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

[Edward R Cole]

Bob,

Good comments.  I think those of us who have been in ham radio for 
many years still think of physical filters as doing the job of 
specifying the radio bandwidth and forget that today's radio often is 
digital or partially digital where DSP does the job and filters are 
only used supplementary to help reject off frequency interference.


I have the 13-KHz filter for FM and can be used for AM which I only 
would use for sw bc where the KBPF3 operates.  the 2.8-KHz filter 
serves 95% of my use even for CW.  The exception is working CW-eme 
where I typically operate the DSP at 100-Hz.  There the 400-Hz 
roofing filter helps improve overall noise rejection and maybe helps 
sensitivity by deepening  the off freq skirts (a guess).  I have no 
local QRM on eme.


I typically tune eme in wide bw until a signal is detected by digital 
waterfall display which I then tune in and reduce bw to hear the 
signal.  My sub-Rx only has the 2.8-KHz filter because I only use it 
for diversity using digital modes or SSB.


But it took me awhile to get my mind to accept that Rx bw is done by 
the DSP and not the filters.


PS:  my new SYN3A and KBPF3 mod kit arrived in the mail today.  Going 
to be interested to see if I see any improvement in Rx sensitivity on 
eme.  Moving below 490-KHz is the other plus as most activity is now 
472-479 KHz.


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?

[Phil Wheeler]

Here 400 Hz on CW, 2800 Hz mostly on CW -- though 
I have the 1000 Hz filter for tuning on CW and one 
tighter one (2100 Hz) for more crowded SSB situations.


If budget had been a concern, I'd have gone with 
400 Hz and the stock 2700 Hz pair.


73, Phil W7OX

On 9/28/15 12:35 PM, Dan Atchison wrote:
I'm with W4TV on the 5-pole 200 Hz  filter as my 
overall go to on close in CW sigs.  The 8-pole 
250 Hz filter, which I also have, is actually 
about 350 Hz in width and way too wide for me.  
That said, I use either a 500 Hz or 400 Hz 
filter most of the time on CW/RTTY


It is unfortunate that Elecraft no longer makes 
the 200 Hz filter.  Shame.


If I was going to get only one CW filter, it 
would probably be the 400 Hz jobber.


73,
Dan


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

[Benny Aumala]

Being 95% CW and only sometimes on SSB
I use almost all the time 500Hz 5-pole filter.
I have 200Hz but use it very rarely.

This is just my experience since beginning of K3 history.
235 countries in QRP in 2 years, all States, all Oblasts.

BennyOH9NB

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

[Phil Wheeler]

Oops -- Here 400 Hz on CW, 2800 Hz mostly on SSB :-)

Phil W7OX

On 9/28/15 11:35 PM, Phil Wheeler wrote:
Here 400 Hz on CW, 2800 Hz mostly on CW -- 
though I have the 1000 Hz filter for tuning on 
CW and one tighter one (2100 Hz) for more 
crowded SSB situations.


If budget had been a concern, I'd have gone with 
400 Hz and the stock 2700 Hz pair.


73, Phil W7OX


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Re: [Elecraft] [K1] Question about antenna tuners that I should not have to ask but do.

[Wes (N7WS)]

Looking at the KAT-1 manual, it appears that NT 2 has the capacitor on the 
antenna side of the tuner.  I'm guessing that X10 means just that; whatever 
value displayed x10. If you can do the parallel/series math to derived the Z 
looking back into the tuner then go here: http://ac6la.com/tldetails1.html and 
down load the program.  This will do the transformation for you for the coax 
cable.  Just be sure to get the direction correct. (R & X at the input)  Once 
you have the antenna Z determined, you can use these values for the load and 
change the length of coax and see what you get.  Remember that the first answer 
is the conjugate of the antenna Z.


Regardless, use a 1:1 current balun.

Wes  N7WS




On 9/28/2015 4:37 PM, Douglas Hagerman wrote:

Does anybody have a “worked example” of how to use the L and C values reported 
by the K1 internal antenna tuner to analyze an antenna? I feel pretty guilty 
asking this, because it’s sort of a “please help me do my homework” question. 
And I am supposed to know how to do this homework.  :-)

I have a space-limited dipole for 20 meters with drooping ends. The KAT-1 tuner 
will tune it. What I want to know is whether to use a 4:1 or 1:1 balun, or no 
balun, at the antenna.

If the tuner reports 24 “x10” pF, is that 240 pF or 2.4 pF? A straight reading 
suggests that it’s 2.4 pF, but I don’t see how the tuner circuit can provide so 
little capacitance. But C4 (82 pF) plus C5 (150 pF) gives 232 pF which could 
240 pF if you include some parasitic capacitance, maybe?

Next, I need to figure out the circuit. If the tuner reports nt 2, I think that 
means that the coil is next to the tuner’s antenna connector, and the 
capacitance is in parallel with the radio connector. I guess that is designed 
to be 50 ohms of pure resistance, so I have a nice little circuit with one of 
each part. I can figure out the various reactances, etc., and combine them, but 
am not sure I’m doing it right. That should give me the reactance at the 
tuner’s antenna connector.

Then I have about 12 feet of RG-8x coax, so I can use a Smith chart to work out 
how the reactance at the tuners’s antenna connector is transformed to the 
antenna connection, but there is always the confusion about which way to go 
around the outside of the chart. And then take into account the 4:1 balun 
that’s on there. In theory, all of this should tell me the antenna's impedance 
at the point where the balun connects, which should suggest whether it would be 
better to use a 1:1 balun instead.

Does anybody have an example of this sort of calculation? I have looked in the 
Antenna Handbook and other sources and they all dance around it; I’m looking 
for something practical and cookbook-like.

Or I could spring for a 1:1 balun and try it.  :-)

Thanks!

Doug, W0UHU.




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

[Jerry Moore]

The advice I received was to try the radio stock then select what I needed.  I 
didn't want to deal with offsets or aligning filters when I eventually get the 
sub RX. Because of this I opted to upgrade to the 2.8KHz and purchased the 
400Hz on this list. When I get the sub rx I'll buy 250Hz x2, and duplicate the 
filters in the main rx.

My I ideas (which may be wrong) are to strongly leverage diversity rx (two 
separate antennas and receivers). 

I was planning to get the P3 first but I'm using a poor man's Panadapter  (SDR 
and HDSDR software which works very well. I'm not sure what the P3 will do for 
me at $700 that my current setup won't other than look nice and allow pc-less 
operation. I use HRD for logging anyway so... (shrug).

I've found under normal use with the filters not configured the receiver works 
really well. Where the filters seem to matter is when trying to hear weak 
signals near VERY close and strong signals. Even without the filters it's 
copyable after some fiddling. The filters make it easy for me. Play with the 
rig and learn all the buttons and features. 

While waiting for the new K3S book to come out  ( to be released soon enough so 
I pre- ordered/paid) I went ahead and bought the current K3 book and it's 
answering most of questions. 

Hope this helps
Jer
AE4PB -K3S S.N. 10324


On September 28, 2015 2:35:13 PM EDT, "Joe Subich, W4TV"  
wrote:
>
> > What filter do you find you use the most and why?
>
>The 400 Hz filter as it works well for both CW and RTTY.
>
>If I were not so concerned about RTTY, I would consider the
>*INRAD* 500 Hz (8 pole) filter for CW along with the 200 Hz
>(5 pole) Elecraft filter for times when adjacent signals are
>just too strong (I already have the 200 Hz filters).
>
>For SSB, I believe the stock 2700 Hz is more than satisfactory.
>The improvement from the 2800 Hz [8 pole] filter does not justify
>the "exchange price" - the savings from sticking to the stock
>2700 Hz filter can be used for the 400 Hz CW filter or to *add*
>either an 1800 Hz or 2100 Hz "narrow" SSB filter if needed.
>
>73,
>
>   ... Joe, W4TV
>
>
>On 9/28/2015 10:57 AM, dw wrote:
>> Hello gang,
>> Just ordered my first K3.
>> I haven't ordered any filters or accessories yet.
>> Want to wait and see what I really will need.
>>
>> I'd like to illicit your experience with the use of crystal filters
>for
>> CW.
>> What filter do you find you use the most and why?
>> I won't be using the K3 for contestingjust casual CW-only DXing
>and
>> occasional rag-chews.
>> Of late, I've really enjoyed getting on 40m and 30m at sunrise.
>>
>> Many thanks in advance
>> N1BBR :-]
>>
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Re: [Elecraft] KAT3A and KBPF3A questions

[Joe Subich, W4TV]

But my question s what is different in KAT3 and KBPF3A that I need to
change them


KAT3A has a bypass relay when the tuner is not in use.

KBPF3A changes the bandpass filter for 0.5 - 2.0 MHz "band" to move
the lower cutoff from 500 KHz to 100 KHz.

73,

  ... Joe, W4TV


On 9/29/2015 11:11 AM, Jorge Diez - CX6VM wrote:

Hello



Is the K3S ATU different tan the old K3ATU installed in the K3?



I was told that if I want to upgrade a K3 with general coverage to a similar
K3S I need to change:



KAT3A

KBPF3A

KSYN3AUPG

KXV3B



But my question s what is different in KAT3 and KBPF3A that I need to change
them



Thanks,

Jorge

CX6VM/CW5W

K3 #4077 and #7929





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[Elecraft] KAT3A and KBPF3A questions

[Jorge Diez - CX6VM]

Hello

 

Is the K3S ATU different tan the old K3ATU installed in the K3?

 

I was told that if I want to upgrade a K3 with general coverage to a similar
K3S I need to change:

 

KAT3A

KBPF3A

KSYN3AUPG

KXV3B

 

But my question s what is different in KAT3 and KBPF3A that I need to change
them

 

Thanks,

Jorge

CX6VM/CW5W

K3 #4077 and #7929

 



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

[bozidar]

Hi,
i have studied all the posts about this topic.
Seems, that is still, huge confusion about that, so i will try to formulate
a problem on simply way:

*With low impedance earphones plugged into the audio jack on the K3, you can
hear a really annoying noise (hiss) even with the AF and RF volume set to
zero(CCW). This audio hiss has a constant level, is added to the audible RF
noise and can prevent one from hearing weak  signals on an otherwise quiet
band.*

That hiss has nothing to do with K3 receiver or settings - simply is
permanent present.
This indicate that something must be wrong with earphones amplifier
LM4811MM, and that is
odd, because LM4811MM seems to be an high quality chip, designed exactly to
work with low impedance earphones , with a minimal amount of external
components?
My question is:
is, in the mean time, known any hardware (or anything else) modification for
that issue?

best regards,
Bozidar



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[Elecraft] Filter shift

[VANO Peter]

Hi all,
after years fb function I have experienced strange behavior.
On 3.5 Mhz band I set the width and shift on some value (no matter 
which). Then after swithing to another band and back settings on 3.5 
band are always changed to filter 1,  BW 2.2 and shift 1.6. It is 
posible to adjust it again back by hand. All other bands remember the 
previous settings belonging there. What I'm missing?

TNX and 73
Peter
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[Elecraft] OT USB Scope Question

[James Bennett]

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] K3 - background hiss (noisy K3) - update

[VK7JB]

Hello Bozidar,

I have K3 #5102 and also well preserved high frequency hearing. I've had the
same hiss on my K3 audio since it arrived from the factory. I've used a wide
range of headphones, expensive and cheap, and it's present with them all. I
discovered that the fix is to introduce some resistance into the audio line
and I use a very small, outboard, stereo headphone volume control to do
this. I bought several for a few dollars on eBay. I just dial in a very
small amount of resistance(I've never actually measured how much) and the
hiss is completely gone, with only a very small effect on the K3 audio
volume which can be easily compensated for by a tiny increase in the AF gain
control if you need to. I have the same hiss on my KX3 audio, which I manage
in the same way. 

FWIW, I have no hiss at all using the same headphones on my little KX1. 

Hope that helps,
73,
John VK7JB



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[Elecraft] K- Line & Microkeyer II interfaces

[Bill OMara]

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

[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


> On Sep 29, 2015, at 3:28 PM, Steve Glickstein  wrote:
> 
> I notice this too with my K3and TXMon.  It appears to occur in the Test Mode 
> after I've previously used the transmitter.  My guess is that there may be a 
> capacitor or two holding some voltagefrom the prior real transmission. If I 
> use the test mode first, before any transmissions, the PEP/SWR indicators on 
> the TXMon are both zero.
> 
> 73, Steve W4FMD
> 
> 
> On 9/28/2015 9:40 PM, Phil Hystad wrote:
>> I did something tonight I have not done before since having my P3 TX Monitor 
>> in place.  I was testing the adjustment on my paddle in TX Test Mode and I 
>> noticed that the P3 acted as normal — that is, no signal — with the 
>> exception of the bar graph for SWR.  The bar graph registered an SWR of 3:1 
>> (normally about 1.1:1) in response to key down while in Test Mode.  Yet, the 
>> bar graph acts normally showing the correct SWR in TX mode (not test).
>> 
>> I would expect that the P3 would not register anything while in Test Mode TX 
>> — just like before hooking up the TX Monitor.
>> 
>> So, this is a little anomaly that others see and is this normal behavior?
>> 
>> Thanks,
>> 73, phil, K7PEH
>> 
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Re: [Elecraft] OT USB Scope Question

[knology wb4jfi]

Hey Jim,
One thing to remember with any digital scope is that you need to watch out 
for digital sampling artifacts such as aliasing of signals in question. 
There was a ham I knew that kept complaining that his AD9850 DDS module was 
operating on two different frequencies, sometimes at one frequency and 
sometimes at the other.  I could not convince him that this was a result of 
aliasing WITHIN THE SCOPE itself.  He bought additional DDS modules, 
surprise!  They did exactly the same thing.  Then, he bought an old analog 
scope and no longer saw these problems.


I do have and use a USB scope "in the field", but I am careful to understand 
what that scope is telling me.  I also have a couple of analog scopes, one 
on the bench, and one portable.  I can verify questionable results with 
them.

73, Terry, N4TLF


-Original Message- 
From: James Bennett

Sent: Tuesday, September 29, 2015 5:31 PM
To: Elecraft Reflector Reflector
Subject: [Elecraft] OT USB Scope Question

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] [K3] Test Mode TX and TX Monitor?

[Steve Glickstein]

I notice this too with my K3and TXMon.  It appears to occur in the Test 
Mode after I've previously used the transmitter.  My guess is that there 
may be a capacitor or two holding some voltagefrom the prior real 
transmission. If I use the test mode first, before any transmissions, 
the PEP/SWR indicators on the TXMon are both zero.


73, Steve W4FMD


On 9/28/2015 9:40 PM, Phil Hystad wrote:

I did something tonight I have not done before since having my P3 TX Monitor in 
place.  I was testing the adjustment on my paddle in TX Test Mode and I noticed 
that the P3 acted as normal — that is, no signal — with the exception of the 
bar graph for SWR.  The bar graph registered an SWR of 3:1 (normally about 
1.1:1) in response to key down while in Test Mode.  Yet, the bar graph acts 
normally showing the correct SWR in TX mode (not test).

I would expect that the P3 would not register anything while in Test Mode TX — 
just like before hooking up the TX Monitor.

So, this is a little anomaly that others see and is this normal behavior?

Thanks,
73, phil, K7PEH

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

[Joel Black]

I have a K3 with the second receiver and I’d like to utilize it with a receive 
only antenna. I have a horrible intermittent noise that I cannot identify and 
is heard state-wide at the upper portion of 80 m. I’m hoping a small loop 
antenna might help null that noise or at least a lot of it.

I know I want a small loop. Well, maybe...

I have looked at small shielded loops, small shielded mobius loops, mag loops, 
etc.

I have a friend who came by and once recommended that I string up a random 
length loop around the top of my wooden privacy fence. Some of the privacy 
fence needs to be repaired and/or replaced. The height of the fence is about 6’ 
and I could come down 12 - 16” from the top of that and run screw-in ceramic 
insulators. Except for the portion that’s my house, the privacy fence runs the 
perimeter of my back yard.

I could use this on 160 m if I don’t use a preamp or have the preamp switched 
out.

Whichever route I take, I’ll probably use the small preamp from Kits and Parts 
at the input of the antenna.

I have access to solid conductor LMR-400, I even have about 40’ of 7/8” 
hardline, but I want something that’s not real cumbersome. I think the mag loop 
may be easier to construct but none of the small loops look extremely difficult.

I am, however, a tad confused on how to couple a shielded loop to the preamp. 
Can I just use alligator clips and run those to the shield and both conductors? 
I don’t see why I could not connect a preamp at the input to a mag loop. I 
could take the mag loop portable with me if I wanted.

I’m just looking for some advice and if y’all think this is too far off topic, 
please respond directly.

Thanks.

73,
Joel - W4JBB
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Re: [Elecraft] OT USB Scope Question

[Dale Putnam]

HI Phil,
  The PC based scopes rely in the sound card.. and from its limitations, I have 
gotten only as far as using Spectragram by Visualization Software.. 
While quite nice for what it does.. a nice Tek 2235 can't be replaced.

Have a great day, 
 
 
--...   ...--
Dale - WC7S in Wy
 
 


Subject: Re: [Elecraft] OT USB Scope Question
To: daleput...@hotmail.com
From: w...@socal.rr.com
Date: Tue, 29 Sep 2015 16:39:38 -0700


  

  
  
Dale,

  

  Seems like yours is a microscope. I think Jim was asking about
  some sort of usb oscilloscope (which I've never heard of!).

  

  73, Phil W7OX



On 9/29/15 4:25 PM, Dale Putnam wrote:



  Hi Jim,
  I have one 200 - 800X usb scope, use it every day to inspect for proper 
connections, board issues, 
and the like. It is made in china, the manual isn't. But it runs under windows 
7 - 10 and is pretty straight forward. 
Now that I have one.. not likely to work without one.

Have a great day, 
 
 
--...   ...--
Dale - WC7S in Wy
 
 



  
From: w6...@me.com
Date: Tue, 29 Sep 2015 14:31:20 -0700
To: elecraft@mailman.qth.net
Subject: [Elecraft] OT USB Scope Question

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] K3 - background hiss (noisy K3) - update

[bozidar]

Hi Dale,
tnx for interesting info - i have done this test and ranges on AF and RF
knobs are 2-240, so no problem with that.
Yes it is an early K3, S/N 28xx.
I use Sennheiser CX 300-II ear-canal phones impedance 16 Ohm - maybe is this
impedance too low,
but accordingly to the data-sheet for LM4811 that should not be the problem.
I simply dont know what that could be?
73,
Bozidar, S50BN



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Re: [Elecraft] OT USB Scope Question

[Dale Putnam]

Hi Jim,
  I have one 200 - 800X usb scope, use it every day to inspect for proper 
connections, board issues, 
and the like. It is made in china, the manual isn't. But it runs under windows 
7 - 10 and is pretty straight forward. 
Now that I have one.. not likely to work without one.

Have a great day, 
 
 
--...   ...--
Dale - WC7S in Wy
 
 


> From: w6...@me.com
> Date: Tue, 29 Sep 2015 14:31:20 -0700
> To: elecraft@mailman.qth.net
> Subject: [Elecraft] OT USB Scope Question
> 
> 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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[Elecraft] Cabela's Specials

[Fred Townsend]

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, AE6QL

-Original Message-
From: Matt Zilmer [mailto:mzil...@roadrunner.com] 
Sent: Sunday, September 27, 2015 9:38 PM
To: Fred Townsend
Cc: Elecraft Reflector
Subject: Re: [Elecraft] Cabela's Specials

Cabela's, Bass Pro, and Harbor Freight sell an ammo case that fits a
KX3 plus a few accessories (mic, KXPD3, 2m antenna [Diamond RH205], ear
buds.  It's marketed sometimes with the name Plano, but often with no
tradename.  This little case is perfect for a mobile KX3 carrier.
It's not quite proper for hiking.

This might be the 50 cal ammo can Fred is talking about, below.  The price I
paid was $9 a few years ago.

73,
matt
W6NIA

On Sun, 27 Sep 2015 17:12:05 -0600, you wrote:

>I just finished my sojourn to  Cabela's. I noticed they had a nice 
>plastic gun case with foam inserts that fit my K3. They have a credit 
>card promotion which gives $25 off your first purchase which halved the 
>price of the gun case. They also have equivalent plastic stackable 
>waterproof 50 cal ammo cases for a little over ten bucks. I'm ready for
field day now.
>
>73
>Fred, AE6QL
>
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>mzil...@roadrunner.com
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?

[Doug Ellmore]

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
mode with SSB is 2.8k hz and CW 250 hz dialed down to 50 hz.  I play with
RTTY in FSK mode at 300-400 hz.

I my main receiver I have 13k hz for FM and AM, 2.8k, 2.1k, and 250k.  In
the sub receiver I have 2.8k only.

During some DATA A modes using other digital software, I may adjust the
filter settings from 3k down.

CW Skimmer is setup to ready the main receiver, so it has 192khz decode.

Even during contests I usually keep my SSB filter settings at 2.8k and cw
at 50 hz.  With Win4K3 I can see most of what I need for CW and SSB for
both running and S


73 Doug NA1DX
www.ellmore.net/na1dx
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Re: [Elecraft] What crystal filter do you use the most?

[Robert G Strickland]

The lineup here is: 2.7 & 1.9 for ssb, 500/8pole and 200/5pole for cw. 
I'm seldom on ssb, 95%+ on cw, so can't say anything useful for the 
first two filters. I use both of the cw filters as conditions and 
circumstances dictate. The 500cps filter is first choice and does most 
of the work here. The 200cps filter is great for contest S in 
conjunction with an LPan panadapter as well as for very weak signals. 
While the DSP is undoubtedly doing the heavy lifting, I've got myself 
convinced that the 200cps filter does help when called upon.


...robert

On 9/28/2015 14:57, dw wrote:

Hello gang,
Just ordered my first K3.
I haven't ordered any filters or accessories yet.
Want to wait and see what I really will need.

I'd like to illicit your experience with the use of crystal filters for
CW.
What filter do you find you use the most and why?
I won't be using the K3 for contestingjust casual CW-only DXing and
occasional rag-chews.
Of late, I've really enjoyed getting on 40m and 30m at sunrise.

Many thanks in advance
N1BBR :-]



--
Robert G Strickland, PhD ABPH - KE2WY
rc...@verizon.net.usa
Syracuse, New York, USA
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Re: [Elecraft] K3 - background hiss (noisy K3) - update

[Ron D'Eau Claire]

An attenuator in the phones lead might be what you need. Some are available
from various audio outlets (I have an old Radio Shack - rip - one here).
Turn up the attenuation until there's no background audible and you are all
set. 

If you are handy with a soldering iron, a resistor in series with each side
of your phones will do the trick. 
 
73, Ron AC7AC

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of bozidar
Sent: Tuesday, September 29, 2015 9:53 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] K3 - background hiss (noisy K3) - update

Hi,
i have studied all the posts about this topic.
Seems, that is still, huge confusion about that, so i will try to formulate
a problem on simply way:

*With low impedance earphones plugged into the audio jack on the K3, you can
hear a really annoying noise (hiss) even with the AF and RF volume set to
zero(CCW). This audio hiss has a constant level, is added to the audible RF
noise and can prevent one from hearing weak  signals on an otherwise quiet
band.*

That hiss has nothing to do with K3 receiver or settings - simply is
permanent present.
This indicate that something must be wrong with earphones amplifier
LM4811MM, and that is odd, because LM4811MM seems to be an high quality
chip, designed exactly to work with low impedance earphones , with a minimal
amount of external components?
My question is:
is, in the mean time, known any hardware (or anything else) modification for
that issue?

best regards,
Bozidar



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Re: [Elecraft] K- Line & Microkeyer II interfaces

[Joe Subich, W4TV]

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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Re: [Elecraft] No power out and no receive

[Don Wilhelm]

Which Elecraft transceiver?  Kit or factory built?  Was it working 
before or has it never worked properly?


73,
Don W3FPR

On 9/29/2015 11:29 PM, way235 wrote:

I have noise on all bands but don't hear any signals at all.
I have a TX light when keyed and can see the meter move when I speak into
the mic but I have no power output.



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Re: [Elecraft] No power out and no receive

[David Pratt]

What is the serial number of your transceiver and do you have a callsign?  
Also, what revision of the manual do you have? With that information there are 
lots of people on here able to help you.

73 de David G4DMP

On 30 Sep 2015 04:29, way235  wrote:
>
> I have noise on all bands but don't hear any signals at all. 
> I have a TX light when keyed and can see the meter move when I speak into 
> the mic but I have no power output.
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Re: [Elecraft] OT USB Scope Question

[dw]

Hi Jim,
For a number of years I used a Fluke 97B 50 mhz scope.
Picked it up for $50 bucks on Ebay and used it for a number of years
then sold it for $50 bucks.  :-]
There are some youtube reviews of PC type scopes you might check out.
Best!
N1BBR

-- 
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Re: [Elecraft] OT USB Scope Question

[James Bennett]

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

[way235]

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] [K3] Test Mode TX and TX Monitor?

[Alan]

On 09/29/2015 04:26 PM, Phil Hystad wrote:


The
bar graph registered an SWR of 3:1 (normally about 1.1:1) in
response to key down while in Test Mode.  Yet, the bar graph acts
normally showing the correct SWR in TX mode (not test).


In test mode there is no power out of the K3.  The SWR calculation gets 
confused when both forward and reflected power are zero.  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
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Re: [Elecraft] [K3] Test Mode TX and TX Monitor?

[Bob McGraw - K4TAX]

At what power level do you see or measure this signal?  I don't seem to 
see any power output in TEST mode during transmit.


73
Bob, K4TAX

On 9/29/2015 12:23 PM, Dan Atchison wrote:

Phil:

Do you have a K3S by any chance.  My K3S actually transmits a signal 
when in TEST mode!  When I told Elecraft about it, they shrugged their 
heads like it can't be.


The TX power appears both on my P3 (with TX MON showing both PEP and 
SWR), and also my LP-100A wattmeter.  It's only very, very short  
bursts of my CW sent signal, but it's there.  My K3 does not do this.


As mentioned, I see this with TEST on and either VOX on or off. Have 
never noticed on sideband.





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

[Bob McGraw - K4TAX]

OK Phil.  I supposed I was confused where you said " My K3S actually 
transmits a signal when in TEST mode!"   I didn't find any measurable 
output when in TEST mode using my K3S.


Thanks.

73
Bob, K4TAX

On 9/29/2015 12:52 PM, Phil Hystad wrote:

In Test mode there is no signal output at all.  That is the reason for Test 
Mode.  So, on the P3, you don’t see a signal and you don’t see signal power 
level.  But, the fact that the SWR bar chart shows something is, to me, an 
anomaly.

73, phil



>On Sep 29, 2015, at 10:34 AM, Bob McGraw - K4TAX  wrote:
>
>At what power level do you see or measure this signal?  I don't seem to see 
any power output in TEST mode during transmit.
>
>73
>Bob, K4TAX
>
>On 9/29/2015 12:23 PM, Dan Atchison wrote:

>>Phil:
>>
>>Do you have a K3S by any chance.  My K3S actually transmits a signal when in 
TEST mode!  When I told Elecraft about it, they shrugged their heads like it can't be.
>>
>>The TX power appears both on my P3 (with TX MON showing both PEP and SWR), 
and also my LP-100A wattmeter.  It's only very, very short  bursts of my CW sent 
signal, but it's there.  My K3 does not do this.
>>
>>As mentioned, I see this with TEST on and either VOX on or off. Have never 
noticed on sideband.



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

[Dan Atchison]

Phil:

Do you have a K3S by any chance.  My K3S actually transmits a signal 
when in TEST mode!  When I told Elecraft about it, they shrugged their 
heads like it can't be.


The TX power appears both on my P3 (with TX MON showing both PEP and 
SWR), and also my LP-100A wattmeter.  It's only very, very short  bursts 
of my CW sent signal, but it's there.  My K3 does not do this.


As mentioned, I see this with TEST on and either VOX on or off. Have 
never noticed on sideband.



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

[Phil Hystad]

In Test mode there is no signal output at all.  That is the reason for Test 
Mode.  So, on the P3, you don’t see a signal and you don’t see signal power 
level.  But, the fact that the SWR bar chart shows something is, to me, an 
anomaly.

73, phil


> On Sep 29, 2015, at 10:34 AM, Bob McGraw - K4TAX  wrote:
> 
> At what power level do you see or measure this signal?  I don't seem to see 
> any power output in TEST mode during transmit.
> 
> 73
> Bob, K4TAX
> 
> On 9/29/2015 12:23 PM, Dan Atchison wrote:
>> Phil:
>> 
>> Do you have a K3S by any chance.  My K3S actually transmits a signal when in 
>> TEST mode!  When I told Elecraft about it, they shrugged their heads like it 
>> can't be.
>> 
>> The TX power appears both on my P3 (with TX MON showing both PEP and SWR), 
>> and also my LP-100A wattmeter.  It's only very, very short  bursts of my CW 
>> sent signal, but it's there.  My K3 does not do this.
>> 
>> As mentioned, I see this with TEST on and either VOX on or off. Have never 
>> noticed on sideband.
>> 
> 
> 
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[Elecraft] K3 PSK filtering

[RICHARD SCHMIEDT]

I have a K3 S/N  abt 5000 which has both main and subreceivers with all recent 
mods including new synth boards. The filters are all 8 pole -- main 
configuration is 2.8, 1.8, 400, 250.  Sub receiver is 2.8 and 400.  All are 
correctly configured via the K3 utility and have given me no problems on CW, 
SSB and RTTY.  
However, on PSK31 I noticed last night that the IF BW only works in the 50 and 
100 Hz positions where all seems well and the PSK is correctly decoded.  But at 
150Hz, there is no signal at all, and above 150 the signals sound like they are 
outside the filter skirts. This is using just the main RX. 
I seem to remember PSK BW being seamlessly adjustable from 2.8 thru 50 Hz in my 
original K3 configuration, but many mods and firmware updates have come and 
gone.  Was something changed that I missed and  this is the way PSK should be 
working, or is something amiss??
Thanks all,RickW4GE
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Re: [Elecraft] [K3] Test Mode TX and TX Monitor?

[Phil Hystad]

Actually, I don’t have a K3S.  Though, I do see another message quoted below 
from Dan Atchison who mentions a K3S transmitting a signal in Test mode.  No 
signal on a K3 though.

73, phil


> On Sep 29, 2015, at 11:03 AM, Bob McGraw - K4TAX  wrote:
> 
> OK Phil.  I supposed I was confused where you said " My K3S actually 
> transmits a signal when in TEST mode!"   I didn't find any measurable output 
> when in TEST mode using my K3S.
> 
> Thanks.
> 
> 73
> Bob, K4TAX
> 
> On 9/29/2015 12:52 PM, Phil Hystad wrote:
>> In Test mode there is no signal output at all.  That is the reason for Test 
>> Mode.  So, on the P3, you don’t see a signal and you don’t see signal power 
>> level.  But, the fact that the SWR bar chart shows something is, to me, an 
>> anomaly.
>> 
>> 73, phil
>> 
>> 
>>> >On Sep 29, 2015, at 10:34 AM, Bob McGraw - K4TAX  
>>> >wrote:
>>> >
>>> >At what power level do you see or measure this signal?  I don't seem to 
>>> >see any power output in TEST mode during transmit.
>>> >
>>> >73
>>> >Bob, K4TAX
>>> >
>>> >On 9/29/2015 12:23 PM, Dan Atchison wrote:
 >>Phil:
 >>
 >>Do you have a K3S by any chance.  My K3S actually transmits a signal 
 >>when in TEST mode!  When I told Elecraft about it, they shrugged their 
 >>heads like it can't be.
 >>
 >>The TX power appears both on my P3 (with TX MON showing both PEP and 
 >>SWR), and also my LP-100A wattmeter.  It's only very, very short  bursts 
 >>of my CW sent signal, but it's there.  My K3 does not do this.
 >>
 >>As mentioned, I see this with TEST on and either VOX on or off. Have 
 >>never noticed on sideband.
> 
> 

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

[Ignacy]

I do not notice any hiss with K3 with any headphones. I noticed hiss with
other radios.
Ignacy, NO9E 



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

[Dan Atchison]

To answer a few questions, I'll try to be as definitive as possible.

I see, according to both the P3 TX Mon AND the LP-100A up to about 0.4 
watts output from the K3S on CW mode in TEST.  The sensors for both the 
TX Mon and the LP-100A are in series, the TX Mon immediately after the 
K3S and the LP-100A through a short piece of RG-400.  If I substitute 
the K3 for the K3S, there is no indication on either "wattmeter."  So 
methinks that this proves an issue with the K3S.


Also what is interesting is if I monitor the K3S signal (while in TEST 
mode) on the K3, the signal level pins the meter on the K3. Reverse (the 
K3 transmitting in TEST MODE to the K3S), it's about S7.  Not a great 
test, but significant I think. It's almost like a short spike of power 
is output (as indicated on the P3 TX Mon and LP-100A).  I contacted a 
local ham but he cannot hear any transmitted signal (he's about 7 air 
miles away), but methinks it's a spike of such short duration or 
generation that he wouldn't.


I am also seeing an anomaly with the K3S that I have yet to fully 
understand and as far as I can tell happens only on 80M.


I run SO2R and have bandpass filters between the K3S and K3 and their 
respective amplifiers.  On 80M, and according to the internal K3S 
wattmeter, I have a 1:1 swr going into the bandpass filter but as soon 
as the rig output is set to above 12 watts, i.e. the KPA3A kicks in, the 
SWR immediately rises to 5:1.  The SWR remains high until I increase the 
power up to about an indicated 45 W output (by virtue of the power 
control on the K3S), then the SWR immediately reduces back to 1:1 and 
remains there to max power output.  Of course the "real" power output is 
cut back until the SWR goes down.  So, you say, it's the bandpass 
filter.  Perhaps, but I have swapped bandpass filters and the problem 
remains with the K3S.  I have also eliminated the amplifiers by 
installing a dummy load in their place.  I did this to make sure the 
KPA3A was not transmitting a dirty signal on some other frequency 
against a resonant 80M antenna.  Same issue.  There are no issues with 
the K3 in line - it's only the K3S.


I realize, because the K3S has the new KAT3A with a bypass relay as well 
as the upgraded KPA3A, that things are different than the K3, but 
still???  Some kind of matching anomaly?


I plan on sending the K3S back to Elecraft to witness this (and yes, I 
will include the bandpass filter), but rumor has it that their repair 
center is backlogged and it's too close to contest season to risk being 
without.  My K3S works fine except for these problems.


73,
Dan


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

[d...@lightstream.net]

Hello Bozidar,

I suspect that the issue may be particular to your particular K3. You did
not mention the S/N range of your radio, and I may be incorrect about this
but I think that very early K3's had an issue similar to this, that was
quickly resolved.

The S/N of my K3 is in the 58XX range, and I have never heard any of the
hiss that you describe. I have a pair of Grado SR225e headphones that have
an impedance of 32 ohms, and are very sensitive. I plugged them into the
Phones jack on the front of the K3, and with the AF gain control turned
fully CCW, there is no hiss or for that matter any sound at all.

It's possible that there is an issue with your AF Gain control/encoder.
You might want to use the built-in test that allows you to check the
encoder steps of the two AF gain and two RF gain controls that is
available from the CONFIG > SW TEST menu on the radio. This requires that
you first make sure that "Tech Mode" is enabled. To do so, go to CONFIG >
TECH MD and then turn your VFO-A dial so that "On" shows above TECH MD on
your K3. Then, rotate your VFO-B dial to navigate over to the "SW TEST"
menu option. Then slowly rotate your AF Gain control on the K3. You should
see the encoder steps (visible on your K3 display) increasing in number as
you rotate it clockwise, and decreasing in number as you rotate it CCW. In
my case, rotating the AF Gain control fully CCW shows a step of 2. If your
value is higher than that at fully CCW, perhaps your AF Gain encoder has a
problem.

73,

Dale, WA8SRA


> Hi,
> i have studied all the posts about this topic.
> Seems, that is still, huge confusion about that, so i will try to
> formulate
> a problem on simply way:
>
> *With low impedance earphones plugged into the audio jack on the K3, you
> can
> hear a really annoying noise (hiss) even with the AF and RF volume set to
> zero(CCW). This audio hiss has a constant level, is added to the audible
> RF
> noise and can prevent one from hearing weak  signals on an otherwise quiet
> band.*
>
> That hiss has nothing to do with K3 receiver or settings - simply is
> permanent present.
> This indicate that something must be wrong with earphones amplifier
> LM4811MM, and that is
> odd, because LM4811MM seems to be an high quality chip, designed exactly
> to
> work with low impedance earphones , with a minimal amount of external
> components?
> My question is:
> is, in the mean time, known any hardware (or anything else) modification
> for
> that issue?
>
> best regards,
> Bozidar
>

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Re: [Elecraft] K3/P3 External Keyboard Question

[Paul Saffren N6HZ]

Check to make sure you do not have a blank macro or blank text message 
set up for those keys.

To check the text messages:  Press Ctrl-Alt-T and then use the up/down 
arrows to scroll through the list, look for the 1, 2 or 3 keycode.
To check the macros:  Press Ctrl-Alt-M and then do the same thing.

Did you buy the P3 used?

-Paul

Paul Saffren - N6HZ
Project Manager
Elecraft Inc.
831-763-4211 x122
www.elecraft.com

On 9/28/2015 6:00 PM, Paul Matthews [via Elecraft] wrote:
> Hello:
>
> I have a K3 and P3. I am using a Logitech K120 external keyboard 
> connected to the P3.
> While in the CQ WW Contest I noticed that the 1,2,3 keys (above 
> letters)did not work (type info to screen).
> It was a new keyboard so for $10 I figured it was defective. Returned 
> it for a $3 more expensive K120 keyboard.
> The 1 & 2, and D keys do not work. The numerical key (far right side) 
> all work.
> Anyone have any ideas?
> Thank you 73 Paul KB4GYT
>
>
> 
> If you reply to this email, your message will be added to the 
> discussion below:
> http://elecraft.365791.n2.nabble.com/K3-P3-External-Keyboard-Question-tp7608469.html
>  
>
> To unsubscribe from [P3], click here 
> .
> NAML 
> 
>  
>





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

[Wes (N7WS)]

If I had to guess, which is exactly what I'm doing, I think either the LPA or 
the HPA is generating a spurious signal and it sees a mismatch into your BPF.  I 
would try to get it into this state and use your other radio to sniff around.



On 9/29/2015 11:59 AM, Dan Atchison wrote:

To answer a few questions, I'll try to be as definitive as possible.

I see, according to both the P3 TX Mon AND the LP-100A up to about 0.4 watts 
output from the K3S on CW mode in TEST.  The sensors for both the TX Mon and 
the LP-100A are in series, the TX Mon immediately after the K3S and the 
LP-100A through a short piece of RG-400.  If I substitute the K3 for the K3S, 
there is no indication on either "wattmeter."  So methinks that this proves an 
issue with the K3S.


Also what is interesting is if I monitor the K3S signal (while in TEST mode) 
on the K3, the signal level pins the meter on the K3. Reverse (the K3 
transmitting in TEST MODE to the K3S), it's about S7.  Not a great test, but 
significant I think. It's almost like a short spike of power is output (as 
indicated on the P3 TX Mon and LP-100A).  I contacted a local ham but he 
cannot hear any transmitted signal (he's about 7 air miles away), but methinks 
it's a spike of such short duration or generation that he wouldn't.


I am also seeing an anomaly with the K3S that I have yet to fully understand 
and as far as I can tell happens only on 80M.


I run SO2R and have bandpass filters between the K3S and K3 and their 
respective amplifiers.  On 80M, and according to the internal K3S wattmeter, I 
have a 1:1 swr going into the bandpass filter but as soon as the rig output is 
set to above 12 watts, i.e. the KPA3A kicks in, the SWR immediately rises to 
5:1.  The SWR remains high until I increase the power up to about an indicated 
45 W output (by virtue of the power control on the K3S), then the SWR 
immediately reduces back to 1:1 and remains there to max power output.  Of 
course the "real" power output is cut back until the SWR goes down.  So, you 
say, it's the bandpass filter. Perhaps, but I have swapped bandpass filters 
and the problem remains with the K3S.  I have also eliminated the amplifiers 
by installing a dummy load in their place.  I did this to make sure the KPA3A 
was not transmitting a dirty signal on some other frequency against a resonant 
80M antenna.  Same issue.  There are no issues with the K3 in line - it's only 
the K3S.


I realize, because the K3S has the new KAT3A with a bypass relay as well as 
the upgraded KPA3A, that things are different than the K3, but still???  Some 
kind of matching anomaly?


I plan on sending the K3S back to Elecraft to witness this (and yes, I will 
include the bandpass filter), but rumor has it that their repair center is 
backlogged and it's too close to contest season to risk being without.  My K3S 
works fine except for these problems.


73,
Dan



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Re: [Elecraft] [K3S] WinWarbler and RTTY (FSK)

[Bill Conkling]

I got it!

Thanks to all.  I finally got the darn thing working.  Went into the MMTTY 
settings box and set “sound+com(FSK)” os similar and all is now working.  Made 
several QSOs and then went to PSK.

Thanks…

…bill nr4c


> On Sep 24, 2015, at 4:00 PM, Bill Conkling  wrote:
> 
> I have been trying to get DXLabs (WinWarbler) to transmit FSK with no luck so 
> far.  I believe I have the settings right but so far no diddles.  I hear a 
> tone in the speaker and the TX LED lights up and the screen show that I am 
> transmitting, but no power out.  I am sure it is something simple but I can’t 
> seem to find it.  Oh, the screen also shows RTTY TX (Soundcard-FSK), and that 
> seems wrong.
> 
> thnx
> 
> …bill  nr4c
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Re: [Elecraft] [K3] Test Mode TX and TX Monitor?

[Wayne Burdick]

Dan,

This is very odd behavior. There should be no output in TEST mode, and no 
contribution to SWR from the KAT3A. The two problems may be related.

I hope you can return the rig to us for analysis. It will of course be covered 
under warranty.

73,
Wayne
N6KR

On Sep 29, 2015, at 11:59 AM, Dan Atchison  wrote:

> To answer a few questions, I'll try to be as definitive as possible.


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[Elecraft] K3 PSK Filtering

[RICHARD SCHMIEDT]

Not in Data A mode.  Using Data Xmit and PSK31 for Data MD and using P3 SVGA 
for keyboard.  No external software.  
 Just tried it again for first time today and all seems well -- I can adjust IF 
BW seamlessly from 50 Hz to 2.8kHz.  Apparently it was a fluke that was 
corrected overnight by a gremlin that felt guilty or by turning the K3/P3 on 
and off.  Sorry for all the commotion.
Thanks guys,Rick W4GE
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[Elecraft] MMTTY & K3 not RX

[Jorge Diez - CX6VM]

Hello

 

After a good attempt last weekend to do RTTY, now I don´t know why I am not
receiving any RTTY

 

I am using K3 + N1MM + MMTTY

 

I tested with cables direct to notebook and on a Tascam US-125M and I can
transmit but both are not receiving. 

 

Any idea about that?

 

Thanks in advance

 

73,

Jorge

CX6VM/CW5W



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