Re: [Elecraft] Power source for KAT500

[Don Wilhelm]

Sid,

The KPA500 requires up to 1 amp when tuning.  If you have nothing else 
connected to the AUX 12V on the K3/K3S, then that can power the KAT500. 
If the AUX 12V is being used by some other device (P3 for instance), 
then you can wire the KAT500 to the same power supply that is powering 
the K3/K3S.


73,
Don W3FPR

On 8/23/2017 11:44 PM, Sid Frissell wrote:

Just got my new KAT/KPA500 on the August Special.  I have both units all wired, 
tested and ready to go except for the 12 to 15 VDC power connection for the 
KAT500.  What are you experienced KAT/KPA owners using for this power source?  
What amperage is required?  Advice would be appreciated, please.

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Re: [Elecraft] K3S with an external receiver

[Don Wilhelm]

Jeff,

The only way to do that properly is to use a 3dB splitter external to 
the K3S and the 590SG.
Of course, that is only for receive.  On transmit, the 3dB splitter 
would have to be removed and the input to the 2nd receiver protected.


The K3S does that internally with the addition of the SubRX, and it is 
done automatically if the SubRX is sharing the antenna with the main RX. 
 You would have to provide the same switching externally to use an 
external receiver.


The other way (more simplistic) is to connect the other receiver to the 
K3S RX ANT OUT jack.  That allows the external receiver to listen on the 
same band or a lower band than the K3S is tuned to.  Signals on a higher 
band than the K3S is tuned to will be attenuated because the K3S Low 
Pass Filters are ahead of the other receiver.


73,
Don W3FPR

On 8/24/2017 12:00 AM, JEAN-FRANCOIS wrote:

Hi,

Is there anybody ever use an external receiver with a K3S as a second receiver… 
to act as a second receiver that can share the same antenna the K3S use or 
similar setup???

The reason here is I still a have my Kenwood 590SG that I could enable TX 
Inhibit for safety, and use it as a second receiver only. It’s an excellent 
backup radio. I wondering if I could enhance my setup if possible by using 
spare gears.

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Re: [Elecraft] Power source for KAT500

[Rose]

As stated in the manual ... which it's assumed you have ... 12VDC @ 1 A
max, 200 Ma typical.

73

K0PP



On Aug 23, 2017 21:46, "Sid Frissell"  wrote:

> Just got my new KAT/KPA500 on the August Special.  I have both units all
> wired, tested and ready to go except for the 12 to 15 VDC power connection
> for the KAT500.  What are you experienced KAT/KPA owners using for this
> power source?  What amperage is required?  Advice would be appreciated,
> please.
>
> Sid. NZ7M
>
> Sent From Sid Frissell's iPad
> __
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Re: [Elecraft] Power source for KAT500

[Ken K6MR]

Assuming it is in the vicinity of the K3, use the station power supply.  If 
it’s somewhere else, just about any wall wart will work.  Spec is 200 mA typ., 
1.0A max.

Ken K6MR

From: Sid Frissell
Sent: Wednesday, August 23, 2017 20:46
To: Elecraft@mailman.qth.net
Subject: [Elecraft] Power source for KAT500

Just got my new KAT/KPA500 on the August Special.  I have both units all wired, 
tested and ready to go except for the 12 to 15 VDC power connection for the 
KAT500.  What are you experienced KAT/KPA owners using for this power source?  
What amperage is required?  Advice would be appreciated, please.

Sid. NZ7M

Sent From Sid Frissell's iPad
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[Elecraft] K3S with an external receiver

[JEAN-FRANCOIS]

Hi,

Is there anybody ever use an external receiver with a K3S as a second receiver… 
to act as a second receiver that can share the same antenna the K3S use or 
similar setup???

The reason here is I still a have my Kenwood 590SG that I could enable TX 
Inhibit for safety, and use it as a second receiver only. It’s an excellent 
backup radio. I wondering if I could enhance my setup if possible by using 
spare gears.

Best 73 de Jeff | VA2SS

__
Jeff | VA2SS
Jean-François Ménard

jean-francois.men...@va2ss.com
www.VA2SS.com

Message envoyé à partir de mon appareil mobile.
Message sent from my portable device.

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[Elecraft] Power source for KAT500

[Sid Frissell]

Just got my new KAT/KPA500 on the August Special.  I have both units all wired, 
tested and ready to go except for the 12 to 15 VDC power connection for the 
KAT500.  What are you experienced KAT/KPA owners using for this power source?  
What amperage is required?  Advice would be appreciated, please.

Sid. NZ7M

Sent From Sid Frissell's iPad
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Re: [Elecraft] [KX3] Band Plans

[Charlie T, K3ICH]

Is  Russian TV still on 48 or so MHz.?  They've probably also gone digital.
I remember listening for that TV picture buzz as an indicator that the MUF was 
creeping up.

73, Charlie k3ICH

-Original Message-
From: elecraft-boun...@mailman.qth.net 
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Phil Kane
Sent: Wednesday, August 23, 2017 9:47 PM
To: Todd ; k2...@arrl.net
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] [KX3] Band Plans

On 8/23/2017 5:44 PM, Todd wrote:

> When I hear statewide CHP comms, or other state low band Highway 
> Patrol,  I know that something is happening on six...

In 1959 at the peak of the sunspot cycle, the Los Angeles Sheriff's Department 
main dispatch was co-channel with the NYPD dispatch channel for the Brooklyn 
Borough Command (39.58 IIRC).  At the time I was a reserve deputy with the LASO 
 and we would generally hear the NYPD calls in the daytime.  I had no problem 
with that because I grew up in Brooklyn and recognized both the accent and the 
street names!

At the time I was still a Tech and had no HF privileges and of course Elecraft 
was not in existence. Six meters was not in general use in both the LA and the 
NY areas because TV Channel 2 was in use locally (CBS O).

73 de K2ASP - Phil Kane
Elecraft K2/100   s/n 5402

>From a Clearing in the Silicon Forest
Beaverton (Washington County) Oregon
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Re: [Elecraft] [KX3] Band Plans

[Phil Kane]

On 8/23/2017 5:44 PM, Todd wrote:

> CHP has totally upgraded their system.  They use 39,42,44, and 45MHZ
> inputs/outputs.

For decades, FCC Rules precluded Low-VHF in-band repeaters so the bases
are licensed as FB ("Fixed Base") rather than FB2 ("Mobile Relay").  A
difference without a distinction.

73 de K2ASP - Phil Kane
Elecraft K2/100   s/n 5402

From a Clearing in the Silicon Forest
Beaverton (Washington County) Oregon
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[Elecraft] OT: [KX3] Band Plans

[Ken G Kopp]

Years ago the local law enforcement used 34.980 (simplex) and of course was
often plagued by "skip" from other areas.  There was no CTCSS then and
their solution was to change the 10 code to 9 code.  10-8 became 9-8, etc.

73

K0PP

On Aug 23, 2017 19:47, "Phil Kane"  wrote:

On 8/23/2017 5:44 PM, Todd wrote:

> When I hear statewide CHP comms, or other state low band Highway
> Patrol,  I know that something is happening on six...

In 1959 at the peak of the sunspot cycle, the Los Angeles Sheriff's
Department main dispatch was co-channel with the NYPD dispatch channel
for the Brooklyn Borough Command (39.58 IIRC).  At the time I was a
reserve deputy with the LASO  and we would generally hear the NYPD calls
in the daytime.  I had no problem with that because I grew up in
Brooklyn and recognized both the accent and the street names!

At the time I was still a Tech and had no HF privileges and of course
Elecraft was not in existence. Six meters was not in general use in both
the LA and the NY areas because TV Channel 2 was in use locally (CBS O).

73 de K2ASP - Phil Kane
Elecraft K2/100   s/n 5402

>From a Clearing in the Silicon Forest
Beaverton (Washington County) Oregon
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Re: [Elecraft] [KX3] Band Plans

[Phil Kane]

On 8/23/2017 5:44 PM, Todd wrote:

> When I hear statewide CHP comms, or other state low band Highway
> Patrol,  I know that something is happening on six...

In 1959 at the peak of the sunspot cycle, the Los Angeles Sheriff's
Department main dispatch was co-channel with the NYPD dispatch channel
for the Brooklyn Borough Command (39.58 IIRC).  At the time I was a
reserve deputy with the LASO  and we would generally hear the NYPD calls
in the daytime.  I had no problem with that because I grew up in
Brooklyn and recognized both the accent and the street names!

At the time I was still a Tech and had no HF privileges and of course
Elecraft was not in existence. Six meters was not in general use in both
the LA and the NY areas because TV Channel 2 was in use locally (CBS O).

73 de K2ASP - Phil Kane
Elecraft K2/100   s/n 5402

From a Clearing in the Silicon Forest
Beaverton (Washington County) Oregon
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Re: [Elecraft] Noise Reduction

[K9MA]

Impulse noise gets stretched out in time when passed through a narrow 
filter, so it must be removed ahead of the narrow filter.  This is true 
whether in hardware or software.  Since this is a very common type of 
man-made noise, effectively removing or reducing it would be very 
useful.  I can't see how this could possibly be done in the audio 
range.  It could, perhaps, at baseband in a direct sampling receiver.


In any case, a future Elecraft radio which could effectively reduce 
impulse noise when a band is full of strong signals would be very 
attractive, especially to urban hams.  One scheme used long ago was to 
use a second receiver, tuned a bit out of the band to a relatively clear 
segment, to control a noise blanker in the main receiver.  Could 
Elecraft possibly add a mode to use the sub-receiver in this manner?  
Or, because the noise-sensing receiver doesn't have to have great 
selectivity, perhaps a dedicated receiver could be offered.


73,

Scott K9MA


On 8/23/2017 19:20, Kevin der Kinderen wrote:

Maybe the additional noise in the stages between where the filter would be
in IF and where it is in AF? I know I'm thinking of multi-stage RF/IF/AF
superhets and that might be what is tripping me up when it comes to a
single conversion SDR capability. Maybe there is no difference? Or maybe
components that make up a filter in an IF stage are more effective (higher
Q) than in an audio stage?

73,
Kev K4VD

On Wed, Aug 23, 2017 at 7:58 PM, Fred Jensen  wrote:


Doesn't appear to say very much.  Other than the BW difference [RF/IF BW
might be more than ultimate AF BW], and provided that the demodulated audio
is free of IMD and other obnoxious distortion, I don't see why NR at AF
wouldn't be essentially the same as at IF.  Obvious differences in the
mechanisms to do it, and I'm sure there are dozens of nits that will be
picked over this, but if you can find the signal in the noise [or the noise
obscuring the signal] at the IF frequency, I can't see any reason why you
can't do it at AF just as well.

73,

Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

On 8/23/2017 4:06 PM, Walter Underwood wrote:


Discussion appears to be here.

https://uk.groups.yahoo.com/neo/groups/SNR_group/info?v=1=
directory=web=groups=dir=363  <
https://uk.groups.yahoo.com/neo/groups/SNR_group/info?v=1
=directory=web=groups=dir=363>

wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/  (my blog)


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--
Scott  K9MA

k...@sdellington.us

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Re: [Elecraft] [KX3] Band Plans

[Todd]

CHP has totally upgraded their system.  They use 39,42,44, and 45MHZ 
inputs/outputs.
Most dispatch comm centers, but not up here in extreme NorCal, repeat 
the mobiles on

the main base dispatch channel.  Makes it easier to listen to both sides.

They run their extenders in the 700MHZ range using P25 digital.  They 
were supposed
to upgrade the whole system to a statewide 700MHZ P25 digital system 
covering

the whole state.  But, no money $$$.  Imagine that!

No more extenders on the old 154.905 freq (was a poor man's radar radar 
detector!)  ;-)


When I hear statewide CHP comms, or other state low band Highway 
Patrol,  I know

that something is happening on six...

Todd KH2TJ


Phil Kane wrote:

On 8/22/2017 2:14 PM, Walter Underwood wrote:

   

The California Highway Patrol holds on to their 47 MHz frequencies for the same 
reason.
 


42 MHz.  Augmented by a whole system of VHF and UHF portables working
through in-car repeaters into and out of the 42 MHz network.

   

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Re: [Elecraft] Noise Reduction

[Kevin der Kinderen]

Maybe the additional noise in the stages between where the filter would be
in IF and where it is in AF? I know I'm thinking of multi-stage RF/IF/AF
superhets and that might be what is tripping me up when it comes to a
single conversion SDR capability. Maybe there is no difference? Or maybe
components that make up a filter in an IF stage are more effective (higher
Q) than in an audio stage?

73,
Kev K4VD

On Wed, Aug 23, 2017 at 7:58 PM, Fred Jensen  wrote:

> Doesn't appear to say very much.  Other than the BW difference [RF/IF BW
> might be more than ultimate AF BW], and provided that the demodulated audio
> is free of IMD and other obnoxious distortion, I don't see why NR at AF
> wouldn't be essentially the same as at IF.  Obvious differences in the
> mechanisms to do it, and I'm sure there are dozens of nits that will be
> picked over this, but if you can find the signal in the noise [or the noise
> obscuring the signal] at the IF frequency, I can't see any reason why you
> can't do it at AF just as well.
>
> 73,
>
> Fred ["Skip"] K6DGW
> Sparks NV DM09dn
> Washoe County
>
> On 8/23/2017 4:06 PM, Walter Underwood wrote:
>
>> Discussion appears to be here.
>>
>> https://uk.groups.yahoo.com/neo/groups/SNR_group/info?v=1=
>> directory=web=groups=dir=363  <
>> https://uk.groups.yahoo.com/neo/groups/SNR_group/info?v=1
>> =directory=web=groups=dir=363>
>>
>> wunder
>> K6WRU
>> Walter Underwood
>> CM87wj
>> http://observer.wunderwood.org/  (my blog)
>>
>
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Re: [Elecraft] Noise Reduction

[Fred Jensen]

Doesn't appear to say very much.  Other than the BW difference [RF/IF BW 
might be more than ultimate AF BW], and provided that the demodulated 
audio is free of IMD and other obnoxious distortion, I don't see why NR 
at AF wouldn't be essentially the same as at IF.  Obvious differences in 
the mechanisms to do it, and I'm sure there are dozens of nits that will 
be picked over this, but if you can find the signal in the noise [or the 
noise obscuring the signal] at the IF frequency, I can't see any reason 
why you can't do it at AF just as well.


73,

Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

On 8/23/2017 4:06 PM, Walter Underwood wrote:

Discussion appears to be here.

https://uk.groups.yahoo.com/neo/groups/SNR_group/info?v=1=directory=web=groups=dir=363  


wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/  (my blog)


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Re: [Elecraft] Noise Reduction

[Walter Underwood]

Discussion appears to be here.

https://uk.groups.yahoo.com/neo/groups/SNR_group/info?v=1=directory=web=groups=dir=363
 


wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)

> On Aug 23, 2017, at 4:01 PM, Scott  wrote:
> 
> Is there a website or software repository yet?
> 
> Scott
> AD5HS
> 
> On 8/23/2017 12:24 PM, P.J.Hicks wrote:
>> I have been involved with a project developed by Peter Rhodes of the UK that 
>> started as a way to improve the NR in his Pick a Star trx. It appears that 
>> the project is nearing the limits of what can be done and will hopefully go 
>> public soon. The project is called nitPic and operates on the audio output 
>> (phones) under Peter's software. It is truly amazing what it can do. Briefly 
>> it has two modes, SSB and CW. It processes the audio in 'bins' or slices. As 
>> each bin is processed the SW decides if it is signal or noise; if signal it 
>> is enhanced and if noise it is reduced. Sounds simple. It almost completely 
>> eliminates a CW signal if in SSB mode and vice versa eliminates a SSB signal 
>> if in CW mode. I have been able to bring out CW signals from the noise floor 
>> that do not show the slightest trace on my PowerSDR waterfall/spectrum 
>> display.
>> So good things are happening and improvements are in the works.
>> PJH, N7PXY
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Re: [Elecraft] Surprising Behavior on KX3 KXPA100 Combo

[Phil Hystad]

My own answer to my first weird thing in message below:

Apparently, if you press/HOLD the Keyer/Mic/PWR button to display the power 
level, it takes another key press to revert from that action.  It was not 
merely the band switch that would not function but any key press had the same 
result — which was, that function key did not operate other than to revert the 
PWR display back to whatever was displayed prior to the press/HOLD on the 
../PWR button.

I assume that this might be normal behavior, possibly thinking that most people 
would depress the same ../PWR button again to move out of that state.

ALSO, clarification on the second weird thing:

To reproduce this behavior of the power output shown one green light on the 
power LED display of the KXPA100, do the following:

Seems to work this way because I have two antennas, one for 80 thru 30 and the 
other for 20 thru 10.  So,

—> Switch antennas (either Ant 1 to 2 or Ant 2 to 1)
—> Tune using the ATU Tune button.
—> key down once (I send a dash using my paddle)
—> result is only one green LED light lit up on Power LED Display of KXPA100.
—> key down again, same thing, without needing any other button pushes and 
normal
  display of 100 watts is shown on KXPA100 power LED lights.

73, phil, K7PEH


> On Aug 23, 2017, at 12:32 PM, Phil Hystad  wrote:
> 
> I have configured my KX3 with my KXPA100 (previously used only with KX2) 
> following all instructions (I think) in the KXPA100 user manual.
> 
> First comment — everything works, antenna tuner on KXPA100 works, power out 
> 100 watts on all bands, and so on.
> 
> Weird stuff:
> 
> 1.  I Held Keyer/Mic/PWR button for power display, showing 100 watts.  Then, 
> I immediately pushed Band+ to switch up to next band.  No band switching too 
> place but the display changed from 100 watts on KX3 back to the clock.  
> Pressing Band+ once more results in band switching as expected.  This happens 
> every time in the sequence I describe and I am wondering if (a) this is 
> normal, (b) something is not yet configured correctly.
> 
> 
> 2.  My reason for Hold on Keyer/Mic/PWR to display power is because after 
> switching bands and after tuning the antenna for a low SWR (about 1.1:1) the 
> power output was only about 10 watts.  I did a Hold on Keyer/Mic/PWR to see 
> the power output and it was indeed 100 watts and not 10.  I then keyed down 
> and then the output was 100 watts.  This does not seem normal to me.
> 
> None of these two behaviors occurred on my KX2.
> 
> Any ideas or comments?
> 
> 73, phil, K7PEH
> 
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Re: [Elecraft] Noise Reduction

[Scott]

Is there a website or software repository yet?

Scott
AD5HS

On 8/23/2017 12:24 PM, P.J.Hicks wrote:

I have been involved with a project developed by Peter Rhodes of the UK that 
started as a way to improve the NR in his Pick a Star trx. It appears that the 
project is nearing the limits of what can be done and will hopefully go public 
soon. The project is called nitPic and operates on the audio output (phones) 
under Peter's software. It is truly amazing what it can do. Briefly it has two 
modes, SSB and CW. It processes the audio in 'bins' or slices. As each bin is 
processed the SW decides if it is signal or noise; if signal it is enhanced and 
if noise it is reduced. Sounds simple. It almost completely eliminates a CW 
signal if in SSB mode and vice versa eliminates a SSB signal if in CW mode. I 
have been able to bring out CW signals from the noise floor that do not show 
the slightest trace on my PowerSDR waterfall/spectrum display.

So good things are happening and improvements are in the works.

PJH, N7PXY
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[Elecraft] Question about K3s and Drake L7B combo

[K5MWR via Elecraft]

I am about to pair up a Drake L7B with my K3s and just wanted to tap the 
groups wisdom on any issues.


If you are running this combination would appreciate any advice from 
your experience.


Thanks
Dave K5MWR

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Re: [Elecraft] Ecoflex cable

[Mike Harris]

I installed Ecoflex 10 cable from the shack to the top of my tower in 
2008. A year or two ago it was mentioned and illustrated in the RSGB 
"RadCom" magazine the potential problem of screen foil break up and 
possible centre conductor migration through the foam dielectric in 
sections of this type of cable at places of repeated flexing.


My two runs of Ecoflex 10 terminate at the top of the tower with two 
extension runs providing the a rotator loop and continuing onwards to 
the HF and 6m beams on an eight foot mast above the top bearing. One run 
was Ecoflex 10 the other was RG213 type.


Recently I removed both extension cables for destructive inspection in 
the area of the rotator loop.


The copper foil screen of the Ecoflex 10 was seriously cracked, in some 
places almost to the point of complete severance. The braid element of 
the screen which is not particularly dense was OK.


The RG213 type cable showed no sign of damage whatsoever.

Naturally a rotator loop over a period of years takes a hammering and it 
seems this sort of foam, braid, foil cable is not first choice for the job.


Two replacement rotator loop runs of RG213 type cable have now been 
installed from the top of the tower to the antennas. The extra loss of 
these short lengths at HF and 6m are in my case insignificant given that 
the full run length shack to antenna is approximately 160 feet.


My only experience is with Ecoflex 10, cable from other manufacturers 
may behave differently.


Regards,

Mike VP8NO

On 23/08/2017 17:22, Wes Stewart wrote:
About three years ago I purchased some Ecoflex-10 cable assemblies from 
Vibroplex. These had what seemed to be very nicely made PL-259 type 
connectors preinstalled. (Getting lazy in my old age)  It appears that 
Vibroplex no longer sells these but other vendors do.


This note is to report on the performance in the field so far. In 
addition to the ones used as patch cords in the station, I installed one 
60 foot length on my Rohn fold-over tower from the base to the Yagi on 
top.  The upper end was used as a rotor loop, so it saw that flexing.


Prior to installing this cable I performed characterization measurements 
using my DG8SAQ vector network analyzer 
(http://sdr-kits.net/VNWA3_Description.html) running the supplied 
software and post processing the s11 data with Zplots 
(http://ac6la.com/zplots1.html).  The VNWA was calibrated with SMA 
standards but of course, measured with SMA-to-UHF adapters.  No attempt 
was made at that time to pick nits and subtract out adapter errors as 
they are pretty meaningless in this application. Cited with ridiculous 
precision, the loss at 30 MHz was 0.438 dB.


A few days ago I had need to fold over the tower for another purpose and 
decided to remeasure this cable and see how it's fared after nearly 
three years exposure in the Arizona desert.  The present attenuation was 
0.483 dB, which is remarkably close, especially considering the 
uncertainties involved.  I am quite pleased and wouldn't hesitate to use 
this wherever flexing is an issue.  I will continue to use Heliax where 
it isn't.


FWIW,

Wes  N7WS

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Re: [Elecraft] Surprising Behavior on KX3 KXPA100 Combo

[Phil Hystad]

No, I certainly did not switch bands while transmitting.  I don't think I said 
that.

PEH's iPhone

> On Aug 23, 2017, at 1:38 PM, Bob N3MNT  wrote:
> 
> If you are saying you switched bands with the amp still transmitting, that
> would probably cause what you are seeing.  There is a short delay after
> switching bands to switch in the new tuner settings. You should give the amp
> time to complete the changes before transmitting.
> 
> 
> 
> 
> --
> View this message in context: 
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> Sent from the Elecraft mailing list archive at Nabble.com.
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Re: [Elecraft] Surprising Behavior on KX3 KXPA100 Combo

[Bob N3MNT]

If you are saying you switched bands with the amp still transmitting, that
would probably cause what you are seeing.  There is a short delay after
switching bands to switch in the new tuner settings. You should give the amp
time to complete the changes before transmitting.




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[Elecraft] Ecoflex cable

[Wes Stewart]

About three years ago I purchased some Ecoflex-10 cable assemblies from 
Vibroplex. These had what seemed to be very nicely made PL-259 type connectors 
preinstalled. (Getting lazy in my old age)  It appears that Vibroplex no longer 
sells these but other vendors do.


This note is to report on the performance in the field so far. In addition to 
the ones used as patch cords in the station, I installed one 60 foot length on 
my Rohn fold-over tower from the base to the Yagi on top.  The upper end was 
used as a rotor loop, so it saw that flexing.


Prior to installing this cable I performed characterization measurements using 
my DG8SAQ vector network analyzer (http://sdr-kits.net/VNWA3_Description.html) 
running the supplied software and post processing the s11 data with Zplots 
(http://ac6la.com/zplots1.html).  The VNWA was calibrated with SMA standards but 
of course, measured with SMA-to-UHF adapters.  No attempt was made at that time 
to pick nits and subtract out adapter errors as they are pretty meaningless in 
this application. Cited with ridiculous precision, the loss at 30 MHz was 0.438 dB.


A few days ago I had need to fold over the tower for another purpose and decided 
to remeasure this cable and see how it's fared after nearly three years exposure 
in the Arizona desert.  The present attenuation was 0.483 dB, which is 
remarkably close, especially considering the uncertainties involved.  I am quite 
pleased and wouldn't hesitate to use this wherever flexing is an issue.  I will 
continue to use Heliax where it isn't.


FWIW,

Wes  N7WS

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[Elecraft] Surprising Behavior on KX3 KXPA100 Combo

[Phil Hystad]

I have configured my KX3 with my KXPA100 (previously used only with KX2) 
following all instructions (I think) in the KXPA100 user manual.

First comment — everything works, antenna tuner on KXPA100 works, power out 100 
watts on all bands, and so on.

Weird stuff:

1.  I Held Keyer/Mic/PWR button for power display, showing 100 watts.  Then, I 
immediately pushed Band+ to switch up to next band.  No band switching too 
place but the display changed from 100 watts on KX3 back to the clock.  
Pressing Band+ once more results in band switching as expected.  This happens 
every time in the sequence I describe and I am wondering if (a) this is normal, 
(b) something is not yet configured correctly.


2.  My reason for Hold on Keyer/Mic/PWR to display power is because after 
switching bands and after tuning the antenna for a low SWR (about 1.1:1) the 
power output was only about 10 watts.  I did a Hold on Keyer/Mic/PWR to see the 
power output and it was indeed 100 watts and not 10.  I then keyed down and 
then the output was 100 watts.  This does not seem normal to me.

None of these two behaviors occurred on my KX2.

Any ideas or comments?

73, phil, K7PEH

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Re: [Elecraft] Noise Reduction

[Kevin der Kinderen]

I'd love to hear some A/B audio samples of nitPic if they become available.
It operates at AF? Operates well in congested bands?

I've always been told that by the time the signal is demodulated to AF the
damage is done. Why I believe this I have no clue. So when I hear something
about noise reduction or filtering on AF it always makes me think of
howling CW and scratchy voice. The best filter I used at audio was the old
Autek QF-1A. Boy could I get that howling! I think I need to catch up and
learn new old ham tales.

73,
Kev K4VD

On Wed, Aug 23, 2017 at 1:24 PM, P.J.Hicks  wrote:

> I have been involved with a project developed by Peter Rhodes of the UK
> that started as a way to improve the NR in his Pick a Star trx. It appears
> that the project is nearing the limits of what can be done and will
> hopefully go public soon. The project is called nitPic and operates on the
> audio output (phones) under Peter's software. It is truly amazing what it
> can do. Briefly it has two modes, SSB and CW. It processes the audio in
> 'bins' or slices. As each bin is processed the SW decides if it is signal
> or noise; if signal it is enhanced and if noise it is reduced. Sounds
> simple. It almost completely eliminates a CW signal if in SSB mode and vice
> versa eliminates a SSB signal if in CW mode. I have been able to bring out
> CW signals from the noise floor that do not show the slightest trace on my
> PowerSDR waterfall/spectrum display.
>
> So good things are happening and improvements are in the works.
>
> PJH, N7PXY
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Re: [Elecraft] [KX3] Band Plans

[Edward R Cole]

To all who cite how their state police use low-band VHF (30-50 MHz).

Yes, I've heard that touted for years (decades), yet the Alaska 
Troopers (state police) use high-band VHF (150-175 MHz).  Their 
car-to-car simplex is 155.250 MHz.  Only state utility that uses 
low-band (47-MHz) is the AK DOT.  I personally know that they 
installed a base station in the home of a worker (his wife was 
KL7UP-sk) perched on a hill overlooking Turnagain arm to provide a 
link from Anchorage (about 25-miles) to a hwy maint camp 16-miles 
further up a mountain valley.  They now have a hwy repeater near the 
maint camp others along the Seward Hwy which probably provides hwy 
coverage.  The Seward Hwy+Sterling Hwy "are" the"I-5" of Alaska (not 
to mean its a freeway - its mostly 2-lane 55mph hwy - but see's 
highest traffic use in AK).


So all I can say about 6m prop from Kenai to Anchorage: low rolling 
hills and over water is that higher frequencies (222) propagate 
better (1991- to date experience).


Now I return the reflector to normal "Elecraft oriented" use.

73, Ed - KL7UW
  http://www.kl7uw.com
Dubus-NA Business mail:
  dubus...@gmail.com 


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Re: [Elecraft] BNC Connector on KX3

[Phil Kane]

On 8/23/2017 5:56 AM, geoffrey allsup wrote:

> I noticed this issue when I first assembled my KX3.  The simple cure
> for me after tightening the BNC a couple of times early on was to use
> a right-angle BNC adapter all the time.  No more problems, and the
> coax conveniently pays off to the rear of the rig :-)

I use that trick on all the BNC fittings on the preamps, filters, and
multicouplers in my receiving signal distribution system mounted on a
vertical backboard.  Makes connection much easier.

73 de K2ASP - Phil Kane
Elecraft K2/100   s/n 5402

>From a Clearing in the Silicon Forest
Beaverton (Washington County) Oregon
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[Elecraft] WTB KAT-100

[N4KS via Elecraft]

WTB KAT-100 external antenna tuner for K2/100. I'm good on QRZ.com.




-
Ken N4KS
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[Elecraft] Noise Reduction

[P.J.Hicks]

I have been involved with a project developed by Peter Rhodes of the UK that 
started as a way to improve the NR in his Pick a Star trx. It appears that the 
project is nearing the limits of what can be done and will hopefully go public 
soon. The project is called nitPic and operates on the audio output (phones) 
under Peter's software. It is truly amazing what it can do. Briefly it has two 
modes, SSB and CW. It processes the audio in 'bins' or slices. As each bin is 
processed the SW decides if it is signal or noise; if signal it is enhanced and 
if noise it is reduced. Sounds simple. It almost completely eliminates a CW 
signal if in SSB mode and vice versa eliminates a SSB signal if in CW mode. I 
have been able to bring out CW signals from the noise floor that do not show 
the slightest trace on my PowerSDR waterfall/spectrum display. 

So good things are happening and improvements are in the works. 

PJH, N7PXY 
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Re: [Elecraft] BNC Connector on KXe

[Brendon Whateley]

If it is a recurring problem, why not put a drop of Loctite (probably 242
which is non-permanent) on the thread. That should solve the problem.

- Brendon
KK6AYI

On Tue, Aug 22, 2017 at 2:36 PM, Don Wilhelm  wrote:

> Aaron,
>
> The most likely cause is that the nut on the BNC jack has worked loose. It
> should be easy to tighten, although you will likely have to remove the 2
> meter option (if you have it) and the KXAT3.
> See page 25 of the KX3 Assembly Manual.
> Use a wrench to tighten the nut, and while tightening the nut, put a BNC
> connector on the outside of the jack and hold it with pliers so you can
> torque the nut tight without damaging the BNC jack.
>
> 73,
> Don W3FPR
>
>
> On 8/22/2017 9:54 AM, Aaron K5ATG wrote:
>
>> The BNC Connector on my KX3 has become loose, is there a way to repair it?
>>
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Re: [Elecraft] BL2 Enclosure

[rich hurd WC3T]

Thanks for this; I was thinking of getting the BL2 but held off until I
could cobble together an enclosure.   Since all that cobbling is now done,
I think this might be a good next purchase.  :D



---
73 (or 72 for the QRP folks),
Rich Hurd / WC3T
DMR ID: 3142737
Northampton County RACES
EPA-ARRL Public Information Officer for Scouting
Latitude: 40.761621 Longitude: -75.288988  (40°45.68' N 75°17.33' W) Grid:
*FN20is*


On Wed, Aug 23, 2017 at 10:52 AM, Dave W8FGU  wrote:

> GM Jim,
>
> This is  Dave W8FGU and yes, I'm still producing enclosures for Elecraft's
> mini module line. Much to my amazement,  I'm seeing an increase in business
> in the last couple of years despite thinking that I saturated the market a
> number of years ago. This is a great tribute to Elecraft and the large
> number of hams who enjoy building kits and home brewing.
>
> Look at www.w8fgu.com and you can browse the various enclosures I make
> including the BL2.
>
> Thanks all for the shameless plug ;-)
>
> 73,
> Dave W8FGU
>
>
>
> On August 23, 2017 00:14:03 James Bennett  wrote:
>
> Just completed the assembly of the Elecraft BL2 balun. Nice unit, but I'm
>> a tad disappointed that there is no enclosure for it, optional or included.
>> Since there are exposed electronic connections on it, and because I'll be
>> connecting it to 450-ohm ladder line that handles line barbed wire, I hate
>> just having the BL2 flopping around.
>>
>> A buddy of mine mentioned that he thought at one time there was someone
>> on this reflector who was offering an enclosure for the BL2. Does anyone
>> here have information on such an item? Or, has anyone here with a 3D
>> printer attempted building one?
>>
>> Thx,
>>
>> Jim Bennett / W6JHB
>> Folsom, CA
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>>
>
>
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[Elecraft] BNC Connector

[Aaron K5ATG]

Thank you everybody, the issue has been corrected.
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Re: [Elecraft] BL2 Enclosure

[Dave W8FGU]

GM Jim,

This is  Dave W8FGU and yes, I'm still producing enclosures for Elecraft's 
mini module line. Much to my amazement,  I'm seeing an increase in business 
in the last couple of years despite thinking that I saturated the market a 
number of years ago. This is a great tribute to Elecraft and the large 
number of hams who enjoy building kits and home brewing.


Look at www.w8fgu.com and you can browse the various enclosures I make 
including the BL2.


Thanks all for the shameless plug ;-)

73,
Dave W8FGU



On August 23, 2017 00:14:03 James Bennett  wrote:

Just completed the assembly of the Elecraft BL2 balun. Nice unit, but I'm a 
tad disappointed that there is no enclosure for it, optional or included. 
Since there are exposed electronic connections on it, and because I'll be 
connecting it to 450-ohm ladder line that handles line barbed wire, I hate 
just having the BL2 flopping around.


A buddy of mine mentioned that he thought at one time there was someone on 
this reflector who was offering an enclosure for the BL2. Does anyone here 
have information on such an item? Or, has anyone here with a 3D printer 
attempted building one?


Thx,

Jim Bennett / W6JHB
Folsom, CA
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Re: [Elecraft] BNC Connector on KX3

[geoffrey allsup]

I noticed this issue when I first assembled my KX3.  The simple cure for me 
after tightening the BNC a couple of times early on was to use a right-angle 
BNC adapter all the time.  No more problems, and the coax conveniently pays off 
to the rear of the rig :-)

73,
geoff - W1OH


***
Geoff Allsup, W1OH   gall...@whoi.edu  or  w...@whoi.edu
Senior Engineer Upper Ocean Processes Group
Woods Hole Oceanographic Institution  Woods Hole, MA, USA
***

> On Aug 22, 2017, at 17:36, Don Wilhelm  wrote:
> 
> Aaron,
> 
> The most likely cause is that the nut on the BNC jack has worked loose. It 
> should be easy to tighten, although you will likely have to remove the 2 
> meter option (if you have it) and the KXAT3.
> See page 25 of the KX3 Assembly Manual.
> Use a wrench to tighten the nut, and while tightening the nut, put a BNC 
> connector on the outside of the jack and hold it with pliers so you can 
> torque the nut tight without damaging the BNC jack.
> 
> 73,
> Don W3FPR
> 
> 
> On 8/22/2017 9:54 AM, Aaron K5ATG wrote:
>> The BNC Connector on my KX3 has become loose, is there a way to repair it?
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Re: [Elecraft] BL2 Enclosure

[Victor Rosenthal 4X6GP]

Home Depot (etc.) has various sizes of waterproof plastic boxes that you 
could use.



73,
Victor, 4X6GP
Rehovot, Israel
Formerly K2VCO
http://www.qsl.net/k2vco/


On 23 Aug 2017 07:13, James Bennett wrote:

Just completed the assembly of the Elecraft BL2 balun. Nice unit, but
I'm a tad disappointed that there is no enclosure for it, optional or
included. Since there are exposed electronic connections on it, and
because I'll be connecting it to 450-ohm ladder line that handles
line barbed wire, I hate just having the BL2 flopping around.

A buddy of mine mentioned that he thought at one time there was
someone on this reflector who was offering an enclosure for the BL2.
Does anyone here have information on such an item? Or, has anyone
here with a 3D printer attempted building one?

Thx,

Jim Bennett / W6JHB Folsom, CA 

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Re: [Elecraft] BL2 Enclosure

[Thorpe, Jeffrey]

You can also use a short section of 2" PVC with a couple end-caps that have 
proper sized holes drilled for your wire.

Jeff - KG7HDZ

> On Aug 22, 2017, at 7:27 PM, Brian Hunt  wrote:
> 
> Links are at the bottom of the Elecraft main page. Here's link to the BL2 
> case. 
> http://www.w8fgu.com/bl2encl.html
> 
> Brian, K0DTJ
> 
>> On Aug 22, 2017, at 21:13, James Bennett  wrote:
>> 
>> Just completed the assembly of the Elecraft BL2 balun. Nice unit, but I'm a 
>> tad disappointed that there is no enclosure for it, optional or included. 
>> Since there are exposed electronic connections on it, and because I'll be 
>> connecting it to 450-ohm ladder line that handles line barbed wire, I hate 
>> just having the BL2 flopping around.
>> 
>> A buddy of mine mentioned that he thought at one time there was someone on 
>> this reflector who was offering an enclosure for the BL2. Does anyone here 
>> have information on such an item? Or, has anyone here with a 3D printer 
>> attempted building one?
>> 
>> Thx, 
>> 
>> Jim Bennett / W6JHB
>> Folsom, CA
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