone pinout as well.


73,
Don W3FPR

On 9/30/2015 12:04 PM, edwin weider wrote:

I use a Yaesu   MD100 desk Mic with my K-3.  It is connected to the front 
microphone socket currently. I'm a quadriplegic


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Re: [Elecraft] K3 - background hiss (noisy K3) - update

[bozidar]

Hallo John,

tnx for proposal, a will try with some attenuation.
Gary AB7MY from Elecraft have helped me with some interesting proposals too.
I completely agree with you, unfortunately mein KX3 showes the same behewior
(hiss when RF put on zero), but in contrary to my K3, this hiss disappeared
when RF is more than 0,
so for normal work with KX3 this hiss has no meaning.
tnx for all responses
73,
Bozidar, S50BN



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Re: [Elecraft] [K3] Test Mode TX and TX Monitor?

[Ian White]

In the next
>code release I'll add a feature to force the SWR to read 1:1 when
>forward power is close to zero.
>
>Alan N1AL


If no valid result is possible, then "1:1" would be the *worst* possible
choice! Simply blank the display or show "N/A".  

Most QRPers understand that primitive SWR meters may display "zero
reflected power" due to the diode threshold voltage, but we'd hope for
the P3 to be a little smarter.


73 from Ian GM3SEK


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Re: [Elecraft] No power out and no receive

[John Lemay]

If there is no receive capability at all on the radio it could be quite a
serious fault - either with the radio or the feeder or aerial.

I'd suggest that under these circumstances trying to transmit is a daft
idea. Rigs these days are pretty well protected, but not completely
foolproof.

John G4ZTR

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of way235
Sent: 30 September 2015 04:52
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] No power out and no receive

I also tried ant 2 since it has the ATU but I have the same problem on both
ant connectors.
No power out and no RX just noise.



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Re: [Elecraft] No power out and no receive

[way235]

Ok, got it working. I have two KSNY3 boards on main and SUB receivers.  The
led was on for the SUB but the LED on the main was off.  I switched the
boards and it started working.  Must have been a loose connection on one of
the cables???



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Re: [Elecraft] VFO B is tracking VFO A

[Don Wilhelm]

Steve,

VFO LNK was changed with MCU firmware 5.10 - VFO Linking is now a menu 
item CONFIG: VFO LNK.  That is a per band setting.

Go to 17 meters, enter the CONFIG MENU and change it to OFF.

It may be a good idea to read the firmware release notes and make a 
notation in the manual when changes like this are made.


73,
Don W3FPR

On 9/30/2015 3:43 PM, Steve Mollman wrote:

I have a K3 without the sub-receiver. When on 17 meters only, VFO B tracks VFO 
A. I want to un-link them.
  I have tried pushing the "SUB" button to un-link them as described on pages 6, 14, 22 and 37 of 
the manual and page 108 of Fred Cady's book.  When the "SUB"  button is pushed (either momentary or 
holding) I just get the message  "NO SUB".  Nothing else happens.  Firmware is up to date.
This is driving me batty! Does anybody have any ideas as to how to un-link the 
VFO's? On the other bands  they are un-linked and work fine.




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Re: [Elecraft] K3S Proper Grounding

[Jerry Moore]

What I don't understand is my previous radio didn't affect the TV as far as I 
know (xyl never complained) so it has me perplexed because the radio shouldn't 
matter. As far as the buckmaster ocf, it uses a current transformer 
(auto-transformer )to balance the antenna and match the impedance. 
Jer

On September 28, 2015 1:37:16 PM EDT, Jim Brown  
wrote:
>On Mon,9/28/2015 9:35 AM, dw wrote:
>> If a tuner is located at the rig-side of the coax, and the coax is at
>> high SWR, it could possibly be a cause for coax radiation.
>
>It doesn't work that way.
>
>Radiation from coax is the result of IMBALANCE in the antenna. A
>ferrite 
>common mode choke at the feedpoint can fix that.
>
>73, Jim K9YC
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[Elecraft] VFO B is tracking VFO A

[Steve Mollman]

I have a K3 without the sub-receiver. When on 17 meters only, VFO B tracks VFO 
A. I want to un-link them.
 I have tried pushing the "SUB" button to un-link them as described on pages 6, 
14, 22 and 37 of the manual and page 108 of Fred Cady's book.  When the "SUB"  
button is pushed (either momentary or holding) I just get the message  "NO 
SUB".  Nothing else happens.  Firmware is up to date.
This is driving me batty! Does anybody have any ideas as to how to un-link the 
VFO's? On the other bands  they are un-linked and work fine.

KD9HL-Steve
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Re: [Elecraft] VFO B is tracking VFO A

[Steve Mollman]

That did it!  One of those "Duh" moments. Thanks to all.Steve - KD9HL
 


 On Wednesday, September 30, 2015 2:57 PM, Don Wilhelm 
 wrote:
   

 Steve,

VFO LNK was changed with MCU firmware 5.10 - VFO Linking is now a menu 
item CONFIG: VFO LNK.  That is a per band setting.
Go to 17 meters, enter the CONFIG MENU and change it to OFF.

It may be a good idea to read the firmware release notes and make a 
notation in the manual when changes like this are made.

73,
Don W3FPR

On 9/30/2015 3:43 PM, Steve Mollman wrote:
> I have a K3 without the sub-receiver. When on 17 meters only, VFO B tracks 
> VFO A. I want to un-link them.
>  I have tried pushing the "SUB" button to un-link them as described on pages 
>6, 14, 22 and 37 of the manual and page 108 of Fred Cady's book.  When the 
>"SUB"  button is pushed (either momentary or holding) I just get the message  
>"NO SUB".  Nothing else happens.  Firmware is up to date.
> This is driving me batty! Does anybody have any ideas as to how to un-link 
> the VFO's? On the other bands  they are un-linked and work fine.
>
>



  
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[Elecraft] ACC2

[frank]

ACC2 = OFF  appears to be a factory default.  Why?

Other rigs do not disable the amp keying line.  Why was it neccessary to do 
that in the KX3?
-- 
Frank - K5DKZ
KX3 - 7550
PX3 - 1143
KXPA100 - 1566
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Re: [Elecraft] K- Line & Microkeyer II interfaces

[Bill OMara]

Thanks Joe I'll let the group know the outcome of this set-up

-Original Message-
From: Joe Subich, W4TV [mailto:li...@subich.com] 
Sent: Tuesday, September 29, 2015 9:39 PM
To: Bill OMara 
Subject: Re: [Elecraft] K- Line & Microkeyer II interfaces


> I think the PTT from the K3 PTT IN is forwarded in the E850463 cables 
> but I'm not sure.

As long as you have not installed the "PTT Breaker" or removed the PTT pin from 
the cables, it should be forwarded to the KAT500 then to the KPA500.  I have 
neither in my shack so I'm going from the manuals.

73,

... Joe, W4TV


On 9/29/2015 9:10 PM, Bill OMara wrote:
> I guess I'm coming out of the MK II PTT into the K3 PTT IN.I'm not 
> sure
> if I need to use the MK II PA Out to the Kat500 or KPA500 as I think 
> the PTT from the K3 PTT IN is forwarded in the E850463 cables but I'm  
> not sure.
>
> Please use w...@aol.com as my primary account
>
> -Original Message-
> From: elecraft-boun...@mailman.qth.net 
> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Joe Subich, 
> W4TV
> Sent: Tuesday, September 29, 2015 9:02 PM
> To: elecraft@mailman.qth.net
> Subject: Re: [Elecraft] K- Line & Microkeyer II interfaces
>
>
> To which PTT connections are you referring?
>
> 73,
>
> ... Joe, W4TV
>
>
> On 9/29/2015 8:28 PM, Bill OMara wrote:
>> Does anyone have a diagram for connecting the A full K-Line (K3,
>> KPA500
> and
>> KAT500) with the Microham MicroKey II.  I'm following the diagram in 
>> the
>> KAT500 manual but having problems understanding the best way to 
>> connect
> the
>> PTT lines from the MK II to the radio ...
>>
>>
>>
>> I'm using the E850463 Aux interface cable between the radio and 
>> KAT500
> and a
>> homemade E850463 (per pg 4 table KAT500 manual) for the KAT500 and 
>> the
> AMP.
>>
>>
>>
>> Any help would be great.
>>
>>
>>
>> Thanks
>>
>>
>>
>> 73 Bill  W4RM
>>
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>

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Re: [Elecraft] ATTN LED low level activity

[Don Wilhelm]

Ron,

That has to be a K1 that you are dealing with, although you did not 
state it.
When BAT is selected, the MCU samples the voltage produced by the R6 and 
R7 voltage divider.  When ATTN is to be indicated, the MCU pulls pin 3 
to a low state which turns on the LED.
I suspect you are seeing the result of brief negative going pulses 
between intervals when the voltage is sampled at the MCU pin 3.
I do not see any evidence of that behavior with a 13.8 volt power 
source, but I suspect it may become evident with a low supply voltage.
As you indicate, it should not be a big deal, but is only "interesting 
behavior".


73,
Don W3FPR

On 9/29/2015 11:20 PM, ron hansen wrote:

Just finished receiver portion of build on unit ser no 3388. Everything
working so far but I discovered a strange condition with the ATTN LED.
Whenever the display is set for BAT voltage the ATTN LED very dimly flashes
at about 10 times per second. The flashing is sort of random and only
happens when BAT is selected. Seems like this control is coming from the
PIC, there is no other input to the LM358...
Not a big deal, otherwise the ATTN LED works fine..
Ron




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Re: [Elecraft] K3 No power out and no receive

[Don Wilhelm]

The manual indicates that you should contact K3 support and give then 
that number.


73,
Don W3FPR

On 9/30/2015 8:59 AM, way235 wrote:

This is a K3 kit and is 6 months old bought April this year.  I am going back
thru initial setup and getting E 00044  ERR VC4 in calibration both A and B
VCO. at this time.  Worked perfect until yesterday.



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[Elecraft] Graphene

[James Rodenkirch]

The thickness of a future Elecraft rig - a K-5 or K-6, perhaps - may be 
constrained by the thickness of the components but not by the thickness of the 
board

http://biggeekdad.com/2014/09/graphene-miracle-material/
  
  
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Re: [Elecraft] K3 No power out and no receive

[way235]

This is a K3 kit and is 6 months old bought April this year.  I am going back
thru initial setup and getting E 00044  ERR VC4 in calibration both A and B
VCO. at this time.  Worked perfect until yesterday.



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[Elecraft] K3 - background hiss (noisy K3) - update

[Sullivan, Mike C]

Not sure this helps much other than knowing you are not alone.
I have had the same problem and fixed it exactly as John - VK7JB has - SN on my 
K3 is in the 800s.
I have checked my S/N ratio and it is at least as good as the spec.
My hearing has been checked here at work and I have been told that I have good 
hearing for anyone these days, and really good for an OF.
I would bet having a pair of good ear-plugs in my pocket from the age of 18 or 
so had a lot to do with it.
Just tripped 60 yesterday.

Mike Sullivan
Lockheed Martin, Denver
 73 WM0CW ..


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Re: [Elecraft] [OT] - Possibly - Small Loop Antennas For Receive

[Ignacy]

You hope that the loop can null the noise on 80m. Loops have a very sharp
null and will null the noise if it is coming from one direction. I am not
sure that the shielded loop is much better than unshielded. Also the signal
level on 80m will probably be pretty good without an amp. 

I suggest that you built an unshielded loop with a  piece of wire and a
tuning capacitor. Say a diameter of 5 ft. Then, you rotate the antenna by
hand and see whether the noise is nulled and whether the signal strength is
sufficient.

My shielded loop on 160m was a disappointement as it did not pick DX well. 

Ignacy, NO9E





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Re: [Elecraft] Cabela's Specials

[Ray Sills]

A similar box is available on Amazon, for around $12, IIRC, and it’s a bright 
orange in color.   The Harbor Freight version is Army green, and priced lower.  
And with the frequent 20% off coupon, you could save a bit more.

Often, the box is described and an ammo box.  But, certainly it could work 
nicely as a compact “go-box” for a KX3, or an HT with accessories and spare 
batteries.

I use a Lowe-Pro Edit 140 camera bag for my KX3.  It holds the rig, key, mic, 
compact Li battery, ear buds, BNC adapter, wire for antenna and counterpoise, a 
couple velcro straps, USB cable for KX3, AC charger for the Li battery.  It’s 
pretty full.. hardly any room left.

73 de Ray
K2ULR
KX3 #211


> On Sep 29, 2015, at 10:56 PM, Fred Townsend  wrote:
> 
> A number of people contacted me off list asking what the model number of the
> gun box I bought. I was visiting and I gave the box to my host (he doesn't
> know either) so I don't have it. Perhaps when I get the bill. In the mean
> here is some suggested info on the stackable ammo case below.
> 
> 73
> Fred, AE6Q


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Re: [Elecraft] [K3] Test Mode TX and TX Monitor?

[George Danner]

Phil - just remount them upside down. It will run out of it's own accord!

73 George AI4VZ

-Original Message- 
From: Phil Hystad

Steve — Sounds like that is indeed what is happening.  I may look into 
drilling some holes in the capacitors so the charge will leak out. :-)

73, phil, K7PEH

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[Elecraft] KAT500 Fault

[dave_w0ru]

I have the K3, KPA500 and KAT500 setup per Figure 1 on page 5 of the owner's
manual. With the KAT500 in Standby, I can tune with the KAT500 just fine.
When I try to tune with the KPA500 in Operate, I get a fault on the KAT500.
The KAT500 utility shows the maximum power set at 1500 watts. My
understanding is that the KAT500 switches the KPA500 out for the tuning and
back in when tuning is done. What is causing the fault on the KAT500?

73 de Dave w0ru



--
View this message in context: 
http://elecraft.365791.n2.nabble.com/KAT500-Fault-tp7608563.html
Sent from the Elecraft mailing list archive at Nabble.com.
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Re: [Elecraft] K3S Proper Grounding

[Bob McGraw - K4TAX]

Yes the Buckmaster does use a current transformer however that method 
does not provide much if any common mode rejection.  As to why one radio 
does it and one radio does not, something is different in your system.


Make sure each piece of equipment is tied {bonded} to a common point for 
your station.  In my case, I use the power supply ground terminal as the 
common point.  Also, since you have swapped radios around, highly 
suspicious would be coax jumper cable being defective or a PL-259 not 
being tight.  I always snug my PL-259's with a pair of 4" Channel Lock 
pliers.   With some brands and manufacture of connectors, finger tight 
is not good enough.


73
Bob, K4TAX

On 9/30/2015 2:51 PM, Jerry Moore wrote:

What I don't understand is my previous radio didn't affect the TV as far as I 
know (xyl never complained) so it has me perplexed because the radio shouldn't 
matter. As far as the buckmaster ocf, it uses a current transformer 
(auto-transformer )to balance the antenna and match the impedance.
Jer



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[Elecraft] KAT500 - Utility not working - update

[Bill Wiehe]

As an update, the KAT500 is headed back to the mother ship for a check up. All 
indications now are that the problem lies internal to the tuner.Thanks to 
everyone who provided  input. Your help was very much appreciated. 73, 
Bill-W0BBI
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Re: [Elecraft] K3S Proper Grounding

[Jim Brown]

On Wed,9/30/2015 12:51 PM, Jerry Moore wrote:
What I don't understand is my previous radio didn't affect the TV as 
far as I know (xyl never complained) so it has me perplexed because 
the radio shouldn't matter. 


Right. But there may be some difference in where the transmitter's 
chassis was connected.  When there's common mode current on a feedline, 
that connection becomes part of the antenna.


As far as the buckmaster ocf, it uses a current transformer 
(auto-transformer )to balance the antenna and match the impedance.


Don't believe everything you read!  OCF antennas are notorious for 
putting common mode current on the feedline.  Study


http://k9yc.com/CoaxChokesPPT.pdf  and
http://k9yc.com/RFI-Ham.pdf

73, Jim K9YC
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Re: [Elecraft] K3 background hiss in headphones

[Roy Koeppe]

I suggest adding a second resistor, across the headphones' cord, forming a 
pad instead of just a series resistor. Approximately 50 ohms shunt will 
restore damping effect to the headphones' response. This is good practice.


73,Roy K6XKIowa 


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Re: [Elecraft] ACC2

[Don Wilhelm]

That menu item refers to the GPIB half of the ACC2 jack - since it has 
multiple selections, the default should be OFF.
I believe the KEYOUT part of the ACC2 jack is always active - although I 
have not checked it myself.
Note that PTT is an input to the KX3 and is *not* the same as KEYOUT 
which is an output.


73,
Don W3FPR

On 9/30/2015 4:25 PM, frank wrote:

ACC2 = OFF  appears to be a factory default.  Why?

Other rigs do not disable the amp keying line.  Why was it neccessary to do 
that in the KX3?


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Re: [Elecraft] ACC2

[frank]

I knew there was something I did not understand about that.

That also explains why I had do an ACC2 = ON to make the KX3 work with the 
KXPA100.

On Wed, 30 Sep 2015 14:29:21 -0700
Wayne Burdick  wrote:

> Frank,
> 
> ACC2 has two outputs: a keyline for the amp (always on), and a 
> general-purpose programmable output (GPIO). The latter is what's controlled 
> by the ACC2 IO menu entry. You can use this signal for various functions as 
> described in the ACC2 IO menu entry. 
> 
> When the amp is used with our custom KXPA100 interface cable, the ACC2 
> keyline signal is routed to the amp, and the GPIO signal is broken out to its 
> own connector for your use.
> 
> 73,
> Wayne
> N6KR
> 
> 
> On Sep 30, 2015, at 1:25 PM, frank  wrote:
> 
> > 
> > ACC2 = OFF  appears to be a factory default.  Why?
> > 
> > Other rigs do not disable the amp keying line.  Why was it neccessary to do 
> > that in the KX3?
> > -- 
> > Frank - K5DKZ
> > KX3 - 7550
> > PX3 - 1143
> > KXPA100 - 1566
> > __
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> 


-- 
Frank - K5DKZ
KX3 - 7550
PX3 - 1143
KXPA100 - 1566
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Re: [Elecraft] ACC2

[Wayne Burdick]

Frank,

ACC2 has two outputs: a keyline for the amp (always on), and a general-purpose 
programmable output (GPIO). The latter is what's controlled by the ACC2 IO menu 
entry. You can use this signal for various functions as described in the ACC2 
IO menu entry. 

When the amp is used with our custom KXPA100 interface cable, the ACC2 keyline 
signal is routed to the amp, and the GPIO signal is broken out to its own 
connector for your use.

73,
Wayne
N6KR


On Sep 30, 2015, at 1:25 PM, frank  wrote:

> 
> ACC2 = OFF  appears to be a factory default.  Why?
> 
> Other rigs do not disable the amp keying line.  Why was it neccessary to do 
> that in the KX3?
> -- 
> Frank - K5DKZ
> KX3 - 7550
> PX3 - 1143
> KXPA100 - 1566
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Re: [Elecraft] OT USB Scope Question

[Brendon Whateley]

Although I don't own one, these devices seem to be improving all the time
and I wouldn't hesitate to buy one over no scope, or in addition to a "real
scope" -- budget permitting. I'd do a little online hunting for features
and reviews that would best fit my use cases. Just a quick glance at the
range of devices available in the PicoScope range shows everything up to
12GHz bandwidth, 16bit sample sizes and many inputs. Many also have signal
generators built in, which could make testing filters/traps/etc. a snap.

I'll share one interesting thing I was told by a representative of one of
the manufacturers at a show. I was talking about the performance of the
devices they were exhibiting and the possibility of getting the raw
digitized data into my own code. While that was suggested to be possible,
when I said I was considering trying it as the front end to an SDR he
pointed out a significant problem. He pointed out that the A/D in the USB
scope box ran too fast for USB, so the computer doesn't get all the data,
just bursts of signal. That works perfectly for a scope which by it's
nature doesn't display everything but would be useless for SDR.

Hope that is helpful,
- Brendon / KK6AYI

On Tue, Sep 29, 2015 at 7:16 PM James Bennett  wrote:

> I'm assembling a Softrock Ensemble RXTX rig, most likely for use as a 24x7
> WSPR beacon; there are several construction steps where optional testing
> beyond the basic voltage, resistance, and current measurements can be done
> with a scope.
>
> Jim Bennett / W6JHB
> Folsom, CA
>
> > On Sep 29, 2015, at 2:41 PM, Nr4c  wrote:
> >
> > Do you want scope for audio or RF?  What bandwidth does the item have
> and is it enough?
> >
> >
> > Sent from my iPhone
> > ...nr4c. bill
> >
> >
> >> On Sep 29, 2015, at 5:31 PM, James Bennett  wrote:
> >>
> >> A bit off-thread, but sort of related - wondering if folks on this
> reflector have any experience with USB oscilloscopes. I'm considering
> adding an o'scope to my test bench, and came across an Australian company
> called Bitscope.com. They have several models and appear quite affordable.
> The nice thing is they work on Windows, Linux, Mac OSX, and Raspberry Pi.
> >>
> >> I'm a bit limited not only on funds, but room for additional equipment,
> so one of those big analog models is out of the question.
> >>
> >> Anyone using a Bitscope unit or any other USB scope here on this
> reflector?
> >>
> >> Jim Bennett / W6JHB
> >> Folsom, CA
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Re: [Elecraft] No power out and no receive

[Ron D'Eau Claire]

Anything that disables the synthesizer will produce those symptoms. Check
the TMP cables that connect the KREF3 to the KSYN3 and to the K3 RF board to
make sure they are all properly seated. If your K3 has the newer KSYN3A
synthesizer board (mounted on the front panel shield with the KREF3) you
should see a green LED glowing brightly when you look down from the top
(it's on the back of the board near the top edge). If it's blinking the
synthesizer is NOT locked and will produce the symptoms you are
experiencing. Normally it will be glowing steadily. 

73, Ron AC7AC



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Re: [Elecraft] No power out and no receive

[Eric Swartz - WA6HHQ, Elecraft]

One correction to Ron's posting:  The Sub Rx's  KSYN3a (if you have the 
sub-receiver installed) may have a blinking green status light until the sub is 
actually turned on for the first time from the K3 front panel.


73,
Eric
/elecraft.com/

On 9/30/2015 8:03 AM, Ron D'Eau Claire wrote:

Anything that disables the synthesizer will produce those symptoms. Check
the TMP cables that connect the KREF3 to the KSYN3 and to the K3 RF board to
make sure they are all properly seated. If your K3 has the newer KSYN3A
synthesizer board (mounted on the front panel shield with the KREF3) you
should see a green LED glowing brightly when you look down from the top
(it's on the back of the board near the top edge). If it's blinking the
synthesizer is NOT locked and will produce the symptoms you are
experiencing. Normally it will be glowing steadily.

73, Ron AC7AC



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Re: [Elecraft] K3 - background hiss (noisy K3) - update

[Bob McGraw - K4TAX]

One spec pertaining to headphones, and one not realized in terms of the 
importance, is sensitivity.   The more sensitive the headphones means it 
takes less audio power to produce acoustic energy.  If a given signal 
say a value of -25 dBv is applied, this signal may be heard with some 
headphones and may not be heard with others.  Now, adding a series 
resistor in effect reduces the apparent sensitivity.  In fact, it 
reduces the available power to the headphones.  In the case of the -25 
dBv signal, adding a resistor may reduce this value to -35 dBv, or below 
the sensitivity threshold of the headphones.  All of this has little to 
nothing to do with the impedance of the headphones.


In most instances, everyone's hearing decreases with age.  Other factors 
that affect a diminished hearing is prolong exposure to noise or any 
loud sounds.   A combination of sound level and time exposed are key 
elements to diminished hearing.  Repeated exposure over a long period or 
repetitive cycles will lead to permanent hearing loss.  And in many 
cases this loss is so gradual over a period of years it is not realized 
or acknowledged to exist.


From my experience, the audiologist, after a hearing test said my 
hearing was normal.  Now what he didn't say was "my hearing was normal 
for a male of my age".My wife complains that I don't listen to 
her.   At least that's what I think she said.


73
Bob, K4TAX

On 9/30/2015 7:57 AM, Sullivan, Mike C wrote:

Not sure this helps much other than knowing you are not alone.
I have had the same problem and fixed it exactly as John - VK7JB has - SN on my 
K3 is in the 800s.
I have checked my S/N ratio and it is at least as good as the spec.
My hearing has been checked here at work and I have been told that I have good 
hearing for anyone these days, and really good for an OF.
I would bet having a pair of good ear-plugs in my pocket from the age of 18 or 
so had a lot to do with it.
Just tripped 60 yesterday.



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[Elecraft] Yaesu M.D. 100 on a boom

[edwin weider]

I use a Yaesu   MD100 desk Mic with my K-3.  It is connected to the front 
microphone socket currently. I'm a quadriplegic in a wheelchair which prevents 
me from getting as close to the microphone as I would like to. I would like to 
mount my current microphone on a boom or gooseneck and continue to use the PTT 
and lock button on the base of the MD100.  I can operate those buttons fine.   
Question one: is there any way to make a cable, or is one currently available 
commercially, that would screw into where the microphone screws into the base 
of the MD 100 ? Is there a coupling I could use ? Thus I could use the buttons 
on the base.If that is not possible, I could just unscrew the microphone, get a 
microphone cable that fits the K-3.  I could then have someone make a simple 
switch that would plug into the PTT socket in the back of the K-3.  Any 
recommendations on such a cable.   That way I would not need to purchase a new 
microphone.  The MD100 works fine.
If it's not possible to continue using the MD100, I assume other microphones 
and cords are compatible with the K-3. Then I can purchase a desk switch or 
have someone make one.
Appreciate any insight,


Ed  WeiderK2EDW 

  
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Re: [Elecraft] Cabela's Specials

[Matt Zilmer]

Hi Ray,

I use the ammo box as a handy carrier for the KX3 and accessories
while on-the-go, mobile.  The better choice for portable ops is
similar to what you called out.  For hiking, I use a Think Tank strobe
bag and it handles the same "backpack load" you listed.  I even bought
a second one as a battery companion carrier, for the main LiPo
external battery pack (using the internal AA cells as emergency
reserve).

The ammo box allows generous amounts of space for the KX3, KXPD3, MH3,
2m telescoping antenna, ear buds, BNC adapter and antenna wire kit,
etc.  I placed a washcloth in the bottom to pad the KX3's surface from
the somewhat rough interior of the box.

I just finished a 12-day driving vacation using the KX3 mobile, with
the KXPA100 stationary in the trunk.  Had very good results with this
type of traveling arrangement, and the KX3 performed flawlessly (but,
of course!).

:)

73,
matt
W6NIA


On Wed, 30 Sep 2015 09:53:00 -0400, you wrote:

>A similar box is available on Amazon, for around $12, IIRC, and it’s a bright 
>orange in color.   The Harbor Freight version is Army green, and priced lower. 
> And with the frequent 20% off coupon, you could save a bit more.
>
>Often, the box is described and an ammo box.  But, certainly it could work 
>nicely as a compact “go-box” for a KX3, or an HT with accessories and spare 
>batteries.
>
>I use a Lowe-Pro Edit 140 camera bag for my KX3.  It holds the rig, key, mic, 
>compact Li battery, ear buds, BNC adapter, wire for antenna and counterpoise, 
>a couple velcro straps, USB cable for KX3, AC charger for the Li battery.  
>It’s pretty full.. hardly any room left.
>
>73 de Ray
>K2ULR
>KX3 #211
>
>
>> On Sep 29, 2015, at 10:56 PM, Fred Townsend  wrote:
>> 
>> A number of people contacted me off list asking what the model number of the
>> gun box I bought. I was visiting and I gave the box to my host (he doesn't
>> know either) so I don't have it. Perhaps when I get the bill. In the mean
>> here is some suggested info on the stackable ammo case below.
>> 
>> 73
>> Fred, AE6Q
>
>
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Matt Zilmer, W6NIA
--
"Always store beer in a dark place."  -R. Heinlein

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Re: [Elecraft] What crystal filter do you use the most?

[Edward R Cole]

Doug,

Not sure what the first paragraph has to do with filter selection on the K3?

Using the 1st IF output one bypasses all filters and the DSP 2nd IF 
completely.  I know because I do that for both main and sub-receiver 
on my K3.  I use two LP-Pan (one for each IF).


You do not define "Full" in spectrum.  I suspect you mean you use the 
full bandwidth of your soundcard or the funcube.  This is 192-KHz for 
the best soundcards that I am aware of.  190-KHz is full bandwidth 
for my SDR-IQ.  Do not know what is possible with a fun-cube.


Full spectrum for my station is 100-KHz to 26-GHz; only display that 
will cover that for me is my old surplus HP141T spectrum analyzer - 
max scan spectrum is 200-MHz wide with the mw plug-in starting at fo =1500-MHz.


73, Ed - KL7UW

From: Doug Ellmore 
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] What crystal filter do you use the most?
Message-ID:

Content-Type: text/plain; charset=UTF-8

On my K3 I have an LP-Pan connected to my IF out on the main receiver and a
FunCube Pro on the subreceiver IF out.  The LP-Pan is setup to a Steinberg
USB UR22 sound card.  Therefore, I have two panadapters, one through Win4K3
for the main receiver, the second using NAP3 v5 to the funcube pro.

This give full spectrum display.  I say this, because my normal operating
==snip

73, Ed - KL7UW
http://www.kl7uw.com
"Kits made by KL7UW"
Dubus Mag business:
dubus...@gmail.com

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Re: [Elecraft] What crystal filter do you use the most?

[John Shadle]

I am one of those folks who has the INRAD 700Hz filter (special-ordered by
the guys at UNPCBs, http://www.unpcbs.com/). I use it exclusively for
scanning the bands on CW. When I want to get tighter, I have the 400Hz
filter below that. I've found that combination works wonderfully for me.

For SSB, I just have the stock 5 pole filter. I also have the AM filter,
but only use it for SWLing.

73
-john NE4U
Madison, WI
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Re: [Elecraft] Yaesu M.D. 100 on a boom

[Dick Dickinson]

Ed - 

 

I use an MD-100 in a boom, though I don't rely on the MD-100 base for PTT.

 

The Base of the MD-100 Mic takes the same type connector as the MIC input on
the front panel.  

 

There may be a few options for you.  

 

1)  Consider wiring the Element of the MD-100 through an 8-pin connector
to a 1/8" phone jack to the rear panel of the K3.  Leave the MD-100 base
plugged in and use the PTT on it.  I 'think' that will work.

2)  As 1) above plus wire an RCA plug to a desk, or panel mounted
switch.  Plug that into the rear PTT jack on the rear of the K3.  There are
some nice, fair sized bi-position switches that can be used.  One position
is momentary contact, while held in place.  The other is locked in place
until disengaged.  ON-OFF-MOMentary.  In this case, the MD-100 Base wouldn't
need to be plugged into the rig.  

3)   Extending the fixed cable on the MD-100 base that goes to the
MD-100 mic may work as well.  That may be achieved by splicing in additional
length of cable or an extended cable with an 8-pin female connector on one
end and a 8-pin male on the other end.  

 

 

73,

Dick - KA5KKT

 

 

"I use a Yaesu   MD100 desk Mic with my K-3.  It is connected to the front
microphone socket currently."

 

Ed  WeiderK2EDW  

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